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main.c
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main.c
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/*
* The MIT License (MIT)
*
* Copyright (c) 2017-2018, Erik Moqvist
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* This file is part of the Simba project.
*/
#include "simba.h"
static struct gnss_driver_t gnss;
static struct uart_driver_t uart;
static uint8_t uart_rxbuf[128];
int main()
{
int res;
struct time_t timeout;
sys_start();
/* Initialization of the UART (device index 1) and GNSS
drivers. */
gnss_module_init();
uart_init(&uart,
&uart_device[1],
9600,
&uart_rxbuf[0],
sizeof(uart_rxbuf));
chan_control(&uart, CHAN_CONTROL_NON_BLOCKING_READ);
uart_start(&uart);
gnss_init(&gnss, &uart, &uart);
timeout.seconds = 1;
timeout.nanoseconds = 0;
std_printf(OSTR("Waiting for GNSS data...\r\n"));
while (1) {
/* Read and decode GNSS sentences. */
if (chan_poll(&uart, &timeout) != NULL) {
res = gnss_read(&gnss);
/* -EAGAIN is returned if a sentence was only partly
received. The sentence is finalized in subsequent
calls to gnss_read(). */
if (res == -EAGAIN) {
continue;
}
/* Print errors that occurs. */
if (res != 0) {
std_printf(OSTR("gnss_read() failed with %d: %S.\r\n\r\n"),
res,
errno_as_string(res));
}
}
/* Print current position, date, altitude, etc. */
gnss_print(&gnss, sys_get_stdout());
std_printf(OSTR("\r\n"));
}
return (0);
}