Overrun Error using USART1

[julien239955_stm1_stmicro_com]

Posted on May 16, 2011 at 15:09

Overrun Error using USART1

[julien239955_stm1_stmicro_com]

Posted on May 17, 2011 at 14:35

[EDIT] : I found another problem not regarding the STM32. The post is to be closed Thanks all.

OK I will change this.

I forgot to say something, my USART is linked to the PC by a XBee module and it is also stood by as the STM32 is. I'm trying a solution which just comes to me. I'll shared it here if it works.

[Andrew Neil]

Posted on May 17, 2011 at 14:35

    while( !(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)== SET) );

 

Never have a busy-loop wait in an ISR!

[julien239955_stm1_stmicro_com]

Posted on May 17, 2011 at 14:35

Thanks for the advise.

[Tesla DeLorean]

Posted on May 17, 2011 at 14:35

[EDIT] : I found another problem not regarding the STM32. The post is to be closed Thanks all.

 

OK I will change this.

 

 

I forgot to say something, my USART is linked to the PC by a XBee module and it is also stood by as the STM32 is. I'm trying a solution which just comes to me. I'll shared it here if it works.

Notwithstanding this apparent fix, you should always check for parity, framing, overrun, etc errors, and clear them by reading the data register. Even if you choose to ignore the error, it must be cleared before the USART will work properly again.