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add some code

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苏雨洛
2025-09-05 13:25:11 +08:00
parent 9ff0a99e7a
commit 3cf1229a85
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managed_components/espressif__esp_lcd_st7796/.component_hash Normal file
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00ab2872c56a4037e6d1efda104ef0da00c5296865f8f938cc7cc2fc3e99f962

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managed_components/espressif__esp_lcd_st7796/CHECKSUMS.json Normal file
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managed_components/espressif__esp_lcd_st7796/CMakeLists.txt Normal file
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set(srcs "esp_lcd_st7796.c"
"esp_lcd_st7796_general.c")
if(CONFIG_SOC_MIPI_DSI_SUPPORTED)
list(APPEND srcs "esp_lcd_st7796_mipi.c")
endif()
idf_component_register(SRCS ${srcs}
INCLUDE_DIRS "include"
PRIV_INCLUDE_DIRS "priv_include"
REQUIRES "esp_lcd"
PRIV_REQUIRES "driver")
include(package_manager)
cu_pkg_define_version(${CMAKE_CURRENT_LIST_DIR})

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managed_components/espressif__esp_lcd_st7796/README.md Normal file
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# ESP LCD ST7796
[![Component Registry](https://components.espressif.com/components/espressif/esp_lcd_st7796/badge.svg)](https://components.espressif.com/components/espressif/esp_lcd_st7796)
Implementation of the ST7796 LCD controller with esp_lcd component.
| LCD controller | Communication interface | Component name | Link to datasheet |
| :------------: | :---------------------: | :------------: | :---------------: |
| ST7796 | SPI/I80/MIPI-DSI | esp_lcd_st7796 | [Specification](https://www.displayfuture.com/Display/datasheet/controller/ST7796s.pdf) |
## Add to project
Packages from this repository are uploaded to [Espressif's component service](https://components.espressif.com/).
You can add them to your project via `idf.py add-dependency`, e.g.
```bash
compote manifest add-dependency espressif/esp_lcd_st7796==1.0.0
```
Alternatively, you can create `idf_component.yml`. More is in [Espressif's documentation](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-component-manager.html).
## Initialization Code
### I80 interface
```c
ESP_LOGI(TAG, "Initialize Intel 8080 bus");
esp_lcd_i80_bus_handle_t i80_bus = NULL;
esp_lcd_i80_bus_config_t bus_config = ST7796_PANEL_BUS_I80_CONFIG(
EXAMPLE_LCD_H_RES * EXAMPLE_LCD_V_RES * EXAMPLE_LCD_BIT_PER_PIXEL / 8, EXAMPLE_LCD_DATA_WIDTH,
EXAMPLE_PIN_NUM_LCD_DC, EXAMPLE_PIN_NUM_LCD_WR,
EXAMPLE_PIN_NUM_LCD_DATA0, EXAMPLE_PIN_NUM_LCD_DATA1, EXAMPLE_PIN_NUM_LCD_DATA2, EXAMPLE_PIN_NUM_LCD_DATA3,
EXAMPLE_PIN_NUM_LCD_DATA4, EXAMPLE_PIN_NUM_LCD_DATA5, EXAMPLE_PIN_NUM_LCD_DATA6, EXAMPLE_PIN_NUM_LCD_DATA7,
EXAMPLE_PIN_NUM_LCD_DATA8, EXAMPLE_PIN_NUM_LCD_DATA9, EXAMPLE_PIN_NUM_LCD_DATA10, EXAMPLE_PIN_NUM_LCD_DATA11,
EXAMPLE_PIN_NUM_LCD_DATA12, EXAMPLE_PIN_NUM_LCD_DATA13, EXAMPLE_PIN_NUM_LCD_DATA14, EXAMPLE_PIN_NUM_LCD_DATA15);
ESP_ERROR_CHECK(esp_lcd_new_i80_bus(&bus_config, &i80_bus));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_i80_config_t io_config = ST7796_PANEL_IO_I80_CONFIG(EXAMPLE_PIN_NUM_LCD_CS, example_callback, &example_callback_ctx);
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, &io_handle));
/**
* Uncomment these lines if use custom initialization commands.
* The array should be declared as "static const" and positioned outside the function.
*/
// static const st7796_lcd_init_cmd_t lcd_init_cmds[] = {
// // {cmd, { data }, data_size, delay_ms}
// {0xf0, (uint8_t []){0xc3}, 1, 0},
// {0xf0, (uint8_t []){0x96}, 1, 0},
// {0xb4, (uint8_t []){0x01}, 1, 0},
// ...
// };
ESP_LOGI(TAG, "Install ST7796 panel driver");
esp_lcd_panel_handle_t panel_handle = NULL;
// st7796_vendor_config_t vendor_config = { // Uncomment these lines if use custom initialization commands
// .init_cmds = lcd_init_cmds,
// .init_cmds_size = sizeof(lcd_init_cmds) / sizeof(st7796_lcd_init_cmd_t),
// };
const esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = EXAMPLE_PIN_NUM_LCD_RST, // Set to -1 if not use
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0) // Implemented by LCD command `36h`
.color_space = ESP_LCD_COLOR_SPACE_RGB,
#else
.rgb_endian = LCD_RGB_ENDIAN_RGB,
#endif
.bits_per_pixel = EXAMPLE_LCD_BIT_PER_PIXEL, // Implemented by LCD command `3Ah` (16/18/24)
// .vendor_config = &vendor_config, // Uncomment this line if use custom initialization commands
};
ESP_ERROR_CHECK(esp_lcd_new_panel_st7796(io_handle, &panel_config, &panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
ESP_ERROR_CHECK(esp_lcd_panel_disp_off(panel_handle, false));
#else
ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));
#endif
```
### MIPI Interface
```c
/**
* Uncomment these line if use custom initialization commands.
* The array should be declared as static const and positioned outside the function.
*/
// static const st7796_lcd_init_cmd_t lcd_init_cmds[] = {
// // cmd data data_size delay_ms
// {0xFF, (uint8_t []){0x77, 0x01, 0x00, 0x00, 0x13}, 5, 0},
// {0xEF, (uint8_t []){0x08}, 1, 0},
// {0xFF, (uint8_t []){0x77, 0x01, 0x00, 0x00, 0x10}, 5, 0},
// {0xC0, (uint8_t []){0x3B, 0x00}, 2, 0},
// ...
// };
ESP_LOGI(TAG, "MIPI DSI PHY Powered on");
esp_ldo_channel_config_t ldo_mipi_phy_config = {
.chan_id = EXAMPLE_MIPI_DSI_PHY_PWR_LDO_CHAN,
.voltage_mv = EXAMPLE_MIPI_DSI_PHY_PWR_LDO_VOLTAGE_MV,
};
ESP_ERROR_CHECK(esp_ldo_acquire_channel(&ldo_mipi_phy_config, &ldo_mipi_phy));
ESP_LOGI(TAG, "Initialize MIPI DSI bus");
esp_lcd_dsi_bus_config_t bus_config = ST7796_PANEL_BUS_DSI_1CH_CONFIG();
ESP_ERROR_CHECK(esp_lcd_new_dsi_bus(&bus_config, &mipi_dsi_bus));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_dbi_io_config_t dbi_config = ST7796_PANEL_IO_DBI_CONFIG();
ESP_ERROR_CHECK(esp_lcd_new_panel_io_dbi(mipi_dsi_bus, &dbi_config, &mipi_dbi_io));
ESP_LOGI(TAG, "Install LCD driver of st7796");
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_dpi_panel_config_t dpi_config = ST7796_320_480_PANEL_60HZ_DPI_CONFIG(EXAMPLE_MIPI_DPI_PX_FORMAT);
st7796_vendor_config_t vendor_config = {
// .init_cmds = lcd_init_cmds, // Uncomment these line if use custom initialization commands
// .init_cmds_size = sizeof(lcd_init_cmds) / sizeof(st7796_lcd_init_cmd_t),
.flags.use_mipi_interface = 1,
.mipi_config = {
.dsi_bus = mipi_dsi_bus,
.dpi_config = &dpi_config,
},
};
const esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = EXAMPLE_PIN_NUM_LCD_RST,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
.bits_per_pixel = EXAMPLE_LCD_BIT_PER_PIXEL,
.vendor_config = &vendor_config,
};
ESP_ERROR_CHECK(esp_lcd_new_panel_st7796(mipi_dbi_io, &panel_config, &panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));
```

