127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
#include "at_bluetooth.h"
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#define MEM_CACHE_LEN (64U)
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unsigned char bluetooth_state = 0;
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static unsigned char at_memcmp_cache[MEM_CACHE_LEN];
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static unsigned char at_cmd_test(unsigned char *p, unsigned char len);
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static unsigned char at_cmd_name(unsigned char *p, unsigned char len);
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#if BLE_TYPE == BLE_TYPE_HC42
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/* AT指令表 */
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const at_cmd_func_t at_cmd_func[] = {
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{AT_CMD_TEST, "AT", at_cmd_test},
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{AT_CMD_NAME_REQ, "AT+NAME", at_cmd_name},
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{AT_CMD_NAME, "AT+NAME=", at_cmd_name},
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{AT_END, NULL, NULL}};
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const char split_c = '=';
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#elif BLE_TYPE == BLE_TYPE_MX02
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/* AT指令表 */
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const at_cmd_func_t at_cmd_func[] = {
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{AT_CMD_TEST, "AT", at_cmd_test}, // 这个指令没用，为了和HC42统一
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{AT_GET_VER, "AT+VER", at_cmd_test},
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{AT_CMD_NAME_REQ, "AT+NAME", at_cmd_name},
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{AT_CMD_NAME, "AT+NAME=", at_cmd_name},
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{AT_END, NULL, NULL}};
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const char split_c = ':';
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#endif
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void at_set_memcmp_cache(unsigned char *p, unsigned char len)
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{
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osel_memset(at_memcmp_cache, 0, MEM_CACHE_LEN);
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osel_memcpy(at_memcmp_cache, p, len);
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}
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/* 指令执行函数 */
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static unsigned char at_cmd_test(unsigned char *p, unsigned char len)
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{
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BIT_SET(bluetooth_state, BIT0);
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return 0;
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}
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static unsigned char at_cmd_name(unsigned char *p, unsigned char len)
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{
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if (*p == split_c)
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{
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p++; // 偏移一个字节split_c
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if (osel_memcmp(p, at_memcmp_cache, osel_mstrlen(at_memcmp_cache)) == 0) // 去掉最后\r\n
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{
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BIT_SET(bluetooth_state, BIT1);
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}
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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 = osel_mstrlen((unsigned char *)at_cmd_func[i].str);
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if (!osel_memcmp(p, (unsigned 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 < 2)
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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'))
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{
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if (len == 2)
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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 = osel_mstrlen((unsigned 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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