STM32F767 音乐播放器 SAI DMA双缓冲 可播放WAV、MP3、FLAC文件
2024-06-23 06:09:18
以下为在单缓冲程序基础上修改
/*** Enable DMA controller clock*/
static void MX_DMA_Init(void)
{/* DMA controller clock enable */__HAL_RCC_DMA2_CLK_ENABLE();/* DMA interrupt init *//* DMA2_Stream1_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA2_Stream1_IRQn, 1, 0);HAL_NVIC_EnableIRQ(DMA2_Stream1_IRQn);/* DMA2_Stream3_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 0, 0);HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);/* DMA2_Stream6_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 0, 0);HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);}
/* USER CODE BEGIN Header */
/********************************************************************************* @file stm32f7xx_it.c* @brief Interrupt Service Routines.******************************************************************************* @attention** <h2><center>© Copyright (c) 2021 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f7xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */#include "fifo.h"
#include "bsp_wavplay.h"
#include "bsp_mp3play.h"
#include "bsp_flacplay.h"
#include "bsp_sai.h"/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD *//* USER CODE END TD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD *//* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//* USER CODE END 0 *//* External variables --------------------------------------------------------*/
extern DMA_HandleTypeDef hdma_sai1_a;
extern DMA_HandleTypeDef hdma_sdmmc1_rx;
extern DMA_HandleTypeDef hdma_sdmmc1_tx;
extern SD_HandleTypeDef hsd1;
/* USER CODE BEGIN EV *//* USER CODE END EV *//******************************************************************************/
/* Cortex-M7 Processor Interruption and Exception Handlers */
/******************************************************************************/
/*** @brief This function handles Non maskable interrupt.*/
void NMI_Handler(void)
{/* USER CODE BEGIN NonMaskableInt_IRQn 0 *//* USER CODE END NonMaskableInt_IRQn 0 */HAL_RCC_NMI_IRQHandler();/* USER CODE BEGIN NonMaskableInt_IRQn 1 */while (1){}/* USER CODE END NonMaskableInt_IRQn 1 */
}/*** @brief This function handles Hard fault interrupt.*/
void HardFault_Handler(void)
{/* USER CODE BEGIN HardFault_IRQn 0 *//* USER CODE END HardFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_HardFault_IRQn 0 *//* USER CODE END W1_HardFault_IRQn 0 */}
}/*** @brief This function handles Memory management fault.*/
void MemManage_Handler(void)
{/* USER CODE BEGIN MemoryManagement_IRQn 0 *//* USER CODE END MemoryManagement_IRQn 0 */while (1){/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 *//* USER CODE END W1_MemoryManagement_IRQn 0 */}
}/*** @brief This function handles Pre-fetch fault, memory access fault.*/
void BusFault_Handler(void)
{/* USER CODE BEGIN BusFault_IRQn 0 *//* USER CODE END BusFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_BusFault_IRQn 0 *//* USER CODE END W1_BusFault_IRQn 0 */}
}/*** @brief This function handles Undefined instruction or illegal state.*/
void UsageFault_Handler(void)
{/* USER CODE BEGIN UsageFault_IRQn 0 *//* USER CODE END UsageFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_UsageFault_IRQn 0 *//* USER CODE END W1_UsageFault_IRQn 0 */}
}/*** @brief This function handles System service call via SWI instruction.*/
void SVC_Handler(void)
{/* USER CODE BEGIN SVCall_IRQn 0 *//* USER CODE END SVCall_IRQn 0 *//* USER CODE BEGIN SVCall_IRQn 1 *//* USER CODE END SVCall_IRQn 1 */
}/*** @brief This function handles Debug monitor.*/
void DebugMon_Handler(void)
{/* USER CODE BEGIN DebugMonitor_IRQn 0 *//* USER CODE END DebugMonitor_IRQn 0 *//* USER CODE BEGIN DebugMonitor_IRQn 1 *//* USER CODE END DebugMonitor_IRQn 1 */
}/*** @brief This function handles Pendable request for system service.*/
void PendSV_Handler(void)
{/* USER CODE BEGIN PendSV_IRQn 0 *//* USER CODE END PendSV_IRQn 0 *//* USER CODE BEGIN PendSV_IRQn 1 *//* USER CODE END PendSV_IRQn 1 */
}/*** @brief This function handles System tick timer.*/
void SysTick_Handler(void)
{/* USER CODE BEGIN SysTick_IRQn 0 *//* USER CODE END SysTick_IRQn 0 */HAL_IncTick();/* USER CODE BEGIN SysTick_IRQn 1 *//* USER CODE END SysTick_IRQn 1 */
}/******************************************************************************/
/* STM32F7xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32f7xx.s). */
/******************************************************************************//*** @brief This function handles SDMMC1 global interrupt.*/
void SDMMC1_IRQHandler(void)
{/* USER CODE BEGIN SDMMC1_IRQn 0 *//* USER CODE END SDMMC1_IRQn 0 */HAL_SD_IRQHandler(&hsd1);/* USER CODE BEGIN SDMMC1_IRQn 1 *//* USER CODE END SDMMC1_IRQn 1 */
}/*** @brief This function handles DMA2 stream1 global interrupt.*/
void DMA2_Stream1_IRQHandler(void)
{/* USER CODE BEGIN DMA2_Stream1_IRQn 0 *//* USER CODE END DMA2_Stream1_IRQn 0 */HAL_DMA_IRQHandler(&hdma_sai1_a);/* USER CODE BEGIN DMA2_Stream1_IRQn 1 *//* USER CODE END DMA2_Stream1_IRQn 1 */
}/*** @brief This function handles DMA2 stream3 global interrupt.*/
void DMA2_Stream3_IRQHandler(void)
{/* USER CODE BEGIN DMA2_Stream3_IRQn 0 *//* USER CODE END DMA2_Stream3_IRQn 0 */HAL_DMA_IRQHandler(&hdma_sdmmc1_rx);/* USER CODE BEGIN DMA2_Stream3_IRQn 1 *//* USER CODE END DMA2_Stream3_IRQn 1 */
}/*** @brief This function handles DMA2 stream6 global interrupt.*/
void DMA2_Stream6_IRQHandler(void)
{/* USER CODE BEGIN DMA2_Stream6_IRQn 0 *//* USER CODE END DMA2_Stream6_IRQn 0 */HAL_DMA_IRQHandler(&hdma_sdmmc1_tx);/* USER CODE BEGIN DMA2_Stream6_IRQn 1 *//* USER CODE END DMA2_Stream6_IRQn 1 */
}/* USER CODE BEGIN 1 *//*** @brief Rx Transfer completed callbacks* @param hsd: Pointer SD handle* @retval None*/
void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd)
{HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);rx_done = 1;
}/*** @brief Tx Transfer completed callbacks* @param hsd: Pointer to SD handle* @retval None*/
void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd)
{HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);tx_done = 1;
}/*** @brief SD error callbacks* @param hsd: Pointer SD handle* @retval None*/
void HAL_SD_ErrorCallback(SD_HandleTypeDef *hsd)
{HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0);
}/* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****//* USER CODE BEGIN Header */
/********************************************************************************* @file stm32f7xx_hal_msp.c* @brief This file provides code for the MSP Initialization* and de-Initialization codes.******************************************************************************* @attention** <h2><center>© Copyright (c) 2021 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes *//* USER CODE END Includes */
extern DMA_HandleTypeDef hdma_sdmmc1_rx;extern DMA_HandleTypeDef hdma_sdmmc1_tx;/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD *//* USER CODE END TD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define *//* USER CODE END Define *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro *//* USER CODE END Macro *//* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions *//* USER CODE END ExternalFunctions *//* USER CODE BEGIN 0 *//* USER CODE END 0 */
/*** Initializes the Global MSP.*/
void HAL_MspInit(void)
{/* USER CODE BEGIN MspInit 0 *//* USER CODE END MspInit 0 */__HAL_RCC_PWR_CLK_ENABLE();__HAL_RCC_SYSCFG_CLK_ENABLE();/* System interrupt init*//* USER CODE BEGIN MspInit 1 *//* USER CODE END MspInit 1 */
}/**
* @brief SD MSP Initialization
* This function configures the hardware resources used in this example
* @param hsd: SD handle pointer
* @retval None
*/
void HAL_SD_MspInit(SD_HandleTypeDef* hsd)
