Отправляю на сервер бибу бобу и бабу, всё норм

clang_client/.vscode/launch.json

@@ -6,10 +6,9 @@
       "type": "cppdbg",
       "request": "launch",
       "program": "${workspaceFolder}/sim808_app",
-      "args": [],
       "cwd": "${workspaceFolder}",
       "MIMode": "gdb",
-      "stopAtEntry": false,
+      "stopAtEntry": true,
       "preLaunchTask": "build"
     }
   ]

clang_client/.vscode/tasks.json

@@ -7,7 +7,7 @@
       "command": "gcc",
       "args": [
         "-std=c99",
-        "-O2",
+        "-O0",
         "-g",
         "main.c",
         "Drivers/sim808.c",

clang_client/Drivers/sim808.c

@@ -276,13 +276,13 @@ void sim808_timeout_processing(void)  { /* на ПК не используетс
 
 static unsigned char self_ip_buf[64] = {0};
 
-static unsigned char cmd = 0;
 enum {
     CMD_NONE = 0,
     CMD_SIM808_OPEN_CONNECTION,
     CMD_SIM808_SEND_SMG,
     CMD_SIM808_CLOSE_CONNECTION,
 };
+static unsigned char cmd = 1;
 
 static sim800_stat_t conn_open = SIM808_ERR;
 static sim800_stat_t conn_clos = SIM808_ERR;
@@ -297,8 +297,8 @@ void sim808_demo_send(void)
             conn_open = SIM808_ERR;
             conn_open = sim808_open_connection(
                 "unused-apn",            /* игнорируется */
-                (char*)"212.193.61.100", /* или домен */
-                (char*)"5000",
+                (char*)"158.160.43.29", /* или домен */
+                (char*)"9090",
                 (char*)self_ip_buf       /* вернём локальный IP интерфейса */
             );
             break;

clang_client/main.c

@@ -6,10 +6,16 @@ int main(void)
 {
     sim808_init_ok = sim808_init();
 
-    while (1)
-    {
-        sim808_demo_send();
-    }
-
+    unsigned char self_ip_buf[64] = {0};
+    sim808_open_connection(
+                "unused-apn",            /* игнорируется */
+                (char*)"158.160.43.29", /* или домен */
+                (char*)"9090",
+                (char*)self_ip_buf       /* вернём локальный IP интерфейса */
+            );
+    sim808_send_msg("biba");
+    sim808_send_msg("boba");
+    sim808_send_msg("baba");
+    sim808_close_connection();
     return 0;
 }