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1achy edited this page May 16, 2024
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Welcome to the ESP32 Touchscreen Gamepad with BLE Integration project! This project utilizes an ESP32 microcontroller, a touchscreen display, and BLE Gamepad functionality to create a customizable gamepad interface.
This project includes the following components:
- ESP32 Microcontroller: Handles the processing and BLE communication.
- Touchscreen Display: Displays the gamepad interface and captures touch inputs.
- BLE Gamepad Library: Enables the ESP32 to function as a Bluetooth gamepad.
- ESP32 Development Board
- 320x240 Touchscreen Display
- USB Cable
- Computer with PlatformIO installed
- PlatformIO IDE or VSCode with PlatformIO extension
- Arduino framework for ESP32
- Libraries: LovyanGFX, BLE Gamepad, and other dependencies listed in
platformio.ini
ESP32_TouchGamepad/
├── include/
│ ├── LGFX_ESP32_esp32-2432s028.hpp
│ └── SHCustomProtocol.h
├── src/
│ └── main.ino
├── platformio.ini
└── README.md
Create a platformio.ini file with the following content to manage library dependencies and board configuration.
[common]
lib_deps =
adafruit/Adafruit GFX Library@^1.11.5
adafruit/Adafruit LED Backpack Library@^1.1
adafruit/Adafruit NeoPixel@^1.10.5
adafruit/Adafruit PCD8544 Nokia 5110 LCD library@^2.0.1
adafruit/Adafruit [email protected]
adafruit/Adafruit WS2801 [email protected]
lemmingdev/ESP32-BLE-Gamepad@^0.5.2
h2zero/NimBLE-Arduino@^1.4.0
https://github.com/9khil/LedControl#913cbcebb8ceea6783bb271d385d18b99c2d5e79
marcoschwartz/[email protected]
smougenot/[email protected]+sha.9486982048
https://github.com/paulo-raca/ArduinoBufferedStreams.git#5e3a1a3d140955384a07878c64808e77fa2a7521
noah1510/LedController @ ^1.7.0
locoduino/RingBuffer@^1.0.4
https://github.com/maxint-rd/TM16xx#95a1bdd959bf6fce75d0059f129386155f49f984
https://github.com/khoih-prog/ESPAsync_WiFiManager
makuna/NeoPixelBus
[env:esp32]
platform = espressif32@^6.2
board = esp32doit-devkit-v1
framework = arduino
lib_deps =
moononournation/GFX Library for Arduino@^1.4.0
locoduino/RingBuffer@^1.0.4
https://github.com/paulo-raca/ArduinoBufferedStreams.git#5e3a1a3d140955384a07878c64808e77fa2a7521
https://github.com/khoih-prog/ESPAsync_WiFiManager
build_flags =
-w -DESP32=true
monitor_speed = 115200
Main Code (main.ino)
Create a main.ino file in the src directory with the following content:
cpp
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#include "SHCustomProtocol.h"
SHCustomProtocol shCustomProtocol;
void setup() {
shCustomProtocol.setup();
}
void loop() {
shCustomProtocol.loop();
}
Display Configuration (LGFX_ESP32_esp32-2432s028.hpp)
Create the LGFX_ESP32_esp32-2432s028.hpp file in the include directory to configure the touchscreen display.
cpp
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#ifndef LGFX_ESP32_ESP32_2432S028_HPP
#define LGFX_ESP32_ESP32_2432S028_HPP
#include <LovyanGFX.hpp>
class LGFX : public lgfx::LGFX_Device
{
lgfx::Panel_ILI9341 _panel_instance;
lgfx::Bus_SPI _bus_instance;
public:
LGFX(void)
{
{
auto cfg = _bus_instance.config();
cfg.spi_host = VSPI_HOST;
cfg.spi_mode = 0;
cfg.freq_write = 40000000;
cfg.freq_read = 16000000;
cfg.spi_3wire = false;
cfg.use_lock = true;
cfg.dma_channel = 1;
cfg.pin_sclk = 18;
cfg.pin_mosi = 23;
cfg.pin_miso = -1;
cfg.pin_dc = 2;
_bus_instance.config(cfg);
_panel_instance.setBus(&_bus_instance);
}
{
auto cfg = _panel_instance.config();
cfg.pin_cs = 15;
cfg.pin_rst = 4;
cfg.pin_busy = -1;
cfg.panel_width = 320;
cfg.panel_height = 240;
cfg.offset_x = 0;
cfg.offset_y = 0;
cfg.offset_rotation = 0;
cfg.dummy_read_pixel = 8;
cfg.dummy_read_bits = 1;
cfg.readable = true;
cfg.invert = false;
cfg.rgb_order = false;
cfg.dlen_16bit = false;
cfg.bus_shared = false;
_panel_instance.config(cfg);
}
setPanel(&_panel_instance);
}
};
#endif // LGFX_ESP32_ESP32_2432S028_HPP
Custom Protocol (SHCustomProtocol.h)
Create the SHCustomProtocol.h file in the include directory to define the custom protocol for handling touchscreen inputs and BLE gamepad functionality.
cpp
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#ifndef __SHCUSTOMPROTOCOL_H__
#define __SHCUSTOMPROTOCOL_H__
#define LGFX_USE_V1
#include <LovyanGFX.hpp>
#include <lgfx_user/LGFX_ESP32_esp32-2432s028.hpp>
#include <Arduino.h>
#include <map>
#include <BleGamepad.h>
static LGFX tft;
static const int SCREEN_WIDTH = 320;
static const int SCREEN_HEIGHT = 240;
static const int X_CENTER = SCREEN_WIDTH / 2;
static const int Y_CENTER = SCREEN_HEIGHT / 2;
static const int ROWS = 5;
static const int COLS = 5;
static const int CELL_WIDTH = SCREEN_WIDTH / COLS;
static const int HALF_CELL_WIDTH = CELL_WIDTH / 2;
static const int CELL_HIGHT = SCREEN_HEIGHT / ROWS;
static const int HALF_CELL_HIGHT = CELL_HIGHT / 2;
static const int COL[] = {0, CELL_WIDTH, CELL_WIDTH * 2, CELL_WIDTH * 3, CELL_WIDTH * 4, CELL_WIDTH * 6, CELL_WIDTH * 7};
static const int ROW[] = {0, CELL_HIGHT, CELL_HIGHT * 2, CELL_HIGHT * 3, CELL_HIGHT * 4, CELL_HIGHT * 6, CELL_HIGHT * 7};
std::map<String, String> prevData;
std::map<String, int32_t> prevColor;
BleGamepad bleGamepad("ESP32 Touch Gamepad", "YourCompany", 100);
BleGamepadConfiguration bleGamepadConfig;
int currentPage = 1;
class SHCustomProtocol
{
private:
int rpmPercent = 50;
int prev_rpmPercent = 50;
int rpmRedLineSetting = 90;
String gear = "N";
String prev_gear;
String speed = "0";
String currentLapTime = "00:00.00";
String lastLapTime = "00:00.00";
String bestLapTime = "00:00.00";
String sessionBestLiveDeltaSeconds = "0.000";
String sessionBestLiveDeltaProgressSeconds = "0.00";
String tyrePressureFrontLeft = "00.0";
String tyrePressureFrontRight = "00.0";
String tyrePressureRearLeft = "00.0";
String tyrePressureRearRight = "00.0";
String tcLevel = "0";