{GPIO_InitTypeDef GPIO_InitStruct = {0};if(hsd->Instance==SDMMC1){/* USER CODE BEGIN SDMMC1_MspInit 0 *//* USER CODE END SDMMC1_MspInit 0 *//* Peripheral clock enable */__HAL_RCC_SDMMC1_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();__HAL_RCC_GPIOD_CLK_ENABLE();/**SDMMC1 GPIO ConfigurationPC8 ------> SDMMC1_D0PC9 ------> SDMMC1_D1PC10 ------> SDMMC1_D2PC11 ------> SDMMC1_D3PC12 ------> SDMMC1_CKPD2 ------> SDMMC1_CMD*/GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_2;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);/* SDMMC1 DMA Init *//* SDMMC1_RX Init */hdma_sdmmc1_rx.Instance = DMA2_Stream3;hdma_sdmmc1_rx.Init.Channel = DMA_CHANNEL_4;hdma_sdmmc1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;hdma_sdmmc1_rx.Init.PeriphInc = DMA_PINC_DISABLE;hdma_sdmmc1_rx.Init.MemInc = DMA_MINC_ENABLE;hdma_sdmmc1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;hdma_sdmmc1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;hdma_sdmmc1_rx.Init.Mode = DMA_PFCTRL;hdma_sdmmc1_rx.Init.Priority = DMA_PRIORITY_LOW;hdma_sdmmc1_rx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;hdma_sdmmc1_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;hdma_sdmmc1_rx.Init.MemBurst = DMA_MBURST_INC4;hdma_sdmmc1_rx.Init.PeriphBurst = DMA_PBURST_INC4;if (HAL_DMA_Init(&hdma_sdmmc1_rx) != HAL_OK){Error_Handler();}__HAL_LINKDMA(hsd,hdmarx,hdma_sdmmc1_rx);/* SDMMC1_TX Init */hdma_sdmmc1_tx.Instance = DMA2_Stream6;hdma_sdmmc1_tx.Init.Channel = DMA_CHANNEL_4;hdma_sdmmc1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;hdma_sdmmc1_tx.Init.PeriphInc = DMA_PINC_DISABLE;hdma_sdmmc1_tx.Init.MemInc = DMA_MINC_ENABLE;hdma_sdmmc1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;hdma_sdmmc1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;hdma_sdmmc1_tx.Init.Mode = DMA_PFCTRL;hdma_sdmmc1_tx.Init.Priority = DMA_PRIORITY_LOW;hdma_sdmmc1_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;hdma_sdmmc1_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;hdma_sdmmc1_tx.Init.MemBurst = DMA_MBURST_INC4;hdma_sdmmc1_tx.Init.PeriphBurst = DMA_PBURST_INC4;if (HAL_DMA_Init(&hdma_sdmmc1_tx) != HAL_OK){Error_Handler();}__HAL_LINKDMA(hsd,hdmatx,hdma_sdmmc1_tx);/* SDMMC1 interrupt Init */HAL_NVIC_SetPriority(SDMMC1_IRQn, 3, 0);HAL_NVIC_EnableIRQ(SDMMC1_IRQn);/* USER CODE BEGIN SDMMC1_MspInit 1 *//* USER CODE END SDMMC1_MspInit 1 */}}/**
* @brief SD MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hsd: SD handle pointer
* @retval None
*/
void HAL_SD_MspDeInit(SD_HandleTypeDef* hsd)
{if(hsd->Instance==SDMMC1){/* USER CODE BEGIN SDMMC1_MspDeInit 0 *//* USER CODE END SDMMC1_MspDeInit 0 *//* Peripheral clock disable */__HAL_RCC_SDMMC1_CLK_DISABLE();/**SDMMC1 GPIO ConfigurationPC8 ------> SDMMC1_D0PC9 ------> SDMMC1_D1PC10 ------> SDMMC1_D2PC11 ------> SDMMC1_D3PC12 ------> SDMMC1_CKPD2 ------> SDMMC1_CMD*/HAL_GPIO_DeInit(GPIOC, GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12);HAL_GPIO_DeInit(GPIOD, GPIO_PIN_2);/* SDMMC1 DMA DeInit */HAL_DMA_DeInit(hsd->hdmarx);HAL_DMA_DeInit(hsd->hdmatx);/* SDMMC1 interrupt DeInit */HAL_NVIC_DisableIRQ(SDMMC1_IRQn);/* USER CODE BEGIN SDMMC1_MspDeInit 1 *//* USER CODE END SDMMC1_MspDeInit 1 */}}/**
* @brief UART MSP Initialization
* This function configures the hardware resources used in this example
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspInit(UART_HandleTypeDef* huart)
{GPIO_InitTypeDef GPIO_InitStruct = {0};if(huart->Instance==USART1){/* USER CODE BEGIN USART1_MspInit 0 *//* USER CODE END USART1_MspInit 0 *//* Peripheral clock enable */__HAL_RCC_USART1_CLK_ENABLE();__HAL_RCC_GPIOA_CLK_ENABLE();/**USART1 GPIO ConfigurationPA9 ------> USART1_TXPA10 ------> USART1_RX*/GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF7_USART1;HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);/* USER CODE BEGIN USART1_MspInit 1 *//* USER CODE END USART1_MspInit 1 */}}/**
* @brief UART MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
{if(huart->Instance==USART1){/* USER CODE BEGIN USART1_MspDeInit 0 *//* USER CODE END USART1_MspDeInit 0 *//* Peripheral clock disable */__HAL_RCC_USART1_CLK_DISABLE();/**USART1 GPIO ConfigurationPA9 ------> USART1_TXPA10 ------> USART1_RX*/HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);/* USER CODE BEGIN USART1_MspDeInit 1 *//* USER CODE END USART1_MspDeInit 1 */}}static uint32_t FMC_Initialized = 0;static void HAL_FMC_MspInit(void){/* USER CODE BEGIN FMC_MspInit 0 *//* USER CODE END FMC_MspInit 0 */GPIO_InitTypeDef GPIO_InitStruct ={0};if (FMC_Initialized) {return;}FMC_Initialized = 1;/* Peripheral clock enable */__HAL_RCC_FMC_CLK_ENABLE();/** FMC GPIO ConfigurationPF0 ------> FMC_A0PF1 ------> FMC_A1PF2 ------> FMC_A2PF3 ------> FMC_A3PF4 ------> FMC_A4PF5 ------> FMC_A5PC0 ------> FMC_SDNWEPC2 ------> FMC_SDNE0PC3 ------> FMC_SDCKE0PF11 ------> FMC_SDNRASPF12 ------> FMC_A6PF13 ------> FMC_A7PF14 ------> FMC_A8PF15 ------> FMC_A9PG0 ------> FMC_A10PG1 ------> FMC_A11PE7 ------> FMC_D4PE8 ------> FMC_D5PE9 ------> FMC_D6PE10 ------> FMC_D7PE11 ------> FMC_D8PE12 ------> FMC_D9PE13 ------> FMC_D10PE14 ------> FMC_D11PE15 ------> FMC_D12PD8 ------> FMC_D13PD9 ------> FMC_D14PD10 ------> FMC_D15PD14 ------> FMC_D0PD15 ------> FMC_D1PG2 ------> FMC_A12PG4 ------> FMC_BA0PG5 ------> FMC_BA1PG8 ------> FMC_SDCLKPD0 ------> FMC_D2PD1 ------> FMC_D3PG15 ------> FMC_SDNCASPE0 ------> FMC_NBL0PE1 ------> FMC_NBL1*/GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_FMC;HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_2|GPIO_PIN_3;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_FMC;HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_15;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_FMC;HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_FMC;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF12_FMC;HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);/* USER CODE BEGIN FMC_MspInit 1 *//* USER CODE END FMC_MspInit 1 */
}void HAL_SDRAM_MspInit(SDRAM_HandleTypeDef* hsdram){/* USER CODE BEGIN SDRAM_MspInit 0 *//* USER CODE END SDRAM_MspInit 0 */HAL_FMC_MspInit();/* USER CODE BEGIN SDRAM_MspInit 1 *//* USER CODE END SDRAM_MspInit 1 */
}static uint32_t FMC_DeInitialized = 0;static void HAL_FMC_MspDeInit(void){/* USER CODE BEGIN FMC_MspDeInit 0 *//* USER CODE END FMC_MspDeInit 0 */if (FMC_DeInitialized) {return;}FMC_DeInitialized = 1;/* Peripheral clock enable */__HAL_RCC_FMC_CLK_DISABLE();/** FMC GPIO ConfigurationPF0 ------> FMC_A0PF1 ------> FMC_A1PF2 ------> FMC_A2PF3 ------> FMC_A3PF4 ------> FMC_A4PF5 ------> FMC_A5PC0 ------> FMC_SDNWEPC2 ------> FMC_SDNE0PC3 ------> FMC_SDCKE0PF11 ------> FMC_SDNRASPF12 ------> FMC_A6PF13 ------> FMC_A7PF14 ------> FMC_A8PF15 ------> FMC_A9PG0 ------> FMC_A10PG1 ------> FMC_A11PE7 ------> FMC_D4PE8 ------> FMC_D5PE9 ------> FMC_D6PE10 ------> FMC_D7PE11 ------> FMC_D8PE12 ------> FMC_D9PE13 ------> FMC_D10PE14 ------> FMC_D11PE15 ------> FMC_D12PD8 ------> FMC_D13PD9 ------> FMC_D14PD10 ------> FMC_D15PD14 ------> FMC_D0PD15 ------> FMC_D1PG2 ------> FMC_A12PG4 ------> FMC_BA0PG5 ------> FMC_BA1PG8 ------> FMC_SDCLKPD0 ------> FMC_D2PD1 ------> FMC_D3PG15 ------> FMC_SDNCASPE0 ------> FMC_NBL0PE1 ------> FMC_NBL1*/HAL_GPIO_DeInit(GPIOF, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15);HAL_GPIO_DeInit(GPIOC, GPIO_PIN_0|GPIO_PIN_2|GPIO_PIN_3);HAL_GPIO_DeInit(GPIOG, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_15);HAL_GPIO_DeInit(GPIOE, GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1);HAL_GPIO_DeInit(GPIOD, GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0|GPIO_PIN_1);/* USER CODE BEGIN FMC_MspDeInit 1 *//* USER CODE END FMC_MspDeInit 1 */
}void HAL_SDRAM_MspDeInit(SDRAM_HandleTypeDef* hsdram){/* USER CODE BEGIN SDRAM_MspDeInit 0 *//* USER CODE END SDRAM_MspDeInit 0 */HAL_FMC_MspDeInit();/* USER CODE BEGIN SDRAM_MspDeInit 1 *//* USER CODE END SDRAM_MspDeInit 1 */
}extern DMA_HandleTypeDef hdma_sai1_a;//static uint32_t SAI1_client =0;//void HAL_SAI_MspInit(SAI_HandleTypeDef* hsai)
//{// GPIO_InitTypeDef GPIO_InitStruct;
///* SAI1 */
// if(hsai->Instance==SAI1_Block_A)
// {// /* Peripheral clock enable */
// if (SAI1_client == 0)
// {// __HAL_RCC_SAI1_CLK_ENABLE();
// }
// SAI1_client ++;// /**SAI1_A_Block_A GPIO Configuration
// PE2 ------> SAI1_MCLK_A
// PE4 ------> SAI1_FS_A
// PE5 ------> SAI1_SCK_A
// PE6 ------> SAI1_SD_A
// */
// GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6;
// GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
// GPIO_InitStruct.Pull = GPIO_NOPULL;
// GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
// GPIO_InitStruct.Alternate = GPIO_AF6_SAI1;
// HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);// /* Peripheral DMA init*/// hdma_sai1_a.Instance = DMA2_Stream1;
// hdma_sai1_a.Init.Channel = DMA_CHANNEL_0;
// hdma_sai1_a.Init.Direction = DMA_MEMORY_TO_PERIPH;
// hdma_sai1_a.Init.PeriphInc = DMA_PINC_DISABLE;
// hdma_sai1_a.Init.MemInc = DMA_MINC_ENABLE;
// hdma_sai1_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
// hdma_sai1_a.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
// hdma_sai1_a.Init.Mode = DMA_CIRCULAR;
// hdma_sai1_a.Init.Priority = DMA_PRIORITY_LOW;
// hdma_sai1_a.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
// hdma_sai1_a.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;
// hdma_sai1_a.Init.MemBurst = DMA_MBURST_SINGLE;
// hdma_sai1_a.Init.PeriphBurst = DMA_PBURST_SINGLE;
// if (HAL_DMA_Init(&hdma_sai1_a) != HAL_OK)
// {// Error_Handler();
// }// /* Several peripheral DMA handle pointers point to the same DMA handle.
