Posted on January 12, 2015 at 13:48Hi , i am unable to transfer and receive data from usart1 using interrupt. I used polling method to transfer and receive data from usart1 and it is working OK. ( Tx and Rx are Shorted)
I am using STVD and Cosmic compiler to run the codes. My problem is that , with the below codes when i used enableinterrupt(); function , control is stuck somewhere and it not return to main loop .
So can you please tell us where is the problem. Also i am not able to run any interrupts too.
Codes are
main()
{
disableInterrupts();
DeInitClock();
DeInitGPIO();
/* Select HSI as system clock source */
#ifdef USE_HSI
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);
#else
CLK_SYSCLKSourceSwitchCmd(ENABLE);
/* Select 2MHz HSE as system clock source */
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSE);
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_4);
CLK_HSICmd(DISABLE);
#endif
UART_PORT_PIN_HIGH();
USART_Cmd(USART1,ENABLE);
USART_DeInit(USART1);
CLK_PeripheralClockConfig(CLK_Peripheral_USART1, ENABLE);
USART_Init(USART1,BaudRate,USART_WordLength_8b,USART_StopBits_1,USART_Parity_No,USART_Mode_Tx|USART_Mode_Rx);
USART_ClockInit(USART1,USART_Clock_Enable,USART_CPOL_Low, USART_CPHA_1Edge,USART_LastBit_Disable);
USART_ReceiverWakeUpCmd(USART1,SET);
USART_ITConfig(USART1,USART_IT_RXNE|USART_IT_TXE,ENABLE);
enableInterrupts();
USART_Tx_Buffer(''t'');
}
and in Interrupt handler file codes is below to write 1 in he lcd if interrupt executes.
*/
INTERRUPT_HANDLER(USART1_RX_IRQHandler,28)
{
/* In order to detect unexpected events during development,
it is recommended to set a breakpoint on the following instruction.
*/
//while (1);
gotoxy_lcd(1,2);
LCD_WRITE(''1 '');
}