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managed_components/espressif__esp_lcd_st7796/esp_lcd_st7796.c Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "soc/soc_caps.h"
#include "esp_check.h"
#include "esp_lcd_types.h"
#include "esp_lcd_st7796.h"
#include "esp_lcd_st7796_interface.h"
static const char *TAG = "st7796";
esp_err_t esp_lcd_new_panel_st7796(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config,
esp_lcd_panel_handle_t *ret_panel)
{
ESP_LOGI(TAG, "version: %d.%d.%d", ESP_LCD_ST7796_VER_MAJOR, ESP_LCD_ST7796_VER_MINOR, ESP_LCD_ST7796_VER_PATCH);
ESP_RETURN_ON_FALSE(panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, TAG, "Invalid arguments");
st7796_vendor_config_t *vendor_config = (st7796_vendor_config_t *)panel_dev_config->vendor_config;
esp_err_t ret = ESP_ERR_NOT_SUPPORTED;
if (vendor_config && vendor_config->flags.use_mipi_interface) {
#if SOC_MIPI_DSI_SUPPORTED
ret = esp_lcd_new_panel_st7796_mipi(io, panel_dev_config, ret_panel);
#else
ESP_LOGE(TAG, "The chip does not support MIPI-DSI interface");
#endif
} else {
ret = esp_lcd_new_panel_st7796_general(io, panel_dev_config, ret_panel);
}
return ret;
}

