esp-idf/components/esp_lcd/test/test_i2c_lcd_panel.c

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#include <stdio.h>
#include <string.h>
#include "sdkconfig.h"
#include "unity.h"
#include "test_utils.h"
#include "driver/i2c.h"
#include "driver/gpio.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
#include "esp_system.h"
#define TEST_LCD_H_RES (128)
#define TEST_LCD_V_RES (64)
#define TEST_I2C_SDA_GPIO (3)
#define TEST_I2C_SCL_GPIO (4)
#define TEST_I2C_HOST_ID (0)
#define TEST_I2C_DEV_ADDR (0x3C)
#define TEST_LCD_PIXEL_CLOCK_HZ (400 * 1000)
TEST_CASE("lcd panel with i2c interface (ssd1306)", "[lcd]")
{
const uint8_t pattern[][16] = {{
0x00, 0x7E, 0x42, 0x42, 0x42, 0x42, 0x7E, 0x00,
0x00, 0x7E, 0x42, 0x42, 0x42, 0x42, 0x7E, 0x00
},
{
0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81,
0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81
}
};
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = TEST_I2C_SDA_GPIO,
.scl_io_num = TEST_I2C_SCL_GPIO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = TEST_LCD_PIXEL_CLOCK_HZ,
};
TEST_ESP_OK(i2c_param_config(TEST_I2C_HOST_ID, &conf));
TEST_ESP_OK(i2c_driver_install(TEST_I2C_HOST_ID, I2C_MODE_MASTER, 0, 0, 0));
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_i2c_config_t io_config = {
.dev_addr = TEST_I2C_DEV_ADDR,
.control_phase_bytes = 1, // According to SSD1306 datasheet
.dc_bit_offset = 6, // According to SSD1306 datasheet
};
TEST_ESP_OK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)TEST_I2C_HOST_ID, &io_config, &io_handle));
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_panel_dev_config_t panel_config = {
.bits_per_pixel = 1,
.color_space = ESP_LCD_COLOR_SPACE_MONOCHROME,
.reset_gpio_num = -1,
};
TEST_ESP_OK(esp_lcd_new_panel_ssd1306(io_handle, &panel_config, &panel_handle));
TEST_ESP_OK(esp_lcd_panel_reset(panel_handle));
TEST_ESP_OK(esp_lcd_panel_init(panel_handle));
for (int i = 0; i < TEST_LCD_H_RES / 16; i++) {
for (int j = 0; j < TEST_LCD_V_RES / 8; j++) {
TEST_ESP_OK(esp_lcd_panel_draw_bitmap(panel_handle, i * 16, j * 8, i * 16 + 16, j * 8 + 8, pattern[i & 0x01]));
}
}
TEST_ESP_OK(esp_lcd_panel_del(panel_handle));
TEST_ESP_OK(esp_lcd_panel_io_del(io_handle));
TEST_ESP_OK(i2c_driver_delete(TEST_I2C_HOST_ID));
}
// The following test shows a porting example of LVGL GUI library
// To run the LVGL tests, you need to clone the LVGL library into components directory firstly
#if CONFIG_LV_USE_USER_DATA
#include "test_lvgl_port.h"
#if CONFIG_LV_COLOR_DEPTH_1
static bool notify_lvgl_ready_to_flush(esp_lcd_panel_io_handle_t panel_io, void *user_data, void *event_data)
{
lv_disp_t *disp = *(lv_disp_t **)user_data;
lv_disp_flush_ready(&disp->driver);
return false;
}
TEST_CASE("lvgl gui with i2c interface (ssd1306)", "[lcd][lvgl][ignore]")
{
// initialize LVGL graphics library
lv_disp_t *disp = NULL;
lv_init();
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = TEST_I2C_SDA_GPIO,
.scl_io_num = TEST_I2C_SCL_GPIO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = TEST_LCD_PIXEL_CLOCK_HZ,
};
TEST_ESP_OK(i2c_param_config(TEST_I2C_HOST_ID, &conf));
TEST_ESP_OK(i2c_driver_install(TEST_I2C_HOST_ID, I2C_MODE_MASTER, 0, 0, 0));
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_i2c_config_t io_config = {
.dev_addr = TEST_I2C_DEV_ADDR,
.control_phase_bytes = 1, // According to SSD1306 datasheet
.dc_bit_offset = 6, // According to SSD1306 datasheet
.on_color_trans_done = notify_lvgl_ready_to_flush,
.user_data = &disp,
};
TEST_ESP_OK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)TEST_I2C_HOST_ID, &io_config, &io_handle));
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_panel_dev_config_t panel_config = {
.bits_per_pixel = 1,
.color_space = ESP_LCD_COLOR_SPACE_MONOCHROME,
.reset_gpio_num = -1,
};
TEST_ESP_OK(esp_lcd_new_panel_ssd1306(io_handle, &panel_config, &panel_handle));
TEST_ESP_OK(esp_lcd_panel_reset(panel_handle));
TEST_ESP_OK(esp_lcd_panel_init(panel_handle));
test_lvgl_task_loop(panel_handle, TEST_LCD_H_RES, TEST_LCD_V_RES, &disp);
}
#endif // CONFIG_LV_COLOR_DEPTH_1
#endif // CONFIG_LV_USE_USER_DATA