UART2 Interrupt

[uthenb]

Posted on June 24, 2010 at 10:36

Hello i'm port uart2 polling receive data from hyperterminal it's ok. but i need use uart2 receive data with interrupt?

  TIM3_DeInit();     TIM3_TimeBaseInit(TIM3_PRESCALER_1,0xFFFF);    TIM3_ITConfig(TIM3_IT_UPDATE, ENABLE);     enableInterrupts();     GPIO_Init(GPIOD, 0x01 , GPIO_MODE_OUT_PP_LOW_FAST);             CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);     UART2_DeInit();     UART2_Init((u32)9600, UART2_WORDLENGTH_8D,    UART2_STOPBITS_1, UART2_PARITY_NO, UART2_SYNCMODE_CLOCK_DISABLE, UART2_MODE_TXRX_ENABLE);     UART2_ClearITPendingBit(UART2_IT_RXNE);     UART2_ITConfig(UART2_IT_IDLE, ENABLE); this code incorrect i don't know use function and see a register please help me

[saranyim]

Posted on March 14, 2011 at 09:43TIM3_DeInit();TIM3_TimeBaseInit(TIM3_PRESCALER_1,0xFFFF);TIM3_ITConfig(TIM3_IT_UPDATE, ENABLE);enableInterrupts();GPIO_Init(GPIOD, 0x01 , GPIO_MODE_OUT_PP_LOW_FAST);CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);UART2_DeInit();UART2_Init((u32)9600, UART2_WORDLENGTH_8D,    UART2_STOPBITS_1, UART2_PARITY_NO, UART2_SYNCMODE_CLOCK_DISABLE, UART2_MODE_TXRX_ENABLE);UART2_ClearITPendingBit(UART2_IT_RXNE);UART2_ITConfig(UART2_IT_IDLE, ENABLE);

UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);

[fabioaymoto9]

Posted on May 11, 2011 at 13:47

I´m in doubt if I need to use the UART2_ClearITPendingBit() function after read a byte from UART2 Interruption routine, or the own read action clears the pending bit RXNE. I couldn´t find this information from RM0016 reference manual.

The code I´m using:

#ifdef _COSMIC_

@far @interrupt void UART2_RX_IRQHandler(void)

#else /* _RAISONANCE_ */

void UART2_RX_IRQHandler(void) interrupt 21

#endif /* _COSMIC_ */

{

  // Read one byte from the receive data register

  RxBuffer[RxCounter++] = UART2_ReceiveData8();

UART2_ClearITPendingBit(UART2_IT_RXNE_OR); // Does this function is necessary?

  if(

RxCounter==128)   RxCounter=0;

  .

  .

  .

}

[fabioaymoto9]

Posted on May 11, 2011 at 17:45

I´ve already tested here,  that function is not necessary.