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managed_components/espressif__esp_lcd_st7796/esp_lcd_st7796_general.c Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <sys/cdefs.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_lcd_panel_interface.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_commands.h"
#include "driver/gpio.h"
#include "esp_log.h"
#include "esp_check.h"
#include "esp_lcd_st7796.h"
#include "esp_lcd_st7796_interface.h"
static const char *TAG = "st7796_general";
static esp_err_t panel_st7796_del(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_reset(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_init(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int y_start, int x_end, int y_end, const void *color_data);
static esp_err_t panel_st7796_invert_color(esp_lcd_panel_t *panel, bool invert_color_data);
static esp_err_t panel_st7796_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y);
static esp_err_t panel_st7796_swap_xy(esp_lcd_panel_t *panel, bool swap_axes);
static esp_err_t panel_st7796_set_gap(esp_lcd_panel_t *panel, int x_gap, int y_gap);
static esp_err_t panel_st7796_disp_on_off(esp_lcd_panel_t *panel, bool off);
typedef struct {
esp_lcd_panel_t base;
esp_lcd_panel_io_handle_t io;
int reset_gpio_num;
bool reset_level;
int x_gap;
int y_gap;
uint8_t fb_bits_per_pixel;
uint8_t madctl_val; // save current value of LCD_CMD_MADCTL register
uint8_t colmod_val; // save current value of LCD_CMD_COLMOD register
const st7796_lcd_init_cmd_t *init_cmds;
uint16_t init_cmds_size;
} st7796_panel_t;
esp_err_t esp_lcd_new_panel_st7796_general(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config, esp_lcd_panel_handle_t *ret_panel)
{
esp_err_t ret = ESP_OK;
st7796_panel_t *st7796 = NULL;
gpio_config_t io_conf = { 0 };
ESP_GOTO_ON_FALSE(io && panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
st7796 = (st7796_panel_t *)calloc(1, sizeof(st7796_panel_t));
ESP_GOTO_ON_FALSE(st7796, ESP_ERR_NO_MEM, err, TAG, "no mem for st7796 panel");
if (panel_dev_config->reset_gpio_num >= 0) {
io_conf.mode = GPIO_MODE_OUTPUT;
io_conf.pin_bit_mask = 1ULL << panel_dev_config->reset_gpio_num;
ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for RST line failed");
}
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
switch (panel_dev_config->color_space) {
case ESP_LCD_COLOR_SPACE_RGB:
st7796->madctl_val = 0;
break;
case ESP_LCD_COLOR_SPACE_BGR:
st7796->madctl_val |= LCD_CMD_BGR_BIT;
break;
default:
ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported color space");
break;
}
#else
switch (panel_dev_config->rgb_endian) {
case LCD_RGB_ENDIAN_RGB:
st7796->madctl_val = 0;
break;
case LCD_RGB_ENDIAN_BGR:
st7796->madctl_val |= LCD_CMD_BGR_BIT;
break;
default:
ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported rgb endian");
break;
}
#endif
switch (panel_dev_config->bits_per_pixel) {
case 16: // RGB565
st7796->colmod_val = 0x05;
st7796->fb_bits_per_pixel = 16;
break;
case 18: // RGB666
st7796->colmod_val = 0x06;
// each color component (R/G/B) should occupy the 6 high bits of a byte, which means 3 full bytes are required for a pixel
st7796->fb_bits_per_pixel = 24;
break;
case 24: // RGB888
st7796->colmod_val = 0x07;
st7796->fb_bits_per_pixel = 24;
break;
default:
ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported pixel width");
break;
}
st7796->io = io;
st7796->reset_gpio_num = panel_dev_config->reset_gpio_num;
st7796->reset_level = panel_dev_config->flags.reset_active_high;
if (panel_dev_config->vendor_config) {
st7796->init_cmds = ((st7796_vendor_config_t *)panel_dev_config->vendor_config)->init_cmds;
st7796->init_cmds_size = ((st7796_vendor_config_t *)panel_dev_config->vendor_config)->init_cmds_size;
}
st7796->base.del = panel_st7796_del;
st7796->base.reset = panel_st7796_reset;
st7796->base.init = panel_st7796_init;
st7796->base.draw_bitmap = panel_st7796_draw_bitmap;
st7796->base.invert_color = panel_st7796_invert_color;
st7796->base.set_gap = panel_st7796_set_gap;
st7796->base.mirror = panel_st7796_mirror;
st7796->base.swap_xy = panel_st7796_swap_xy;
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
st7796->base.disp_off = panel_st7796_disp_on_off;
#else
st7796->base.disp_on_off = panel_st7796_disp_on_off;
#endif
*ret_panel = &(st7796->base);
ESP_LOGD(TAG, "new st7796 panel @%p", st7796);
ESP_LOGI(TAG, "LCD panel create success, version: %d.%d.%d", ESP_LCD_ST7796_VER_MAJOR, ESP_LCD_ST7796_VER_MINOR,
ESP_LCD_ST7796_VER_PATCH);
return ESP_OK;
err:
if (st7796) {
if (panel_dev_config->reset_gpio_num >= 0) {
gpio_reset_pin(panel_dev_config->reset_gpio_num);
}
free(st7796);
}
return ret;
}
static esp_err_t panel_st7796_del(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
if (st7796->reset_gpio_num >= 0) {
gpio_reset_pin(st7796->reset_gpio_num);
}
ESP_LOGD(TAG, "del st7796 panel @%p", st7796);
free(st7796);
return ESP_OK;
}
static esp_err_t panel_st7796_reset(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
// perform hardware reset
if (st7796->reset_gpio_num >= 0) {
gpio_set_level(st7796->reset_gpio_num, st7796->reset_level);
vTaskDelay(pdMS_TO_TICKS(10));
gpio_set_level(st7796->reset_gpio_num, !st7796->reset_level);
vTaskDelay(pdMS_TO_TICKS(120));
} else { // perform software reset
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_SWRESET, NULL, 0), TAG, "send command failed");
vTaskDelay(pdMS_TO_TICKS(120)); // spec, wait at least 5ms before sending new command
}
return ESP_OK;
}
static const st7796_lcd_init_cmd_t vendor_specific_init_default[] = {
// {cmd, { data }, data_size, delay_ms}
{0xf0, (uint8_t []){0xc3}, 1, 0},
{0xf0, (uint8_t []){0x96}, 1, 0},
{0xb4, (uint8_t []){0x01}, 1, 0},
{0xb7, (uint8_t []){0xc6}, 1, 0},
{0xe8, (uint8_t []){0x40, 0x8a, 0x00, 0x00, 0x29, 0x19, 0xa5, 0x33}, 8, 0},
{0xc1, (uint8_t []){0x06}, 1, 0},
{0xc2, (uint8_t []){0xa7}, 1, 0},
{0xc5, (uint8_t []){0x18}, 1, 0},
{0xe0, (uint8_t []){0xf0, 0x09, 0x0b, 0x06, 0x04, 0x15, 0x2f, 0x54, 0x42, 0x3c, 0x17, 0x14, 0x18, 0x1b}, 14, 0},
{0xe1, (uint8_t []){0xf0, 0x09, 0x0b, 0x06, 0x04, 0x03, 0x2d, 0x43, 0x42, 0x3b, 0x16, 0x14, 0x17, 0x1b}, 14, 0},
{0xf0, (uint8_t []){0x3c}, 1, 0},
{0xf0, (uint8_t []){0x69}, 1, 0},
};
static esp_err_t panel_st7796_init(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
// LCD goes into sleep mode and display will be turned off after power on reset, exit sleep mode first
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_SLPOUT, NULL, 0), TAG, "send command failed");
vTaskDelay(pdMS_TO_TICKS(100));
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
st7796->madctl_val,
}, 1), TAG, "send command failed");
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_COLMOD, (uint8_t[]) {
st7796->colmod_val,
}, 1), TAG, "send command failed");
const st7796_lcd_init_cmd_t *init_cmds = NULL;
uint16_t init_cmds_size = 0;
if (st7796->init_cmds) {
init_cmds = st7796->init_cmds;
init_cmds_size = st7796->init_cmds_size;
} else {
init_cmds = vendor_specific_init_default;
init_cmds_size = sizeof(vendor_specific_init_default) / sizeof(st7796_lcd_init_cmd_t);
}
bool is_cmd_overwritten = false;
for (int i = 0; i < init_cmds_size; i++) {
// Check if the command has been used or conflicts with the internal
switch (init_cmds[i].cmd) {
case LCD_CMD_MADCTL:
is_cmd_overwritten = true;
st7796->madctl_val = ((uint8_t *)init_cmds[i].data)[0];
break;
case LCD_CMD_COLMOD:
is_cmd_overwritten = true;
st7796->colmod_val = ((uint8_t *)init_cmds[i].data)[0];
break;
default:
is_cmd_overwritten = false;
break;
}
if (is_cmd_overwritten) {
ESP_LOGW(TAG, "The %02Xh command has been used and will be overwritten by external initialization sequence", init_cmds[i].cmd);
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, init_cmds[i].cmd, init_cmds[i].data, init_cmds[i].data_bytes), TAG, "send command failed");
vTaskDelay(pdMS_TO_TICKS(init_cmds[i].delay_ms));
}
ESP_LOGD(TAG, "send init commands success");
return ESP_OK;
}
static esp_err_t panel_st7796_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int y_start, int x_end, int y_end, const void *color_data)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
assert((x_start < x_end) && (y_start < y_end) && "start position must be smaller than end position");
esp_lcd_panel_io_handle_t io = st7796->io;
x_start += st7796->x_gap;
x_end += st7796->x_gap;
y_start += st7796->y_gap;
y_end += st7796->y_gap;
// define an area of frame memory where MCU can access
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_CASET, (uint8_t[]) {
(x_start >> 8) & 0xFF,
x_start & 0xFF,
((x_end - 1) >> 8) & 0xFF,
(x_end - 1) & 0xFF,
}, 4), TAG, "send command failed");
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_RASET, (uint8_t[]) {
(y_start >> 8) & 0xFF,
y_start & 0xFF,
((y_end - 1) >> 8) & 0xFF,
(y_end - 1) & 0xFF,
}, 4), TAG, "send command failed");
// transfer frame buffer
size_t len = (x_end - x_start) * (y_end - y_start) * st7796->fb_bits_per_pixel / 8;
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_color(io, LCD_CMD_RAMWR, color_data, len), TAG, "send command failed");
return ESP_OK;
}
static esp_err_t panel_st7796_invert_color(esp_lcd_panel_t *panel, bool invert_color_data)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
int command = 0;
if (invert_color_data) {
command = LCD_CMD_INVON;
} else {
command = LCD_CMD_INVOFF;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");
return ESP_OK;
}
static esp_err_t panel_st7796_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
if (mirror_x) {
st7796->madctl_val |= LCD_CMD_MX_BIT;
} else {
st7796->madctl_val &= ~LCD_CMD_MX_BIT;
}
if (mirror_y) {
st7796->madctl_val |= LCD_CMD_MY_BIT;
} else {
st7796->madctl_val &= ~LCD_CMD_MY_BIT;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
st7796->madctl_val
}, 1), TAG, "send command failed");
return ESP_OK;
}
static esp_err_t panel_st7796_swap_xy(esp_lcd_panel_t *panel, bool swap_axes)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
if (swap_axes) {
st7796->madctl_val |= LCD_CMD_MV_BIT;
} else {
st7796->madctl_val &= ~LCD_CMD_MV_BIT;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
st7796->madctl_val
}, 1), TAG, "send command failed");
return ESP_OK;
}
static esp_err_t panel_st7796_set_gap(esp_lcd_panel_t *panel, int x_gap, int y_gap)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
st7796->x_gap = x_gap;
st7796->y_gap = y_gap;
return ESP_OK;
}
static esp_err_t panel_st7796_disp_on_off(esp_lcd_panel_t *panel, bool on_off)
{
st7796_panel_t *st7796 = __containerof(panel, st7796_panel_t, base);
esp_lcd_panel_io_handle_t io = st7796->io;
int command = 0;
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
on_off = !on_off;
#endif
if (on_off) {
command = LCD_CMD_DISPON;
} else {
command = LCD_CMD_DISPOFF;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");
return ESP_OK;
}

