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61 lines
1.5 KiB
61 lines
1.5 KiB
/*
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* Created on: Aug 5, 2019
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* Author: Cristian Fatu
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* This project implements a basic UART communication over UART on
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* Petalinux, unsing Uart Lite linux driver. The hardware platform implements an
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* UART Lite IP core and the device tree (in pl.dtsi) sets the appropriate
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* parameters. After booting linux, the "/dev/ttyUL1" must be present.
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*/
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "uart.h"
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#define MAX_RECV_SIZE 235
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void openuart(struct UartDevice *device, char *devname, int rate) {
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device->name = devname;
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device->rate = rate;
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printf("UART open %s\n", device->name);
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int rc = uartStart(device, 0);
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if (rc) {
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printf("uartStart %s fail\n", device->name);
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exit(-1);
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}
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}
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int main(int argc, char *argv[]) {
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struct UartDevice dev = {0};
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// struct UartDevice dev2 = {0};
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if (argc != 2) {
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printf("Usage:%s dev1\n", argv[0]);
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// printf("Demo:%s /dev/ttyUSB0 /dev/ttyUSB1\n", argv[0]);
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exit(-1);
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}
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openuart(&dev, argv[1], B9600);
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// openuart(&dev2, argv[2], B9600);
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char buf[1024] = {0x55};
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memset(buf, 0x55, 1024);
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for (size_t i = 0;; i++) {
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int ret1, ret2;
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ret1 = uartSend(&dev, buf, 1); // send the received text over UART
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// ret2 = uartSend(&dev2, buf, 1); // send the received text over UART
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printf("send %d %d characters %d\n", ret1, ret2, i);
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usleep(1*1000);
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}
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while (1) {
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sleep(1);
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}
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return 0;
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}
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