Posted on August 29, 2005 at 07:04Hi, I have some problem with parity check on bytes received by UART. The settings for UART are :
UART_OnOffConfig(UART0, ENABLE);
UART_FifoConfig (UART0, DISABLE);
UART_FifoReset(UART0, UART_RxFIFO);
UART_FifoReset(UART0, UART_TxFIFO);
UART_LoopBackConfig(UART0, DISABLE);
UART_ItConfig(UART0, UART_ParityError, ENABLE);
UART_Config(UART0, 9600, UART_EVEN_PARITY, UART_1_StopBits,UARTM_8D_P);
UART_RxConfig(UART0, ENABLE);
I try to receive bytes from device with both even and odd parity (i'm sure in the correct way checking with oscilloscope) but when i check the parity of received byte with
while(!(UART_FlagStatus(UART0) & UART_RxBufFull));
UART_ByteReceive(UART0,(u8 *)&str_viewr[i], 0xFF);
if((UART_FlagStatus(UART0) & UART_ParityError) ==UART_ParityError)uart_errors++;
my counter uart_errors is always 0. I try also to make this with uart0 interrupt:
Set_IRQ(UART0_IRQChannel,1);
extern u8 uart_errors;
void UART0_IRQHandler(void) __arm
{
if((UART_FlagStatus(UART0) & UART_ParityError) == UART_ParityError)uart_errors++;
}
but the result is the same.
I think someone have any advice
Thanks
