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/* ... */
#include "main.h"
Includes
FATFS SDFatFs;
FIL MyFile;
char SDPath[4];
typedef enum {
CARD_CONNECTED,
CARD_DISCONNECTED,
...}SD_ConnectionStateTypeDef;
osMessageQId ConnectionEvent;
static uint8_t isInitialized = 0;
static uint8_t isFsCreated = 0;
uint8_t workBuffer[2 * _MAX_SS];
Private variables
static void SystemClock_Config(void);
static void Error_Handler(void);
static void FS_AppThread(void const *argument);
static void FS_FileOperations(void);
static void SD_Initialize(void);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_IO_Init();
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
/* ... */
BSP_IO_ConfigPin(RSTI_PIN, IO_MODE_OUTPUT);
BSP_IO_WritePin(RSTI_PIN, BSP_IO_PIN_RESET);
if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
{
SD_Initialize();
osThreadDef(uSDThread, FS_AppThread, osPriorityNormal, 0, 8 * configMINIMAL_STACK_SIZE);
osThreadCreate(osThread(uSDThread), NULL);
osMessageQDef(osqueue, 10, uint16_t);
ConnectionEvent = osMessageCreate (osMessageQ(osqueue), NULL);
}if (FATFS_LinkDriver(&SD_Driver, SDPath) == 0) { ... }
osKernelStart();
for( ;; );
}{ ... }
/* ... */
static void FS_AppThread(void const *argument)
{
osEvent event;
if(BSP_SD_IsDetected())
{
osMessagePut ( ConnectionEvent, CARD_CONNECTED, osWaitForever);
}if (BSP_SD_IsDetected()) { ... }
for( ;; )
{
event = osMessageGet( ConnectionEvent, osWaitForever );
if( event.status == osEventMessage )
{
switch(event.value.v)
{
case CARD_CONNECTED:
BSP_LED_Off(LED3);
SD_Initialize();
FS_FileOperations();
break;
case CARD_CONNECTED:
case CARD_DISCONNECTED:
BSP_LED_Off(LED1);
BSP_LED_On(LED3);
if(isInitialized == 1)
{
isInitialized = 0;
f_mount(NULL, (TCHAR const*)"", 0);
}if (isInitialized == 1) { ... }
break;case CARD_DISCONNECTED:
}switch (event.value.v) { ... }
}if (event.status == osEventMessage) { ... }
}for (;;) { ... }
}{ ... }
/* ... */
static void FS_FileOperations(void)
{
FRESULT res;
uint32_t byteswritten, bytesread;
uint8_t wtext[] = "This is STM32 working with FatFs uSD + FreeRTOS";
uint8_t rtext[100];
if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK)
{
if (isFsCreated == 0)
{
if(f_mkfs(SDPath, FM_ANY, 0, workBuffer, sizeof(workBuffer)) != FR_OK)
{
BSP_LED_On(LED3);
return;
}if (f_mkfs(SDPath, FM_ANY, 0, workBuffer, sizeof(workBuffer)) != FR_OK) { ... }
isFsCreated = 1;
}if (isFsCreated == 0) { ... }
if(f_open(&MyFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
{
res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten > 0) && (res == FR_OK))
{
f_close(&MyFile);
if(f_open(&MyFile, "STM32.TXT", FA_READ) == FR_OK)
{
res = f_read(&MyFile, rtext, sizeof(rtext), (void *)&bytesread);
if((bytesread > 0) && (res == FR_OK))
{
f_close(&MyFile);
if((bytesread == byteswritten))
{
BSP_LED_On(LED1);
return;
}if ((bytesread == byteswritten)) { ... }
}if ((bytesread > 0) && (res == FR_OK)) { ... }
}if (f_open(&MyFile, "STM32.TXT", FA_READ) == FR_OK) { ... }
}if ((byteswritten > 0) && (res == FR_OK)) { ... }
}if (f_open(&MyFile, "STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK) { ... }
}if (f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK) { ... }
BSP_LED_On(LED3);
}{ ... }
/* ... */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(MFX_IRQOUT_PIN == GPIO_Pin)
{
if(BSP_SD_IsDetected())
{
osMessagePut ( ConnectionEvent, CARD_CONNECTED, osWaitForever);
}if (BSP_SD_IsDetected()) { ... }
else
{
BSP_LED_Off(LED1);
BSP_LED_Off(LED3);
osMessagePut ( ConnectionEvent, CARD_DISCONNECTED, osWaitForever);
}else { ... }
}if (MFX_IRQOUT_PIN == GPIO_Pin) { ... }
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_PeriphCLKInitTypeDef RCC_PeriphClkInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
Error_Handler();
}if (ret != HAL_OK) { ... }
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
Error_Handler();
}if (ret != HAL_OK) { ... }
RCC_PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SDIO | RCC_PERIPHCLK_CK48;
RCC_PeriphClkInitStruct.SdioClockSelection = RCC_SDIOCLKSOURCE_CK48;
RCC_PeriphClkInitStruct.Clk48ClockSelection = RCC_CK48CLKSOURCE_PLLSAIP;
RCC_PeriphClkInitStruct.PLLSAI.PLLSAIM = 8;
RCC_PeriphClkInitStruct.PLLSAI.PLLSAIN = 384;
RCC_PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV8;
HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInitStruct);
/* ... */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
Error_Handler();
}if (ret != HAL_OK) { ... }
}{ ... }
static void SD_Initialize(void)
{
if (isInitialized == 0)
{
if (BSP_SD_Init() == MSD_OK)
{
BSP_SD_ITConfig();
isInitialized = 1;
}if (BSP_SD_Init() == MSD_OK) { ... }
else
{
BSP_LED_On(LED3);
while (BSP_SD_IsDetected() != SD_PRESENT)
{}while (BSP_SD_IsDetected() != SD_PRESENT) { ... }
}else { ... }
}if (isInitialized == 0) { ... }
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_Off(LED1);
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t* file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t* file, uint32_t line) { ... }
/* ... */#endifPrivate functions