lvgl_esp32_drivers/lvgl_helpers.c

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/**
* @file lvgl_helpers.c
*
*/
/*********************
* INCLUDES
*********************/
#include "sdkconfig.h"
#include "lvgl_helpers.h"
#include "esp_log.h"
#include "lvgl_tft/disp_spi.h"
#include "lvgl_touch/tp_spi.h"
#include "lvgl_spi_conf.h"
#include "lvgl_i2c_conf.h"
#include "driver/i2c.h"
#ifdef LV_LVGL_H_INCLUDE_SIMPLE
#include "src/lv_core/lv_refr.h"
#else
#include "lvgl/src/lv_core/lv_refr.h"
#endif
/*********************
* DEFINES
*********************/
#define TAG "lvgl_helpers"
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/* Interface and driver initialization */
void lvgl_driver_init(void)
{
ESP_LOGI(TAG, "Display hor size: %d, ver size: %d", LV_HOR_RES_MAX, LV_VER_RES_MAX);
ESP_LOGI(TAG, "Display buffer size: %d", DISP_BUF_SIZE);
#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_FT81X)
ESP_LOGI(TAG, "Initializing SPI master for FT81X");
lvgl_spi_driver_init(TFT_SPI_HOST,
DISP_SPI_MISO, DISP_SPI_MOSI, DISP_SPI_CLK,
SPI_BUS_MAX_TRANSFER_SZ, 1,
DISP_SPI_IO2, DISP_SPI_IO3);
disp_spi_add_device(TFT_SPI_HOST);
disp_driver_init();
#if defined (CONFIG_LV_TOUCH_CONTROLLER_FT81X)
touch_driver_init();
#endif
return;
#endif
#if defined (SHARED_SPI_BUS)
ESP_LOGI(TAG, "Initializing shared SPI master");
lvgl_spi_driver_init(TFT_SPI_HOST,
TP_SPI_MISO, DISP_SPI_MOSI, DISP_SPI_CLK,
SPI_BUS_MAX_TRANSFER_SZ, 1,
-1, -1);
disp_spi_add_device(TFT_SPI_HOST);
tp_spi_add_device(TOUCH_SPI_HOST);
disp_driver_init();
touch_driver_init();
return;
#endif
#if defined (SHARED_I2C_BUS)
ESP_LOGI(TAG, "Initializing shared I2C master");
lvgl_i2c_driver_init(DISP_I2C_PORT,
DISP_I2C_SDA, DISP_I2C_SCL,
DISP_I2C_SPEED_HZ);
disp_driver_init();
touch_driver_init();
return;
#endif
/* Display controller initialization */
#if defined CONFIG_LV_TFT_DISPLAY_PROTOCOL_SPI
ESP_LOGI(TAG, "Initializing SPI master for display");
lvgl_spi_driver_init(TFT_SPI_HOST,
DISP_SPI_MISO, DISP_SPI_MOSI, DISP_SPI_CLK,
SPI_BUS_MAX_TRANSFER_SZ, 1,
DISP_SPI_IO2, DISP_SPI_IO3);
disp_spi_add_device(TFT_SPI_HOST);
disp_driver_init();
#elif defined (CONFIG_LV_TFT_DISPLAY_PROTOCOL_I2C)
ESP_LOGI(TAG, "Initializing I2C master for display");
/* Init the i2c master on the display driver code */
lvgl_i2c_driver_init(DISP_I2C_PORT,
DISP_I2C_SDA, DISP_I2C_SCL,
DISP_I2C_SPEED_HZ);
disp_driver_init();
#else
#error "No protocol defined for display controller"
#endif
/* Touch controller initialization */
#if CONFIG_LV_TOUCH_CONTROLLER != TOUCH_CONTROLLER_NONE
#if defined (CONFIG_LV_TOUCH_DRIVER_PROTOCOL_SPI)
ESP_LOGI(TAG, "Initializing SPI master for touch");
lvgl_spi_driver_init(TOUCH_SPI_HOST,
TP_SPI_MISO, TP_SPI_MOSI, TP_SPI_CLK,
0 /* Defaults to 4094 */, 2,
-1, -1);
tp_spi_add_device(TOUCH_SPI_HOST);
touch_driver_init();
#elif defined (CONFIG_LV_TOUCH_DRIVER_PROTOCOL_I2C)
ESP_LOGI(TAG, "Initializing I2C master for touch");
lvgl_i2c_driver_init(TOUCH_I2C_PORT,
TOUCH_I2C_SDA, TOUCH_I2C_SCL,
TOUCH_I2C_SPEED_HZ);
touch_driver_init();
#elif defined (CONFIG_LV_TOUCH_DRIVER_ADC)
touch_driver_init();
#elif defined (CONFIG_LV_TOUCH_DRIVER_DISPLAY)
touch_driver_init();
#else
#error "No protocol defined for touch controller"
#endif
#else
#endif
}
/* Config the i2c master
*
* This should init the i2c master to be used on display and touch controllers.
* So we should be able to know if the display and touch controllers shares the
* same i2c master.
*/
bool lvgl_i2c_driver_init(int port, int sda_pin, int scl_pin, int speed_hz)
{
esp_err_t err;
ESP_LOGI(TAG, "Initializing I2C master port %d...", port);
ESP_LOGI(TAG, "SDA pin: %d, SCL pin: %d, Speed: %d (Hz)",
sda_pin, scl_pin, speed_hz);
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = sda_pin,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = scl_pin,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = speed_hz,
};
ESP_LOGI(TAG, "Setting I2C master configuration...");
err = i2c_param_config(port, &conf);
assert(ESP_OK == err);
ESP_LOGI(TAG, "Installing I2C master driver...");
err = i2c_driver_install(port,
I2C_MODE_MASTER,
0, 0 /*I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE */,
0 /* intr_alloc_flags */);
assert(ESP_OK == err);
return ESP_OK != err;
}
/* Initialize spi bus master */
bool lvgl_spi_driver_init(int host,
int miso_pin, int mosi_pin, int sclk_pin,
int max_transfer_sz,
int dma_channel,
int quadwp_pin, int quadhd_pin)
{
#if defined (CONFIG_IDF_TARGET_ESP32)
assert((SPI_HOST <= host) && (VSPI_HOST >= host));
const char *spi_names[] = {
"SPI_HOST", "HSPI_HOST", "VSPI_HOST"
};
#elif defined (CONFIG_IDF_TARGET_ESP32S2)
assert((SPI_HOST <= host) && (HSPI_HOST >= host));
const char *spi_names[] = {
"SPI_HOST", "", ""
};
#endif
ESP_LOGI(TAG, "Configuring SPI host %s (%d)", spi_names[host], host);
ESP_LOGI(TAG, "MISO pin: %d, MOSI pin: %d, SCLK pin: %d, IO2/WP pin: %d, IO3/HD pin: %d",
miso_pin, mosi_pin, sclk_pin, quadwp_pin, quadhd_pin);
ESP_LOGI(TAG, "Max transfer size: %d (bytes)", max_transfer_sz);
spi_bus_config_t buscfg = {
.miso_io_num = miso_pin,
.mosi_io_num = mosi_pin,
.sclk_io_num = sclk_pin,
.quadwp_io_num = quadwp_pin,
.quadhd_io_num = quadhd_pin,
.max_transfer_sz = max_transfer_sz
};
ESP_LOGI(TAG, "Initializing SPI bus...");
esp_err_t ret = spi_bus_initialize(host, &buscfg, dma_channel);
assert(ret == ESP_OK);
return ESP_OK != ret;
}