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feat(i2c_lcd): use new i2c master driver in oled example

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Closes https://github.com/espressif/esp-idf/issues/13201
This commit is contained in:
morris
2024-02-18 16:35:45 +08:00
parent 12ae1c19d2
commit aa7d73c8a4
5 changed files with 38 additions and 50 deletions
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23
examples/peripherals/lcd/i2c_oled/README.md
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@@ -19,7 +19,7 @@ This example shows how to make use of the SSD1306 panel driver from `esp_lcd` co
The connection between ESP Board and the LCD is as follows:
```
```text
ESP Board OLED LCD (I2C)
+------------------+ +-------------------+
| GND+--------------+GND |
@@ -48,17 +48,20 @@ See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/l
```bash
...
I (0) cpu_start: Starting scheduler on APP CPU.
I (345) example: Initialize I2C bus
I (345) example: Install panel IO
I (345) example: Install SSD1306 panel driver
I (455) example: Initialize LVGL library
I (455) example: Register display driver to LVGL
I (455) example: Install LVGL tick timer
I (455) example: Display LVGL Scroll Text
I (308) main_task: Started on CPU0
I (318) main_task: Calling app_main()
I (318) example: Initialize I2C bus
I (318) gpio: GPIO[3]| InputEn: 1| OutputEn: 1| OpenDrain: 1| Pullup: 1| Pulldown: 0| Intr:0
I (328) gpio: GPIO[4]| InputEn: 1| OutputEn: 1| OpenDrain: 1| Pullup: 1| Pulldown: 0| Intr:0
I (338) example: Install panel IO
I (338) example: Install SSD1306 panel driver
I (448) example: Initialize LVGL
I (448) LVGL: Starting LVGL task
I (448) example: Display LVGL Scroll Text
I (448) main_task: Returned from app_main()
...
```
## Troubleshooting
For any technical queries, please open an [issue] (https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.

43
examples/peripherals/lcd/i2c_oled/main/i2c_oled_example_main.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
@@ -7,14 +7,13 @@
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_timer.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_ops.h"
#include "driver/i2c.h"
#include "esp_err.h"
#include "esp_log.h"
#include "lvgl.h"
#include "driver/i2c_master.h"
#include "esp_lvgl_port.h"
#include "lvgl.h"
#if CONFIG_EXAMPLE_LCD_CONTROLLER_SH1107
#include "esp_lcd_sh1107.h"
@@ -24,7 +23,7 @@
static const char *TAG = "example";
#define I2C_HOST 0
#define I2C_BUS_PORT 0
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////// Please update the following configuration according to your LCD spec //////////////////////////////
@@ -49,34 +48,25 @@ static const char *TAG = "example";
extern void example_lvgl_demo_ui(lv_disp_t *disp);
/* The LVGL port component calls esp_lcd_panel_draw_bitmap API for send data to the screen. There must be called
lvgl_port_flush_ready(disp) after each transaction to display. The best way is to use on_color_trans_done
callback from esp_lcd IO config structure. In IDF 5.1 and higher, it is solved inside LVGL port component. */
static bool notify_lvgl_flush_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
{
lv_disp_t * disp = (lv_disp_t *)user_ctx;
lvgl_port_flush_ready(disp);
return false;
}
void app_main(void)
{
ESP_LOGI(TAG, "Initialize I2C bus");
i2c_config_t i2c_conf = {
.mode = I2C_MODE_MASTER,
i2c_master_bus_handle_t i2c_bus = NULL;
i2c_master_bus_config_t bus_config = {
.clk_source = I2C_CLK_SRC_DEFAULT,
.glitch_ignore_cnt = 7,
.i2c_port = I2C_BUS_PORT,
.sda_io_num = EXAMPLE_PIN_NUM_SDA,
.scl_io_num = EXAMPLE_PIN_NUM_SCL,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
.flags.enable_internal_pullup = true,
};
ESP_ERROR_CHECK(i2c_param_config(I2C_HOST, &i2c_conf));
ESP_ERROR_CHECK(i2c_driver_install(I2C_HOST, I2C_MODE_MASTER, 0, 0, 0));
ESP_ERROR_CHECK(i2c_new_master_bus(&bus_config, &i2c_bus));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_i2c_config_t io_config = {
.dev_addr = EXAMPLE_I2C_HW_ADDR,
.scl_speed_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
.control_phase_bytes = 1, // According to SSD1306 datasheet
.lcd_cmd_bits = EXAMPLE_LCD_CMD_BITS, // According to SSD1306 datasheet
.lcd_param_bits = EXAMPLE_LCD_CMD_BITS, // According to SSD1306 datasheet
@@ -90,7 +80,7 @@ void app_main(void)
}
#endif
};
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)I2C_HOST, &io_config, &io_handle));
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c(i2c_bus, &io_config, &io_handle));
ESP_LOGI(TAG, "Install SSD1306 panel driver");
esp_lcd_panel_handle_t panel_handle = NULL;
@@ -130,12 +120,7 @@ void app_main(void)
.mirror_y = false,
}
};
lv_disp_t * disp = lvgl_port_add_disp(&disp_cfg);
/* Register done callback for IO */
const esp_lcd_panel_io_callbacks_t cbs = {
.on_color_trans_done = notify_lvgl_flush_ready,
};
esp_lcd_panel_io_register_event_callbacks(io_handle, &cbs, disp);
lv_disp_t *disp = lvgl_port_add_disp(&disp_cfg);
/* Rotation of the screen */
lv_disp_set_rotation(disp, LV_DISP_ROT_NONE);

1
examples/peripherals/lcd/i2c_oled/main/idf_component.yml
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@@ -1,5 +1,4 @@
dependencies:
idf: ">=4.4"
lvgl/lvgl: "~8.3.0"
esp_lcd_sh1107: "^1"
esp_lvgl_port: "^1"