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esp-who/components/screen/controller_driver/st7789/st7789.c

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// Copyright 2020 Espressif Systems (Shanghai) Co. Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "driver/gpio.h"
#include "screen_driver.h"
#include "screen_utility.h"
#include "st7789.h"
static const char *TAG = "lcd st7789";
#define LCD_CHECK(a, str, ret) if(!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
}
#define LCD_NAME "ST7789"
#define LCD_BPP 16
/** commands of ST7789 */
#define LCD_SWRESET 0x01 // Software Reset
#define LCD_RDDID 0x04 // Read Display ID
#define LCD_INVOFF 0x20 // Display Inversion Off
#define LCD_INVON 0x21 // Display Inversion On
#define LCD_CASET 0x2A // Column Address Set
#define LCD_PASET 0x2B // Row Address Set
#define LCD_RAMWR 0x2C // Memory Writ
#define LCD_RAMRD 0x2E // Memory Read
#define LCD_MADCTL 0x36 // Memory Data Access Control
/* MADCTL Defines */
#define MADCTL_MY 0x80
#define MADCTL_MX 0x40
#define MADCTL_MV 0x20
#define MADCTL_ML 0x10
#define MADCTL_RGB 0x08
#define MADCTL_MH 0x04
#define ST7789_RESOLUTION_HOR 240
#define ST7789_RESOLUTION_VER 320
static scr_handle_t g_lcd_handle;
/**
* This header file is only used to redefine the function to facilitate the call.
* It can only be placed in this position, not in the head of the file.
*/
#include "interface_drv_def.h"
scr_driver_t lcd_st7789_default_driver = {
.init = lcd_st7789_init,
.deinit = lcd_st7789_deinit,
.set_direction = lcd_st7789_set_rotation,
.set_window = lcd_st7789_set_window,
.write_ram_data = lcd_st7789_write_ram_data,
.draw_pixel = lcd_st7789_draw_pixel,
.draw_bitmap = lcd_st7789_draw_bitmap,
.get_info = lcd_st7789_get_info,
};
static void lcd_st7789_init_reg(void)
{
LCD_WRITE_CMD(0x3A);
LCD_WRITE_DATA(0x05);
LCD_WRITE_CMD(0xB2);
LCD_WRITE_DATA(0x0C);
LCD_WRITE_DATA(0x0C);
LCD_WRITE_DATA(0x00);
LCD_WRITE_DATA(0x33);
LCD_WRITE_DATA(0x33);
LCD_WRITE_CMD(0xB7); //Gate Control
LCD_WRITE_DATA(0x35);
LCD_WRITE_CMD(0xBB); //VCOM Setting
LCD_WRITE_DATA(0x19);
LCD_WRITE_CMD(0xC0); //LCM Control
LCD_WRITE_DATA(0x2C);
LCD_WRITE_CMD(0xC2); //VDV and VRH Command Enable
LCD_WRITE_DATA(0x01);
LCD_WRITE_CMD(0xC3); //VRH Set
LCD_WRITE_DATA(0x12);
LCD_WRITE_CMD(0xC4); //VDV Set
LCD_WRITE_DATA(0x20);
LCD_WRITE_CMD(0xC6); //Frame Rate Control in Normal Mode
LCD_WRITE_DATA(0x0F);
LCD_WRITE_CMD(0xD0); // Power Control 1
LCD_WRITE_DATA(0xA4);
LCD_WRITE_DATA(0xA1);
LCD_WRITE_CMD(0xE0); //Positive Voltage Gamma Control
LCD_WRITE_DATA(0xD0);
LCD_WRITE_DATA(0x04);
LCD_WRITE_DATA(0x0D);
LCD_WRITE_DATA(0x11);
LCD_WRITE_DATA(0x13);
LCD_WRITE_DATA(0x2B);
LCD_WRITE_DATA(0x3F);
LCD_WRITE_DATA(0x54);
LCD_WRITE_DATA(0x4C);
LCD_WRITE_DATA(0x18);
LCD_WRITE_DATA(0x0D);
LCD_WRITE_DATA(0x0B);
LCD_WRITE_DATA(0x1F);
LCD_WRITE_DATA(0x23);
LCD_WRITE_CMD(0xE1); //Negative Voltage Gamma Control
LCD_WRITE_DATA(0xD0);
LCD_WRITE_DATA(0x04);
LCD_WRITE_DATA(0x0C);
LCD_WRITE_DATA(0x11);
LCD_WRITE_DATA(0x13);
LCD_WRITE_DATA(0x2C);
LCD_WRITE_DATA(0x3F);
LCD_WRITE_DATA(0x44);
