definitely-not-NVGs/firmware/firmware.ino

/* caméra : https://github.com/espressif/esp32-camera
 * écran : https://github.com/sbcshop/Round-LCD-HAT/blob/main/lib/GC9A01A%20Datasheet.pdf
 * https://esp32.com/viewtopic.php?t=14376
 */

// TODO refactor / cleanup

#include <SPI.h>
#include "esp_camera.h"

#define BOARD_ESP32CAM_AITHINKER
#define CAMERA_MODEL_AI_THINKER

#define RST 2
#define DC 12
#define CS 15
#define CLK 14
#define MOSI 13

#define SPI_HZ 62500000
#define MY_MODE SPI_MODE3
#define MY_BYTE MSBFIRST

enum type_t { CMD = LOW, DATA = HIGH };

SPIClass *hspi = NULL;
camera_fb_t *fb = NULL;
camera_config_t my_cam_config;

uint16_t screen[240];
uint16_t tmp[240];

void send_to_screen(SPIClass *spi, byte data, type_t type) {
    digitalWrite(DC, type);
    digitalWrite(CS, LOW);
    spi->beginTransaction(SPISettings(SPI_HZ, MY_BYTE, MY_MODE));
    spi->transfer(data);
    spi->endTransaction();
    digitalWrite(CS, HIGH);
}

void send_buffer(SPIClass *spi, uint16_t *data, int size) {
    digitalWrite(DC, HIGH);
    digitalWrite(CS, LOW);
    spi->beginTransaction(SPISettings(SPI_HZ, MY_BYTE, MY_MODE));
    spi->transfer(data, size);
    spi->endTransaction();
    digitalWrite(CS, HIGH);
}

void setup() {
    Serial.begin(9600);
    Serial.setDebugOutput(true);

    hspi = new SPIClass(HSPI);
    hspi->begin();

    pinMode(hspi->pinSS(), OUTPUT);
    pinMode(RST, OUTPUT);
    pinMode(DC, OUTPUT);

    digitalWrite(RST, HIGH);
    delay(10);
    digitalWrite(RST, LOW);
    delay(10);
    digitalWrite(RST, HIGH);
    delay(20);

    send_to_screen(hspi, 0xEF, CMD);
    send_to_screen(hspi, 0xEB, CMD);
    send_to_screen(hspi, 0x14, DATA);
    send_to_screen(hspi, 0xFE, CMD);
    send_to_screen(hspi, 0xEF, CMD);
    send_to_screen(hspi, 0xEB, CMD);
    send_to_screen(hspi, 0x14, DATA);

    send_to_screen(hspi, 0x84, CMD);
    send_to_screen(hspi, 0x40, DATA);
    send_to_screen(hspi, 0x85, CMD);
    send_to_screen(hspi, 0xFF, DATA);
    send_to_screen(hspi, 0x86, CMD);
    send_to_screen(hspi, 0xFF, DATA);
    send_to_screen(hspi, 0x87, CMD);
    send_to_screen(hspi, 0xFF, DATA);
    send_to_screen(hspi, 0x88, CMD);
    send_to_screen(hspi, 0x0A, DATA);
    send_to_screen(hspi, 0x89, CMD);
    send_to_screen(hspi, 0x21, DATA);
    send_to_screen(hspi, 0x8A, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x8B, CMD);
    send_to_screen(hspi, 0x80, DATA);
    send_to_screen(hspi, 0x8C, CMD);
    send_to_screen(hspi, 0x01, DATA);
    send_to_screen(hspi, 0x8D, CMD);
    send_to_screen(hspi, 0x01, DATA);
    send_to_screen(hspi, 0x8E, CMD);
    send_to_screen(hspi, 0xFF, DATA);
    send_to_screen(hspi, 0x8F, CMD);
    send_to_screen(hspi, 0xFF, DATA);
    send_to_screen(hspi, 0xB6, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x36, CMD);
    send_to_screen(hspi, 0x08, DATA);
    //send_to_screen(hspi, 0x48, DATA);

    send_to_screen(hspi, 0x3A, CMD);
    send_to_screen(hspi, 0x05, DATA);
    //send_to_screen(hspi, 0x66, DATA);
    //send_to_screen(hspi, 0x60, DATA);

