Remove unused driver

This commit is contained in:
Ken Van Hoeylandt 2026-07-14 00:03:50 +02:00
parent 1069032148
commit b02663b4bf
4 changed files with 0 additions and 354 deletions

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idf_component_register(
SRC_DIRS "Source"
INCLUDE_DIRS "Source"
REQUIRES Tactility driver esp_lvgl_port
)

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# XPT2046_SoftSPI Driver
XPT2046_SoftSPI is a driver for the XPT2046 resistive touchscreen controller that uses SoftSPI.
Inspiration from: https://github.com/ddxfish/XPT2046_Bitbang_Arduino_Library/

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#include "Xpt2046SoftSpi.h"
#include <tactility/log.h>
#include <algorithm>
#include <driver/gpio.h>
#include <esp_err.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <rom/ets_sys.h>
constexpr auto* TAG = "Xpt2046SoftSpi";
constexpr auto CMD_READ_Y = 0x90;
constexpr auto CMD_READ_X = 0xD0;
constexpr int RAW_MIN_DEFAULT = 100;
constexpr int RAW_MAX_DEFAULT = 1900;
constexpr int RAW_VALID_MIN = 100;
constexpr int RAW_VALID_MAX = 3900;
Xpt2046SoftSpi::Xpt2046SoftSpi(std::unique_ptr<Configuration> inConfiguration)
: configuration(std::move(inConfiguration)) {
assert(configuration != nullptr);
}
bool Xpt2046SoftSpi::start() {
LOG_I(TAG, "Starting Xpt2046SoftSpi touch driver");
// Configure GPIO pins
gpio_config_t io_conf = {};
// Configure MOSI, CLK, CS as outputs
io_conf.intr_type = GPIO_INTR_DISABLE;
io_conf.mode = GPIO_MODE_OUTPUT;
io_conf.pin_bit_mask = (1ULL << configuration->mosiPin) |
(1ULL << configuration->clkPin) |
(1ULL << configuration->csPin);
io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
if (gpio_config(&io_conf) != ESP_OK) {
LOG_E(TAG, "Failed to configure output pins");
return false;
}
// Configure MISO as input
io_conf.mode = GPIO_MODE_INPUT;
io_conf.pin_bit_mask = (1ULL << configuration->misoPin);
io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
if (gpio_config(&io_conf) != ESP_OK) {
LOG_E(TAG, "Failed to configure input pin");
return false;
}
// Initialize pin states
gpio_set_level(configuration->csPin, 1); // CS high
gpio_set_level(configuration->clkPin, 0); // CLK low
gpio_set_level(configuration->mosiPin, 0); // MOSI low
LOG_I(
TAG,
"GPIO configured: MOSI=%d, MISO=%d, CLK=%d, CS=%d",
static_cast<int>(configuration->mosiPin),
static_cast<int>(configuration->misoPin),
static_cast<int>(configuration->clkPin),
static_cast<int>(configuration->csPin)
);
return true;
}
bool Xpt2046SoftSpi::stop() {
LOG_I(TAG, "Stopping Xpt2046SoftSpi touch driver");
// Stop LVLG if needed
if (lvglDevice != nullptr) {
stopLvgl();
}
return true;
}
bool Xpt2046SoftSpi::startLvgl(lv_display_t* display) {
(void)display;
if (lvglDevice != nullptr) {
LOG_E(TAG, "LVGL was already started");
return false;
}
lvglDevice = lv_indev_create();
if (lvglDevice == nullptr) {
LOG_E(TAG, "Failed to create LVGL input device");
return false;
}
lv_indev_set_type(lvglDevice, LV_INDEV_TYPE_POINTER);
lv_indev_set_read_cb(lvglDevice, touchReadCallback);
lv_indev_set_user_data(lvglDevice, this);
LOG_I(TAG, "Xpt2046SoftSpi touch driver started successfully");
return true;
}
bool Xpt2046SoftSpi::stopLvgl() {
if (lvglDevice != nullptr) {
lv_indev_delete(lvglDevice);
lvglDevice = nullptr;
}
return true;
}
int Xpt2046SoftSpi::readSPI(uint8_t command) {
int result = 0;
// Pull CS low for this transaction
gpio_set_level(configuration->csPin, 0);
ets_delay_us(1);
// Send 8-bit command
for (int i = 7; i >= 0; i--) {
gpio_set_level(configuration->mosiPin, (command & (1 << i)) ? 1 : 0);
gpio_set_level(configuration->clkPin, 1);
ets_delay_us(1);
gpio_set_level(configuration->clkPin, 0);
ets_delay_us(1);
}
for (int i = 11; i >= 0; i--) {
gpio_set_level(configuration->clkPin, 1);
ets_delay_us(1);
if (gpio_get_level(configuration->misoPin)) {
result |= (1 << i);
}
gpio_set_level(configuration->clkPin, 0);
ets_delay_us(1);
}
// Pull CS high for this transaction
gpio_set_level(configuration->csPin, 1);
return result;
}
bool Xpt2046SoftSpi::readRawPoint(uint16_t& x, uint16_t& y) {
constexpr int sampleCount = 8;
int totalX = 0;
int totalY = 0;
int validSamples = 0;
for (int i = 0; i < sampleCount; i++) {
const int rawX = readSPI(CMD_READ_X);
const int rawY = readSPI(CMD_READ_Y);
if (rawX > RAW_VALID_MIN && rawX < RAW_VALID_MAX && rawY > RAW_VALID_MIN && rawY < RAW_VALID_MAX) {
totalX += rawX;
totalY += rawY;
validSamples++;
}
vTaskDelay(pdMS_TO_TICKS(1));
}
if (validSamples < 3) {
return false;
}
x = static_cast<uint16_t>(totalX / validSamples);
y = static_cast<uint16_t>(totalY / validSamples);
return true;
}
bool Xpt2046SoftSpi::getTouchPoint(Point& point) {
uint16_t rawX = 0;
uint16_t rawY = 0;
if (!readRawPoint(rawX, rawY)) {
return false;
}
int mappedX = (static_cast<int>(rawX) - RAW_MIN_DEFAULT) * static_cast<int>(configuration->xMax) /
(RAW_MAX_DEFAULT - RAW_MIN_DEFAULT);
int mappedY = (static_cast<int>(rawY) - RAW_MIN_DEFAULT) * static_cast<int>(configuration->yMax) /
(RAW_MAX_DEFAULT - RAW_MIN_DEFAULT);
if (configuration->swapXy) {
std::swap(mappedX, mappedY);
}
if (configuration->mirrorX) {
mappedX = static_cast<int>(configuration->xMax) - mappedX;
}
if (configuration->mirrorY) {
mappedY = static_cast<int>(configuration->yMax) - mappedY;
}
uint16_t x = static_cast<uint16_t>(std::clamp(mappedX, 0, static_cast<int>(configuration->xMax)));
uint16_t y = static_cast<uint16_t>(std::clamp(mappedY, 0, static_cast<int>(configuration->yMax)));
point.x = x;
point.y = y;
return true;
}
bool Xpt2046SoftSpi::isTouched() {
uint16_t x = 0;
uint16_t y = 0;
return readRawPoint(x, y);
}
void Xpt2046SoftSpi::touchReadCallback(lv_indev_t* indev, lv_indev_data_t* data) {
auto* touch = static_cast<Xpt2046SoftSpi*>(lv_indev_get_user_data(indev));
if (touch == nullptr) {
data->state = LV_INDEV_STATE_RELEASED;
return;
}
Point point;
if (touch->getTouchPoint(point)) {
data->point.x = point.x;
data->point.y = point.y;
data->state = LV_INDEV_STATE_PRESSED;
} else {
data->state = LV_INDEV_STATE_RELEASED;
}
}
// Return driver instance if any
std::shared_ptr<tt::hal::touch::TouchDriver> Xpt2046SoftSpi::getTouchDriver() {
assert(lvglDevice == nullptr); // Still attached to LVGL context. Call stopLvgl() first.
if (touchDriver == nullptr) {
touchDriver = std::make_shared<Xpt2046SoftSpiDriver>(this);
}
return touchDriver;
}