LCD_WRITE_DATA(0x51);
LCD_WRITE_DATA(0x2F);
LCD_WRITE_DATA(0x1F);
LCD_WRITE_DATA(0x1F);
LCD_WRITE_DATA(0x20);
LCD_WRITE_DATA(0x23);
LCD_WRITE_CMD(0x21); //Display Inversion On
LCD_WRITE_CMD(0x11); //Sleep Out
LCD_WRITE_CMD(0x29); //Display On
}
esp_err_t lcd_st7789_init(const scr_controller_config_t *lcd_conf)
{
LCD_CHECK(lcd_conf->width <= ST7789_RESOLUTION_HOR, "Width greater than maximum", ESP_ERR_INVALID_ARG);
LCD_CHECK(lcd_conf->height <= ST7789_RESOLUTION_VER, "Height greater than maximum", ESP_ERR_INVALID_ARG);
LCD_CHECK(NULL != lcd_conf, "config pointer invalid", ESP_ERR_INVALID_ARG);
LCD_CHECK((NULL != lcd_conf->interface_drv->write_cmd && \
NULL != lcd_conf->interface_drv->write_data && \
NULL != lcd_conf->interface_drv->write && \
NULL != lcd_conf->interface_drv->read && \
NULL != lcd_conf->interface_drv->bus_acquire && \
NULL != lcd_conf->interface_drv->bus_release),
"Interface driver invalid", ESP_ERR_INVALID_ARG);
esp_err_t ret;
// Reset the display
if (lcd_conf->pin_num_rst >= 0) {
gpio_pad_select_gpio(lcd_conf->pin_num_rst);
gpio_set_direction(lcd_conf->pin_num_rst, GPIO_MODE_OUTPUT);
gpio_set_level(lcd_conf->pin_num_rst, (lcd_conf->rst_active_level) & 0x1);
vTaskDelay(100 / portTICK_RATE_MS);
gpio_set_level(lcd_conf->pin_num_rst, (~(lcd_conf->rst_active_level)) & 0x1);
vTaskDelay(100 / portTICK_RATE_MS);
}
g_lcd_handle.interface_drv = lcd_conf->interface_drv;
g_lcd_handle.original_width = lcd_conf->width;
g_lcd_handle.original_height = lcd_conf->height;
g_lcd_handle.offset_hor = lcd_conf->offset_hor;
g_lcd_handle.offset_ver = lcd_conf->offset_ver;
lcd_st7789_init_reg();
// Enable backlight
if (lcd_conf->pin_num_bckl >= 0) {
gpio_pad_select_gpio(lcd_conf->pin_num_bckl);
gpio_set_direction(lcd_conf->pin_num_bckl, GPIO_MODE_OUTPUT);
gpio_set_level(lcd_conf->pin_num_bckl, (lcd_conf->bckl_active_level) & 0x1);
}
ret = lcd_st7789_set_rotation(lcd_conf->rotate);
LCD_CHECK(ESP_OK == ret, "Set rotate failed", ESP_FAIL);
ret = lcd_st7789_set_invert(1); /**< ST7789 setting the reverse color is the normal color */
LCD_CHECK(ESP_OK == ret, "Set color invert failed", ESP_FAIL);
return ESP_OK;
}
esp_err_t lcd_st7789_deinit(void)
{
memset(&g_lcd_handle, 0, sizeof(scr_handle_t));
return ESP_OK;
}
esp_err_t lcd_st7789_set_rotation(scr_dir_t dir)
{
esp_err_t ret;
uint8_t reg_data = 0;
reg_data &= ~MADCTL_RGB;
if (SCR_DIR_MAX < dir) {
dir >>= 5;
}
LCD_CHECK(dir < 8, "Unsupport rotate direction", ESP_ERR_INVALID_ARG);
switch (dir) {
case SCR_DIR_LRTB:
g_lcd_handle.width = g_lcd_handle.original_width;
g_lcd_handle.height = g_lcd_handle.original_height;
break;
case SCR_DIR_LRBT:
reg_data |= MADCTL_MY;
g_lcd_handle.width = g_lcd_handle.original_width;
g_lcd_handle.height = g_lcd_handle.original_height;
break;
case SCR_DIR_RLTB:
reg_data |= MADCTL_MX;
g_lcd_handle.width = g_lcd_handle.original_width;
g_lcd_handle.height = g_lcd_handle.original_height;
break;
case SCR_DIR_RLBT:
reg_data |= MADCTL_MX | MADCTL_MY;
g_lcd_handle.width = g_lcd_handle.original_width;
g_lcd_handle.height = g_lcd_handle.original_height;
break;
