/*
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/*
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* send.c -- serial line test program
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* send.c -- serial line test program
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <termios.h>
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#include <termios.h>
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#define NUM_TRIES 10
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#define NUM_TRIES 10
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#define SYN 0x16
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#define SYN 0x16
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#define ACK 0x06
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#define ACK 0x06
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static FILE *diskFile = NULL;
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static FILE *diskFile = NULL;
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static int sfd = 0;
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static int sfd = 0;
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static struct termios origOptions;
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static struct termios origOptions;
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static struct termios currOptions;
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static struct termios currOptions;
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void serialClose(void);
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void serialClose(void);
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void error(char *fmt, ...) {
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void error(char *fmt, ...) {
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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printf("Error: ");
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printf("Error: ");
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vprintf(fmt, ap);
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vprintf(fmt, ap);
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printf("\n");
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printf("\n");
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va_end(ap);
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va_end(ap);
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if (diskFile != NULL) {
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if (diskFile != NULL) {
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fclose(diskFile);
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fclose(diskFile);
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diskFile = NULL;
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diskFile = NULL;
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}
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}
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if (sfd != 0) {
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if (sfd != 0) {
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serialClose();
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serialClose();
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sfd = 0;
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sfd = 0;
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}
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}
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exit(1);
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exit(1);
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}
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}
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void serialOpen(char *serialPort) {
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void serialOpen(char *serialPort) {
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sfd = open(serialPort, O_RDWR | O_NOCTTY | O_NDELAY);
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sfd = open(serialPort, O_RDWR | O_NOCTTY | O_NDELAY);
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if (sfd == -1) {
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if (sfd == -1) {
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error("cannot open serial port '%s'", serialPort);
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error("cannot open serial port '%s'", serialPort);
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}
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}
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tcgetattr(sfd, &origOptions);
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tcgetattr(sfd, &origOptions);
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currOptions = origOptions;
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currOptions = origOptions;
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cfsetispeed(&currOptions, B38400);
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cfsetispeed(&currOptions, B38400);
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cfsetospeed(&currOptions, B38400);
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cfsetospeed(&currOptions, B38400);
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currOptions.c_cflag |= (CLOCAL | CREAD);
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currOptions.c_cflag |= (CLOCAL | CREAD);
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currOptions.c_cflag &= ~PARENB;
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currOptions.c_cflag &= ~PARENB;
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currOptions.c_cflag &= ~CSTOPB;
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currOptions.c_cflag &= ~CSTOPB;
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currOptions.c_cflag &= ~CSIZE;
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currOptions.c_cflag &= ~CSIZE;
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currOptions.c_cflag |= CS8;
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currOptions.c_cflag |= CS8;
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currOptions.c_cflag &= ~CRTSCTS;
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currOptions.c_cflag &= ~CRTSCTS;
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currOptions.c_lflag &= ~(ICANON | ECHO | ECHONL | ISIG | IEXTEN);
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currOptions.c_lflag &= ~(ICANON | ECHO | ECHONL | ISIG | IEXTEN);
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currOptions.c_iflag &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK);
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currOptions.c_iflag &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK);
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currOptions.c_iflag &= ~(INPCK | ISTRIP | INLCR | IGNCR | ICRNL);
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currOptions.c_iflag &= ~(INPCK | ISTRIP | INLCR | IGNCR | ICRNL);
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currOptions.c_iflag &= ~(IXON | IXOFF | IXANY);
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currOptions.c_iflag &= ~(IXON | IXOFF | IXANY);
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currOptions.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
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currOptions.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
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tcsetattr(sfd, TCSANOW, &currOptions);
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tcsetattr(sfd, TCSANOW, &currOptions);
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}
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}
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void serialClose(void) {
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void serialClose(void) {
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tcsetattr(sfd, TCSANOW, &origOptions);
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tcsetattr(sfd, TCSANOW, &origOptions);
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close(sfd);
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close(sfd);
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}
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}
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int serialSnd(unsigned char b) {
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int serialSnd(unsigned char b) {
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int n;
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int n;
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n = write(sfd, &b, 1);
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n = write(sfd, &b, 1);
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return n == 1;
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return n == 1;
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}
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}
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int serialRcv(unsigned char *bp) {
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int serialRcv(unsigned char *bp) {
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int n;
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int n;
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n = read(sfd, bp, 1);
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n = read(sfd, bp, 1);
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return n == 1;
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return n == 1;
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}
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}
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int main(int argc, char *argv[]) {
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int main(int argc, char *argv[]) {
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char *serialPort;
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char *serialPort;
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unsigned char curr;
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unsigned char curr;
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int count;
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int count;
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if (argc != 2) {
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if (argc != 2) {
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printf("Usage: %s <serial port>\n", argv[0]);
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printf("Usage: %s <serial port>\n", argv[0]);
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exit(1);
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exit(1);
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}
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}
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serialPort = argv[1];
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serialPort = argv[1];
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serialOpen(serialPort);
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serialOpen(serialPort);
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curr = 0;
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curr = 0;
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count = 0;
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count = 0;
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while (count < 100000) {
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while (count < 100000) {
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while (!serialSnd(curr)) ;
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while (!serialSnd(curr)) ;
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curr = (curr + 1) & 0xFF;
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curr = (curr + 1) & 0xFF;
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count++;
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count++;
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}
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}
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printf("count = %d\n", count);
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printf("count = %d\n", count);
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while (!serialRcv(&curr)) ;
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while (!serialRcv(&curr)) ;
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printf("answer = %c\n", curr);
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printf("answer = %c\n", curr);
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if (sfd != 0) {
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if (sfd != 0) {
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serialClose();
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serialClose();
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sfd = 0;
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sfd = 0;
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}
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}
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return 0;
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return 0;
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}
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}
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