296
managed_components/espressif__esp_lcd_st7796/esp_lcd_st7796_mipi.c Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "soc/soc_caps.h"
#if SOC_MIPI_DSI_SUPPORTED
#include "esp_check.h"
#include "esp_log.h"
#include "esp_lcd_panel_commands.h"
#include "esp_lcd_panel_interface.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_mipi_dsi.h"
#include "esp_lcd_panel_vendor.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_lcd_st7796.h"
#include "esp_lcd_st7796_interface.h"
typedef struct {
esp_lcd_panel_io_handle_t io;
int reset_gpio_num;
uint8_t madctl_val; // save current value of LCD_CMD_MADCTL register
uint8_t colmod_val; // save surrent value of LCD_CMD_COLMOD register
const st7796_lcd_init_cmd_t *init_cmds;
uint16_t init_cmds_size;
struct {
unsigned int reset_level: 1;
} flags;
// To save the original functions of MIPI DPI panel
esp_err_t (*del)(esp_lcd_panel_t *panel);
esp_err_t (*init)(esp_lcd_panel_t *panel);
} st7796_panel_t;
static const char *TAG = "st7796_mipi";
static esp_err_t panel_st7796_del(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_init(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_reset(esp_lcd_panel_t *panel);
static esp_err_t panel_st7796_invert_color(esp_lcd_panel_t *panel, bool invert_color_data);
static esp_err_t panel_st7796_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y);
static esp_err_t panel_st7796_disp_on_off(esp_lcd_panel_t *panel, bool on_off);
esp_err_t esp_lcd_new_panel_st7796_mipi(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config,
esp_lcd_panel_handle_t *ret_panel)
{
ESP_RETURN_ON_FALSE(io && panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, TAG, "invalid arguments");
st7796_vendor_config_t *vendor_config = (st7796_vendor_config_t *)panel_dev_config->vendor_config;
ESP_RETURN_ON_FALSE(vendor_config && vendor_config->mipi_config.dpi_config && vendor_config->mipi_config.dsi_bus, ESP_ERR_INVALID_ARG, TAG,
"invalid vendor config");
esp_err_t ret = ESP_OK;
st7796_panel_t *st7796 = (st7796_panel_t *)calloc(1, sizeof(st7796_panel_t));
ESP_RETURN_ON_FALSE(st7796, ESP_ERR_NO_MEM, TAG, "no mem for st7796 panel");
if (panel_dev_config->reset_gpio_num >= 0) {
gpio_config_t io_conf = {
.mode = GPIO_MODE_OUTPUT,
.pin_bit_mask = 1ULL << panel_dev_config->reset_gpio_num,
};
ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for RST line failed");
}
switch (panel_dev_config->color_space) {
case LCD_RGB_ELEMENT_ORDER_RGB:
st7796->madctl_val = 0;
break;
case LCD_RGB_ELEMENT_ORDER_BGR:
st7796->madctl_val |= LCD_CMD_BGR_BIT;
break;
default:
ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported color space");
break;
}
switch (panel_dev_config->bits_per_pixel) {
case 16: // RGB565
st7796->colmod_val = 0x55;
break;
case 18: // RGB666
st7796->colmod_val = 0x66;
break;
case 24: // RGB888
st7796->colmod_val = 0x77;
break;
default:
ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported pixel width");
break;
}
st7796->io = io;
st7796->init_cmds = vendor_config->init_cmds;
st7796->init_cmds_size = vendor_config->init_cmds_size;
st7796->reset_gpio_num = panel_dev_config->reset_gpio_num;
st7796->flags.reset_level = panel_dev_config->flags.reset_active_high;
// Create MIPI DPI panel
esp_lcd_panel_handle_t panel_handle = NULL;
ESP_GOTO_ON_ERROR(esp_lcd_new_panel_dpi(vendor_config->mipi_config.dsi_bus, vendor_config->mipi_config.dpi_config, &panel_handle), err, TAG,
"create MIPI DPI panel failed");
ESP_LOGD(TAG, "new MIPI DPI panel @%p", panel_handle);
// Save the original functions of MIPI DPI panel
st7796->del = panel_handle->del;
st7796->init = panel_handle->init;
// Overwrite the functions of MIPI DPI panel
panel_handle->del = panel_st7796_del;
panel_handle->init = panel_st7796_init;
panel_handle->reset = panel_st7796_reset;
panel_handle->mirror = panel_st7796_mirror;
panel_handle->invert_color = panel_st7796_invert_color;
panel_handle->disp_on_off = panel_st7796_disp_on_off;
panel_handle->user_data = st7796;
*ret_panel = panel_handle;
ESP_LOGD(TAG, "new st7796 panel @%p", st7796);
ESP_LOGI(TAG, "LCD panel create success, version: %d.%d.%d", ESP_LCD_ST7796_VER_MAJOR, ESP_LCD_ST7796_VER_MINOR,
ESP_LCD_ST7796_VER_PATCH);
return ESP_OK;
err:
if (st7796) {
if (panel_dev_config->reset_gpio_num >= 0) {
gpio_reset_pin(panel_dev_config->reset_gpio_num);
}
free(st7796);
}
return ret;
}
static const st7796_lcd_init_cmd_t vendor_specific_init_default[] = {
// {cmd, { data }, data_size, delay_ms}
{0x11, (uint8_t []){0x00}, 0, 120},
{0x36, (uint8_t []){0x48}, 1, 0},
{0x3A, (uint8_t []){0x77}, 1, 0},
{0xF0, (uint8_t []){0xC3}, 1, 0},
{0xF0, (uint8_t []){0x96}, 1, 0},
{0xB4, (uint8_t []){0x02}, 1, 0},
{0xB7, (uint8_t []){0xC6}, 1, 0},
{0xB6, (uint8_t []){0x2F}, 1, 0},
{0x11, (uint8_t []){0xC0, 0xF0, 0x35}, 3, 0},
{0xC1, (uint8_t []){0x15}, 1, 0},
{0xC2, (uint8_t []){0xAF}, 1, 0},
{0xC3, (uint8_t []){0x09}, 1, 0},
{0xC5, (uint8_t []){0x22}, 1, 0},
{0xC6, (uint8_t []){0x00}, 1, 0},
{0x11, (uint8_t []){0xE8, 0x40, 0x8A, 0x00, 0x00, 0x29, 0x19, 0xA5, 0x33}, 9, 0},
{0x11, (uint8_t []){0xE0, 0x70, 0x00, 0x05, 0x03, 0x02, 0x20, 0x29, 0x01, 0x45, 0x30, 0x09, 0x07, 0x22, 0x29}, 15, 0},
{0x11, (uint8_t []){0xE1, 0x70, 0x0C, 0x10, 0x0F, 0x0E, 0x09, 0x35, 0x64, 0x48, 0x3A, 0x14, 0x13, 0x2E, 0x30}, 15, 0},
{0x11, (uint8_t []){0xE0, 0x70, 0x04, 0x0A, 0x0B, 0x0A, 0x27, 0x31, 0x55, 0x47, 0x29, 0x13, 0x13, 0x29, 0x2D}, 15, 0},
{0x11, (uint8_t []){0xE1, 0x70, 0x08, 0x0E, 0x09, 0x08, 0x04, 0x33, 0x32, 0x49, 0x36, 0x14, 0x14, 0x2A, 0x2F}, 15, 0},
{0x21, (uint8_t []){0x00}, 0, 0},
{0xF0, (uint8_t []){0xC3}, 1, 0},
{0xF0, (uint8_t []){0x96}, 1, 120},
{0xF0, (uint8_t []){0xC3}, 1, 0},
{0x29, (uint8_t []){0x00}, 0, 0},
{0x2C, (uint8_t []){0x00}, 0, 0},
//============ Gamma END===========
};
static esp_err_t panel_st7796_del(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
if (st7796->reset_gpio_num >= 0) {
gpio_reset_pin(st7796->reset_gpio_num);
}
// Delete MIPI DPI panel
st7796->del(panel);
ESP_LOGD(TAG, "del st7796 panel @%p", st7796);
free(st7796);
return ESP_OK;
}
static esp_err_t panel_st7796_init(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
esp_lcd_panel_io_handle_t io = st7796->io;
const st7796_lcd_init_cmd_t *init_cmds = NULL;
uint16_t init_cmds_size = 0;
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
st7796->madctl_val,
}, 1), TAG, "send command failed");
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_COLMOD, (uint8_t[]) {
st7796->colmod_val,
}, 1), TAG, "send command failed");
// vendor specific initialization, it can be different between manufacturers
// should consult the LCD supplier for initialization sequence code
if (st7796->init_cmds) {
init_cmds = st7796->init_cmds;
init_cmds_size = st7796->init_cmds_size;
} else {
init_cmds = vendor_specific_init_default;
init_cmds_size = sizeof(vendor_specific_init_default) / sizeof(st7796_lcd_init_cmd_t);
}
for (int i = 0; i < init_cmds_size; i++) {
// Send command
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, init_cmds[i].cmd, init_cmds[i].data, init_cmds[i].data_bytes), TAG, "send command failed");
vTaskDelay(pdMS_TO_TICKS(init_cmds[i].delay_ms));
}
ESP_LOGD(TAG, "send init commands success");
ESP_RETURN_ON_ERROR(st7796->init(panel), TAG, "init MIPI DPI panel failed");
return ESP_OK;
}
static esp_err_t panel_st7796_reset(esp_lcd_panel_t *panel)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
esp_lcd_panel_io_handle_t io = st7796->io;
// Perform hardware reset
if (st7796->reset_gpio_num >= 0) {
gpio_set_level(st7796->reset_gpio_num, st7796->flags.reset_level);
vTaskDelay(pdMS_TO_TICKS(10));
gpio_set_level(st7796->reset_gpio_num, !st7796->flags.reset_level);
vTaskDelay(pdMS_TO_TICKS(120));
} else if (io) { // Perform software reset
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_SWRESET, NULL, 0), TAG, "send command failed");
vTaskDelay(pdMS_TO_TICKS(120));
}
return ESP_OK;
}
static esp_err_t panel_st7796_invert_color(esp_lcd_panel_t *panel, bool invert_color_data)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
esp_lcd_panel_io_handle_t io = st7796->io;
uint8_t command = 0;
ESP_RETURN_ON_FALSE(io, ESP_ERR_INVALID_STATE, TAG, "invalid panel IO");
if (invert_color_data) {
command = LCD_CMD_INVON;
} else {
command = LCD_CMD_INVOFF;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");
return ESP_OK;
}
static esp_err_t panel_st7796_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
esp_lcd_panel_io_handle_t io = st7796->io;
uint8_t madctl_val = st7796->madctl_val;
ESP_RETURN_ON_FALSE(io, ESP_ERR_INVALID_STATE, TAG, "invalid panel IO");
// Control mirror through LCD command
if (mirror_x) {
madctl_val |= LCD_CMD_MX_BIT;
} else {
madctl_val &= ~LCD_CMD_MX_BIT;
}
if (mirror_y) {
madctl_val |= LCD_CMD_MY_BIT;
} else {
madctl_val &= ~LCD_CMD_MY_BIT;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t []) {
madctl_val
}, 1), TAG, "send command failed");
st7796->madctl_val = madctl_val;
return ESP_OK;
}
static esp_err_t panel_st7796_disp_on_off(esp_lcd_panel_t *panel, bool on_off)
{
st7796_panel_t *st7796 = (st7796_panel_t *)panel->user_data;
esp_lcd_panel_io_handle_t io = st7796->io;
int command = 0;
if (on_off) {
command = LCD_CMD_DISPON;
} else {
command = LCD_CMD_DISPOFF;
}
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");
return ESP_OK;
}
#endif

