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134 lines
3.0 KiB
134 lines
3.0 KiB
#include "atcmd.h"
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/* AT指令表 */
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const AT_cmd_func at_cmd_func[] = {
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{AT_CMD_TEST, "AT", at_cmd_test},
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{AT_CMD_IP, "AT+IP=", at_cmd_ip},
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{AT_CMD_GW, "AT+GW", NULL},
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{AT_CMD_NETMASK, "AT+NETMASK=", NULL},
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{AT_CMD_NETMODULE, "AT+NETMODULE=", NULL},
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{AT_END, NULL, NULL}};
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unsigned int mstrlen(const char *s)
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{
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const char *ss = s;
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while (*ss)
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ss++;
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return ss - s;
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}
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int mstrncmp(const char *s1, const char *s2, int n)
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{
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const unsigned char *c1 = (const unsigned char *)s1;
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const unsigned char *c2 = (const unsigned char *)s2;
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unsigned char ch;
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int d = 0;
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while (n--)
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{
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d = (int)(ch = *c1++) - (int)*c2++;
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if (d || !ch)
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break;
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}
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return d;
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}
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/* 指令执行函数 */
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unsigned char at_cmd_test(unsigned char *p, unsigned char len)
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{
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printf("AT+OK\r\n");
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return 0;
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}
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unsigned char at_cmd_ip(unsigned char *p, unsigned char len)
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{
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if (*p == '?')
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{
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printf("AT+OK BLE-NAME\r\n");
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}
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else
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{
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printf("AT+OK\r\n");
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}
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return 0;
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}
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/* 查找指令表中对应的指令 */
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unsigned char AT_cmd_search(unsigned char *p, unsigned char len)
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{
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unsigned char ret = 0;
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// unsigned char *pstr;
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unsigned char i, n;
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for (i = 1; at_cmd_func[i].cmd != AT_END; i++)
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{
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n = mstrlen((const char *)at_cmd_func[i].str);
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if (!mstrncmp((const char *)p, (const char *)at_cmd_func[i].str, n))
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{
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ret = i;
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break;
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}
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}
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return ret;
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}
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/* AT指令解析 */
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unsigned char at_cmd_parse(unsigned char *p, unsigned char len)
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{
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unsigned char ret = AT_SUCCESS;
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unsigned char index = 0;
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if (len < 4)
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return AT_ERR; /* 不符合指令最小长度 */
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if ((p[0] == 'A') && (p[1] == 'T') && (p[len - 2] == 0x0D) && (p[len - 1] == 0x0A))
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{
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if (len == 4)
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{ /* 测试指令 */
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if (at_cmd_func[AT_CMD_TEST].cb != NULL)
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at_cmd_func[AT_CMD_TEST].cb(NULL, 0); /* 执行测试指令 */
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}
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else if (p[2] == '+')
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{ /* 执行指令解析 */
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index = AT_cmd_search(p, len); /* 查找匹配的执行指令，0-已匹配，!0-未匹配 */
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if (index)
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{
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if (at_cmd_func[index].cb != NULL)
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{ /* 判断指令对应执行函数是否存在 */
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unsigned char n;
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n = mstrlen((const char *)at_cmd_func[index].str);
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ret = at_cmd_func[index].cb(p + n, len - n); /* 执行对应的指令函数, p+n:将指令参数传输执行函数，len-n-2:指令参数有效长度 */
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}
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else
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ret = AT_ERR_FUN_UNUSED; /* 没有可执行函数 */
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}
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else
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{
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ret = AT_ERR_UNINVAIL; /* 未找到匹配的指令 */
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}
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}
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}
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else
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{ /* 格式不匹配 */
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return AT_ERR;
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}
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return ret;
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}
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