// Be aware that there is only one stream to perform all the requested DMAs. */
// __HAL_LINKDMA(hsai,hdmarx,hdma_sai1_a);// __HAL_LINKDMA(hsai,hdmatx,hdma_sai1_a);// }
//}//void HAL_SAI_MspDeInit(SAI_HandleTypeDef* hsai)
//{///* SAI1 */
// if(hsai->Instance==SAI1_Block_A)
// {// SAI1_client --;
// if (SAI1_client == 0)
// {// /* Peripheral clock disable */
// __HAL_RCC_SAI1_CLK_DISABLE();
// }// /**SAI1_A_Block_A GPIO Configuration
// PE2 ------> SAI1_MCLK_A
// PE4 ------> SAI1_FS_A
// PE5 ------> SAI1_SCK_A
// PE6 ------> SAI1_SD_A
// */
// HAL_GPIO_DeInit(GPIOE, GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6);// /* SAI1 DMA Deinit */
// HAL_DMA_DeInit(hsai->hdmarx);
// HAL_DMA_DeInit(hsai->hdmatx);
// }
//}/* USER CODE BEGIN 1 *//* USER CODE END 1 *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/#ifndef __BSP_SAI_H
#define __BSP_SAI_H#ifdef __cplusplus
extern "C" {#endif#include "main.h"extern void (*BSP_SAI_TX_Callback)(DMA_HandleTypeDef *_hdma); //TX回调函数 void BSP_SAI1_Init(uint32_t datasize, uint32_t AudioFrequency);
uint8_t SAIA_SampleRate_Set(uint32_t samplerate);
void SAIA_TX_DMA_Init(uint8_t width); #ifdef __cplusplus
}
#endif#endif /* __BSP_SAI_H */#include "bsp_sai.h"
#include "bsp_wavplay.h"//SAI DMA回调函数指针
void (*BSP_SAI_TX_Callback)(DMA_HandleTypeDef *_hdma); //TX回调函数 /*** @brief SAI1 Initialization Function* @param None* @retval None*/
void BSP_SAI1_Init(uint32_t datasize, uint32_t AudioFrequency)
{HAL_SAI_DeInit(&hsai_BlockA1);hsai_BlockA1.Instance = SAI1_Block_A;hsai_BlockA1.Init.AudioMode = SAI_MODEMASTER_TX;hsai_BlockA1.Init.Synchro = SAI_ASYNCHRONOUS;hsai_BlockA1.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;hsai_BlockA1.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;hsai_BlockA1.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;hsai_BlockA1.Init.AudioFrequency = AudioFrequency;hsai_BlockA1.Init.SynchroExt = SAI_SYNCEXT_DISABLE;hsai_BlockA1.Init.MonoStereoMode = SAI_STEREOMODE;hsai_BlockA1.Init.CompandingMode = SAI_NOCOMPANDING;hsai_BlockA1.Init.TriState = SAI_OUTPUT_NOTRELEASED;if (HAL_SAI_InitProtocol(&hsai_BlockA1, SAI_I2S_STANDARD, datasize, 2) != HAL_OK){Error_Handler();}
}//SAI Block A采样率设置
//采样率计算公式:
//MCKDIV!=0: Fs=SAI_CK_x/[512*MCKDIV]
//MCKDIV==0: Fs=SAI_CK_x/256
//SAI_CK_x=(HSE/pllm)*PLLI2SN/PLLI2SQ/(PLLI2SDIVQ+1)
//一般HSE=25Mhz
//pllm:在Stm32_Clock_Init设置的时候确定，一般是25
//PLLI2SN:一般是192~432
//PLLI2SQ:2~15
//PLLI2SDIVQ:0~31
//MCKDIV:0~15
//SAI A分频系数表@pllm=8,HSE=25Mhz,即vco输入频率为1Mhz
const uint16_t SAI_PSC_TBL[][5]=
{{800 ,344,7,0,12}, //8Khz采样率{1102,429,2,18,2}, //11.025Khz采样率 {1600,344,7, 0,6}, //16Khz采样率{2205,429,2,18,1}, //22.05Khz采样率{3200,344,7, 0,3}, //32Khz采样率{4410,429,2,18,0}, //44.1Khz采样率{4800,344,7, 0,2}, //48Khz采样率{8820,271,2, 2,1}, //88.2Khz采样率{9600,344,7, 0,1}, //96Khz采样率{17640,271,6,0,0}, //176.4Khz采样率 {19200,295,6,0,0}, //192Khz采样率
};
//设置SAIA的采样率(@MCKEN)
//samplerate:采样率,单位:Hz
//返回值:0,设置成功;1,无法设置.
uint8_t SAIA_SampleRate_Set(uint32_t samplerate)
{ uint8_t i=0; uint32_t tempreg=0;samplerate/=10;//缩小10倍 for(i=0;i<(sizeof(SAI_PSC_TBL)/10);i++)//看看改采样率是否可以支持{if(samplerate==SAI_PSC_TBL[i][0])break;}RCC->CR&=~(1<<26); //先关闭PLLI2S if(i==(sizeof(SAI_PSC_TBL)/10))return 1;//搜遍了也找不到tempreg|=(uint32_t)SAI_PSC_TBL[i][1]<<6; //设置PLLI2SNtempreg|=(uint32_t)SAI_PSC_TBL[i][2]<<24; //设置PLLI2SQ RCC->PLLI2SCFGR=tempreg; //设置I2SxCLK的频率 tempreg=RCC->DCKCFGR1; tempreg&=~(0X1F); //清空PLLI2SDIVQ设置.tempreg&=~(0X03<<20); //清空SAI1ASRC设置.tempreg|=SAI_PSC_TBL[i][3]<<0; //设置PLLI2SDIVQ tempreg|=1<<20; //设置SAI1A时钟来源为PLLI2SQRCC->DCKCFGR1=tempreg; //设置DCKCFGR寄存器 RCC->CR|=1<<26; //开启I2S时钟while((RCC->CR&1<<27)==0); //等待I2S时钟开启成功. tempreg=SAI1_Block_A->CR1; tempreg&=~(0X0F<<20); //清除MCKDIV设置tempreg|=(uint32_t)SAI_PSC_TBL[i][4]<<20; //设置MCKDIVtempreg|=1<<16; //使能SAI1 Block Atempreg|=1<<17; //使能DMASAI1_Block_A->CR1=tempreg; //配置MCKDIV,同时使能SAI1 Block A return 0;
} void SAIA_TX_DMA_Init(uint8_t width)
{ /* Peripheral DMA init*///HAL_DMA_DeInit(&hdma_sai1_a);if(width==16){hdma_sai1_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;hdma_sai1_a.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;}else if(width==24){hdma_sai1_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;hdma_sai1_a.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;}hdma_sai1_a.Instance = DMA2_Stream1;hdma_sai1_a.Init.Channel = DMA_CHANNEL_0;hdma_sai1_a.Init.Direction = DMA_MEMORY_TO_PERIPH;hdma_sai1_a.Init.PeriphInc = DMA_PINC_DISABLE;hdma_sai1_a.Init.MemInc = DMA_MINC_ENABLE;hdma_sai1_a.Init.Mode = DMA_CIRCULAR;hdma_sai1_a.Init.Priority = DMA_PRIORITY_LOW;hdma_sai1_a.Init.FIFOMode = DMA_FIFOMODE_ENABLE;hdma_sai1_a.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;hdma_sai1_a.Init.MemBurst = DMA_MBURST_SINGLE;hdma_sai1_a.Init.PeriphBurst = DMA_PBURST_SINGLE;if (HAL_DMA_Init(&hdma_sai1_a) != HAL_OK){Error_Handler();}/* Several peripheral DMA handle pointers point to the same DMA handle.Be aware that there is only one stream to perform all the requested DMAs. */__HAL_LINKDMA(&hsai_BlockA1,hdmarx,hdma_sai1_a);__HAL_LINKDMA(&hsai_BlockA1,hdmatx,hdma_sai1_a);
} static uint32_t SAI1_client =0;void HAL_SAI_MspInit(SAI_HandleTypeDef* hsai)
{GPIO_InitTypeDef GPIO_InitStruct;
/* SAI1 */if(hsai->Instance==SAI1_Block_A){/* Peripheral clock enable */if (SAI1_client == 0){__HAL_RCC_SAI1_CLK_ENABLE();}SAI1_client ++;/**SAI1_A_Block_A GPIO ConfigurationPE2 ------> SAI1_MCLK_APE4 ------> SAI1_FS_APE5 ------> SAI1_SCK_APE6 ------> SAI1_SD_A*/GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Alternate = GPIO_AF6_SAI1;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);}
}void HAL_SAI_MspDeInit(SAI_HandleTypeDef* hsai)
{/* SAI1 */if(hsai->Instance==SAI1_Block_A){SAI1_client --;if (SAI1_client == 0){/* Peripheral clock disable */__HAL_RCC_SAI1_CLK_DISABLE();}/**SAI1_A_Block_A GPIO ConfigurationPE2 ------> SAI1_MCLK_APE4 ------> SAI1_FS_APE5 ------> SAI1_SCK_APE6 ------> SAI1_SD_A*/HAL_GPIO_DeInit(GPIOE, GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6);/* SAI1 DMA Deinit */HAL_DMA_DeInit(hsai->hdmarx);HAL_DMA_DeInit(hsai->hdmatx);}
}#ifndef __BSP_WAVPLAY_H
#define __BSP_WAVPLAY_H#ifdef __cplusplus
extern "C" {#endif#include "main.h"//
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK STM32开发板
//WAV 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2016/1/18
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
//All rights reserved
//********************************************************************************
//V1.0 说明
//1,支持16位/24位WAV文件播放
//2,最高可以支持到192K/24bit的WAV格式.