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managed_components/espressif__esp_lcd_st7796/idf_component.yml Normal file
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dependencies:
cmake_utilities: 0.*
idf: '>=4.4'
description: ESP LCD ST7796 driver (SPI && I80 && MIPI DSI)
repository: git://github.com/espressif/esp-bsp.git
repository_info:
commit_sha: 7e5759a5dcae75624e0c7abb8d8aef6b95e33b1f
path: components/lcd/esp_lcd_st7796
targets:
- esp32
- esp32s2
- esp32s3
- esp32p4
url: https://github.com/espressif/esp-bsp/tree/master/components/lcd/esp_lcd_st7796
version: 1.3.2

206
managed_components/espressif__esp_lcd_st7796/include/esp_lcd_st7796.h Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief ESP LCD: ST7796
*/
#pragma once
#include "hal/lcd_types.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_idf_version.h"
#if SOC_MIPI_DSI_SUPPORTED
#include "esp_lcd_mipi_dsi.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief LCD panel initialization commands.
*
*/
typedef struct {
int cmd; /*<! The specific LCD command */
const void *data; /*<! Buffer that holds the command specific data */
size_t data_bytes; /*<! Size of `data` in memory, in bytes */
unsigned int delay_ms; /*<! Delay in milliseconds after this command */
} st7796_lcd_init_cmd_t;
/**
* @brief LCD panel vendor configuration.
*
* @note This structure needs to be passed to the `vendor_config` field in `esp_lcd_panel_dev_config_t`.
*
*/
typedef struct {
const st7796_lcd_init_cmd_t *init_cmds; /*!< Pointer to initialization commands array. Set to NULL if using default commands.
* The array should be declared as `static const` and positioned outside the function.
* Please refer to `vendor_specific_init_default` in source file.
*/
uint16_t init_cmds_size; /*<! Number of commands in above array */
#if SOC_MIPI_DSI_SUPPORTED
struct {
esp_lcd_dsi_bus_handle_t dsi_bus; /*!< MIPI-DSI bus configuration */
const esp_lcd_dpi_panel_config_t *dpi_config; /*!< MIPI-DPI panel configuration */
} mipi_config;
#endif
struct {
unsigned int use_mipi_interface: 1; /*<! Set to 1 if using MIPI interface, default is SPI/I80 interface */
} flags;
} st7796_vendor_config_t;
/**
* @brief Create LCD panel for model ST7796
*
* @note Vendor specific initialization can be different between manufacturers, should consult the LCD supplier for initialization sequence code.
*
* @param[in] io LCD panel IO handle
* @param[in] panel_dev_config general panel device configuration
* @param[out] ret_panel Returned LCD panel handle
* @return
* - ESP_ERR_INVALID_ARG if parameter is invalid
* - ESP_ERR_NO_MEM if out of memory
* - ESP_OK on success
*/
esp_err_t esp_lcd_new_panel_st7796(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config, esp_lcd_panel_handle_t *ret_panel);
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////// Default Configuration Macros for I80 Interface /////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* @brief LCD panel bus configuration structure
*
* @param[in] max_trans_bytes Maximum bytes of data to be transferred in one transaction. Normally set to the size of one frame bytes.
* @param[in] data_width Data bus width
* @param[in] dc I80 data/command pin number
* @param[in] wr I80 write clock pin number
* @param[in] d[0:15] I80 data pin number 0 ~ 15. Set to -1 if not used.
*
*/
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4, 4, 1)
#define ST7796_PANEL_BUS_I80_CONFIG(max_trans_bytes, data_width, dc, wr, d0, d1, d2, d3, d4, \
d5, d6, d7, d8 , d9, d10, d11, d12, d13, d14, d15) \
{ \
.clk_src = LCD_CLK_SRC_PLL160M, \
.dc_gpio_num = dc, \
.wr_gpio_num = wr, \
.data_gpio_nums = { \
d0, d1, d2, d3, d4, d5, d6, d7, d8 , d9, d10, d11, d12, d13, d14, d15 \
}, \
.bus_width = data_width, \
.max_transfer_bytes = max_trans_bytes, \
}
#else
#define ST7796_PANEL_BUS_I80_CONFIG(max_trans_bytes, data_width, dc, wr, d0, d1, d2, d3, d4, \
d5, d6, d7, d8 , d9, d10, d11, d12, d13, d14, d15) \
{ \
.clk_src = LCD_CLK_SRC_PLL160M, \
.dc_gpio_num = dc, \
.wr_gpio_num = wr, \
.data_gpio_nums = { \
d0, d1, d2, d3, d4, d5, d6, d7, d8 , d9, d10, d11, d12, d13, d14, d15 \
}, \
.bus_width = data_width, \
.max_transfer_bytes = max_trans_bytes, \
.psram_trans_align = 64, \
.sram_trans_align = 4, \
}
#endif
/**
* @brief LCD panel IO configuration structure
*
* @param[in] cs I80 chip select pin number
* @param[in] cb Callback function when data transfer is done
* @param[in] cb_ctx Callback function context
*
*/
#define ST7796_PANEL_IO_I80_CONFIG(cs, cb, cb_ctx) \
{ \
.cs_gpio_num = cs, \
.pclk_hz = 10 * 1000 * 1000, \
.trans_queue_depth = 10, \
.dc_levels = { \
.dc_idle_level = 0, \
.dc_cmd_level = 0, \
.dc_dummy_level = 0, \
.dc_data_level = 1, \
}, \
.flags = { \
.swap_color_bytes = 1, \
}, \
.on_color_trans_done = cb, \
.user_ctx = cb_ctx, \
.lcd_cmd_bits = 8, \
.lcd_param_bits = 8, \
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////// Default Configuration Macros for MIPI-DSI Interface //////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/**
* @brief MIPI-DSI bus configuration structure
*
* @param[in] lane_num Number of data lanes
* @param[in] lane_mbps Lane bit rate in Mbps
*
*/
#define ST7796_PANEL_BUS_DSI_1CH_CONFIG() \
{ \
.bus_id = 0, \
.num_data_lanes = 1, \
.phy_clk_src = MIPI_DSI_PHY_CLK_SRC_DEFAULT, \
.lane_bit_rate_mbps = 480, \
}
/**
* @brief MIPI-DBI panel IO configuration structure
*
*/
#define ST7796_PANEL_IO_DBI_CONFIG() \
{ \
.virtual_channel = 0, \
.lcd_cmd_bits = 8, \
.lcd_param_bits = 8, \
}
/**
* @brief MIPI DPI configuration structure
*
* @note refresh_rate = (dpi_clock_freq_mhz * 1000000) / (h_res + hsync_pulse_width + hsync_back_porch + hsync_front_porch)
* / (v_res + vsync_pulse_width + vsync_back_porch + vsync_front_porch)
*
* @param[in] px_format Pixel format of the panel
*
*/
#define ST7796_320_480_PANEL_60HZ_DPI_CONFIG(px_format) \
{ \
.dpi_clk_src = MIPI_DSI_DPI_CLK_SRC_DEFAULT, \
.dpi_clock_freq_mhz = 10, \
.virtual_channel = 0, \
.pixel_format = px_format, \
.num_fbs = 1, \
.video_timing = { \
.h_size = 320, \
.v_size = 480, \
.hsync_back_porch = 10, \
.hsync_pulse_width = 10, \
.hsync_front_porch = 20, \
.vsync_back_porch = 10, \
.vsync_pulse_width = 10, \
.vsync_front_porch = 10, \
}, \
.flags.use_dma2d = true, \
}
#ifdef __cplusplus
}
#endif

