USART doesnot go into interrupt service routine

mehmet.karakaya · ‎2010-09-04

Posted on September 04, 2010 at 19:36

Tesla DeLorean · ‎2011-05-17

Posted on May 17, 2011 at 14:05

It is provided with IAR workbench installation.

Thanks, I've attached ST Micro's portion of the firmware/library code, basically loosing the EWARM projects or anything looking like IAR's

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mehmet.karakaya · ‎2011-05-17

Posted on May 17, 2011 at 14:05

hello ANN ,

first I use stm32f103ret6

second I use Raisonance RAID7

anyway here is my ISR

-----------------------------------------

void USART1_IRQHandler(void)

{

volatile unsigned int IIR;

IIR = USART1->SR;

if (IIR & USART_FLAG_RXNE) { // read interrupt

USART1->SR &= ~USART_FLAG_RXNE;

Rx_buffer[Rx_ptr] = USART_ReceiveData(USART1);

Rx_ptr++ ; if (Rx_ptr > 511) {Rx_ptr=0;com0err=1;}

if (ending_char()) do_instruction();

}

if (IIR & USART_FLAG_TC) {

USART1->SR &= ~USART_FLAG_TC; // clear interrupt

if (Tx_ptr < Tx_len) {

Tx_ptr++; send_char (Tx_buffer[Tx_ptr]);}

else USART_ITConfig(USART1, USART_IT_TC, DISABLE);

}

nanayakkaraan · ‎2011-05-17

Posted on May 17, 2011 at 14:05