Example #1
0
void usart1_isr(void)
{
    unsigned char c;

	/* Check if we were called because of RXNE. */
	if (((USART_CR1(USART1) & USART_CR1_RXNEIE) != 0) &&
        ((USART_SR(USART1) & USART_SR_RXNE) != 0) &&
        (!serial_rb_full(&srx))) {
        c = serial_recv();
        serial_rb_write(&srx, c);
	}
	/* Check if we were called because of TXE. */
	else if (((USART_CR1(USART1) & USART_CR1_TXEIE) != 0) &&
             ((USART_SR(USART1) & USART_SR_TXE) != 0)) {

        if(!serial_rb_empty(&stx)) {
            serial_send(serial_rb_read(&stx));
        }
        else {
            /* Disable the TXE interrupt, it's no longer needed. */
            USART_CR1(USART1) &= ~USART_CR1_TXEIE;
        }
	}
	else {
        c = serial_recv();
	}
}
void packet_byte_to_sendq(unsigned char pkt_byte) 
{
	// wait until buffer empties 
	while(serial_rb_full(&stx)) {
		__asm__("nop");
	}

	serial_rb_write(&stx, pkt_byte);
	IE2 |= UCA0TXIE;
}
Example #3
0
int main(void)
{
	int i;

	clock_init();
	gpio_init();
	serial_init(9600);
	serirq_init();
	nrf_init();
	nrf_configure_sb();

	prx.size 	= PL_SIZE;
	ptx.size 	= PL_SIZE;

	while (1) {
        ptx.data[0] = 0;

        while(!serial_rb_empty(&srx) && ptx.data[0] < (PL_SIZE - 1)) {
			ptx.data[ptx.data[0] + 1] = serial_rb_read(&srx);
			ptx.data[0]++;
        }

        if(ptx.data[0] > 0) {
#ifdef MSP430
			P1OUT |= RXTX_LED;
#else
            gpio_set(GPIOC, TX_LED);
#endif
            // switch to PTX for sending out data ...
            nrf_set_mode_ptx();

            nrf_send_blocking(&ptx);

            nrf_set_mode_prx();
        }

        if(nrf_receive(&prx) != 0 && prx.data[0] > 0) {
            if(!serial_rb_full(&stx)) {
                for(i = 0; i < prx.data[0]; i++) serial_rb_write(&stx, prx.data[i + 1]);
#ifdef MSP430
				P1OUT |= RXTX_LED;
				IE2 |= UCA0TXIE;
#else
             	gpio_set(GPIOC, RX_LED);
               	USART_CR1(USART1) |= USART_CR1_TXEIE;
#endif
            }
    	}
	}

	return 0;
}
Example #4
0
void client_server_tx_stx(unsigned char *data, int size)
{
	int i;

   	for(i = 0; i < size; i++) {
   		if(serial_rb_full(&stx)) {
        	break;
        }
        serial_rb_write(&stx, data[i]);
    }

	if(i > 0) {
		IE2 |= UCA0TXIE;
	}
}
void client_server_tx_stx(unsigned char *data, int size)
{
	int i;

   	for(i = 0; i < size; i++) {
   		if(serial_rb_full(&stx)) {
        	break;
        }
        serial_rb_write(&stx, data[i]);
    }

	if(i > 0) {
    	USART_CR1(USART1) |= USART_CR1_TXEIE;
	}
}
Example #6
0
interrupt(USCIAB0RX_VECTOR) USCI0RX_ISR(void)
{
	if (!serial_rb_full(&srx)) {
        serial_rb_write(&srx, UCA0RXBUF);
	}
}