Working version including remote access

src/main.c

@@ -64,7 +64,11 @@ static void timer_cb(void *arg) {
   esp_chip_info(&ci);
   tp_print(UART_NO, "t=%.1f C, h=%ld mH, tasks=%d\n", (float) (temp-32)/1.8 - tempOffset, hall, uxTaskGetNumberOfTasks());
 #elif CS_PLATFORM == CS_P_ESP8266
-  tp_print(UART_NO, "xyz\n");
+  tp_print(UART_NO,
+      "mem=%d kB, free=%d kB, fs=%d kB\n",
+      (int) mgos_get_heap_size()/1024,
+      (int) mgos_get_free_heap_size()/1024,
+      (int) mgos_get_fs_size()/1024);
 #endif
 
   (void) arg;
@@ -89,6 +93,33 @@ static void printSystemInfo() {
   #endif
 }
 
+// RPC Interfaces
+static void rpc_tpPrint(struct mg_rpc_request_info *ri, void *cb_arg,
+                        struct mg_rpc_frame_info *fi, struct mg_str args) {
+  struct mbuf fb;
+  struct json_out out = JSON_OUT_MBUF(&fb);
+  char *text = NULL;
+
+  mbuf_init(&fb, 100);
+
+  if (json_scanf(args.p, args.len, ri->args_fmt, &text) == 1) {
+    LOG(LL_INFO, ("TP print text: %s\n", text));
+    json_printf(&out, "{result: 0, resultString: %Q}", "OK");
+    tp_print_text(text);
+  } else {
+    json_printf(&out, "{error: %Q}", "text is required");
+  }
+
+  mg_rpc_send_responsef(ri, "%.*s", fb.len, fb.buf);
+  ri = NULL;
+  mbuf_free(&fb);
+  
+  (void) cb_arg;
+  (void) fi;
+  (void) args;
+}
+
+
 enum mgos_app_init_result mgos_app_init(void) {
   struct mgos_uart_config ucfg;
   mgos_uart_config_set_defaults(UART_NO, &ucfg);
@@ -105,11 +136,15 @@ enum mgos_app_init_result mgos_app_init(void) {
     return MGOS_APP_INIT_ERROR;
   }
 
+  mgos_uart_set_rx_enabled(UART_NO, false);
   printf("Initial printer operation");
   tp_init(UART_NO);
+
   mgos_set_timer(60000 /* ms */, true /* repeat */, timer_cb, NULL /* arg */);
 
-  mgos_uart_set_rx_enabled(UART_NO, false);
+  // Initialize RPC interfaces
+  struct mg_rpc *c = mgos_rpc_get_global();
+  mg_rpc_add_handler(c, "TP.Print", "{text: %Q}", rpc_tpPrint, NULL);
 
   tp_reset_mode(TP_MODE_ALL);
   tp_print(UART_NO, "TEST Print\r");