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Hello,
I need to read the uart data on interrupt bases ,means whenever there is something on rx pin of uart interrupt should get generated and in ISR should read it. I have tried by using bellow code but didn't get any success ... char data; volatile int edge_capture; void uart_isr() { int status = 0; status = IORD_ALTERA_AVALON_UART_STATUS(UART_0_BASE); if(status & 0x80) data = IORD_ALTERA_AVALON_UART_RXDATA(UART_0_BASE); interrupt_count = interrupt_count +1; } void uart() { void* edge_capture_ptr = (void*) &edge_capture; alt_ic_isr_register(UART_0_IRQ_INTERRUPT_CONTROLLER_ID, UART_0_IRQ, uartR, edge_capture_ptr, 0x0); alt_ic_irq_enable(UART_0_IRQ_INTERRUPT_CONTROLLER_ID,UART_0_IRQ); IOWR_ALTERA_AVALON_UART_CONTROL(UART_0_BASE,ALTERA_AVALON_UART_CONTROL_RRDY_MSK); } sometime ISR just gets called once and sometime it will be keep getting even if there is nothing on uart RX bus.. M i doing something wrong here ..plz suggest me. If anyone has example code for uart interrupt receive plz share . Thanks and Regards Ankur- Tags:
- Nios® II Processor
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