// #define WAV_SAI_TX_DMA_BUFSIZE 4096 //定义WAV TX DMA 数组大小(播放192Kbps@24bit的时候,需要设置4096大才不会卡)//RIFF块
typedef __packed struct
{uint32_t ChunkID; //chunk id;这里固定为"RIFF",即0X46464952uint32_t ChunkSize ; //集合大小;文件总大小-8uint32_t Format; //格式;WAVE,即0X45564157
}ChunkRIFF ;
//fmt块
typedef __packed struct
{uint32_t ChunkID; //chunk id;这里固定为"fmt ",即0X20746D66uint32_t ChunkSize ; //子集合大小(不包括ID和Size);这里为:20.uint16_t AudioFormat; //音频格式;0X01,表示线性PCM;0X11表示IMA ADPCMuint16_t NumOfChannels; //通道数量;1,表示单声道;2,表示双声道;uint32_t SampleRate; //采样率;0X1F40,表示8Khzuint32_t ByteRate; //字节速率; uint16_t BlockAlign; //块对齐(字节); uint16_t BitsPerSample; //单个采样数据大小;4位ADPCM,设置为4
// uint16_t ByteExtraData; //附加的数据字节;2个; 线性PCM,没有这个参数
}ChunkFMT;
//fact块
typedef __packed struct
{uint32_t ChunkID; //chunk id;这里固定为"fact",即0X74636166;uint32_t ChunkSize ; //子集合大小(不包括ID和Size);这里为:4.uint32_t NumOfSamples; //采样的数量;
}ChunkFACT;
//LIST块
typedef __packed struct
{uint32_t ChunkID; //chunk id;这里固定为"LIST",即0X74636166;uint32_t ChunkSize ; //子集合大小(不包括ID和Size);这里为:4.
}ChunkLIST;//data块
typedef __packed struct
{uint32_t ChunkID; //chunk id;这里固定为"data",即0X5453494Cuint32_t ChunkSize ; //子集合大小(不包括ID和Size)
}ChunkDATA;//wav头
typedef __packed struct
{ ChunkRIFF riff; //riff块ChunkFMT fmt; //fmt块
// ChunkFACT fact; //fact块 线性PCM,没有这个结构体 ChunkDATA data; //data块
}__WaveHeader; //wav 播放控制结构体
typedef __packed struct
{ uint16_t audioformat; //音频格式;0X01,表示线性PCM;0X11表示IMA ADPCMuint16_t nchannels; //通道数量;1,表示单声道;2,表示双声道; uint16_t blockalign; //块对齐(字节); uint32_t datasize; //WAV数据大小 uint32_t totsec ; //整首歌时长,单位:秒uint32_t cursec ; //当前播放时长uint32_t bitrate; //比特率(位速)uint32_t samplerate; //采样率 uint16_t bps; //位数,比如16bit,24bit,32bituint32_t datastart; //数据帧开始的位置(在文件里面的偏移)
}__wavctrl; uint8_t wav_decode_init(uint8_t* fname,__wavctrl* wavx);
uint32_t wav_buffill(uint8_t *buf,uint16_t size,uint8_t bits);
//void wav_sai_dma_tx_callback(void);
uint8_t wav_play_song(uint8_t* fname);extern __wavctrl wavctrl; //WAV控制结构体#ifdef __cplusplus
}
#endif#endif /* __BSP_WAVPLAY_H */#include "bsp_wavplay.h"
#include "bsp_audioplay.h"
#include "bsp_printf.h"
#include "delay.h"
#include "bsp_malloc.h"
#include "ff.h"
#include "bsp_sai.h"
#include "bsp_wm8978.h"
#include "bsp_key.h"
#include "string.h"//
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK STM32开发板
//WAV 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2016/1/18
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
//All rights reserved
//********************************************************************************
//V1.0 说明
//1,支持16位/24位WAV文件播放
//2,最高可以支持到192K/24bit的WAV格式.
// __wavctrl wavctrl; //WAV控制结构体
volatile uint8_t wavtransferend=0; //sai传输完成标志void BSP_SAI_WAV_M0_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{uint32_t fillnum; if((audiodev.status&0X01)==0){memset(audiodev.saibuf1,0,WAV_SAI_TX_DMA_BUFSIZE);}else{fillnum=wav_buffill(audiodev.saibuf1,WAV_SAI_TX_DMA_BUFSIZE,wavctrl.bps);if(fillnum!=WAV_SAI_TX_DMA_BUFSIZE)//播放结束?{wavtransferend=1;} }
}void BSP_SAI_WAV_M1_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{uint32_t fillnum; if((audiodev.status&0X01)==0){memset(audiodev.saibuf2,0,WAV_SAI_TX_DMA_BUFSIZE);}else{fillnum=wav_buffill(audiodev.saibuf2,WAV_SAI_TX_DMA_BUFSIZE,wavctrl.bps);if(fillnum!=WAV_SAI_TX_DMA_BUFSIZE)//播放结束?{wavtransferend=1;} }
} //WAV解析初始化
//fname:文件路径+文件名
//wavx:wav 信息存放结构体指针
//返回值:0,成功;1,打开文件失败;2,非WAV文件;3,DATA区域未找到.
uint8_t wav_decode_init(uint8_t* fname,__wavctrl* wavx)
{FIL*ftemp;uint8_t *buf; uint32_t br=0;uint8_t res=0;ChunkRIFF *riff;ChunkFMT *fmt;ChunkFACT *fact;ChunkDATA *data;ftemp=(FIL*)mymalloc(SRAMIN,sizeof(FIL));buf=mymalloc(SRAMIN,512);if(ftemp&&buf) //内存申请成功{res=f_open(ftemp,(TCHAR*)fname,FA_READ);//打开文件if(res==FR_OK){f_read(ftemp,buf,512,&br); //读取512字节在数据riff=(ChunkRIFF *)buf; //获取RIFF块if(riff->Format==0X45564157)//是WAV文件{fmt=(ChunkFMT *)(buf+12); //获取FMT块 fact=(ChunkFACT *)(buf+12+8+fmt->ChunkSize);//读取FACT块if(fact->ChunkID==0X74636166||fact->ChunkID==0X5453494C)wavx->datastart=12+8+fmt->ChunkSize+8+fact->ChunkSize;//具有fact/LIST块的时候(未测试)else wavx->datastart=12+8+fmt->ChunkSize; data=(ChunkDATA *)(buf+wavx->datastart); //读取DATA块if(data->ChunkID==0X61746164)//解析成功!{wavx->audioformat=fmt->AudioFormat; //音频格式wavx->nchannels=fmt->NumOfChannels; //通道数wavx->samplerate=fmt->SampleRate; //采样率wavx->bitrate=fmt->ByteRate*8; //得到位速wavx->blockalign=fmt->BlockAlign; //块对齐wavx->bps=fmt->BitsPerSample; //位数,16/24/32位wavx->datasize=data->ChunkSize; //数据块大小wavx->datastart=wavx->datastart+8; //数据流开始的地方. printf("wavx->audioformat:%d\r\n",wavx->audioformat);printf("wavx->nchannels:%d\r\n",wavx->nchannels);printf("wavx->samplerate:%d\r\n",wavx->samplerate);printf("wavx->bitrate:%d\r\n",wavx->bitrate);printf("wavx->blockalign:%d\r\n",wavx->blockalign);printf("wavx->bps:%d\r\n",wavx->bps);printf("wavx->datasize:%d\r\n",wavx->datasize);printf("wavx->datastart:%d\r\n",wavx->datastart); }else res=3;//data区域未找到.}else res=2;//非wav文件}else res=1;//打开文件错误}f_close(ftemp);myfree(SRAMIN,ftemp);//释放内存myfree(SRAMIN,buf); return 0;
}//填充buf
//buf:数据区
//size:填充数据量
//bits:位数(16/24)
//返回值:读到的数据个数
uint32_t wav_buffill(uint8_t *buf,uint16_t size,uint8_t bits)
{uint16_t readlen=0;uint32_t bread;uint16_t i;uint32_t *p,*pbuf;if(bits==24)//24bit音频,需要处理一下{readlen=(size/4)*3; //此次要读取的字节数f_read(audiodev.file,audiodev.tbuf,readlen,(UINT*)&bread);//读取数据 pbuf=(uint32_t*)buf;for(i=0;i<size/4;i++){ p=(uint32_t*)(audiodev.tbuf+i*3);pbuf[i]=p[0]; } bread=(bread*4)/3; //填充后的大小.}else {f_read(audiodev.file,buf,size,(UINT*)&bread);//16bit音频,直接读取数据 if(bread<size)//不够数据了,补充0{for(i=bread;i<size-bread;i++)buf[i]=0; }}return bread;
} //得到当前播放时间
//fx:文件指针
//wavx:wav播放控制器
void wav_get_curtime(FIL*fx,__wavctrl *wavx)
{long long fpos; wavx->totsec=wavx->datasize/(wavx->bitrate/8); //歌曲总长度(单位:秒) fpos=fx->fptr-wavx->datastart; //得到当前文件播放到的地方 wavx->cursec=fpos*wavx->totsec/wavx->datasize; //当前播放到第多少秒了?
}//播放某个WAV文件
//fname:wav文件路径.
