1st version with c implementation of state engine

bak/init-bak.js

@@ -0,0 +1,57 @@
+load('api_config.js');
+load('api_gpio.js');
+load('api_mqtt.js');
+load('api_net.js');
+load('api_sys.js');
+load('api_rpc.js');
+load('api_timer.js');
+/* load("animateLights.js"); */
+load('api_ledlights.js');
+
+let led = Cfg.get('pins.led');
+
+// Helper C function get_led_gpio_pin() in src/main.c returns built-in LED GPIO
+// let onBoardLed = ffi('int get_led_gpio_pin()')();
+
+let button = Cfg.get('pins.button');
+let topic = '/devices/' + Cfg.get('device.id') + '/events';
+
+print('LED GPIO:', led, 'button GPIO:', button);
+
+let getInfo = function() {
+  return JSON.stringify({
+    total_ram: Sys.total_ram(),
+    free_ram: Sys.free_ram()
+  });
+};
+
+// Blink built-in LED every second
+GPIO.set_mode(led, GPIO.MODE_OUTPUT);
+Timer.set(5000 /* 1 sec */, true /* repeat */, function() {
+  let value = GPIO.toggle(led);
+  print(value ? 'Tick' : 'Tock', 'uptime:', Sys.uptime(), getInfo());
+}, null);
+
+// Publish to MQTT topic on a button press. Button is wired to GPIO pin 0
+/*
+GPIO.set_button_handler(button, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
+  let message = getInfo();
+  let ok = MQTT.pub(topic, message, 1);
+  print('Published:', ok, topic, '->', message);
+}, null);
+*/
+
+// Monitor network connectivity.
+Net.setStatusEventHandler(function(ev, arg) {
+  let evs = '???';
+  if (ev === Net.STATUS_DISCONNECTED) {
+    evs = 'DISCONNECTED';
+  } else if (ev === Net.STATUS_CONNECTING) {
+    evs = 'CONNECTING';
+  } else if (ev === Net.STATUS_CONNECTED) {
+    evs = 'CONNECTED';
+  } else if (ev === Net.STATUS_GOT_IP) {
+    evs = 'GOT_IP';
+  }
+  print('== Net event:', ev, evs);
+}, null);