RAK / NRF shutdown functionality on user button long press (#1113)

src/commands.h

@@ -13,4 +13,5 @@ enum class Cmd {
         STOP_BLUETOOTH_PIN_SCREEN,
         STOP_BOOT_SCREEN,
         PRINT,
+        START_SHUTDOWN_SCREEN,
 };

src/graphics/Screen.cpp

@@ -219,6 +219,14 @@ static void drawFrameBluetooth(OLEDDisplay *display, OLEDDisplayUiState *state,
     display->drawString(64 + x, 48 + y, buf);
 }
 
+static void drawFrameShutdown(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
+{
+    display->setTextAlignment(TEXT_ALIGN_CENTER);
+
+    display->setFont(FONT_MEDIUM);
+    display->drawString(64 + x, 26 + y, "Shutting down...");
+}
+
 static void drawFrameFirmware(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
 {
     display->setTextAlignment(TEXT_ALIGN_CENTER);
@@ -881,6 +889,9 @@ int32_t Screen::runOnce()
             handlePrint(cmd.print_text);
             free(cmd.print_text);
             break;
+        case Cmd::START_SHUTDOWN_SCREEN:
+            handleShutdownScreen();
+            break;
         default:
             DEBUG_MSG("BUG: invalid cmd\n");
         }
@@ -1047,6 +1058,18 @@ void Screen::handleStartBluetoothPinScreen(uint32_t pin)
     setFastFramerate();
 }
 
+void Screen::handleShutdownScreen()
+{
+    DEBUG_MSG("showing shutdown screen\n");
+    showingNormalScreen = false;
+
+    static FrameCallback shutdownFrames[] = {drawFrameShutdown};
+
+    ui.disableAllIndicators();
+    ui.setFrames(shutdownFrames, 1);
+    setFastFramerate();
+}
+
 void Screen::handleStartFirmwareUpdateScreen()
 {
     DEBUG_MSG("showing firmware screen\n");

src/graphics/Screen.h

@@ -151,6 +151,12 @@ class Screen : public concurrency::OSThread
         enqueueCmd(cmd);
     }
 
+    void startShutdownScreen()
+    {
+        ScreenCmd cmd;
+        cmd.cmd = Cmd::START_SHUTDOWN_SCREEN;
+        enqueueCmd(cmd);
+    }
 
     /// Stops showing the bluetooth PIN screen.
     void stopBluetoothPinScreen() { enqueueCmd(ScreenCmd{.cmd = Cmd::STOP_BLUETOOTH_PIN_SCREEN}); }
@@ -262,7 +268,7 @@ class Screen : public concurrency::OSThread
     void handleStartBluetoothPinScreen(uint32_t pin);
     void handlePrint(const char *text);
     void handleStartFirmwareUpdateScreen();
-
+    void handleShutdownScreen();
     /// Rebuilds our list of frames (screens) to default ones.
     void setFrames();
 

src/main.cpp

@@ -300,8 +300,9 @@ class ButtonThread : public OSThread
     static void userButtonPressedLong()
     {
         // DEBUG_MSG("Long press!\n");
+#ifndef NRF52_SERIES
         screen->adjustBrightness();
-
+#endif
         // If user button is held down for 5 seconds, shutdown the device.
         if (millis() - longPressTime > 5 * 1000) {
 #ifdef TBEAM_V10
@@ -313,6 +314,7 @@ class ButtonThread : public OSThread
             // Do actual shutdown when button released, otherwise the button release
             // may wake the board immediatedly.
             if (!shutdown_on_long_stop) {
+                screen->startShutdownScreen();
                 DEBUG_MSG("Shutdown from long press");
                 playBeep();
                 ledOff(PIN_LED1);
@@ -354,6 +356,7 @@ class ButtonThread : public OSThread
         longPressTime = 0;
         if (shutdown_on_long_stop) {
             playShutdownMelody();
+            delay(3000);
             power->shutdown();
         }
     }