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https://gitee.com/moluo-tech/AT-Command
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增加接收锁,解决执行at_do_work时urc部分数据丢失问题
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魔罗技术
parent
76d13e373b
commit
321be4256f
88
at.c
88
at.c
@ -15,6 +15,7 @@
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* 2021-03-21 Morro 删除at_obj中的at_work_ctx_t域,减少内存使用
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* 2021-04-08 Morro 解决重复释放信号量导致命令出现等待超时的问题
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* 2021-05-15 Morro 优化URC匹配程序
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* 2021-07-20 Morro 增加锁,解决执行at_do_work时urc部分数据丢失问题
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******************************************************************************
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*/
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#include "at.h"
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@ -24,6 +25,10 @@
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#include <stdio.h>
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#include <stddef.h>
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#define MAX_AT_LOCK_TIME 60 * 1000 //AT命令锁定时间
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static void urc_recv_process(at_obj_t *at, const char *buf, unsigned int size);
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/**
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* @brief 默认调试接口
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*/
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@ -39,7 +44,6 @@ static void put_string(at_obj_t *at, const char *s)
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at->adap.write(s++, 1);
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}
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/**
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* @brief 输出字符串(带换行)
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*/
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@ -50,8 +54,28 @@ static void put_line(at_obj_t *at, const char *s)
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at->adap.debug("->\r\n%s\r\n", s);
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}
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/**
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* @brief 作业读操作
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*/
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static unsigned int at_work_read(struct at_work_ctx *e, void *buf, unsigned int len)
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{
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at_obj_t *at = e->at;
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len = at->adap.read(buf, len);
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urc_recv_process(at, buf, len); //递交到URC进行处理
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return len;
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}
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/**
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* @brief 作业写操作
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*/
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static unsigned int at_work_write(struct at_work_ctx *e, const void *buf, unsigned int len)
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{
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return e->at->adap.write(buf, len);
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}
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//打印输出
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static void at_print(struct at_work_ctx *e, const char *cmd, ...)
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static void at_work_print(struct at_work_ctx *e, const char *cmd, ...)
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{
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va_list args;
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va_start(args, cmd);
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@ -61,14 +85,6 @@ static void at_print(struct at_work_ctx *e, const char *cmd, ...)
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va_end(args);
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}
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/**
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* @brief 清除数据缓冲区
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*/
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static void recvbuf_clr(struct at_work_ctx *e)
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{
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e->at->rcv_cnt = 0;
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}
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//等待AT命令响应
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static at_return wait_resp(at_obj_t *at, at_respond_t *r)
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{
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@ -87,8 +103,7 @@ static at_return wait_resp(at_obj_t *at, at_respond_t *r)
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* @param[in] resp - 期待待接收串(如"OK",">")
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* @param[in] timeout - 等待超时时间
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*/
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at_return wait_recv(struct at_work_ctx *e, const char *resp,
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unsigned int timeout)
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at_return wait_recv(struct at_work_ctx *e, const char *resp, unsigned int timeout)
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{
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char buf[64];
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int cnt = 0, len;
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@ -96,7 +111,8 @@ at_return wait_recv(struct at_work_ctx *e, const char *resp,
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at_return ret = AT_RET_TIMEOUT;
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unsigned int timer = at_get_ms();
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while (at_get_ms() - timer < timeout) {
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len = at->adap.read(buf, sizeof(buf) - cnt);
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len = e->read(e, &buf[cnt], sizeof(buf) - cnt);
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if (len > 0) {
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cnt += len;
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buf[cnt] = '\0';
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if (strstr(buf, resp)) {
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@ -106,7 +122,8 @@ at_return wait_recv(struct at_work_ctx *e, const char *resp,
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ret = AT_RET_ERROR;
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break;
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}
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at_delay(10);
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} else
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at_delay(1);
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}
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at->adap.debug("%s\r\n", buf);
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return ret;
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@ -120,9 +137,9 @@ void at_obj_init(at_obj_t *at, const at_adapter_t *adap)
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{
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at->adap = *adap;
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at->rcv_cnt = 0;
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at->cmd_lock = ril_sem_new(1);
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at->completed = ril_sem_new(0);
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at->send_lock = at_sem_new(1);
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at->recv_lock = at_sem_new(1);
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at->completed = at_sem_new(0);
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at->urc_item = NULL;
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if (at->adap.debug == NULL)
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at->adap.debug = nop_dbg;
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@ -143,7 +160,7 @@ at_return at_do_cmd(at_obj_t *at, at_respond_t *r, const char *cmd)
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if (r == NULL) {
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r = &default_resp; //默认响应
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}
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if (!at_sem_wait(at->cmd_lock, r->timeout)) {
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if (!at_sem_wait(at->send_lock, r->timeout)) {
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return AT_RET_TIMEOUT;
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}
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at->busy = true;
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@ -153,7 +170,7 @@ at_return at_do_cmd(at_obj_t *at, at_respond_t *r, const char *cmd)
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}
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put_line(at, cmd);
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ret = wait_resp(at, r);
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at_sem_post(at->cmd_lock);
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at_sem_post(at->send_lock);
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at->busy = false;
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return ret;
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}
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@ -169,26 +186,25 @@ int at_do_work(at_obj_t *at, at_work work, void *params)
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{
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at_work_ctx_t ctx;
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int ret;
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if (!at_sem_wait(at->cmd_lock, 150 * 1000)) {
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if (!at_sem_wait(at->send_lock, MAX_AT_LOCK_TIME)) {
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return AT_RET_TIMEOUT;
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}
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if (!at_sem_wait(at->recv_lock, MAX_AT_LOCK_TIME))
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return AT_RET_TIMEOUT;
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at->busy = true;
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while (at->urc_cnt) { //等待URC处理完成
