#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_spi_flash.h"
#include "driver/spi_master.h"

#ifdef CONFIG_IDF_TARGET_ESP32
#define LCD_HOST    HSPI_HOST

#define PIN_NUM_MISO 25
#define PIN_NUM_MOSI 23
#define PIN_NUM_CLK  19
#define PIN_NUM_CS   22

#define PIN_NUM_DC   21
#define PIN_NUM_RST  18
#define PIN_NUM_BCKL 5
#elif defined CONFIG_IDF_TARGET_ESP32S2
#define LCD_HOST    SPI2_HOST

#define PIN_NUM_MISO 37
#define PIN_NUM_MOSI 35
#define PIN_NUM_CLK  36
#define PIN_NUM_CS   34

#define PIN_NUM_DC   4
#define PIN_NUM_RST  5
#define PIN_NUM_BCKL 6
#elif defined CONFIG_IDF_TARGET_ESP32C3
#define LCD_HOST    SPI2_HOST

#define PIN_NUM_MISO 2
#define PIN_NUM_MOSI 7
#define PIN_NUM_CLK  6
#define PIN_NUM_CS   10

#define PIN_NUM_DC   9
#define PIN_NUM_RST  4
#define PIN_NUM_BCKL 5
#endif

void ws_init()
{
}

uint8_t buffer[256];

void app_main(void)
{
  esp_err_t error;
  spi_device_handle_t spi;
  spi_bus_config_t cfg = {
    .miso_io_num = PIN_NUM_MISO,
    .mosi_io_num = PIN_NUM_MOSI,
    .sclk_io_num = PIN_NUM_CLK,
    .quadwp_io_num = -1,
    .quadhd_io_num = -1,
    .max_transfer_sz = 320 * 2 + 8,
  };

  spi_device_interface_config_t devcfg = {
    .clock_speed_hz = 25 * 100 * 1000, /* 2.5 MHz */
    .mode = 0,
    .spics_io_num = PIN_NUM_CS,
    .queue_size = 7,
    .pre_cb = NULL,
  };

  printf("Hello, World!\n");
  printf("miso: %d\n", PIN_NUM_MISO);
  printf("mosi: %d\n", PIN_NUM_MOSI);
  printf("sclk: %d\n", PIN_NUM_CLK);

  error = spi_bus_initialize(HSPI_HOST, &cfg, SPI_DMA_CH_AUTO);
  printf("Bus Init\n");
  ESP_ERROR_CHECK(error);

  error = spi_bus_add_device(HSPI_HOST, &devcfg, &spi);
  printf("Add Device\n");
  ESP_ERROR_CHECK(error);

  printf("Configuration complete!!\n");

  for (int i = 0; i < sizeof(buffer); ++ i) {
    buffer[i] = 0xfa;
  }

  spi_transaction_t t = {0};
  t.tx_buffer = buffer;
  t.length = sizeof(buffer) * 8;

  spi_transaction_t* rt;

  while (1) {
    error = spi_device_queue_trans(spi, &t, portMAX_DELAY);
    assert(error == ESP_OK);
    printf("SPI Transaction Equeued!!\n");

    error = spi_device_get_trans_result(spi, &rt, portMAX_DELAY);
    assert(error == ESP_OK);
    printf("SPI Transaction Sent!!\n");
  }
}