经常需要通过串口发送十六进制数据，但linux找不到适合的串口调试工具，自己写了个小工具进行串口调试。
#include "../lib/serial/serial.h" #include <stdlib.h> #include <stdio.h> #include <getopt.h> #include <string.h> int AscToHex(char hexstr[], char **out); char CheckSum(char *buf, int len); /* typedef struct _usartAttr { int speed; int bits; int event; int stop; int fd; int write_timeout; int read_timeout; int serialport; }UsartAttr; */ void showUsage() { puts("Options:" ); puts(" -p, --serialport=portnum The serial port to send." ); puts(" -c, --checksum If add checksum at the end." ); puts(" -B, --baud=speed The serial speed eg.115200 9600 4800" ); puts(" -v, --version Print the version number and exit." ); puts(" -h, --help Print this message and exit." ); puts(" --buf=senddate The buf which need to send eg. " "ff 01 00 25 " "" ); exit(0); } int lopt; static struct option longOpts[] = { { "serial-port", required_argument, NULL, 'p' }, { "checksum", no_argument, NULL, 'c' }, { "baud", required_argument, NULL, 'B' }, { "version", no_argument, NULL, 'v' }, { "help", no_argument, NULL, 'h' }, { "buf", required_argument, &lopt, 'b' }, { 0, 0, 0, 0 } }; int main(char argc, char *argv[]) { char flag_checksum = 0; char *sendbuf = NULL; int buflen = 0; UsartAttr SerialAttr = { 115200, 8, 'N', 1, 0, 500, 500, 1 }; while (1) { int optIndex = 0; char c = getopt_long(argc, argv, "p:b:cB:vh", longOpts, &optIndex); if ( c == '?' || c == -1) { showUsage(); } if (c == 0xff) { if (sendbuf == NULL) { showUsage(); } break; } switch (c) { case 0: { switch (lopt) { case 'b': { buflen = AscToHex(optarg, &sendbuf); if (buflen == -1) { printf("--buf error \n"); goto cleanup; } break; } } break; } case 'p': SerialAttr.serialport = *optarg - '0'; break; case 'c': flag_checksum = 1; break; case 'B': SerialAttr.speed = atoi(optarg); break; case 'v': printf("version: V1.0\n"); break; case 'h': showUsage(); break; default: break; } } UsartOpenAPI(&SerialAttr); UsartWriteAPI(&SerialAttr, sendbuf, buflen); if (flag_checksum == 1) { char sum = CheckSum(sendbuf + 1, buflen - 1); printf("Send check sum : "); UsartWriteAPI(&SerialAttr, &sum, 1); } UsartCloseAPI(&SerialAttr); cleanup: free(sendbuf); return 0; } char CheckSum(char *buf, int len) { char ret = 0; for (int i = 0; i < len; i++) { ret += buf[i]; } return ret; } char ChToNum(char ch) { char ret = 0; if (ch >= '0' && ch <= '9') { ret = ch - '0'; } else if (ch >= 'a' && ch <= 'f') { ret = ch - 'a' + 10; } else if (ch >= 'A' && ch <= 'F') { ret = ch - 'A' + 10; } return ret; } int AscToHex(char hexstr[], char **out) { int len = strlen(hexstr); int i = 0, j = 0, k = 0; k = len; while (k--) { if (!((hexstr[k] == ' ') || (hexstr[k] >= '0' && hexstr[k] <= '9' ) || (hexstr[k] >= 'a' && hexstr[k] <= 'f' ) || (hexstr[k] >= 'A' && hexstr[k] <= 'F' ))) { return -1; } } char *hexstr2 = (char *)malloc(len); while (i < len) { (hexstr[i] != ' ') ? (hexstr2[j++] = hexstr[i++]) : i++; } hexstr2[j--] = '\0'; *out = (char *)malloc(j / 2); for (i = 0; i < j; i += 2) { (*out)[i / 2] = ((ChToNum(hexstr2[i])) << 4) + (ChToNum(hexstr2[i + 1])); } free(hexstr2); return j / 2 + 1; }