    send_to_screen(hspi, 0x90, CMD);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0xBD, CMD);
    send_to_screen(hspi, 0x06, DATA);
    send_to_screen(hspi, 0xBC, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0xFF, CMD);
    send_to_screen(hspi, 0x60, DATA);
    send_to_screen(hspi, 0x01, DATA);
    send_to_screen(hspi, 0x04, DATA);
    send_to_screen(hspi, 0xC3, CMD);
    send_to_screen(hspi, 0x13, DATA);
    send_to_screen(hspi, 0xC4, CMD);
    send_to_screen(hspi, 0x13, DATA);
    send_to_screen(hspi, 0xC9, CMD);
    send_to_screen(hspi, 0x22, DATA);
    send_to_screen(hspi, 0xBE, CMD);
    send_to_screen(hspi, 0x11, DATA);
    send_to_screen(hspi, 0xE1, CMD);
    send_to_screen(hspi, 0x10, DATA);
    send_to_screen(hspi, 0x0E, DATA);
    send_to_screen(hspi, 0xDF, CMD);
    send_to_screen(hspi, 0x21, DATA);
    send_to_screen(hspi, 0x0C, DATA);
    send_to_screen(hspi, 0x02, DATA);
    send_to_screen(hspi, 0xF0, CMD);
    send_to_screen(hspi, 0x45, DATA);
    send_to_screen(hspi, 0x09, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x26, DATA);
    send_to_screen(hspi, 0x2A, DATA);
    send_to_screen(hspi, 0xF1, CMD);
    send_to_screen(hspi, 0x43, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x72, DATA);
    send_to_screen(hspi, 0x36, DATA);
    send_to_screen(hspi, 0x37, DATA);
    send_to_screen(hspi, 0x6F, DATA);
    send_to_screen(hspi, 0xF2, CMD);
    send_to_screen(hspi, 0x45, DATA);
    send_to_screen(hspi, 0x09, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x08, DATA);
    send_to_screen(hspi, 0x26, DATA);
    send_to_screen(hspi, 0x2A, DATA);
    send_to_screen(hspi, 0xF3, CMD);
    send_to_screen(hspi, 0x43, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x72, DATA);
    send_to_screen(hspi, 0x36, DATA);
    send_to_screen(hspi, 0x37, DATA);
    send_to_screen(hspi, 0x6F, DATA);
    send_to_screen(hspi, 0xED, CMD);
    send_to_screen(hspi, 0x1B, DATA);
    send_to_screen(hspi, 0x0B, DATA);
    send_to_screen(hspi, 0xAE, CMD);
    send_to_screen(hspi, 0x77, DATA);
    send_to_screen(hspi, 0xCD, CMD);
    send_to_screen(hspi, 0x63, DATA);
    /*
       send_(hspi, 0x70,COMMAND);
       send_(hspi, 0x07,PARAM);
       send_(hspi, 0x07,PARAM);
       send_(hspi, 0x04,PARAM);
       send_(hspi, 0x0E,PARAM);
       send_(hspi, 0x0F,PARAM);
       send_(hspi, 0x09,PARAM);
       send_(hspi, 0x07,PARAM);
       send_(hspi, 0x08,PARAM);
       send_(hspi, 0x03,PARAM);
     */
    send_to_screen(hspi, 0xE8, CMD);
    send_to_screen(hspi, 0x34, DATA);
    send_to_screen(hspi, 0x62, CMD);
    send_to_screen(hspi, 0x18, DATA);
    send_to_screen(hspi, 0x0D, DATA);
    send_to_screen(hspi, 0x71, DATA);
    send_to_screen(hspi, 0xED, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x18, DATA);
    send_to_screen(hspi, 0x0F, DATA);
    send_to_screen(hspi, 0x71, DATA);
    send_to_screen(hspi, 0xEF, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x63, CMD);
    send_to_screen(hspi, 0x18, DATA);
    send_to_screen(hspi, 0x11, DATA);
    send_to_screen(hspi, 0x71, DATA);
    send_to_screen(hspi, 0xF1, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x18, DATA);
    send_to_screen(hspi, 0x13, DATA);
    send_to_screen(hspi, 0x71, DATA);
    send_to_screen(hspi, 0xF3, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x70, DATA);
    send_to_screen(hspi, 0x64, CMD);
    send_to_screen(hspi, 0x28, DATA);
    send_to_screen(hspi, 0x29, DATA);
    send_to_screen(hspi, 0xF1, DATA);
    send_to_screen(hspi, 0x01, DATA);
    send_to_screen(hspi, 0xF1, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x07, DATA);
    send_to_screen(hspi, 0x66, CMD);
    send_to_screen(hspi, 0x3C, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0xCD, DATA);
    send_to_screen(hspi, 0x67, DATA);
    send_to_screen(hspi, 0x45, DATA);
    send_to_screen(hspi, 0x45, DATA);
    send_to_screen(hspi, 0x10, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x67, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x3C, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x01, DATA);
    send_to_screen(hspi, 0x54, DATA);
    send_to_screen(hspi, 0x10, DATA);
    send_to_screen(hspi, 0x32, DATA);
    send_to_screen(hspi, 0x98, DATA);
    send_to_screen(hspi, 0x74, CMD);
    send_to_screen(hspi, 0x10, DATA);
    send_to_screen(hspi, 0x85, DATA);
    send_to_screen(hspi, 0x80, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x4E, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x98, CMD);
    send_to_screen(hspi, 0x3E, DATA);
    send_to_screen(hspi, 0x07, DATA);
    send_to_screen(hspi, 0x35, CMD);
    send_to_screen(hspi, 0x21, CMD);
    send_to_screen(hspi, 0x11, CMD);

