322 lines
11 KiB
C
322 lines
11 KiB
C
// 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 "st7796.h"
|
|
|
|
static const char *TAG = "lcd st7796";
|
|
|
|
#define LCD_CHECK(a, str, ret) if(!(a)) { \
|
|
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
|
|
return (ret); \
|
|
}
|
|
|
|
|
|
#define LCD_NAME "ST7796"
|
|
#define LCD_BPP 16
|
|
|
|
#define ST7796_RESOLUTION_HOR 320
|
|
#define ST7796_RESOLUTION_VER 480
|
|
|
|
/** commands of ST7796 */
|
|
#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
|
|
|
|
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_st7796_default_driver = {
|
|
.init = lcd_st7796_init,
|
|
.deinit = lcd_st7796_deinit,
|
|
.set_direction = lcd_st7796_set_rotation,
|
|
.set_window = lcd_st7796_set_window,
|
|
.write_ram_data = lcd_st7796_write_ram_data,
|
|
.draw_pixel = lcd_st7796_draw_pixel,
|
|
.draw_bitmap = lcd_st7796_draw_bitmap,
|
|
.get_info = lcd_st7796_get_info,
|
|
};
|
|
|
|
|
|
static esp_err_t lcd_st7796_reg_config(void);
|
|
|
|
esp_err_t lcd_st7796_init(const scr_controller_config_t *lcd_conf)
|
|
{
|
|
LCD_CHECK(lcd_conf->width <= ST7796_RESOLUTION_HOR, "Width greater than maximum", ESP_ERR_INVALID_ARG);
|
|
LCD_CHECK(lcd_conf->height <= ST7796_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;
|
|
|
|
// Send all the commands
|
|
ret = lcd_st7796_reg_config();
|
|
LCD_CHECK(ESP_OK == ret, "Write lcd register encounter error", ESP_FAIL);
|
|
|
|
// 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_st7796_set_rotation(lcd_conf->rotate);
|
|
LCD_CHECK(ESP_OK == ret, "Set rotate failed", ESP_FAIL);
|
|
lcd_st7796_set_invert(false);
|
|
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t lcd_st7796_deinit(void)
|
|
{
|
|
memset(&g_lcd_handle, 0, sizeof(scr_handle_t));
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t lcd_st7796_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_st7796_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_st7796_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, ST7796_RESOLUTION_HOR, ST7796_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_st7796_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_st7796_set_invert(bool is_invert)
|
|
{
|
|
return LCD_WRITE_CMD(is_invert ? LCD_INVON : LCD_INVOFF);
|
|
}
|
|
|
|
esp_err_t lcd_st7796_draw_pixel(uint16_t x, uint16_t y, uint16_t color)
|
|
{
|
|
esp_err_t ret;
|
|
ret = lcd_st7796_set_window(x, y, x, y);
|
|
if (ESP_OK != ret) {
|
|
return ESP_FAIL;
|
|
}
|
|
return lcd_st7796_write_ram_data(color);
|
|
}
|
|
|
|
esp_err_t lcd_st7796_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_st7796_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;
|
|
}
|
|
|
|
static esp_err_t lcd_st7796_reg_config(void)
|
|
{
|
|
LCD_WRITE_CMD(0x11); //Sleep Out
|
|
vTaskDelay(pdMS_TO_TICKS(100));
|
|
LCD_WRITE_CMD(0xf0);
|
|
LCD_WRITE_DATA(0xc3); //enable command 2 part 1
|
|
LCD_WRITE_CMD(0xf0);
|
|
LCD_WRITE_DATA(0x96); //enable command 2 part 2
|
|
LCD_WRITE_CMD(0x36); //内存数据访问控制
|
|
|
|
LCD_WRITE_DATA(0x28);
|
|
|
|
LCD_WRITE_CMD(0x3a); //16bit pixel
|
|
LCD_WRITE_DATA(0x55);
|
|
|
|
LCD_WRITE_CMD(0xb4);
|
|
LCD_WRITE_DATA(0x01);
|
|
|
|
LCD_WRITE_CMD(0xb7); LCD_WRITE_DATA(0xc6);
|
|
|
|
LCD_WRITE_CMD(0xe8); LCD_WRITE_DATA(0x40);
|
|
LCD_WRITE_DATA(0x8a); LCD_WRITE_DATA(0x00);
|
|
LCD_WRITE_DATA(0x00); LCD_WRITE_DATA(0x29);
|
|
LCD_WRITE_DATA(0x19); LCD_WRITE_DATA(0xa5);
|
|
LCD_WRITE_DATA(0x33);
|
|
|
|
LCD_WRITE_CMD(0xc1); LCD_WRITE_DATA(0x06);
|
|
LCD_WRITE_CMD(0xc2); LCD_WRITE_DATA(0xa7);
|
|
LCD_WRITE_CMD(0xc5); LCD_WRITE_DATA(0x18);
|
|
|
|
LCD_WRITE_CMD(0xe0); LCD_WRITE_DATA(0xf0);
|
|
LCD_WRITE_DATA(0x09); LCD_WRITE_DATA(0x0b);
|
|
LCD_WRITE_DATA(0x06); LCD_WRITE_DATA(0x04);
|
|
LCD_WRITE_DATA(0x15); LCD_WRITE_DATA(0x2f);
|
|
LCD_WRITE_DATA(0x54); LCD_WRITE_DATA(0x42);
|
|
LCD_WRITE_DATA(0x3c); LCD_WRITE_DATA(0x17);
|
|
LCD_WRITE_DATA(0x14); LCD_WRITE_DATA(0x18);
|
|
LCD_WRITE_DATA(0x1b);
|
|
|
|
//Negative Voltage Gamma Coltrol
|
|
LCD_WRITE_CMD(0xe1); LCD_WRITE_DATA(0xf0);
|
|
LCD_WRITE_DATA(0x09); LCD_WRITE_DATA(0x0b);
|
|
LCD_WRITE_DATA(0x06); LCD_WRITE_DATA(0x04);
|
|
LCD_WRITE_DATA(0x03); LCD_WRITE_DATA(0x2d);
|
|
LCD_WRITE_DATA(0x43); LCD_WRITE_DATA(0x42);
|
|
LCD_WRITE_DATA(0x3b); LCD_WRITE_DATA(0x16);
|
|
LCD_WRITE_DATA(0x14); LCD_WRITE_DATA(0x17);
|
|
LCD_WRITE_DATA(0x1b);
|
|
|
|
LCD_WRITE_CMD(0xf0); LCD_WRITE_DATA(0x3c);
|
|
LCD_WRITE_CMD(0xf0); LCD_WRITE_DATA(0x69);
|
|
vTaskDelay(pdMS_TO_TICKS(10));
|
|
LCD_WRITE_CMD(0x29); //Display ON
|
|
|
|
return ESP_OK;
|
|
} |