//返回值:
//KEY0_PRES:下一曲
//KEY1_PRES:上一曲
//其他:错误
uint8_t wav_play_song(uint8_t* fname)
{uint8_t key;uint8_t res; audiodev.file=(FIL*)mymalloc(SRAMIN,sizeof(FIL));audiodev.saibuf1=mymalloc(SRAMIN,WAV_SAI_TX_DMA_BUFSIZE);audiodev.saibuf2=mymalloc(SRAMIN,WAV_SAI_TX_DMA_BUFSIZE);audiodev.tbuf=mymalloc(SRAMIN,WAV_SAI_TX_DMA_BUFSIZE);if(audiodev.file&&audiodev.saibuf1&&audiodev.saibuf2&&audiodev.tbuf){memset(audiodev.saibuf1,0,WAV_SAI_TX_DMA_BUFSIZE);memset(audiodev.saibuf2,0,WAV_SAI_TX_DMA_BUFSIZE); res=wav_decode_init(fname,&wavctrl);//得到文件的信息if(res==0)//解析文件成功{wavtransferend=0;if(wavctrl.bps==16){WM8978_I2S_Cfg(2,0); //飞利浦标准,16位数据长度BSP_SAI1_Init(SAI_PROTOCOL_DATASIZE_16BIT, wavctrl.samplerate);SAIA_SampleRate_Set(wavctrl.samplerate);//设置采样率 SAIA_TX_DMA_Init(16); HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_CPLT_CB_ID, BSP_SAI_WAV_M0_TX_Callback);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_M1CPLT_CB_ID, BSP_SAI_WAV_M1_TX_Callback);HAL_DMAEx_MultiBufferStart_IT(&hdma_sai1_a, (uint32_t)audiodev.saibuf1, (uint32_t)&hsai_BlockA1.Instance->DR, (uint32_t)audiodev.saibuf2, WAV_SAI_TX_DMA_BUFSIZE/2);}else if(wavctrl.bps==24){WM8978_I2S_Cfg(2,2); //飞利浦标准,24位数据长度BSP_SAI1_Init(SAI_PROTOCOL_DATASIZE_24BIT, wavctrl.samplerate); SAIA_SampleRate_Set(wavctrl.samplerate);//设置采样率 SAIA_TX_DMA_Init(24);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_CPLT_CB_ID, BSP_SAI_WAV_M0_TX_Callback);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_M1CPLT_CB_ID, BSP_SAI_WAV_M1_TX_Callback);HAL_DMAEx_MultiBufferStart_IT(&hdma_sai1_a, (uint32_t)audiodev.saibuf1, (uint32_t)&hsai_BlockA1.Instance->DR, (uint32_t)audiodev.saibuf2, WAV_SAI_TX_DMA_BUFSIZE/4);}else{res=0XFF;}if(res==0){res=f_open(audiodev.file,(TCHAR*)fname,FA_READ); //打开文件if(res==0){f_lseek(audiodev.file, wavctrl.datastart); //跳过文件头audiodev.status=3<<0;//开始播放+非暂停while(res==0){if(wavtransferend)//播放结束?{res=KEY0_PRES;break;} while(1){key=KEY_Scan(0); if(key==WKUP_PRES)//暂停{if(audiodev.status&0X01)audiodev.status&=~(1<<0);else audiodev.status|=0X01; }if(key==KEY2_PRES||key==KEY0_PRES)//下一曲/上一曲{res=key;break; }wav_get_curtime(audiodev.file,&wavctrl);//得到总时间和当前播放的时间 audio_msg_show(wavctrl.totsec,wavctrl.cursec,wavctrl.bitrate);if((audiodev.status&0X01)==0)delay_ms(10);else break;}}audiodev.status=0;}else {res=0XFF;}}}else{res=0XFF;} }else{res=0XFF; } myfree(SRAMIN,audiodev.tbuf); //释放内存myfree(SRAMIN,audiodev.saibuf1);//释放内存myfree(SRAMIN,audiodev.saibuf2);//释放内存 myfree(SRAMIN,audiodev.file); //释放内存 return res;
} #ifndef __BSP_MP3PLAY_H
#define __BSP_MP3PLAY_H#ifdef __cplusplus
extern "C" {#endif#include "main.h"#include <mp3dec.h>//
//本程序移植自helix MP3解码库
//ALIENTEK STM32开发板
//MP3 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2014/6/29
//版本：V1.0
//********************************************************************************
//V1.0 说明
//1,支持16位单声道/立体声MP3的解码
//2,支持CBR/VBR格式MP3解码
//3,支持ID3V1和ID3V2标签解析
//4,支持所有比特率(MP3最高是320Kbps)解码
// #define MP3_TITSIZE_MAX 40 //歌曲名字最大长度
#define MP3_ARTSIZE_MAX 40 //歌曲名字最大长度
#define MP3_FILE_BUF_SZ 5*1024 //MP3解码时,文件buf大小//ID3V1 标签
typedef __packed struct
{uint8_t id[3]; //ID,TAG三个字母uint8_t title[30]; //歌曲名字uint8_t artist[30]; //艺术家名字uint8_t year[4]; //年代uint8_t comment[30]; //备注uint8_t genre; //流派
}ID3V1_Tag;//ID3V2 标签头
typedef __packed struct
{uint8_t id[3]; //IDuint8_t mversion; //主版本号uint8_t sversion; //子版本号uint8_t flags; //标签头标志uint8_t size[4]; //标签信息大小(不包含标签头10字节).所以,标签大小=size+10.
}ID3V2_TagHead;//ID3V2.3 版本帧头
typedef __packed struct
{uint8_t id[4]; //帧IDuint8_t size[4]; //帧大小uint16_t flags; //帧标志
}ID3V23_FrameHead;//MP3 Xing帧信息(没有全部列出来,仅列出有用的部分)
typedef __packed struct
{uint8_t id[4]; //帧ID,为Xing/Infouint8_t flags[4]; //存放标志uint8_t frames[4]; //总帧数uint8_t fsize[4]; //文件总大小(不包含ID3)
}MP3_FrameXing;//MP3 VBRI帧信息(没有全部列出来,仅列出有用的部分)
typedef __packed struct
{uint8_t id[4]; //帧ID,为Xing/Infouint8_t version[2]; //版本号uint8_t delay[2]; //延迟uint8_t quality[2]; //音频质量,0~100,越大质量越好uint8_t fsize[4]; //文件总大小uint8_t frames[4]; //文件总帧数
}MP3_FrameVBRI;//MP3控制结构体
typedef __packed struct
{uint8_t title[MP3_TITSIZE_MAX]; //歌曲名字uint8_t artist[MP3_ARTSIZE_MAX]; //艺术家名字uint32_t totsec ; //整首歌时长,单位:秒uint32_t cursec ; //当前播放时长uint32_t bitrate; //比特率uint32_t samplerate; //采样率uint16_t outsamples; //PCM输出数据量大小(以16位为单位),单声道MP3,则等于实际输出*2(方便DAC输出)uint32_t datastart; //数据帧开始的位置(在文件里面的偏移)
}__mp3ctrl;extern __mp3ctrl * mp3ctrl;void mp3_i2s_dma_tx_callback(void) ;
void mp3_fill_buffer(uint16_t* buf,uint16_t size,uint8_t nch);
uint8_t mp3_id3v1_decode(uint8_t* buf,__mp3ctrl *pctrl);
uint8_t mp3_id3v2_decode(uint8_t* buf,uint32_t size,__mp3ctrl *pctrl);
uint8_t mp3_get_info(uint8_t *pname,__mp3ctrl* pctrl);
uint8_t mp3_play_song(uint8_t* fname);extern volatile uint8_t mp3transferend;#ifdef __cplusplus
}
#endif#endif /* __BSP_MP3PLAY_H */#include "bsp_mp3play.h"
#include "bsp_audioplay.h"
//#include "sys.h"
#include "delay.h"
#include "bsp_malloc.h"
#include "bsp_printf.h"
//#include "ff.h"
#include "string.h"
#include "bsp_sai.h"
#include "bsp_wm8978.h"
#include "bsp_key.h"
//#include "led.h"
//
//本程序移植自helix MP3解码库
//ALIENTEK STM32开发板
//MP3 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2014/6/29
//版本：V1.0
//********************************************************************************
//V1.0 说明
//1,支持16位单声道/立体声MP3的解码
//2,支持CBR/VBR格式MP3解码
//3,支持ID3V1和ID3V2标签解析
//4,支持所有比特率(MP3最高是320Kbps)解码
// __mp3ctrl * mp3ctrl; //mp3控制结构体
volatile uint8_t mp3transferend=0; //sai传输完成标志
volatile uint8_t mp3witchbuf=0; //saibufx指示标志void BSP_SAI_MP3_M0_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{mp3witchbuf = 1;mp3transferend=1;