case SCR_DIR_TBLR:
reg_data |= MADCTL_MV;
g_lcd_handle.width = g_lcd_handle.original_height;
g_lcd_handle.height = g_lcd_handle.original_width;
break;
case SCR_DIR_BTLR:
reg_data |= MADCTL_MY | MADCTL_MV;
g_lcd_handle.width = g_lcd_handle.original_height;
g_lcd_handle.height = g_lcd_handle.original_width;
break;
case SCR_DIR_TBRL:
reg_data |= MADCTL_MX | MADCTL_MV;
g_lcd_handle.width = g_lcd_handle.original_height;
g_lcd_handle.height = g_lcd_handle.original_width;
break;
case SCR_DIR_BTRL:
reg_data |= MADCTL_MX | MADCTL_MY | MADCTL_MV;
g_lcd_handle.width = g_lcd_handle.original_height;
g_lcd_handle.height = g_lcd_handle.original_width;
break;
default: break;
}
ESP_LOGI(TAG, "MADCTL=%x", reg_data);
ret = LCD_WRITE_REG(LCD_MADCTL, reg_data);
LCD_CHECK(ESP_OK == ret, "Set screen rotate failed", ESP_FAIL);
g_lcd_handle.dir = dir;
return ESP_OK;
}
esp_err_t lcd_st7789_get_info(scr_info_t *info)
{
LCD_CHECK(NULL != info, "info pointer invalid", ESP_ERR_INVALID_ARG);
info->width = g_lcd_handle.width;
info->height = g_lcd_handle.height;
info->dir = g_lcd_handle.dir;
info->name = LCD_NAME;
info->color_type = SCR_COLOR_TYPE_RGB565;
info->bpp = LCD_BPP;
return ESP_OK;
}
esp_err_t lcd_st7789_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
LCD_CHECK((x1 < g_lcd_handle.width) && (y1 < g_lcd_handle.height), "The set coordinates exceed the screen size", ESP_ERR_INVALID_ARG);
LCD_CHECK((x0 <= x1) && (y0 <= y1), "Window coordinates invalid", ESP_ERR_INVALID_ARG);
esp_err_t ret = ESP_OK;
scr_utility_apply_offset(&g_lcd_handle, ST7789_RESOLUTION_HOR, ST7789_RESOLUTION_VER, &x0, &y0, &x1, &y1);
ret |= LCD_WRITE_CMD(LCD_CASET);
ret |= LCD_WRITE_DATA(x0 >> 8);
ret |= LCD_WRITE_DATA(x0 & 0xff);
ret |= LCD_WRITE_DATA(x1 >> 8);
ret |= LCD_WRITE_DATA(x1 & 0xff);
ret |= LCD_WRITE_CMD(LCD_PASET);
ret |= LCD_WRITE_DATA(y0 >> 8);
ret |= LCD_WRITE_DATA(y0 & 0xff);
ret |= LCD_WRITE_DATA(y1 >> 8);
ret |= LCD_WRITE_DATA(y1 & 0xff);
ret |= LCD_WRITE_CMD(LCD_RAMWR);
LCD_CHECK(ESP_OK == ret, "Set window failed", ESP_FAIL);
return ESP_OK;
}
esp_err_t lcd_st7789_write_ram_data(uint16_t color)
{
static uint8_t data[2];
data[0] = (uint8_t)(color & 0xff);
data[1] = (uint8_t)(color >> 8);
return LCD_WRITE(data, 2);
}
esp_err_t lcd_st7789_set_invert(bool is_invert)
{
return LCD_WRITE_CMD(is_invert ? LCD_INVON : LCD_INVOFF);
}
esp_err_t lcd_st7789_draw_pixel(uint16_t x, uint16_t y, uint16_t color)
{
esp_err_t ret;
ret = lcd_st7789_set_window(x, y, x, y);
if (ESP_OK != ret) {
return ESP_FAIL;
}
return lcd_st7789_write_ram_data(color);
}
esp_err_t lcd_st7789_draw_bitmap(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t *bitmap)
{
esp_err_t ret;
LCD_CHECK(NULL != bitmap, "bitmap pointer invalid", ESP_ERR_INVALID_ARG);
LCD_IFACE_ACQUIRE();
ret = lcd_st7789_set_window(x, y, x + w - 1, y + h - 1);
if (ESP_OK != ret) {
return ESP_FAIL;
}
uint32_t len = w * h;
ret = LCD_WRITE((uint8_t *)bitmap, 2 * len);
LCD_IFACE_RELEASE();
LCD_CHECK(ESP_OK == ret, "lcd write ram data failed", ESP_FAIL);
return ESP_OK;
}
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