170bdd104f
Large change that removes the duplicated MIT notice withe a spdx tag Signed-off-by: Thomas Ingleby <thomas.ingleby@intel.com>
99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
/*
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* Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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* Copyright (c) 2018, Linaro Ltd.
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*
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* SPDX-License-Identifier: MIT
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*
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* Example usage: Prints "Hello Mraa!" recursively. Press Ctrl+C to exit
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*
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*/
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/* standard headers */
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* mraa header */
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#include "mraa/uart.h"
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#ifndef FALSE
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#define FALSE 0
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#define TRUE (!FALSE)
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#endif
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/* UART port name */
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const char* dev_path = "/dev/ttyS0";
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volatile sig_atomic_t flag = 1;
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void
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sig_handler(int signum)
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{
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if (signum == SIGINT) {
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fprintf(stdout, "Exiting...\n");
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flag = 0;
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}
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}
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int
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main(int argc, char** argv)
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{
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mraa_result_t status = MRAA_SUCCESS;
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mraa_uart_context uart;
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char buffer[] = "Hello Mraa!";
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int baudrate = 9600, stopbits = 1, databits = 8;
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mraa_uart_parity_t parity = MRAA_UART_PARITY_NONE;
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unsigned int ctsrts = FALSE, xonxoff = FALSE;
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const char* name = NULL;
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/* install signal handler */
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signal(SIGINT, sig_handler);
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/* initialize mraa for the platform (not needed most of the time) */
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mraa_init();
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//! [Interesting]
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/* initialize uart */
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uart = mraa_uart_init_raw(dev_path);
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if (uart == NULL) {
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fprintf(stderr, "Failed to initialize UART\n");
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return EXIT_FAILURE;
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}
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/* set serial port parameters */
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status =
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mraa_uart_settings(-1, &dev_path, &name, &baudrate, &databits, &stopbits, &parity, &ctsrts, &xonxoff);
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if (status != MRAA_SUCCESS) {
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goto err_exit;
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}
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while (flag) {
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/* send data through uart */
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mraa_uart_write(uart, buffer, sizeof(buffer));
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sleep(1);
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}
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/* stop uart */
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mraa_uart_stop(uart);
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//! [Interesting]
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/* deinitialize mraa for the platform (not needed most of the time) */
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mraa_deinit();
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return EXIT_SUCCESS;
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err_exit:
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mraa_result_print(status);
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/* stop uart */
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mraa_uart_stop(uart);
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/* deinitialize mraa for the platform (not needed most of the times) */
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mraa_deinit();
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return EXIT_FAILURE;
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}
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