}void BSP_SAI_MP3_M1_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{mp3witchbuf = 0;mp3transferend=1;
} //填充PCM数据到DAC
//buf:PCM数据首地址
//size:pcm数据量(16位为单位)
//nch:声道数(1,单声道,2立体声)
void mp3_fill_buffer(uint16_t* buf,uint16_t size,uint8_t nch)
{uint16_t i; uint16_t *p;while(mp3transferend==0);//等待传输完成mp3transferend=0;if(mp3witchbuf==0){p=(uint16_t*)audiodev.saibuf2;}else {p=(uint16_t*)audiodev.saibuf1;}if((audiodev.status&0X01)==0){memset(p,0,2304*2); //数据清零 }else{if(nch==2)for(i=0;i<size;i++)p[i]=buf[i];else //单声道{for(i=0;i<size;i++){p[2*i]=buf[i];p[2*i+1]=buf[i];}}}
} //解析ID3V1
//buf:输入数据缓存区(大小固定是128字节)
//pctrl:MP3控制器
//返回值:0,获取正常
// 其他,获取失败
uint8_t mp3_id3v1_decode(uint8_t* buf,__mp3ctrl *pctrl)
{ID3V1_Tag *id3v1tag;id3v1tag=(ID3V1_Tag*)buf;if (strncmp("TAG",(char*)id3v1tag->id,3)==0)//是MP3 ID3V1 TAG{if(id3v1tag->title[0])strncpy((char*)pctrl->title,(char*)id3v1tag->title,30);if(id3v1tag->artist[0])strncpy((char*)pctrl->artist,(char*)id3v1tag->artist,30); }else return 1;return 0;
}
//解析ID3V2
//buf:输入数据缓存区
//size:数据大小
//pctrl:MP3控制器
//返回值:0,获取正常
// 其他,获取失败
uint8_t mp3_id3v2_decode(uint8_t* buf,uint32_t size,__mp3ctrl *pctrl)
{ID3V2_TagHead *taghead;ID3V23_FrameHead *framehead; uint32_t t;uint32_t tagsize; //tag大小uint32_t frame_size; //帧大小 taghead=(ID3V2_TagHead*)buf; if(strncmp("ID3",(const char*)taghead->id,3)==0)//存在ID3?{tagsize=((uint32_t)taghead->size[0]<<21)|((uint32_t)taghead->size[1]<<14)|((uint16_t)taghead->size[2]<<7)|taghead->size[3];//得到tag 大小pctrl->datastart=tagsize; //得到mp3数据开始的偏移量if(tagsize>size)tagsize=size; //tagsize大于输入bufsize的时候,只处理输入size大小的数据if(taghead->mversion<3){printf("not supported mversion!\r\n");return 1;}t=10;while(t<tagsize){framehead=(ID3V23_FrameHead*)(buf+t);frame_size=((uint32_t)framehead->size[0]<<24)|((uint32_t)framehead->size[1]<<16)|((uint32_t)framehead->size[2]<<8)|framehead->size[3];//得到帧大小if (strncmp("TT2",(char*)framehead->id,3)==0||strncmp("TIT2",(char*)framehead->id,4)==0)//找到歌曲标题帧,不支持unicode格式!!{strncpy((char*)pctrl->title,(char*)(buf+t+sizeof(ID3V23_FrameHead)+1),AUDIO_MIN(frame_size-1,MP3_TITSIZE_MAX-1));}if (strncmp("TP1",(char*)framehead->id,3)==0||strncmp("TPE1",(char*)framehead->id,4)==0)//找到歌曲艺术家帧{strncpy((char*)pctrl->artist,(char*)(buf+t+sizeof(ID3V23_FrameHead)+1),AUDIO_MIN(frame_size-1,MP3_ARTSIZE_MAX-1));}t+=frame_size+sizeof(ID3V23_FrameHead);} }else pctrl->datastart=0;//不存在ID3,mp3数据是从0开始return 0;
} //获取MP3基本信息
//pname:MP3文件路径
//pctrl:MP3控制信息结构体
//返回值:0,成功
// 其他,失败
uint8_t mp3_get_info(uint8_t *pname,__mp3ctrl* pctrl)
{HMP3Decoder decoder;MP3FrameInfo frame_info;MP3_FrameXing* fxing;MP3_FrameVBRI* fvbri;FIL*fmp3;uint8_t *buf;uint32_t br;uint8_t res;int offset=0;uint32_t p;short samples_per_frame; //一帧的采样个数uint32_t totframes; //总帧数fmp3=mymalloc(SRAMIN,sizeof(FIL)); buf=mymalloc(SRAMIN,5*1024); //申请5K内存 if(fmp3&&buf)//内存申请成功{ f_open(fmp3,(const TCHAR*)pname,FA_READ);//打开文件res=f_read(fmp3,(char*)buf,5*1024,&br);if(res==0)//读取文件成功,开始解析ID3V2/ID3V1以及获取MP3信息{ mp3_id3v2_decode(buf,br,pctrl); //解析ID3V2数据f_lseek(fmp3,fmp3->obj.objsize-128); //偏移到倒数128的位置f_read(fmp3,(char*)buf,128,&br);//读取128字节mp3_id3v1_decode(buf,pctrl); //解析ID3V1数据 decoder=MP3InitDecoder(); //MP3解码申请内存f_lseek(fmp3,pctrl->datastart); //偏移到数据开始的地方f_read(fmp3,(char*)buf,5*1024,&br); //读取5K字节mp3数据offset=MP3FindSyncWord(buf,br); //查找帧同步信息if(offset>=0&&MP3GetNextFrameInfo(decoder,&frame_info,&buf[offset])==0)//找到帧同步信息了,且下一阵信息获取正常 { p=offset+4+32;fvbri=(MP3_FrameVBRI*)(buf+p);if(strncmp("VBRI",(char*)fvbri->id,4)==0)//存在VBRI帧(VBR格式){if (frame_info.version==MPEG1)samples_per_frame=1152;//MPEG1,layer3每帧采样数等于1152else samples_per_frame=576;//MPEG2/MPEG2.5,layer3每帧采样数等于576 totframes=((uint32_t)fvbri->frames[0]<<24)|((uint32_t)fvbri->frames[1]<<16)|((uint16_t)fvbri->frames[2]<<8)|fvbri->frames[3];//得到总帧数pctrl->totsec=totframes*samples_per_frame/frame_info.samprate;//得到文件总长度}else //不是VBRI帧,尝试是不是Xing帧(VBR格式){ if (frame_info.version==MPEG1) //MPEG1 {p=frame_info.nChans==2?32:17;samples_per_frame = 1152; //MPEG1,layer3每帧采样数等于1152}else{p=frame_info.nChans==2?17:9;samples_per_frame=576; //MPEG2/MPEG2.5,layer3每帧采样数等于576}p+=offset+4;fxing=(MP3_FrameXing*)(buf+p);if(strncmp("Xing",(char*)fxing->id,4)==0||strncmp("Info",(char*)fxing->id,4)==0)//是Xng帧{if(fxing->flags[3]&0X01)//存在总frame字段{totframes=((uint32_t)fxing->frames[0]<<24)|((uint32_t)fxing->frames[1]<<16)|((uint16_t)fxing->frames[2]<<8)|fxing->frames[3];//得到总帧数pctrl->totsec=totframes*samples_per_frame/frame_info.samprate;//得到文件总长度}else //不存在总frames字段{pctrl->totsec=fmp3->obj.objsize/(frame_info.bitrate/8);} }else //CBR格式,直接计算总播放时间{pctrl->totsec=fmp3->obj.objsize/(frame_info.bitrate/8);}} pctrl->bitrate=frame_info.bitrate; //得到当前帧的码率mp3ctrl->samplerate=frame_info.samprate; //得到采样率. if(frame_info.nChans==2)mp3ctrl->outsamples=frame_info.outputSamps; //输出PCM数据量大小 else mp3ctrl->outsamples=frame_info.outputSamps*2; //输出PCM数据量大小,对于单声道MP3,直接*2,补齐为双声道输出}else res=0XFE;//未找到同步帧 MP3FreeDecoder(decoder);//释放内存 } f_close(fmp3);}else res=0XFF;myfree(SRAMIN,fmp3);myfree(SRAMIN,buf); return res;
}
//得到当前播放时间
//fx:文件指针
//mp3x:mp3播放控制器
void mp3_get_curtime(FIL*fx,__mp3ctrl *mp3x)
{uint32_t fpos=0; if(fx->fptr>mp3x->datastart)fpos=fx->fptr-mp3x->datastart; //得到当前文件播放到的地方 mp3x->cursec=fpos*mp3x->totsec/(fx->obj.objsize-mp3x->datastart); //当前播放到第多少秒了?
}
//mp3文件快进快退函数
//pos:需要定位到的文件位置
//返回值:当前文件位置(即定位后的结果)
uint32_t mp3_file_seek(uint32_t pos)
{if(pos>audiodev.file->obj.objsize){pos=audiodev.file->obj.objsize;}f_lseek(audiodev.file,pos);return audiodev.file->fptr;
}
//播放一曲MP3音乐
//fname:MP3文件路径.
