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Merge branch 'contrib/github_pr_9311' into 'master'

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Expand lcd/i80_controller example to support ILI9341 display (GitHub PR)

Closes IDFGH-7775

See merge request espressif/esp-idf!18937
This commit is contained in:
morris 2022-07-08 15:40:33 +08:00
commit 35f755438b
3 changed files with 36 additions and 4 deletions
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2
examples/peripherals/lcd/i80_controller/README.md
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@ -19,7 +19,7 @@ This example uses the [esp_timer](https://docs.espressif.com/projects/esp-idf/en
### Hardware Required
* An ESP development board
* An Intel 8080 interfaced (so called MCU interface or parallel interface) LCD (this example can use ST7789 or NT35510)
* An Intel 8080 interfaced (so called MCU interface or parallel interface) LCD (this example can use ST7789, NT35510 or ILI9341)
* An USB cable for power supply and programming
### Hardware Connection

3
examples/peripherals/lcd/i80_controller/main/Kconfig.projbuild
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@ -19,6 +19,9 @@ menu "Example Configuration"
config EXAMPLE_LCD_I80_CONTROLLER_NT35510
bool "NT35510"
config EXAMPLE_LCD_I80_CONTROLLER_ILI9341
bool "ILI9341"
endchoice
if EXAMPLE_LCD_I80_CONTROLLER_NT35510

33
examples/peripherals/lcd/i80_controller/main/i80_controller_example_main.c
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@ -64,6 +64,9 @@ static const char *TAG = "example";
#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_NT35510
#define EXAMPLE_LCD_CMD_BITS 16
#define EXAMPLE_LCD_PARAM_BITS 16
#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ILI9341
#define EXAMPLE_LCD_CMD_BITS 8
#define EXAMPLE_LCD_PARAM_BITS 8
#endif
#define EXAMPLE_LVGL_TICK_PERIOD_MS 2
@ -153,6 +156,9 @@ void app_main(void)
.dc_dummy_level = 0,
.dc_data_level = 1,
},
.flags = {
.swap_color_bytes = !LV_COLOR_16_SWAP, // Swap can be done in LvGL (default) or DMA
},
.on_color_trans_done = example_notify_lvgl_flush_ready,
.user_ctx = &disp_drv,
.lcd_cmd_bits = EXAMPLE_LCD_CMD_BITS,
@ -177,19 +183,42 @@ void app_main(void)
.bits_per_pixel = 16,
};
ESP_ERROR_CHECK(esp_lcd_new_panel_nt35510(io_handle, &panel_config, &panel_handle));
#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ILI9341
// ILI9341 is NOT a distinct driver, but a special case of ST7789
// (essential registers are identical). A few lines further down in this code,
// it's shown how to issue additional device-specific commands.
ESP_LOGI(TAG, "Install LCD driver of ili9341 (st7789 compatible)");
esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = EXAMPLE_PIN_NUM_RST,
.color_space = ESP_LCD_COLOR_SPACE_BGR,
.bits_per_pixel = 16,
};
ESP_ERROR_CHECK(esp_lcd_new_panel_st7789(io_handle, &panel_config, &panel_handle));
#endif
esp_lcd_panel_reset(panel_handle);
esp_lcd_panel_init(panel_handle);
// Set inversion, x/y coordinate order, x/y mirror according to your LCD module spec
// the gap is LCD panel specific, even panels with the same driver IC, can have different gap value
#if CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ST7789
esp_lcd_panel_invert_color(panel_handle, true);
esp_lcd_panel_set_gap(panel_handle, 0, 20);
#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_NT35510
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, true, false);
#elif CONFIG_EXAMPLE_LCD_I80_CONTROLLER_ILI9341
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_invert_color(panel_handle, false);
// ILI9341 is very similar to ST7789 and shares the same driver.
// Anything unconventional (such as this custom gamma table) can
// be issued here in user code and need not modify the driver.
esp_lcd_panel_io_tx_param(io_handle, 0xF2, (uint8_t[]) { 0 }, 1); // 3Gamma function disable
esp_lcd_panel_io_tx_param(io_handle, 0x26, (uint8_t[]) { 1 }, 1); // Gamma curve 1 selected
esp_lcd_panel_io_tx_param(io_handle, 0xE0, (uint8_t[]) { // Set positive gamma
0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00 }, 15);
esp_lcd_panel_io_tx_param(io_handle, 0xE1, (uint8_t[]) { // Set negative gamma
0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F }, 15);
#endif
// the gap is LCD panel specific, even panels with the same driver IC, can have different gap value
esp_lcd_panel_set_gap(panel_handle, 0, 20);
// user can flush pre-defined pattern to the screen before we turn on the screen or backlight
ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));