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at_delay(1);
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}
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//构造at_work_ctx_t
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ctx.params = params;
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ctx.printf = at_print;
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ctx.recvclr = recvbuf_clr;
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ctx.read = at->adap.read;
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ctx.write = at->adap.write;
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ctx.printf = at_work_print;
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ctx.read = at_work_read;
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ctx.write = at_work_write;
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ctx.wait_resp = wait_recv;
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ctx.at = at;
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at->dowork = true;
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at->rcv_cnt = 0;
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ret = work(&ctx);
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at->dowork = false;
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at_sem_post(at->cmd_lock);
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at_sem_post(at->recv_lock);
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at_sem_post(at->send_lock);
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at->busy = false;
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return ret;
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}
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@ -381,13 +397,15 @@ void at_resume(at_obj_t *at)
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*/
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void at_process(at_obj_t *at)
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{
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char c;
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char buf[16];
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unsigned int len;
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if (at->dowork) /* 自定义命令处理 */
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if (!at_sem_wait(at->recv_lock, MAX_AT_LOCK_TIME))
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return;
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do {
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len = at->adap.read(&c, 1);
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urc_recv_process(at, &c,len);
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resp_recv_process(at, &c, len);
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len = at->adap.read(buf, sizeof(buf));
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urc_recv_process(at, buf,len);
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resp_recv_process(at, buf, len);
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} while (len);
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at_sem_post(at->recv_lock);
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}
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60
at.h
60
at.h
@ -14,6 +14,7 @@
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* 2021-03-21 Morro 删除at_obj中的at_work_ctx_t域,减少内存使用
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* 2021-04-08 Morro 解决重复释放信号量导致命令出现等待超时的问题
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* 2021-05-15 Morro 优化URC匹配程序
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* 2021-07-20 Morro 增加接收锁,解决执行at_do_work时urc部分数据丢失问题
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******************************************************************************/
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#ifndef _AT_H_
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@ -74,25 +75,46 @@ typedef struct {
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void (*handler)(at_urc_ctx_t *ctx);
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}urc_item_t;
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/**AT接口适配器 --------------------------------------------------------------*/
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/**
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* @brief AT接口适配器(用于初始化AT控制器)
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*/
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typedef struct {
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//数据写操作
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/**
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* @brief 数据写接口
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*/
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unsigned int (*write)(const void *buf, unsigned int len);
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//数据读操作
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/**
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* @brief 数据读接口
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*/
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unsigned int (*read)(void *buf, unsigned int len);
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//调试打印输出,如果不需要则填NULL
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/**
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* @brief 调试打印输出接口,如果不需要则填NULL
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*/
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void (*debug)(const char *fmt, ...);
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//utc 处理函数表,如果不需要则填NULL
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/**
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* @brief urc 处理函数表,如果不需要则填NULL
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*/
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urc_item_t *utc_tbl;
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//urc接收缓冲区,如果不需要则填NULL
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/**
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* @brief urc接收缓冲区,如果不需要则填NULL
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*/
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char *urc_buf;
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//urc表项个数,如果不需要则填0
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/**
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* @brief utc_tbl项个数,如果不需要则填0
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*/
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unsigned short urc_tbl_count;
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//urc缓冲区大小,如果不需要则填0
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/**
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* @brief urc缓冲区大小,如果不需要则填0
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*/
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unsigned short urc_bufsize;
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}at_adapter_t;
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/*AT响应参数 -----------------------------------------------------------------*/
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/**
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* @brief AT命令响应参数
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*/
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typedef struct {
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const char *matcher; /* 接收匹配串 */
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char *recvbuf; /* 接收缓冲区 */
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@ -106,12 +128,17 @@ typedef struct {
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*/
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typedef struct at_work_ctx {
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struct at_obj *at;
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//作业参数,由at_do_work接口传入
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void *params;
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unsigned int (*write)(const void *buf, unsigned int len);
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unsigned int (*read)(void *buf, unsigned int len);
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/**
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* @brief 数据写操作
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*/
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unsigned int (*write)(struct at_work_ctx *self, const void *buf, unsigned int len);
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/**
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* @brief 数据读操作
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*/
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unsigned int (*read)(struct at_work_ctx *self, void *buf, unsigned int len);
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/**
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* @brief 格式化打印输出
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@ -124,14 +151,14 @@ typedef struct at_work_ctx {
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*/
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at_return (*wait_resp)(struct at_work_ctx *self, const char *prefix,
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unsigned int timeout);
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//清除接收缓存
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void (*recvclr)(struct at_work_ctx *self);
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}at_work_ctx_t;
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/*AT对象 ---------------------------------------------------------------------*/
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typedef struct at_obj {
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at_adapter_t adap; /* 接口适配器*/
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at_sem_t cmd_lock; /* 命令锁*/
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at_sem_t send_lock; /* 发送锁*/
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at_sem_t recv_lock; /* 接收锁*/
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at_sem_t completed; /* 命令完成信号*/
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at_respond_t *resp; /* AT应答信息*/
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const urc_item_t *urc_item; /* 当前URC项*/
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@ -160,6 +187,7 @@ int at_split_respond_lines(char *recvbuf, char *lines[], int count, char separat
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int at_do_work(at_obj_t *at, at_work work, void *params); /* 自定义AT作业*/
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void at_process(at_obj_t *at); /* AT接收处理*/
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#endif
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