//返回值:0,正常播放完成
//[b7]:0,正常状态;1,错误状态
//[b6:0]:b7=0时,表示操作码
// b7=1时,表示有错误(这里不判定具体错误,0X80~0XFF,都算是错误)
uint8_t mp3_play_song(uint8_t* fname)
{ HMP3Decoder mp3decoder;MP3FrameInfo mp3frameinfo;uint8_t key;uint8_t res;uint8_t* buffer; //输入buffer uint8_t* readptr; //MP3解码读指针int offset=0; //偏移量int outofdata=0;//超出数据范围int bytesleft=0;//buffer还剩余的有效数据uint32_t br=0; int err=0; mp3transferend=0; //sai传输完成标志mp3witchbuf=0; //saibufx指示标志
// BSP_SAI_TX_Callback = BSP_SAI_TX_Callback_MP3;mp3ctrl=mymalloc(SRAMIN,sizeof(__mp3ctrl)); buffer=mymalloc(SRAMIN,MP3_FILE_BUF_SZ); //申请解码buf大小audiodev.file=(FIL*)mymalloc(SRAMIN,sizeof(FIL));audiodev.saibuf1=mymalloc(SRAMIN,2304*2);audiodev.saibuf2=mymalloc(SRAMIN,2304*2);audiodev.tbuf=mymalloc(SRAMIN,2304*2);audiodev.file_seek=mp3_file_seek;if(!mp3ctrl||!buffer||!audiodev.file||!audiodev.saibuf1||!audiodev.saibuf2||!audiodev.tbuf)//内存申请失败{myfree(SRAMIN,mp3ctrl);myfree(SRAMIN,buffer);myfree(SRAMIN,audiodev.file);myfree(SRAMIN,audiodev.saibuf1);myfree(SRAMIN,audiodev.saibuf2);myfree(SRAMIN,audiodev.tbuf); return 0xff; //错误} memset(audiodev.saibuf1,0,2304*2); //数据清零 memset(audiodev.saibuf2,0,2304*2); //数据清零 memset(mp3ctrl,0,sizeof(__mp3ctrl));//数据清零 res=mp3_get_info(fname,mp3ctrl); if(res==0){ printf(" title:%s\r\n",mp3ctrl->title); printf(" artist:%s\r\n",mp3ctrl->artist); printf(" bitrate:%dbps\r\n",mp3ctrl->bitrate); printf("samplerate:%d\r\n", mp3ctrl->samplerate); printf(" totalsec:%d\r\n",mp3ctrl->totsec); WM8978_I2S_Cfg(2,0); //飞利浦标准,16位数据长度BSP_SAI1_Init(SAI_PROTOCOL_DATASIZE_16BIT, mp3ctrl->samplerate);SAIA_SampleRate_Set(mp3ctrl->samplerate);//设置采样率 SAIA_TX_DMA_Init(16); HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_CPLT_CB_ID, BSP_SAI_MP3_M0_TX_Callback);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_M1CPLT_CB_ID, BSP_SAI_MP3_M1_TX_Callback);HAL_DMAEx_MultiBufferStart_IT(&hdma_sai1_a, (uint32_t)audiodev.saibuf1, (uint32_t)&hsai_BlockA1.Instance->DR, (uint32_t)audiodev.saibuf2, mp3ctrl->outsamples);mp3decoder=MP3InitDecoder(); //MP3解码申请内存res=f_open(audiodev.file,(char*)fname,FA_READ); //打开文件}if(res==0&&mp3decoder!=0)//打开文件成功{ f_lseek(audiodev.file,mp3ctrl->datastart); //跳过文件头中tag信息audio_start(); //开始播放 //HAL_SAI_Transmit_DMA(&hsai_BlockA1, audiodev.saibuf1, mp3ctrl->outsamples);while(res==0){readptr=buffer; //MP3读指针指向bufferoffset=0; //偏移量为0outofdata=0; //数据正常bytesleft=0; res=f_read(audiodev.file,buffer,MP3_FILE_BUF_SZ,&br);//一次读取MP3_FILE_BUF_SZ字节if(res)//读数据出错了{res=0xff;break;}if(br==0) //读数为0,说明解码完成了.{res=KEY0_PRES; //播放完成break;}bytesleft+=br; //buffer里面有多少有效MP3数据?err=0; while(!outofdata)//没有出现数据异常(即可否找到帧同步字符){offset=MP3FindSyncWord(readptr,bytesleft);//在readptr位置,开始查找同步字符if(offset<0) //没有找到同步字符,跳出帧解码循环{ outofdata=1;//没找到帧同步字符}else //找到同步字符了{readptr+=offset; //MP3读指针偏移到同步字符处.bytesleft-=offset; //buffer里面的有效数据个数,必须减去偏移量err=MP3Decode(mp3decoder,&readptr,&bytesleft,(short*)audiodev.tbuf,0);//解码一帧MP3数据if(err!=0){printf("decode error:%d\r\n",err);break;}else{MP3GetLastFrameInfo(mp3decoder,&mp3frameinfo); //得到刚刚解码的MP3帧信息if(mp3ctrl->bitrate!=mp3frameinfo.bitrate) //更新码率{mp3ctrl->bitrate=mp3frameinfo.bitrate; }mp3_fill_buffer((uint16_t*)audiodev.tbuf,mp3frameinfo.outputSamps,mp3frameinfo.nChans);//填充pcm数据}if(bytesleft<MAINBUF_SIZE*2)//当数组内容小于2倍MAINBUF_SIZE的时候,必须补充新的数据进来.{ memmove(buffer,readptr,bytesleft);//移动readptr所指向的数据到buffer里面,数据量大小为:bytesleftf_read(audiodev.file,buffer+bytesleft,MP3_FILE_BUF_SZ-bytesleft,&br);//补充余下的数据if(br<MP3_FILE_BUF_SZ-bytesleft){memset(buffer+bytesleft+br,0,MP3_FILE_BUF_SZ-bytesleft-br); }bytesleft=MP3_FILE_BUF_SZ; readptr=buffer; } while(1){key=KEY_Scan(0); if(key==WKUP_PRES)//暂停{if(audiodev.status&0X01)audiodev.status&=~(1<<0);else audiodev.status|=0X01; }if(key==KEY2_PRES||key==KEY0_PRES)//下一曲/上一曲{outofdata=1;res=key;break; }mp3_get_curtime(audiodev.file,mp3ctrl); audiodev.totsec=mp3ctrl->totsec; //参数传递audiodev.cursec=mp3ctrl->cursec;audiodev.bitrate=mp3ctrl->bitrate;audiodev.samplerate=mp3ctrl->samplerate;audiodev.bps=16;//MP3仅支持16位if((audiodev.status&0X01)==0){delay_ms(10);} else//正常播放{break;} }} } }audio_stop();//关闭音频输出}else res=0xff;//错误f_close(audiodev.file);MP3FreeDecoder(mp3decoder); //释放内存 myfree(SRAMIN,mp3ctrl);myfree(SRAMIN,buffer);myfree(SRAMIN,audiodev.file);myfree(SRAMIN,audiodev.saibuf1);myfree(SRAMIN,audiodev.saibuf2);myfree(SRAMIN,audiodev.tbuf);return res;
}#ifndef __BSP_FLACPLAY_H
#define __BSP_FLACPLAY_H #ifdef __cplusplus
extern "C" {#endif#include "main.h"#include <inttypes.h>
#include <string.h>
#include "flacdecoder.h"
#include "ff.h" //
//本程序移植自RockBox的flac解码库
//ALIENTEK STM32开发板
//FLAC 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2014/6/29
//版本：V1.0
//********************************************************************************
//V1.0 说明
//1,支持16/24位单声道/立体声flac的解码
//2,最高支持192K/16bit或96K/24bit的flac解码
// //flaC 标签
typedef __packed struct
{uint8_t id[3]; //ID,在文件起始位置,必须是flaC 4个字母
}FLAC_Tag;//metadata 数据块头信息结构体
typedef __packed struct
{uint8_t head; //metadata block头uint8_t size[3]; //metadata block数据长度
}MD_Block_Head;//FLAC控制结构体
typedef __packed struct
{ uint32_t totsec ; //整首歌时长,单位:秒uint32_t cursec ; //当前播放时长uint32_t bitrate; //比特率uint32_t samplerate; //采样率uint16_t outsamples; //PCM输出数据量大小uint16_t bps; //位数,比如16bit,24bit,32bituint32_t datastart; //数据帧开始的位置(在文件里面的偏移)
}__flacctrl;extern __flacctrl * flacctrl;uint8_t flac_init(FIL* fx,__flacctrl* fctrl,FLACContext* fc);
void flac_i2s_dma_tx_callback(void);
void flac_get_curtime(FIL*fx,__flacctrl *flacx);
uint8_t flac_play_song(uint8_t* fname);extern volatile uint8_t flactransferend; //sai传输完成标志#ifdef __cplusplus
}
#endif#endif /* __BSP_FLACPLAY_H */#include "bsp_flacplay.h"
#include "ff.h"
#include "bsp_sai.h"
#include "bsp_wm8978.h"
#include "bsp_malloc.h"
#include "bsp_printf.h"
#include "bsp_key.h"
//#include "led.h"
#include "delay.h"
#include "bsp_audioplay.h"//
//本程序移植自RockBox的flac解码库
//ALIENTEK STM32开发板
//FLAC 解码代码
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2014/6/29
//版本：V1.0
//********************************************************************************
//V1.0 说明
//1,支持16/24位单声道/立体声flac的解码
//2,最高支持192K/16bit或96K/24bit的flac解码
// __flacctrl * flacctrl; //flac解码控制结构体
volatile uint8_t flactransferend=0; //sai传输完成标志
volatile uint8_t flacwitchbuf=0; //saibufx指示标志
FLACContext *fc=0; void BSP_SAI_FLAC_M0_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{flacwitchbuf = 1;flactransferend=1;
}void BSP_SAI_FLAC_M1_TX_Callback(DMA_HandleTypeDef *_hdma) //TX回调函数
{flacwitchbuf = 0;flactransferend=1;
} //分析FLAC文件
//fx:flac文件指针
//fc:flac解码容器
//返回值:0,分析成功
// 其他,错误代码
uint8_t flac_init(FIL* fx,__flacctrl* fctrl,FLACContext* fc)
{FLAC_Tag * flactag;MD_Block_Head *flacblkh;uint8_t *buf; uint8_t endofmetadata=0; //最后一个metadata标记int blocklength; uint32_t br;uint8_t res;buf=mymalloc(SRAMIN,512); //申请512字节内存if(!buf)return 1; //内存申请失败 f_lseek(fx,0); //偏移到文件头f_read(fx,buf,4,&br); //读取4字节 flactag=(FLAC_Tag*)buf; //强制转换为flac tag标签if(strncmp("fLaC",(char*)flactag->id,4)!=0) {myfree(SRAMIN,buf); //释放内存return 2; //非flac文件} while(!endofmetadata) {f_read(fx,buf,4,&br);if(br<4)break;flacblkh=(MD_Block_Head*)buf;endofmetadata=flacblkh->head&0X80; //判断是不是最后一个block?blocklength=((uint32_t)flacblkh->size[0]<<16)|((uint16_t)flacblkh->size[1]<<8)|(flacblkh->size[2]);//得到块大小if((flacblkh->head&0x7f)==0) //head最低7位为0,则表示是STREAMINFO块{ res=f_read(fx,buf,blocklength,&br);if(res!=FR_OK)break; fc->min_blocksize=((uint16_t)buf[0]<<8) |buf[1]; //最小块大小fc->max_blocksize=((uint16_t)buf[2]<<8) |buf[3]; //最大块大小fc->min_framesize=((uint32_t)buf[4]<<16)|((uint16_t)buf[5]<<8)|buf[6];//最小帧大小fc->max_framesize=((uint32_t)buf[7]<<16)|((uint16_t)buf[8]<<8)|buf[9];//最大帧大小fc->samplerate=((uint32_t)buf[10]<<12)|((uint16_t)buf[11]<<4)|((buf[12]&0xf0)>>4);//采样率fc->channels=((buf[12]&0x0e)>>1)+1; //音频通道数fc->bps=((((uint16_t)buf[12]&0x01)<<4)|((buf[13]&0xf0)>>4))+1; //采样位数16?24?32? fc->totalsamples=((uint32_t)buf[14]<<24)|((uint32_t)buf[15]<<16)|((uint16_t)buf[16]<<8)|buf[17];//一个声道的总采样数fctrl->samplerate=fc->samplerate;fctrl->totsec=(fc->totalsamples/fc->samplerate);//得到总时间 }else //忽略其他帧的处理 { if(f_lseek(fx,fx->fptr+blocklength)!=FR_OK){ myfree(SRAMIN,buf);return 3;}}} myfree(SRAMIN,buf);//释放内存.if(fctrl->totsec){fctrl->outsamples=fc->max_blocksize*2;//PCM输出数据量(*2,表示2个声道的数据量)fctrl->bps=fc->bps; //采样位数(16/24/32)fctrl->datastart=fx->fptr; //FLAC数据帧开始的地址fctrl->bitrate=((fx->obj.objsize-fctrl->datastart)*8)/fctrl->totsec;//得到FLAC的位速}else return 4; //总时间为0?有问题的flac文件return 0;
} //得到当前播放时间
//fx:文件指针
//flacctrl:flac播放控制器
void flac_get_curtime(FIL*fx,__flacctrl *flacctrl)
{long long fpos=0; if(fx->fptr>flacctrl->datastart)fpos=fx->fptr-flacctrl->datastart; //得到当前文件播放到的地方 flacctrl->cursec=fpos*flacctrl->totsec/(fx->obj.objsize-flacctrl->datastart); //当前播放到第多少秒了?
