【CuriosityNano测评报告】+串行通讯及应用

#define LED_turnOn() do { PORTF.OUTCLR = PIN5_bm; } while (0)

#define LED_turnOff() do { PORTF.OUTSET = PIN5_bm; } while (0)

#define LED_toggle() do { PORTF.OUTTGL = PIN5_bm; } while (0)



void USART0_init(void)

{

    //Init Callback

    rxHandler = 0;

    //Enable Run in Debug

    USART0.DBGCTRL = USART_DBGRUN_bm;

    //Enable RX Interrupts

    USART0.CTRLA = USART_RXCIE_bm;

    //Async Mode, No Parity, 1 Stop Bit, 8 bit TX

    USART0.CTRLC = USART_CMODE_ASYNCHRONOUS_gc | USART_PMODE_DISABLED_gc | USART_SBMODE_1BIT_gc | USART_CHSIZE_8BIT_gc;

    //Baud for 115,200 at 4 MHz Clock

    USART0.BAUD = 139;

    //Enable Normal Mode for USART

    USART0.CTRLB = USART_RXMODE_NORMAL_gc;

    //Note: Call enableTX/enableRX after this function

}



void USART0_initIO(void)

{

    //Default Value for output should be 1

    PORTD.OUTSET = PIN4_bm;

    //Clear PORTMUX

    PORTMUX.USARTROUTEA &= ~(PORTMUX_USART0_gm);

    //Select PD4/PD5

    PORTMUX.USARTROUTEA |= PORTMUX_USART0_ALT3_gc;

    //Set PD4 as Output

    PORTD.DIRSET = PIN4_bm;

    //Set PD5 as Input

    PORTD.DIRCLR = PIN5_bm;

}



int main(void) {

    int i,j,k;

    //Setup LED

    LED_init();

    LED_toggle ();

    //Setup USART

    USART0_initIO();

    USART0_init();

    //Enable TX and RX

    USART0_enableTX();

    USART0_enableRX();

    while (1)

    {

      for(j=0;j<1000;j++)

         for(i=0;i<1000;i++); 

      LED_toggle ();

      USART_sendString("Welcome to the LED Command Processor!\r\n");

    }

}

char cmd3[10] = {0X7E, 0xFF, 0x06, 0X03, 00, 00, 01, 0xFE, 0xF7, 0XEF};



while(1)

{

        for(i=0;i<10;i++)

        {

           USART0_sendByte(cmd3[i]);

           for(j=0;j<100;j++);

        }

        for(j=0;j<1000;j++)  for(i=0;i<1000;i++);

}