Posted on April 05, 2017 at 16:25void test_fatfs()
{
FATFS SDFatFs; /* File system object for SD card logical drive */
FIL MyFile; /* File object */
const char wtext[] = 'Hello ! This is from STM32F103VET6 with RTOS';
FRESULT res; /* FatFs function common result code */
uint32_t byteswritten, bytesread; /* File write/read counts */
char rtext[256]; /* File read buffer */
//TEST SDIO begin
if(retSD == 0)
{
printf('inside if retSD \n');
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_6,
GPIO_PIN_RESET);
HAL_Delay(1000);
/*♯♯-2- Register the file system object to the
FatFs module ♯♯♯*/
if(f_mount(&SDFatFs, (TCHAR const*)SD_Path,
0) != FR_OK)
{
/* FatFs Initialization Error : set
the red LED on */
printf('FMOUNT FAIL! \n');
while(1);
}
else
{
printf('inside else on f_mount
\n');
printf('f_mount OK! \n');
res = f_open(&MyFile, 'hello.txt',
FA_CREATE_ALWAYS | FA_WRITE);
printf('after res command! \n');
/*♯♯-4- Create &
Open a new text file object with write access♯*/
//if(f_open(&MyFile, 'Hello.txt', FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
if (res != FR_OK)
{
/* 'Hello.txt'
file Open for write Error : set the red LED on */
printf('f_open FAIL! \n');
while(1);
}
else
{
printf('f_open OK! \n');
/♯♯-5- Write data to the text file ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯/
res =
f_write(&MyFile, wtext, sizeof(wtext), (void*)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
/* 'Hello.txt' file Write or EOF Error : set the red LED on */
while(1);
}
else
{
/*♯♯-6- Successful open/write : set the blue LED on */
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_5, GPIO_PIN_SET);
f_close(&MyFile);
}
}
}
}
}
*
*void reading_file_test()
{
UINT bw,size;
FRESULT fr; /* FatFs return code */
char line[82]; /* Line buffer */
FIL MyFile; /* File object */
FATFS SDFatFsRead;
/TESTING READING FILE BEGIN/
/* Open a text file */
f_mount(&SDFatFsRead, (TCHAR const*)SD_Path, 0);
fr = f_open(&MyFile, 'test.txt', FA_READ);
printf('Reading file \n \n');
/* Read all lines and display it */
while (f_gets(line, sizeof line, &MyFile))
printf(line);
/* Close the file */
printf('\n \n Finished reading file.. \n \n');
f_close(&MyFile);
/TESTING READING FILE END/
}
static void StartDefaultTask(void const * argument)
{
/====variable declaration=====/
uint32_t count = 0;
(void) argument;
/====variable declaration=====
/* init code for FATFS */
MX_FATFS_Init();
/* init code for USB_DEVICE */
MX_USB_DEVICE_Init();
/* USER CODE BEGIN StartDefaultTask */
/* Infinite loop */
xSemaphoreGive(Sem1);
for (;;)
{//thread1 endless loop begin
if(xSemaphoreTake(Sem1, portMAX_DELAY) == pdTRUE)
{
printf('Start Default Task! \n');
printf('Task 1, DefaultTask running!
==================================\n \n');
*test_fatfs(); * //task thread_2 1
==> *Stop here and never continue to Task2, why ?? *
vTaskDelay(100);
/* Wake the second task. */
xSemaphoreGive(Sem2);
}//end if xSemaphoreTake Sem1
}//thread1 endless loop end
/*
for(;;)
{
osDelay(1);
}
*/
/* USER CODE END StartDefaultTask */
}
static void StartSecondTask(void const * argument)
{
for (;;)
{//thread2 endless loop begin
/* Wait for Sem2 */
if(xSemaphoreTake(Sem2, portMAX_DELAY) == pdTRUE)
{
//second task
printf('Start Second Task! \n');
printf('Task 2, SecondTask
running!============================== \n \n');
reading_file_test(); //task on thread 2
vTaskDelay(200);
/* Wake the first task. */
xSemaphoreGive(Sem1);
}//end xSemaphoreTake Sem2
}//thread2 endless loop end
}
