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Move drivers from the lv_port_esp32 to here
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‎CMakeLists.txt

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if(ESP_PLATFORM)
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file(GLOB SOURCES *.c)
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idf_component_register(SRCS ${SOURCES}
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INCLUDE_DIRS .
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REQUIRES lvgl)
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endif()

‎README.md

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# lvgl_esp32_drivers
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Drivers for ESP32
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# lvgl esp32 drivers

‎component.mk

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# LVGL esp32 drivers
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COMPONENT_SRCDIRS := .
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COMPONENT_ADD_INCLUDEDIRS := .

‎lvgl_helpers.c

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

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/**
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* @file lvgl_helpers.h
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*/
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#ifndef LVGL_HELPERS_H
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#define LVGL_HELPERS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include <stdbool.h>
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#include "lvgl_spi_conf.h"
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#include "lvgl_tft/disp_driver.h"
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#include "lvgl_touch/touch_driver.h"
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/*********************
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* DEFINES
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*********************/
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#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ST7789)
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ST7735S
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_HX8357
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SH1107
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#define DISP_BUF_SIZE (CONFIG_LV_DISPLAY_WIDTH*CONFIG_LV_DISPLAY_HEIGHT)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9481
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9486
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9488
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9341
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 64)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SSD1306
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#define DISP_BUF_SIZE (CONFIG_LV_DISPLAY_WIDTH*CONFIG_LV_DISPLAY_HEIGHT)
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#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_FT81X)
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#define DISP_BUF_LINES 40
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * DISP_BUF_LINES)
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#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_IL3820)
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#define DISP_BUF_SIZE (CONFIG_LV_DISPLAY_HEIGHT * IL3820_COLUMNS)
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#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_RA8875
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_GC9A01)
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#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
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#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_JD79653A)
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#define DISP_BUF_SIZE ((CONFIG_LV_DISPLAY_HEIGHT * CONFIG_LV_DISPLAY_WIDTH) / 8) // 5KB
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#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_UC8151D)
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#define DISP_BUF_SIZE ((CONFIG_LV_DISPLAY_HEIGHT * CONFIG_LV_DISPLAY_WIDTH) / 8) // 2888 bytes
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#else
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#error "No display controller selected"
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/* Initialize detected SPI and I2C bus and devices */
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void lvgl_driver_init(void);
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/* Initialize SPI master */
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bool lvgl_spi_driver_init(int host, int miso_pin, int mosi_pin, int sclk_pin,
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int max_transfer_sz, int dma_channel, int quadwp_pin, int quadhd_pin);
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/* Initialize I2C master */
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bool lvgl_i2c_driver_init(int port, int sda_pin, int scl_pin, int speed);
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/**********************
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* MACROS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* LVGL_HELPERS_H */

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