Import of the watch repository from Pebble

src/fw/apps/demo_apps/idl_demo.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "idl_demo.h"
+
+#include "applib/app.h"
+#include "applib/ui/app_window_stack.h"
+#include "kernel/pbl_malloc.h"
+#include "process_state/app_state/app_state.h"
+#include "system/logging.h"
+#include "system/hexdump.h"
+
+#include "pb_decode.h"
+#include "pb_encode.h"
+#include "nanopb/simple.pb.h"
+#include "nanopb/measurements.pb.h"
+
+static void prv_init(void) {
+  SimpleMessage msg = {
+    .lucky_number = 42,
+  };
+  uint8_t *buffer = app_malloc(30);
+  pb_ostream_t s = pb_ostream_from_buffer(buffer, 30);
+  pb_encode(&s, SimpleMessage_fields, &msg);
+  PBL_LOG(LOG_LEVEL_DEBUG, "Encoded message, size: %u bytes", s.bytes_written);
+  PBL_HEXDUMP(LOG_LEVEL_DEBUG, buffer, s.bytes_written);
+  app_state_set_user_data(buffer);
+}
+
+static void prv_deinit(void) {
+  SimpleMessage msg = {0};
+  uint8_t *buffer = app_state_get_user_data();
+  pb_istream_t s = pb_istream_from_buffer(buffer, 30);
+  pb_decode(&s, SimpleMessage_fields, &msg);
+  PBL_LOG(LOG_LEVEL_DEBUG, "The lucky number is %"PRId32, msg.lucky_number);
+}
+
+static void prv_app_main(void) {
+  prv_init();
+  Window *window = window_create();
+  app_window_stack_push(window, false /*animated*/);
+  app_event_loop();
+  prv_deinit();
+}
+
+const PebbleProcessMd *idl_demo_get_app_info() {
+  static const PebbleProcessMdSystem s_app_data = {
+    .common = {
+      .main_func = prv_app_main,
+      // UUID: 101a32d95-1234-46d4-1234-854cc62f97f9
+      .uuid = {0x99, 0xa3, 0x2d, 0x95, 0x12, 0x34, 0x46, 0xd4,
+               0x12, 0x34, 0x85, 0x4c, 0xc6, 0x2f, 0x97, 0xf9},
+    },
+    .name = "IDL Demo",
+  };
+  return (const PebbleProcessMd *)&s_app_data;
+}