tlora-pager wake on button, and kb backlight toggling (#8090)

src/graphics/Screen.cpp

@@ -83,6 +83,11 @@ extern uint16_t TFT_MESH;
 #include "platform/portduino/PortduinoGlue.h"
 #endif
 
+#if defined(T_LORA_PAGER)
+// KB backlight control
+#include "input/cardKbI2cImpl.h"
+#endif
+
 using namespace meshtastic; /** @todo remove */
 
 namespace graphics
@@ -617,6 +622,19 @@ void Screen::setup()
     MeshModule::observeUIEvents(&uiFrameEventObserver);
 }
 
+void Screen::setOn(bool on, FrameCallback einkScreensaver)
+{
+#if defined(T_LORA_PAGER)
+    if (cardKbI2cImpl)
+        cardKbI2cImpl->toggleBacklight(on);
+#endif
+    if (!on)
+        // We handle off commands immediately, because they might be called because the CPU is shutting down
+        handleSetOn(false, einkScreensaver);
+    else
+        enqueueCmd(ScreenCmd{.cmd = Cmd::SET_ON});
+}
+
 void Screen::forceDisplay(bool forceUiUpdate)
 {
     // Nasty hack to force epaper updates for 'key' frames.  FIXME, cleanup.

src/graphics/Screen.h

@@ -259,15 +259,7 @@ class Screen : public concurrency::OSThread
     void setup();
 
     /// Turns the screen on/off. Optionally, pass a custom screensaver frame for E-Ink
-    void setOn(bool on, FrameCallback einkScreensaver = NULL)
-    {
-        if (!on)
-            // We handle off commands immediately, because they might be called because the CPU is shutting down
-            handleSetOn(false, einkScreensaver);
-        else
-            enqueueCmd(ScreenCmd{.cmd = Cmd::SET_ON});
-    }
-
+    void setOn(bool on, FrameCallback einkScreensaver = NULL);
     /**
      * Prepare the display for the unit going to the lowest power mode possible.  Most screens will just
      * poweroff, but eink screens will show a "I'm sleeping" graphic, possibly with a QR code

src/input/TCA8418KeyboardBase.cpp

@@ -200,6 +200,11 @@ uint8_t TCA8418KeyboardBase::flush()
     return count;
 }
 
+void TCA8418KeyboardBase::clearInt()
+{
+    writeRegister(TCA8418_REG_INT_STAT, 3);
+}
+
 uint8_t TCA8418KeyboardBase::digitalRead(uint8_t pinnum) const
 {
     if (pinnum > TCA8418_COL9)

src/input/TCA8418KeyboardBase.h

@@ -37,6 +37,8 @@ class TCA8418KeyboardBase
     virtual void begin(i2c_com_fptr_t r, i2c_com_fptr_t w, uint8_t addr = TCA8418_KB_ADDR);
 
     virtual void reset(void);
+    void clearInt(void);
+
     virtual void trigger(void);
 
     virtual void setBacklight(bool on);

src/input/TLoraPagerKeyboard.cpp

@@ -105,7 +105,14 @@ void TLoraPagerKeyboard::trigger()
 
 void TLoraPagerKeyboard::setBacklight(bool on)
 {
-    toggleBacklight(!on);
+    uint32_t _brightness = 0;
+    if (on)
+        _brightness = brightness;
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
+    ledcWrite(KB_BL_PIN, _brightness);
+#else
+    ledcWrite(LEDC_BACKLIGHT_CHANNEL, _brightness);
+#endif
 }
 
 void TLoraPagerKeyboard::pressed(uint8_t key)
@@ -192,7 +199,6 @@ void TLoraPagerKeyboard::hapticFeedback()
 // toggle brightness of the backlight in three steps
 void TLoraPagerKeyboard::toggleBacklight(bool off)
 {
-    static uint32_t brightness = 0;
     if (off) {
         brightness = 0;
     } else {
@@ -206,11 +212,7 @@ void TLoraPagerKeyboard::toggleBacklight(bool off)
     }
     LOG_DEBUG("Toggle backlight: %d", brightness);
 
