Posted on August 14, 2008 at 05:49Hello,
I'm searching for a advice for debugging.
In a application, I receive via UART1 characters
in the FIFO through UART_RxHalfFull.
It set a Message to a Task to calculate the chars.
At the end of the Task, the Interrupt UART_RxHalfFull
will be set again.
Code:
ISR:
{
UART_ItConfig(UART1,UART_RxHalfFull|UART_TimeOutNotEmpty, DISABLE);
SetMessage(ProcessChars);
}
Task:
if ( ProcessChars)
{
while (UART1->SR & UART_RxBufNotEmpty ) {
ProcessChars;
}
UART_ItConfig(UART1,UART_RxHalfFull|UART_TimeOutNotEmpty, ENABLE);
/* Reset bit WFI in the RCCU_SMR register */
RCCU->SMR &= 0xFE ;
}
[/CODE]
It runs, as expected. But after a random count,
the core does'nt wake up, and I get the UART_OverrunError.
How can I debug, the wakeup of the core?
I can see the timing per IO-Ports on the Oszi.
But why does'nt wake up the core sometimes.
Any idea?
Thanks,
Steffen
