Posted on February 23, 2016 at 06:48I use stm32f407zg and stemwin library and freertos.
when I want load BMP , my microcontroller gose to HardFault after put some pixel on lcd( about half or less).
FRESULT resultBMP;
unsigned char _acBuffer[4096];
FIL * phFile;
FIL imageFile;
uint32_t NumBytesRead;
int _GetDataSD(void * p, const U8 ** ppData, uint16_t NumBytesReq, U32 Off) {
phFile = (FIL *)p;
// Check buffer size
if (NumBytesReq > sizeof(_acBuffer)) {
NumBytesReq = sizeof(_acBuffer);
}
// Set file pointer to the required position
resultBMP = f_lseek(phFile, Off);
// Read data into buffer
resultBMP = f_read(phFile, _acBuffer, NumBytesReq, (uint32_t *)&NumBytesRead);
if(NumBytesRead < NumBytesReq)
f_close(phFile);
// Set data pointer to the beginning of the buffer
*ppData = _acBuffer;
// Return number of available bytes
return NumBytesRead;
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//================================================================================================
//////////////////////////////////////////////////////////////////////////////////////////////////
void MyGui_Draw(char * sFilename)
{
resultBMP = f_open(&imageFile, sFilename , FA_READ);
if(resultBMP == FR_OK)
GUI_BMP_DrawEx(_GetDataSD, &imageFile,100,100);
f_close(&imageFile);
}