    delay(150);
    send_to_screen(hspi, 0x29, CMD);
    delay(150);

    send_to_screen(hspi, 0x2A, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0xEF, DATA);
    send_to_screen(hspi, 0x2B, CMD);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0x00, DATA);
    send_to_screen(hspi, 0xEF, DATA);

    my_cam_config.ledc_channel = LEDC_CHANNEL_0;
    my_cam_config.ledc_timer = LEDC_TIMER_0;
    my_cam_config.pin_d0 = 5;
    my_cam_config.pin_d1 = 18;
    my_cam_config.pin_d2 = 19;
    my_cam_config.pin_d3 = 21;
    my_cam_config.pin_d4 = 36;
    my_cam_config.pin_d5 = 39;
    my_cam_config.pin_d6 = 34;
    my_cam_config.pin_d7 = 35;
    my_cam_config.pin_xclk = 0;
    my_cam_config.pin_pclk = 22;
    my_cam_config.pin_vsync = 25;
    my_cam_config.pin_href = 23;
    my_cam_config.pin_sccb_sda = 26;
    my_cam_config.pin_sccb_scl = 27;
    my_cam_config.pin_pwdn = 32;
    //my_cam_config.xclk_freq_hz = 12000000;
    my_cam_config.xclk_freq_hz = 20000000;
    my_cam_config.pin_reset = -1;
    my_cam_config.pixel_format = PIXFORMAT_RGB565;
    my_cam_config.frame_size = FRAMESIZE_240X240;
    //my_cam_config.jpeg_quality = 40;
    my_cam_config.fb_count = 4;
    my_cam_config.grab_mode = CAMERA_GRAB_LATEST;

    esp_err_t err = esp_camera_init(&my_cam_config);
    if (err != ESP_OK) {
          Serial.printf("Camera init failed with error 0x%x", err);
            return;
            
    }

    sensor_t *my_sensor = esp_camera_sensor_get();
    my_sensor->set_whitebal(my_sensor, 0);
    my_sensor->set_awb_gain(my_sensor, 0);
    my_sensor->set_exposure_ctrl(my_sensor, 0);
    my_sensor->set_gain_ctrl(my_sensor, 0);
    my_sensor->set_wpc(my_sensor, 0);
    my_sensor->set_raw_gma(my_sensor, 0);
    my_sensor->set_lenc(my_sensor, 0);
    my_sensor->set_dcw(my_sensor, 0); 
    my_sensor->set_special_effect(my_sensor, 4);

    Serial.print("===== fin !! =====");

    for(int i = 0; i < 240; i++) {
        screen[i] = 0x0000;
    }

    send_to_screen(hspi, 0x2C, CMD);
    for (int i= 0; i<240; i++)
    {
        memcpy(tmp, screen, 240 * 2);
        send_buffer(hspi, screen, 240 * 2);
    }
}

void loop() {
    fb = esp_camera_fb_get();
    // TODO check si tout est bon

    send_to_screen(hspi, 0x2C, CMD);
    for (int i= 0; i<240; i++)
    {
        memcpy(tmp, (fb->buf + (i * 240 * 2)), 240 * 2);
        send_buffer(hspi, tmp, 240 * 2);
    }

    esp_camera_fb_return(fb);

    delay(5);
}