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managed_components/espressif__esp_lcd_st7796/priv_include/esp_lcd_st7796_interface.h Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include "esp_err.h"
#include "esp_lcd_types.h"
#include "esp_lcd_panel_vendor.h"
#include "soc/soc_caps.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initialize ST7796 LCD panel with SPI/I80 interface
*
* @param[in] io LCD panel IO handle
* @param[in] panel_dev_config LCD panel device configuration
* @param[out] ret_panel LCD panel handle
* @return
* - ESP_OK: Success
* - Otherwise: Fail
*/
esp_err_t esp_lcd_new_panel_st7796_general(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config, esp_lcd_panel_handle_t *ret_panel);
#if SOC_MIPI_DSI_SUPPORTED
/**
* @brief Initialize ST7796 LCD panel with MIPI interface
*
* @param[in] io LCD panel IO handle
* @param[in] panel_dev_config LCD panel device configuration
* @param[out] ret_panel LCD panel handle
* @return
* - ESP_OK: Success
* - Otherwise: Fail
*/
esp_err_t esp_lcd_new_panel_st7796_mipi(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config,
esp_lcd_panel_handle_t *ret_panel);
#endif
#ifdef __cplusplus
}
#endif

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# The following lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.5)
set(EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/unit-test-app/components")
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(test_esp_lcd_st7796)

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idf_component_register(SRC_DIRS "."
INCLUDE_DIRS "."
WHOLE_ARCHIVE)

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managed_components/espressif__esp_lcd_st7796/test_apps/main/idf_component.yml Normal file
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## IDF Component Manager Manifest File
dependencies:
idf: ">=4.4"
esp_lcd_st7796:
version: "*"
override_path: "../../../esp_lcd_st7796"

47
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "unity.h"
#include "unity_test_runner.h"
#include "unity_test_utils_memory.h"
#include "esp_heap_caps.h"
// Some resources are lazy allocated in the LCD driver, the threadhold is left for that case
#define TEST_MEMORY_LEAK_THRESHOLD (300)
static size_t before_free_8bit;
static size_t before_free_32bit;
void setUp(void)
{
before_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
before_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
}
void tearDown(void)
{
size_t after_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
size_t after_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
unity_utils_check_leak(before_free_8bit, after_free_8bit, "8BIT", TEST_MEMORY_LEAK_THRESHOLD);
unity_utils_check_leak(before_free_32bit, after_free_32bit, "32BIT", TEST_MEMORY_LEAK_THRESHOLD);
}
void app_main(void)
{
/**
* __ _____ _____ _____ ___ __
* / _\/__ \___ |___ / _ \ / /_
* \ \ / /\/ / / / / (_) | '_ \
* _\ \ / / / / / / \__, | (_) |
* \__/ \/ /_/ /_/ /_/ \___/
*/
printf(" __ _____ _____ _____ ___ __\r\n");
printf("/ _\\/__ \\___ |___ / _ \\ / /_\r\n");
printf("\\ \\ / /\\/ / / / / (_) | '_ \\\r\n");
printf("_\\ \\ / / / / / / \\__, | (_) |\r\n");
printf("\\__/ \\/ /_/ /_/ /_/ \\___/\r\n");
unity_run_menu();
}