-#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
-    ledcWrite(KB_BL_PIN, brightness);
-#else
-    ledcWrite(LEDC_BACKLIGHT_CHANNEL, brightness);
-#endif
+    setBacklight(true);
 }
 
 void TLoraPagerKeyboard::updateModifierFlag(uint8_t key)

src/input/TLoraPagerKeyboard.h

@@ -26,4 +26,5 @@ class TLoraPagerKeyboard : public TCA8418KeyboardBase
     uint32_t last_tap;
     uint8_t char_idx;
     int32_t tap_interval;
+    uint32_t brightness = 0;
 };

src/input/kbI2cBase.cpp

@@ -333,6 +333,7 @@ int32_t KbI2cBase::runOnce()
             }
             TCAKeyboard.trigger();
         }
+        TCAKeyboard.clearInt();
         break;
     }
     case 0x02: {
@@ -519,4 +520,11 @@ int32_t KbI2cBase::runOnce()
         LOG_WARN("Unknown kb_model 0x%02x", kb_model);
     }
     return 300;
-}
+}
+
+void KbI2cBase::toggleBacklight(bool on)
+{
+#if defined(T_LORA_PAGER)
+    TCAKeyboard.setBacklight(on);
+#endif
+}

src/input/kbI2cBase.h

@@ -12,6 +12,7 @@ class KbI2cBase : public Observable<const InputEvent *>, public concurrency::OST
 {
   public:
     explicit KbI2cBase(const char *name);
+    void toggleBacklight(bool on);
 
   protected:
     virtual int32_t runOnce() override;

src/main.cpp

@@ -367,6 +367,7 @@ void setup()
     digitalWrite(SDCARD_CS, HIGH);
     pinMode(TFT_CS, OUTPUT);
     digitalWrite(TFT_CS, HIGH);
+    pinMode(KB_INT, INPUT_PULLUP);
     // io expander
     io.begin(Wire, XL9555_SLAVE_ADDRESS0, SDA, SCL);
     io.pinMode(EXPANDS_DRV_EN, OUTPUT);

src/sleep.cpp

@@ -411,12 +411,16 @@ esp_sleep_wakeup_cause_t doLightSleep(uint64_t sleepMsec) // FIXME, use a more r
     // assert(uart_set_wakeup_threshold(UART_NUM_0, 3) == ESP_OK);
     // assert(esp_sleep_enable_uart_wakeup(0) == ESP_OK);
 #endif
-#ifdef BUTTON_PIN
+#ifdef ROTARY_PRESS
     // The enableLoraInterrupt() method is using ext0_wakeup, so we are forced to use GPIO wakeup
+    gpio_wakeup_enable((gpio_num_t)ROTARY_PRESS, GPIO_INTR_LOW_LEVEL);
+#endif
+#ifdef KB_INT
+    gpio_wakeup_enable((gpio_num_t)KB_INT, GPIO_INTR_LOW_LEVEL);
+#endif
+#ifdef BUTTON_PIN
     gpio_num_t pin = (gpio_num_t)(config.device.button_gpio ? config.device.button_gpio : BUTTON_PIN);
-
     gpio_wakeup_enable(pin, GPIO_INTR_LOW_LEVEL);
-    esp_sleep_enable_gpio_wakeup();
 #endif
 #ifdef INPUTDRIVER_ENCODER_BTN
     gpio_wakeup_enable((gpio_num_t)INPUTDRIVER_ENCODER_BTN, GPIO_INTR_LOW_LEVEL);
@@ -450,7 +454,12 @@ esp_sleep_wakeup_cause_t doLightSleep(uint64_t sleepMsec) // FIXME, use a more r
     // commented out because it's not that crucial;
     // if it sporadically happens the node will go into light sleep during the next round
     // assert(res == ESP_OK);
-
+#ifdef ROTARY_PRESS
+    gpio_wakeup_disable((gpio_num_t)ROTARY_PRESS);
+#endif
+#ifdef KB_INT
+    gpio_wakeup_disable((gpio_num_t)KB_INT);
+#endif
 #ifdef BUTTON_PIN
     // Disable wake-on-button interrupt. Re-attach normal button-interrupts
     gpio_wakeup_disable(pin);