Posted on February 02, 2016 at 14:20I have modified an STM32F4 example and developed a windows application to interact with it for sending data continuously.I am reading a file on PC line by line and sending continuously each line on a serial port (COM9) to which STM32F4Nucleo board is connected.
STM324 is running @84Mhz and UART is configured at 921600 Baudrate.
Host code :
loop :
while(1)
//being while loop
//read a line from a text file
if(line == ''EOF'')
break
else
{ send a line to COM Port
delay 500 ms
}
//End while loop
on STM32 :
int main(void)
{
HAL_Init();
/* Configure the System clock to 84 MHz */
SystemClock_Config();
/* Initialize UART */
USARTConfig();
/* Infinite loop */
while (1)
{
if (UART_ReceivedMSG((TMsg*) &Msg)) {
//do the processing of the MSg data
printf(Msg.Data);
}
attached is the file where UART_ReceivedMSG is defined.
So here I am able to see the data coming (on console I/O of the IDE I am using - IAR)
but at times I am getting a hardfault at
Get_DMA_Flag_Status >
uint32_t Get_DMA_Flag_Status(DMA_HandleTypeDef *handle_dma)
{
return (__HAL_DMA_GET_FLAG(handle_dma, __HAL_DMA_GET_FE_FLAG_INDEX(handle_dma)));
}
What could be the cause for this?
Is it some sort of non atomic operation happening at the handle_dma.How can I avoid it.
Thanks in advance !
#hardfault #hardfault #hardfault #uart #dma #dma #dma #stm32f4 #!stm32f4-!stm32f401
