LillyGo TDeck support

variants/lilygo_tdeck/TDeckBoard.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include <Wire.h>
+#include <Arduino.h>
+#include "helpers/ESP32Board.h"
+#include <driver/rtc_io.h>
+
+#define PIN_VBAT_READ 4
+#define BATTERY_SAMPLES 8
+#define ADC_MULTIPLIER (2.0f * 3.3f * 1000)
+
+class TDeckBoard : public ESP32Board {
+public:
+  void begin();
+
+  #ifdef P_LORA_TX_LED
+    void onBeforeTransmit() override{
+      digitalWrite(P_LORA_TX_LED, LOW); // turn TX LED on - invert pin for SX1276
+    }
+
+    void onAfterTransmit() override{
+      digitalWrite(P_LORA_TX_LED, HIGH); // turn TX LED off - invert pin for SX1276
+    }
+  #endif
+
+  void enterDeepSleep(uint32_t secs, int pin_wake_btn) {
+    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
+
+    // Make sure the DIO1 and NSS GPIOs are hold on required levels during deep sleep
+    rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
+    rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
+
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
+
+    if (pin_wake_btn < 0) {
+      esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH); // wake up on: recv LoRa packet
+    } else {
+      esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1) | (1L << pin_wake_btn), ESP_EXT1_WAKEUP_ANY_HIGH); // wake up on: recv LoRa packet OR wake btn
+    }
+
+    if (secs > 0) {
+      esp_sleep_enable_timer_wakeup(secs * 1000000);
+    }
+
+    // Finally set ESP32 into sleep
+    esp_deep_sleep_start(); // CPU halts here and never returns!
+  }
+
+  uint16_t getBattMilliVolts() {
+    #if defined(PIN_VBAT_READ) && defined(ADC_MULTIPLIER)
+      analogReadResolution(12);
+
+      uint32_t raw = 0;
+      for (int i = 0; i < BATTERY_SAMPLES; i++) {
+        raw += analogRead(PIN_VBAT_READ);
+      }
+
+      raw = raw / BATTERY_SAMPLES;
+      return (ADC_MULTIPLIER * raw) / 4096;
+    #else
+      return 0;
+    #endif
+  }
+
+  const char* getManufacturerName() const{
+    return "LilyGo T-Deck";
+  }
+};