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managed_components/espressif__esp_lcd_st7796/test_apps/main/test_esp_lcd_st7796_general.c Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "soc/soc_caps.h"
#if SOC_LCD_I80_SUPPORTED
#include <inttypes.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "driver/gpio.h"
#include "soc/soc_caps.h"
#include "esp_heap_caps.h"
#include "esp_log.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_io.h"
#include "unity.h"
#include "unity_test_runner.h"
#include "esp_lcd_st7796.h"
#define TEST_LCD_H_RES (320)
#define TEST_LCD_V_RES (480)
#define TEST_LCD_BIT_PER_PIXEL (16)
#define TEST_LCD_DATA_WIDTH (8)
#define TEST_PIN_NUM_LCD_CS (GPIO_NUM_17)
#define TEST_PIN_NUM_LCD_DC (GPIO_NUM_46)
#define TEST_PIN_NUM_LCD_WR (GPIO_NUM_3)
#define TEST_PIN_NUM_LCD_DATA0 (GPIO_NUM_9)
#define TEST_PIN_NUM_LCD_DATA1 (GPIO_NUM_12)
#define TEST_PIN_NUM_LCD_DATA2 (GPIO_NUM_11)
#define TEST_PIN_NUM_LCD_DATA3 (GPIO_NUM_14)
#define TEST_PIN_NUM_LCD_DATA4 (GPIO_NUM_13)
#if CONFIG_IDF_TARGET_ESP32S2
#define TEST_PIN_NUM_LCD_DATA5 (GPIO_NUM_8)
#else
#define TEST_PIN_NUM_LCD_DATA5 (GPIO_NUM_47)
#endif
#define TEST_PIN_NUM_LCD_DATA6 (GPIO_NUM_21)
#define TEST_PIN_NUM_LCD_DATA7 (GPIO_NUM_45)
#define TEST_PIN_NUM_LCD_DATA8 (-1)
#define TEST_PIN_NUM_LCD_DATA9 (-1)
#define TEST_PIN_NUM_LCD_DATA10 (-1)
#define TEST_PIN_NUM_LCD_DATA11 (-1)
#define TEST_PIN_NUM_LCD_DATA12 (-1)
#define TEST_PIN_NUM_LCD_DATA13 (-1)
#define TEST_PIN_NUM_LCD_DATA14 (-1)
#define TEST_PIN_NUM_LCD_DATA15 (-1)
#define TEST_PIN_NUM_LCD_RST (GPIO_NUM_NC)
#define TEST_DELAY_TIME_MS (3000)
static char *TAG = "st7796_test";
static SemaphoreHandle_t refresh_finish = NULL;
IRAM_ATTR static bool test_notify_refresh_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
{
BaseType_t need_yield = pdFALSE;
xSemaphoreGiveFromISR(refresh_finish, &need_yield);
return (need_yield == pdTRUE);
}
static void test_draw_bitmap(esp_lcd_panel_handle_t panel_handle)
{
refresh_finish = xSemaphoreCreateBinary();
TEST_ASSERT_NOT_NULL(refresh_finish);
uint16_t row_line = TEST_LCD_V_RES / TEST_LCD_BIT_PER_PIXEL;
uint8_t byte_per_pixel = TEST_LCD_BIT_PER_PIXEL / 8;
uint8_t *color = (uint8_t *)heap_caps_calloc(1, row_line * TEST_LCD_H_RES * byte_per_pixel, MALLOC_CAP_DMA);
TEST_ASSERT_NOT_NULL(color);
for (int j = 0; j < TEST_LCD_BIT_PER_PIXEL; j++) {
for (int i = 0; i < row_line * TEST_LCD_H_RES; i++) {
for (int k = 0; k < byte_per_pixel; k++) {
color[i * byte_per_pixel + k] = (BIT(j) >> (k * 8)) & 0xff;
}
}
TEST_ESP_OK(esp_lcd_panel_draw_bitmap(panel_handle, 0, j * row_line, TEST_LCD_H_RES, (j + 1) * row_line, color));
xSemaphoreTake(refresh_finish, portMAX_DELAY);
}
free(color);
}
TEST_CASE("test st7796 to draw color bar with I80 interface", "[st7796][i80]")
{
ESP_LOGI(TAG, "Initialize Intel 8080 bus");
esp_lcd_i80_bus_handle_t i80_bus = NULL;
esp_lcd_i80_bus_config_t bus_config = ST7796_PANEL_BUS_I80_CONFIG(
TEST_LCD_H_RES * TEST_LCD_V_RES * TEST_LCD_BIT_PER_PIXEL / 8, TEST_LCD_DATA_WIDTH,
TEST_PIN_NUM_LCD_DC, TEST_PIN_NUM_LCD_WR,
TEST_PIN_NUM_LCD_DATA0, TEST_PIN_NUM_LCD_DATA1, TEST_PIN_NUM_LCD_DATA2, TEST_PIN_NUM_LCD_DATA3,
TEST_PIN_NUM_LCD_DATA4, TEST_PIN_NUM_LCD_DATA5, TEST_PIN_NUM_LCD_DATA6, TEST_PIN_NUM_LCD_DATA7,
TEST_PIN_NUM_LCD_DATA8, TEST_PIN_NUM_LCD_DATA9, TEST_PIN_NUM_LCD_DATA10, TEST_PIN_NUM_LCD_DATA11,
TEST_PIN_NUM_LCD_DATA12, TEST_PIN_NUM_LCD_DATA13, TEST_PIN_NUM_LCD_DATA14, TEST_PIN_NUM_LCD_DATA15);
TEST_ESP_OK(esp_lcd_new_i80_bus(&bus_config, &i80_bus));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_panel_io_handle_t io_handle = NULL;
esp_lcd_panel_io_i80_config_t io_config = ST7796_PANEL_IO_I80_CONFIG(TEST_PIN_NUM_LCD_CS, test_notify_refresh_ready, NULL);
TEST_ESP_OK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, &io_handle));
ESP_LOGI(TAG, "Install ST7796 panel driver");
const esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = TEST_PIN_NUM_LCD_RST,
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
.color_space = ESP_LCD_COLOR_SPACE_BGR,
#else
.rgb_endian = LCD_RGB_ENDIAN_BGR,
#endif
.bits_per_pixel = TEST_LCD_BIT_PER_PIXEL,
};
esp_lcd_panel_handle_t panel_handle = NULL;
TEST_ESP_OK(esp_lcd_new_panel_st7796(io_handle, &panel_config, &panel_handle));
TEST_ESP_OK(esp_lcd_panel_reset(panel_handle));
TEST_ESP_OK(esp_lcd_panel_init(panel_handle));
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
TEST_ESP_OK(esp_lcd_panel_disp_off(panel_handle, false));
#else
TEST_ESP_OK(esp_lcd_panel_disp_on_off(panel_handle, true));
#endif
test_draw_bitmap(panel_handle);
vTaskDelay(pdMS_TO_TICKS(TEST_DELAY_TIME_MS));
TEST_ESP_OK(esp_lcd_panel_del(panel_handle));
TEST_ESP_OK(esp_lcd_panel_io_del(io_handle));
TEST_ESP_OK(esp_lcd_del_i80_bus(i80_bus));
}
#endif