}
//flac文件快进快退函数
//pos:需要定位到的文件位置
//返回值:当前文件位置(即定位后的结果)
uint32_t flac_file_seek(uint32_t pos)
{if(pos>audiodev.file->obj.objsize){pos=audiodev.file->obj.objsize;}f_lseek(audiodev.file,pos);return audiodev.file->fptr;
}
//播放一曲FLAC音乐
//fname:FLAC文件路径.
//返回值:0,正常播放完成
//[b7]:0,正常状态;1,错误状态
//[b6:0]:b7=0时,表示操作码
// b7=1时,表示有错误(这里不判定具体错误,0X80~0XFF,都算是错误)
uint8_t flac_play_song(uint8_t* fname)
{ int bytesleft;int consumed;uint8_t res=0; uint32_t br=0; uint8_t* buffer=0; uint8_t* decbuf0=0; uint8_t* decbuf1=0; uint8_t* p8=0; uint32_t flac_fptr=0; uint8_t key;fc=mymalloc(SRAMIN,sizeof(FLACContext)); flacctrl=mymalloc(SRAMIN,sizeof(__flacctrl)); audiodev.file=(FIL*)mymalloc(SRAMIN,sizeof(FIL));audiodev.file_seek=flac_file_seek;if(!fc||!audiodev.file||!flacctrl)res=1;//内存申请错误else{ memset(fc,0,sizeof(FLACContext));//fc所有内容清零 res=f_open(audiodev.file,(char*)fname,FA_READ); //读取文件错误 if(res==FR_OK){res=flac_init(audiodev.file,flacctrl,fc); //flac解码初始化 if(fc->min_blocksize==fc->max_blocksize&&fc->max_blocksize!=0)//必须min_blocksize等于max_blocksize{if(fc->bps==24) //24位音频数据{ audiodev.saibuf1=mymalloc(SRAMIN,fc->max_blocksize*8);audiodev.saibuf2=mymalloc(SRAMIN,fc->max_blocksize*8); }else //16位音频数据{audiodev.saibuf1=mymalloc(SRAMIN,fc->max_blocksize*4);audiodev.saibuf2=mymalloc(SRAMIN,fc->max_blocksize*4); }buffer=mymalloc(SRAMDTCM,fc->max_framesize); //申请解码帧缓存 decbuf0=mymalloc(SRAMDTCM,fc->max_blocksize*4);decbuf1=mymalloc(SRAMDTCM,fc->max_blocksize*4);}else res+=1;//不支持的音频格式 }}if(buffer&&audiodev.saibuf1&&audiodev.saibuf2&&decbuf0&&decbuf1&&res==0){ flactransferend=0; flacwitchbuf=0; printf("\r\n Blocksize: %d .. %d\r\n", fc->min_blocksize,fc->max_blocksize);printf(" Framesize: %d .. %d\r\n",fc->min_framesize,fc->max_framesize);printf(" Samplerate: %d\r\n", fc->samplerate);printf(" Channels: %d\r\n", fc->channels);printf(" Bits per sample: %d\r\n", fc->bps);printf(" Metadata length: %d\r\n", flacctrl->datastart);printf(" Total Samples: %lu\r\n",fc->totalsamples);printf(" Duration: %d s\r\n",flacctrl->totsec);printf(" Bitrate: %d kbps\r\n",flacctrl->bitrate); if(flacctrl->bps==24) //24位音频数据{ memset(audiodev.saibuf1,0,fc->max_blocksize*8);memset(audiodev.saibuf2,0,fc->max_blocksize*8);WM8978_I2S_Cfg(2,2); //飞利浦标准,24位数据长度BSP_SAI1_Init(SAI_PROTOCOL_DATASIZE_24BIT, fc->samplerate);SAIA_SampleRate_Set(fc->samplerate); //设置采样率 SAIA_TX_DMA_Init(24);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_CPLT_CB_ID, BSP_SAI_FLAC_M0_TX_Callback);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_M1CPLT_CB_ID, BSP_SAI_FLAC_M1_TX_Callback);HAL_DMAEx_MultiBufferStart_IT(&hdma_sai1_a, (uint32_t)audiodev.saibuf1, (uint32_t)&hsai_BlockA1.Instance->DR, (uint32_t)audiodev.saibuf2, flacctrl->outsamples);}else //16位音频数据{memset(audiodev.saibuf1,0,fc->max_blocksize*4);memset(audiodev.saibuf2,0,fc->max_blocksize*4);WM8978_I2S_Cfg(2,0); //飞利浦标准,16位数据长度BSP_SAI1_Init(SAI_PROTOCOL_DATASIZE_16BIT, fc->samplerate);SAIA_SampleRate_Set(fc->samplerate); //设置采样率 SAIA_TX_DMA_Init(16); HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_CPLT_CB_ID, BSP_SAI_FLAC_M0_TX_Callback);HAL_DMA_RegisterCallback(&hdma_sai1_a, HAL_DMA_XFER_M1CPLT_CB_ID, BSP_SAI_FLAC_M1_TX_Callback);HAL_DMAEx_MultiBufferStart_IT(&hdma_sai1_a, (uint32_t)audiodev.saibuf1, (uint32_t)&hsai_BlockA1.Instance->DR, (uint32_t)audiodev.saibuf2, flacctrl->outsamples);} f_read(audiodev.file,buffer,fc->max_framesize,&br);//读取最大帧长数据 bytesleft=br;audio_start(); //开始播放 fc->decoded0=(int*)decbuf0; //解码数组0fc->decoded1=(int*)decbuf1; //解码数组1 flac_fptr=audiodev.file->fptr; //记录当前的文件位置.while(bytesleft) { while(flactransferend==0);//等待传输完成flactransferend = 0;if(flacwitchbuf==0)p8=audiodev.saibuf2;else p8=audiodev.saibuf1; if(fc->bps==24)res=flac_decode_frame24(fc,buffer,bytesleft,(s32*)p8);else res=flac_decode_frame16(fc,buffer,bytesleft,(s16*)p8); if(res!=0)//解码出错了 {res=0xff;break;} consumed=fc->gb.index/8;memmove(buffer,&buffer[consumed],bytesleft-consumed);bytesleft-=consumed; res=f_read(audiodev.file,&buffer[bytesleft],fc->max_framesize-bytesleft,&br); if(res)//读数据出错了{res=0xff;break;}if(br>0) {bytesleft+=br;}flac_fptr=audiodev.file->fptr; //记录当前的文件位置.// while(audiodev.status&(1<<1)) //正常播放中
// {
// flac_get_curtime(audiodev.file,flacctrl);//得到总时间和当前播放的时间
// audiodev.totsec=flacctrl->totsec; //参数传递
// audiodev.cursec=flacctrl->cursec;
// audiodev.bitrate=flacctrl->bitrate;
// audiodev.samplerate=flacctrl->samplerate;
// audiodev.bps=flacctrl->bps;
// if(audiodev.status&0X01)break; //没有按下暂停
// //else delay_ms(1000/OS_TICKS_PER_SEC);
// }
// if((audiodev.status&(1<<1))==0) //请求结束播放/播放完成
// {
// break;
// } while(1){key=KEY_Scan(0); if(key==WKUP_PRES)//暂停{if(audiodev.status&0X01)audiodev.status&=~(1<<0);else audiodev.status|=0X01; }if(key==KEY2_PRES||key==KEY0_PRES)//下一曲/上一曲{bytesleft = 0;res=key;break; }flac_get_curtime(audiodev.file,flacctrl);//得到总时间和当前播放的时间 audiodev.totsec=flacctrl->totsec; //参数传递audiodev.cursec=flacctrl->cursec;audiodev.bitrate=flacctrl->bitrate;audiodev.samplerate=flacctrl->samplerate;audiodev.bps=flacctrl->bps; if((audiodev.status&0X01)==0){delay_ms(10);} else//正常播放{break;} }} audio_stop();}else res=0xff;f_close(audiodev.file);myfree(SRAMIN,fc);myfree(SRAMIN,flacctrl);myfree(SRAMIN,audiodev.file);myfree(SRAMIN,audiodev.saibuf1);myfree(SRAMIN,audiodev.saibuf2); myfree(SRAMDTCM,buffer);myfree(SRAMDTCM,decbuf0);myfree(SRAMDTCM,decbuf1); return res;
} 总结：
1、
2、
3、双缓冲模式DMA需要设置为DMA_CIRCULAR
4、SAI_DMA中断优先级比SD_DMA中断优先级低，是因为在wavplay中断程序中会执行读SD卡
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