Board Support: Heltec v3 (#407)

Boards/heltec-wifi-lora-32-v3/Source/devices/Constants.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <driver/gpio.h>
+#include <driver/i2c.h>
+#include <driver/spi_common.h>
+
+// Display
+constexpr auto DISPLAY_I2C_ADDRESS = 0x3C;
+constexpr auto DISPLAY_I2C_SPEED = 200000;
+constexpr auto DISPLAY_I2C_PORT = I2C_NUM_0;
+constexpr auto DISPLAY_PIN_SDA = GPIO_NUM_17;
+constexpr auto DISPLAY_PIN_SCL = GPIO_NUM_18;
+constexpr auto DISPLAY_PIN_RST = GPIO_NUM_21;
+constexpr auto DISPLAY_HORIZONTAL_RESOLUTION = 128;
+constexpr auto DISPLAY_VERTICAL_RESOLUTION = 64;
+constexpr auto DISPLAY_PIN_POWER = GPIO_NUM_36;

Boards/heltec-wifi-lora-32-v3/Source/devices/Display.cpp

@@ -0,0 +1,19 @@
+#include "Display.h"
+#include "Constants.h"
+
+#include <Ssd1306Display.h>
+
+std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
+    auto configuration = std::make_unique<Ssd1306Display::Configuration>(
+        DISPLAY_I2C_PORT,
+        DISPLAY_I2C_ADDRESS,
+        DISPLAY_PIN_RST,
+        DISPLAY_HORIZONTAL_RESOLUTION,
+        DISPLAY_VERTICAL_RESOLUTION,
+        nullptr, // no touch
+        false // invert
+    );
+
+    auto display = std::make_shared<Ssd1306Display>(std::move(configuration));
+    return std::static_pointer_cast<tt::hal::display::DisplayDevice>(display);
+}

Boards/heltec-wifi-lora-32-v3/Source/devices/Display.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <Tactility/hal/display/DisplayDevice.h>
+
+std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay();

Boards/heltec-wifi-lora-32-v3/Source/devices/Power.cpp

@@ -0,0 +1,20 @@
+#include "Power.h"
+
+#include <ChargeFromAdcVoltage.h>
+#include <EstimatedPower.h>
+#include <Tactility/hal/gpio/Gpio.h>
+#include <memory>
+
+// ADC enable pin on GPIO37
+constexpr auto ADC_CTRL = 37;
+
+std::shared_ptr<tt::hal::power::PowerDevice> createPower() {
+    ChargeFromAdcVoltage::Configuration configuration;
+    // 2.0 ratio, but +0.11 added as display voltage sag compensation.
+    configuration.adcMultiplier = 2.11;
+
+    // Configure the ADC enable pin as an output
+    tt::hal::gpio::configure(ADC_CTRL, tt::hal::gpio::Mode::Output, false, false);
+
+    return std::make_shared<EstimatedPower>(configuration);
+}

Boards/heltec-wifi-lora-32-v3/Source/devices/Power.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <memory>
+#include <Tactility/hal/power/PowerDevice.h>
+#include <driver/gpio.h>
+
+std::shared_ptr<tt::hal::power::PowerDevice> createPower();