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managed_components/espressif__esp_lcd_st7796/test_apps/main/test_esp_lcd_st7796_mipi.c Normal file
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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "soc/soc_caps.h"
#if SOC_MIPI_DSI_SUPPORTED
#include <inttypes.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/i2c.h"
#include "driver/spi_master.h"
#include "driver/gpio.h"
#include "esp_heap_caps.h"
#include "esp_log.h"
#include "esp_timer.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_io.h"
#include "esp_ldo_regulator.h"
#include "esp_dma_utils.h"
#include "unity.h"
#include "unity_test_runner.h"
#include "unity_test_utils_memory.h"
#include "esp_lcd_mipi_dsi.h"
#include "esp_lcd_st7796.h"
#define TEST_LCD_H_RES (320)
#define TEST_LCD_V_RES (480)
#define TEST_LCD_BIT_PER_PIXEL (24)
#define TEST_PIN_NUM_LCD_RST (-1)
#define TEST_PIN_NUM_BK_LIGHT (-1) // set to -1 if not used
#define TEST_LCD_BK_LIGHT_ON_LEVEL (1)
#define TEST_LCD_BK_LIGHT_OFF_LEVEL !TEST_LCD_BK_LIGHT_ON_LEVEL
#if TEST_LCD_BIT_PER_PIXEL == 24
#define TEST_MIPI_DPI_PX_FORMAT (LCD_COLOR_PIXEL_FORMAT_RGB888)
#elif TEST_LCD_BIT_PER_PIXEL == 18
#define TEST_MIPI_DPI_PX_FORMAT (LCD_COLOR_PIXEL_FORMAT_RGB666)
#elif TEST_LCD_BIT_PER_PIXEL == 16
#define TEST_MIPI_DPI_PX_FORMAT (LCD_COLOR_PIXEL_FORMAT_RGB565)
#endif
#define TEST_DELAY_TIME_MS (3000)
#define TEST_MIPI_DSI_PHY_PWR_LDO_CHAN (3)
#define TEST_MIPI_DSI_PHY_PWR_LDO_VOLTAGE_MV (2500)
static char *TAG = "st7796_test";
static esp_ldo_channel_handle_t ldo_mipi_phy = NULL;
static esp_lcd_panel_handle_t panel_handle = NULL;
static esp_lcd_dsi_bus_handle_t mipi_dsi_bus = NULL;
static esp_lcd_panel_io_handle_t mipi_dbi_io = NULL;
static SemaphoreHandle_t refresh_finish = NULL;
IRAM_ATTR static bool test_notify_refresh_ready(esp_lcd_panel_handle_t panel, esp_lcd_dpi_panel_event_data_t *edata, void *user_ctx)
{
SemaphoreHandle_t refresh_finish = (SemaphoreHandle_t)user_ctx;
BaseType_t need_yield = pdFALSE;
xSemaphoreGiveFromISR(refresh_finish, &need_yield);
return (need_yield == pdTRUE);
}
static void test_init_lcd(void)
{
#if TEST_PIN_NUM_BK_LIGHT >= 0
ESP_LOGI(TAG, "Turn on LCD backlight");
gpio_config_t bk_gpio_config = {
.mode = GPIO_MODE_OUTPUT,
.pin_bit_mask = 1ULL << TEST_PIN_NUM_BK_LIGHT
};
TEST_ESP_OK(gpio_config(&bk_gpio_config));
TEST_ESP_OK(gpio_set_level(TEST_PIN_NUM_BK_LIGHT, TEST_LCD_BK_LIGHT_ON_LEVEL));
#endif
// Turn on the power for MIPI DSI PHY, so it can go from "No Power" state to "Shutdown" state
#ifdef TEST_MIPI_DSI_PHY_PWR_LDO_CHAN
ESP_LOGI(TAG, "MIPI DSI PHY Powered on");
esp_ldo_channel_config_t ldo_mipi_phy_config = {
.chan_id = TEST_MIPI_DSI_PHY_PWR_LDO_CHAN,
.voltage_mv = TEST_MIPI_DSI_PHY_PWR_LDO_VOLTAGE_MV,
};
TEST_ESP_OK(esp_ldo_acquire_channel(&ldo_mipi_phy_config, &ldo_mipi_phy));
#endif
ESP_LOGI(TAG, "Initialize MIPI DSI bus");
esp_lcd_dsi_bus_config_t bus_config = ST7796_PANEL_BUS_DSI_1CH_CONFIG();
TEST_ESP_OK(esp_lcd_new_dsi_bus(&bus_config, &mipi_dsi_bus));
ESP_LOGI(TAG, "Install panel IO");
esp_lcd_dbi_io_config_t dbi_config = ST7796_PANEL_IO_DBI_CONFIG();
TEST_ESP_OK(esp_lcd_new_panel_io_dbi(mipi_dsi_bus, &dbi_config, &mipi_dbi_io));
ESP_LOGI(TAG, "Install LCD driver of st7796");
esp_lcd_dpi_panel_config_t dpi_config = ST7796_320_480_PANEL_60HZ_DPI_CONFIG(TEST_MIPI_DPI_PX_FORMAT);
st7796_vendor_config_t vendor_config = {
.flags.use_mipi_interface = 1,
.mipi_config.dsi_bus = mipi_dsi_bus,
.mipi_config.dpi_config = &dpi_config,
};
const esp_lcd_panel_dev_config_t panel_config = {
.reset_gpio_num = TEST_PIN_NUM_LCD_RST,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
.bits_per_pixel = TEST_LCD_BIT_PER_PIXEL,
.vendor_config = &vendor_config,
};
TEST_ESP_OK(esp_lcd_new_panel_st7796(mipi_dbi_io, &panel_config, &panel_handle));
TEST_ESP_OK(esp_lcd_panel_reset(panel_handle));
TEST_ESP_OK(esp_lcd_panel_init(panel_handle));
TEST_ESP_OK(esp_lcd_panel_disp_on_off(panel_handle, true));
refresh_finish = xSemaphoreCreateBinary();
TEST_ASSERT_NOT_NULL(refresh_finish);
esp_lcd_dpi_panel_event_callbacks_t cbs = {
.on_color_trans_done = test_notify_refresh_ready,
};
TEST_ESP_OK(esp_lcd_dpi_panel_register_event_callbacks(panel_handle, &cbs, refresh_finish));
}
static void test_deinit_lcd(void)
{
TEST_ESP_OK(esp_lcd_panel_del(panel_handle));
TEST_ESP_OK(esp_lcd_panel_io_del(mipi_dbi_io));
TEST_ESP_OK(esp_lcd_del_dsi_bus(mipi_dsi_bus));
panel_handle = NULL;
mipi_dbi_io = NULL;
mipi_dsi_bus = NULL;
if (ldo_mipi_phy) {
TEST_ESP_OK(esp_ldo_release_channel(ldo_mipi_phy));
ldo_mipi_phy = NULL;
}
vSemaphoreDelete(refresh_finish);
refresh_finish = NULL;
#if TEST_PIN_NUM_BK_LIGHT >= 0
TEST_ESP_OK(gpio_reset_pin(TEST_PIN_NUM_BK_LIGHT));
TEST_ESP_OK(gpio_reset_pin(TEST_PIN_NUM_POWER));
#endif
}
static void test_draw_color_bar(esp_lcd_panel_handle_t panel_handle, uint16_t h_res, uint16_t v_res)
{
uint8_t byte_per_pixel = (TEST_LCD_BIT_PER_PIXEL + 7) / 8;
uint16_t row_line = v_res / byte_per_pixel / 8;
uint8_t *color = (uint8_t *)heap_caps_calloc(1, row_line * h_res * byte_per_pixel, MALLOC_CAP_DMA);
for (int j = 0; j < byte_per_pixel * 8; j++) {
for (int i = 0; i < row_line * h_res; i++) {
for (int k = 0; k < byte_per_pixel; k++) {
color[i * byte_per_pixel + k] = (BIT(j) >> (k * 8)) & 0xff;
}
}
TEST_ESP_OK(esp_lcd_panel_draw_bitmap(panel_handle, 0, j * row_line, h_res, (j + 1) * row_line, color));
xSemaphoreTake(refresh_finish, portMAX_DELAY);
}
uint16_t color_line = row_line * byte_per_pixel * 8;
uint16_t res_line = v_res - color_line;
if (res_line) {
for (int i = 0; i < res_line * h_res; i++) {
for (int k = 0; k < byte_per_pixel; k++) {
color[i * byte_per_pixel + k] = 0xff;
}
}
TEST_ESP_OK(esp_lcd_panel_draw_bitmap(panel_handle, 0, color_line, h_res, v_res, color));
xSemaphoreTake(refresh_finish, portMAX_DELAY);
}
free(color);
}
TEST_CASE("test st7796 to draw pattern with MIPI interface", "[st7796][draw_pattern]")
{
ESP_LOGI(TAG, "Initialize LCD device");
test_init_lcd();
ESP_LOGI(TAG, "Show color bar pattern drawn by hardware");
TEST_ESP_OK(esp_lcd_dpi_panel_set_pattern(panel_handle, MIPI_DSI_PATTERN_BAR_VERTICAL));
vTaskDelay(pdMS_TO_TICKS(TEST_DELAY_TIME_MS));
TEST_ESP_OK(esp_lcd_dpi_panel_set_pattern(panel_handle, MIPI_DSI_PATTERN_BAR_HORIZONTAL));
vTaskDelay(pdMS_TO_TICKS(TEST_DELAY_TIME_MS));
TEST_ESP_OK(esp_lcd_dpi_panel_set_pattern(panel_handle, MIPI_DSI_PATTERN_NONE));
ESP_LOGI(TAG, "Deinitialize LCD device");
test_deinit_lcd();
}
TEST_CASE("test st7796 to draw color bar with MIPI interface", "[st7796][draw_color_bar]")
{
ESP_LOGI(TAG, "Initialize LCD device");
test_init_lcd();
ESP_LOGI(TAG, "Show color bar drawn by software");
test_draw_color_bar(panel_handle, TEST_LCD_H_RES, TEST_LCD_V_RES);
vTaskDelay(pdMS_TO_TICKS(TEST_DELAY_TIME_MS));
ESP_LOGI(TAG, "Deinitialize LCD device");
test_deinit_lcd();
}
TEST_CASE("test st7796 to rotate with MIPI interface", "[st7796][rotate]")
{
ESP_LOGI(TAG, "Initialize LCD device");
test_init_lcd();
ESP_LOGI(TAG, "Mirror the screen");
for (size_t i = 0; i < 4; i++) {
TEST_ASSERT_NOT_EQUAL(esp_lcd_panel_mirror(panel_handle, i & 2, i & 1), ESP_FAIL);
ESP_LOGI(TAG, "Mirror: %d", i);
test_draw_color_bar(panel_handle, TEST_LCD_H_RES, TEST_LCD_V_RES);
vTaskDelay(pdMS_TO_TICKS(1000));
}
ESP_LOGI(TAG, "Deinitialize LCD device");
test_deinit_lcd();
}
#endif

12
managed_components/espressif__esp_lcd_st7796/test_apps/sdkconfig.defaults Normal file
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CONFIG_IDF_TARGET="esp32s3"
CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
CONFIG_COMPILER_OPTIMIZATION_PERF=y
CONFIG_SPIRAM=y
CONFIG_SPIRAM_MODE_OCT=y
CONFIG_SPIRAM_FETCH_INSTRUCTIONS=y
CONFIG_SPIRAM_RODATA=y
CONFIG_SPIRAM_SPEED_80M=y
CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
CONFIG_ESP_TASK_WDT_EN=n
CONFIG_FREERTOS_HZ=1000
CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH=4096