int uart_release(void)
{
#ifndef __USE_UART_PORT3__
fprintf(stderr, "uart: __USE_UART_PORT3__ not defined\n");
return -1;
#elif defined(__USE_UART_PORT3_FOR_DEBUG__)
if(previous_uart_handler == uart_handler)
uart3_set_input(NULL);
else
uart3_set_input(previous_uart_handler);
/* If used for debug, do not turn off module */
return 0;
#endif
/* Disable interrupts */
IEC1CLR = _IEC1_U3EIE_MASK | _IEC2_U3TXIE_MASK | _IEC1_U3RXIE_MASK;
IFS1CLR = _IFS1_U3EIF_MASK | _IFS2_U3TXIF_MASK | _IFS1_U3RXIF_MASK;
/* Clear priority bits */
IPC9CLR = _IPC9_U3IP_MASK | _IPC9_U3IS_MASK;
U3MODE = 0;
U3STA = 0;
return 0;
}
/*---------------------------------------------------------------------------*/
static int
init(void)
{
uart3_init(0);
uart3_set_input(xbee_input_handler);
ringbuf_init(&rxbuf, rxbuf_data, sizeof(rxbuf_data));
process_start(&xbee_process, NULL);
return 0;
}
int uart_init(void)
{
#ifndef __USE_UART_PORT3__
fprintf(stderr, "uart: __USE_UART_PORT3__ not defined\n");
return -1;
#else
if(pic32_uart3_init(DEFAULT_BAUDRATE, 0))
{
fprintf(stderr, "uart: Init failed\n");
return -1;
}
current_baud_rate = DEFAULT_BAUDRATE;
ringbuf_init(&uart_ring_buffer, uart_buffer, UART_BUFFER_SIZE);
previous_uart_handler = uart3_input_handler;
uart3_set_input(uart_handler);
return 0;
#endif
}
