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esp-who/components/screen/controller_driver/ili9486/ili9486.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 "ili9486.h"
static const char *TAG = "ILI9486";
#define LCD_CHECK(a, str, ret) if(!(a)) { \
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
}
#define ILI9486_CASET 0x2A
#define ILI9486_RASET 0x2B
#define ILI9486_RAMWR 0x2C
#define ILI9486_MADCTL 0x36
/* 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 LCD_NAME "ILI9486"
#define LCD_BPP 16
#define ILI9486_RESOLUTION_HOR 320
#define ILI9486_RESOLUTION_VER 480
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_ili9486_default_driver = {
.init = lcd_ili9486_init,
.deinit = lcd_ili9486_deinit,
.set_direction = lcd_ili9486_set_rotation,
.set_window = lcd_ili9486_set_window,
.write_ram_data = lcd_ili9486_write_ram_data,
.draw_pixel = lcd_ili9486_draw_pixel,
.draw_bitmap = lcd_ili9486_draw_bitmap,
.get_info = lcd_ili9486_get_info,
};
static void lcd_ili9486_init_reg(void);
esp_err_t lcd_ili9486_init(const scr_controller_config_t *lcd_conf)
{
LCD_CHECK(lcd_conf->width <= ILI9486_RESOLUTION_HOR, "Width greater than maximum", ESP_ERR_INVALID_ARG);
LCD_CHECK(lcd_conf->height <= ILI9486_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_ili9486_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_ili9486_set_rotation(lcd_conf->rotate);
LCD_CHECK(ESP_OK == ret, "set rotation failed", ESP_FAIL);
return ESP_OK;
}
esp_err_t lcd_ili9486_deinit(void)
{
memset(&g_lcd_handle, 0, sizeof(scr_handle_t));
return ESP_OK;
}
esp_err_t lcd_ili9486_set_rotation(scr_dir_t dir)
{
esp_err_t ret;
uint8_t 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=0x%x", reg_data);
ret = LCD_WRITE_REG(ILI9486_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_ili9486_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_ili9486_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, ILI9486_RESOLUTION_HOR, ILI9486_RESOLUTION_VER, &x0, &y0, &x1, &y1);
ret |= LCD_WRITE_CMD(ILI9486_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(ILI9486_RASET);
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(ILI9486_RAMWR);
LCD_CHECK(ESP_OK == ret, "Set window failed", ESP_FAIL);
return ESP_OK;
}
esp_err_t lcd_ili9486_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_ili9486_draw_pixel(uint16_t x, uint16_t y, uint16_t color)
{
esp_err_t ret;
ret = lcd_ili9486_set_window(x, y, x, y);
if (ESP_OK != ret) {
return ESP_FAIL;
}
return lcd_ili9486_write_ram_data(color);
}
esp_err_t lcd_ili9486_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_ili9486_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 void lcd_ili9486_init_reg(void)
{
LCD_WRITE_CMD(0x01); // SW reset
vTaskDelay(120 / portTICK_RATE_MS);
// Interface Mode Control
LCD_WRITE_CMD(0xb0);
LCD_WRITE_DATA(0x00);
// Interface Pixel Format, 16 bits / pixel
LCD_WRITE_CMD(0x3A);
LCD_WRITE_DATA(0x55); // 5D
// PGAMCTRL(Positive Gamma Control)
LCD_WRITE_CMD(0xE0);
LCD_WRITE_DATA(0x0F);
LCD_WRITE_DATA(0x1F);
LCD_WRITE_DATA(0x1C);
LCD_WRITE_DATA(0x0C);
LCD_WRITE_DATA(0x0F);
LCD_WRITE_DATA(0x08);
LCD_WRITE_DATA(0x48);
LCD_WRITE_DATA(0x98);
LCD_WRITE_DATA(0x37);
LCD_WRITE_DATA(0x0A);
LCD_WRITE_DATA(0x13);
LCD_WRITE_DATA(0x04);
LCD_WRITE_DATA(0x11);
LCD_WRITE_DATA(0x0D);
LCD_WRITE_DATA(0x00);
// NGAMCTRL (Negative Gamma Correction)
LCD_WRITE_CMD(0xE1);
LCD_WRITE_DATA(0x0F);
LCD_WRITE_DATA(0x32);
LCD_WRITE_DATA(0x2E);
LCD_WRITE_DATA(0x0B);
LCD_WRITE_DATA(0x0D);
LCD_WRITE_DATA(0x05);
LCD_WRITE_DATA(0x47);
LCD_WRITE_DATA(0x75);
LCD_WRITE_DATA(0x37);
LCD_WRITE_DATA(0x06);
LCD_WRITE_DATA(0x10);
LCD_WRITE_DATA(0x03);
LCD_WRITE_DATA(0x24);
LCD_WRITE_DATA(0x20);
LCD_WRITE_DATA(0x00);
// Digital Gamma Control 1
LCD_WRITE_CMD(0xE2);
LCD_WRITE_DATA(0x0F);
LCD_WRITE_DATA(0x32);
LCD_WRITE_DATA(0x2E);
LCD_WRITE_DATA(0x0B);
LCD_WRITE_DATA(0x0D);
LCD_WRITE_DATA(0x05);
LCD_WRITE_DATA(0x47);
LCD_WRITE_DATA(0x75);
LCD_WRITE_DATA(0x37);
LCD_WRITE_DATA(0x06);
LCD_WRITE_DATA(0x10);
LCD_WRITE_DATA(0x03);
LCD_WRITE_DATA(0x24);
LCD_WRITE_DATA(0x20);
LCD_WRITE_DATA(0x00);
// Set rotation
// setRotation(_rotation);
// Idle mode control + Power + Frame rate ctrl
LCD_WRITE_CMD(0x38);
// frame rate ctrl
LCD_WRITE_CMD(0xB1);
// Frame rate(Hz) (default: 70kHz) /-/ Division Ratio (default: fosc)
LCD_WRITE_DATA(0xB0);
// Clock per Line (default: 17 clk cycles)
LCD_WRITE_DATA(0x11);
// Power Control 3 (For Normal Mode)
LCD_WRITE_CMD(0xC2);
LCD_WRITE_DATA(0x55); // 44
// Display Inversion Control
LCD_WRITE_CMD(0xB4);
LCD_WRITE_DATA(0x02); // 2 dot invercion /-/ disabled | 0x12 to enable
// Display Function Control
LCD_WRITE_CMD(0xB6);
LCD_WRITE_DATA(0x02);
LCD_WRITE_DATA(0x22);
LCD_WRITE_DATA(0x3B);
// # Sleep OUT
LCD_WRITE_CMD(0x11);
vTaskDelay(150 / portTICK_RATE_MS);
// Display ON
LCD_WRITE_CMD(0x29);
}
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