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#pragma once
#include "Tactility/hal/touch/TouchDevice.h"
#include "Tactility/hal/touch/TouchDriver.h"
#include "lvgl.h"
#include <driver/gpio.h>
#include <memory>
#include <string>
#ifndef TFT_WIDTH
#define TFT_WIDTH 240
#endif
#ifndef TFT_HEIGHT
#define TFT_HEIGHT 320
#endif
struct Point {
int x;
int y;
};
class Xpt2046SoftSpi : public tt::hal::touch::TouchDevice {
public:
class Configuration {
public:
Configuration(
gpio_num_t mosiPin,
gpio_num_t misoPin,
gpio_num_t clkPin,
gpio_num_t csPin,
uint16_t xMax = TFT_WIDTH,
uint16_t yMax = TFT_HEIGHT,
bool swapXy = false,
bool mirrorX = false,
bool mirrorY = false
) : mosiPin(mosiPin),
misoPin(misoPin),
clkPin(clkPin),
csPin(csPin),
xMax(xMax),
yMax(yMax),
swapXy(swapXy),
mirrorX(mirrorX),
mirrorY(mirrorY)
{}
gpio_num_t mosiPin;
gpio_num_t misoPin;
gpio_num_t clkPin;
gpio_num_t csPin;
uint16_t xMax;
uint16_t yMax;
bool swapXy;
bool mirrorX;
bool mirrorY;
};
private:
class Xpt2046SoftSpiDriver final : public tt::hal::touch::TouchDriver {
Xpt2046SoftSpi* device;
public:
Xpt2046SoftSpiDriver(Xpt2046SoftSpi* device) : device(device) {}
bool getTouchedPoints(uint16_t* x, uint16_t* y, uint16_t* strength, uint8_t* pointCount, uint8_t maxPointCount) override {
Point point;
if (device->isTouched() && device->getTouchPoint(point)) {
*x = point.x;
*y = point.y;
*pointCount = 1;
return true;
} else {
*pointCount = 0;
return false;
}
}
};
std::unique_ptr<Configuration> configuration;
lv_indev_t* lvglDevice = nullptr;
std::shared_ptr<tt::hal::touch::TouchDriver> touchDriver;
int readSPI(uint8_t command);
bool readRawPoint(uint16_t& x, uint16_t& y);
static void touchReadCallback(lv_indev_t* indev, lv_indev_data_t* data);
public:
explicit Xpt2046SoftSpi(std::unique_ptr<Configuration> inConfiguration);
// TouchDevice interface
std::string getName() const final { return "Xpt2046SoftSpi"; }
std::string getDescription() const final { return "Xpt2046 Soft SPI touch driver"; }
bool start() override;
bool stop() override;
bool supportsLvgl() const override { return true; }
bool startLvgl(lv_display_t* display) override;
bool stopLvgl() override;
bool supportsTouchDriver() override { return true; }
std::shared_ptr<tt::hal::touch::TouchDriver> getTouchDriver() override;
lv_indev_t* getLvglIndev() override { return lvglDevice; }
// XPT2046-specific methods
bool getTouchPoint(Point& point);
bool isTouched();
};