LuatOS/components/lcd/luat_lcd.c

#include "luat_base.h"
#include "luat_lcd.h"
#include "luat_gpio.h"
#include "luat_spi.h"
#include "luat_malloc.h"
#include "luat_rtos.h"

#define LUAT_LOG_TAG "lcd"
#include "luat_log.h"

luat_color_t BACK_COLOR = LCD_WHITE, FORE_COLOR = LCD_BLACK;

#define LUAT_LCD_CONF_COUNT (1)
static luat_lcd_conf_t* confs[LUAT_LCD_CONF_COUNT] = {0};

luat_color_t color_swap(luat_color_t color) {
    luat_color_t tmp = (color >> 8) + ((color & 0xFF) << 8);
    return tmp;
}

void luat_lcd_execute_cmds(luat_lcd_conf_t* conf) {
    uint16_t cmd = 0,cmd_len = 0;
    uint8_t cmd_send = 0;
    uint8_t cmds[32]={0};
    for (size_t i = 0; i < conf->opts->init_cmds_len; i++){
        cmd = conf->opts->init_cmds[i];
        switch(((cmd >> 8) & 0xFF)) {
            case 0x0000:
            case 0x0002:
                if (i!=0){
                    if (cmd_len){
                        lcd_write_cmd_data(conf,cmd_send, cmds, cmd_len);
                    }else{
                        lcd_write_cmd_data(conf,cmd_send, NULL, 0);
                    }
                }
                cmd_send = (uint8_t)(cmd & 0xFF);
                cmd_len = 0;
                break;
            case 0x0001:
                luat_rtos_task_sleep(cmd & 0xFF);
                break;
            case 0x0003:
                cmds[cmd_len]= (uint8_t)(cmd & 0xFF);
                cmd_len++;
                break;
            default:
                break;
        }
        if (i==conf->opts->init_cmds_len-1){
            if (cmd_len){
                lcd_write_cmd_data(conf,cmd_send, cmds, cmd_len);
            }else{
                lcd_write_cmd_data(conf,cmd_send, NULL, 0);
            }
        }
    }
}

int lcd_write_data(luat_lcd_conf_t* conf, const uint8_t data){
    size_t len;
    if (conf->port == LUAT_LCD_SPI_DEVICE){
        len = luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device),  (const char*)&data, 1);
    }else{
        len = luat_spi_send(conf->port,  (const char*)&data, 1);
    }
    if (len != 1){
        LLOGI("lcd_write_data error. %d", len);
        return -1;
    }else{
        return 0;
    }
}

int lcd_write_cmd_data(luat_lcd_conf_t* conf,const uint8_t cmd, const uint8_t *data, uint8_t data_len){
    if (conf->opts->write_cmd_data){
        return conf->opts->write_cmd_data(conf,cmd,data,data_len);
    }
    size_t len;
    if (conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_I || conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_II){
        luat_gpio_set(conf->pin_dc, Luat_GPIO_LOW);
    }
#ifdef LUAT_LCD_CMD_DELAY_US
    if (conf->dc_delay_us){
    	luat_timer_us_delay(conf->dc_delay_us);
    }
#endif
    if (conf->port == LUAT_LCD_SPI_DEVICE){
        len = luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device),  (const char*)&cmd, 1);
    }else{
        len = luat_spi_send(conf->port, (const char*)&cmd, 1);
    }
    if (conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_I || conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_II){
        luat_gpio_set(conf->pin_dc, Luat_GPIO_HIGH);
    }
    if (len != 1){
        LLOGI("lcd_write_cmd error. %d", len);
        return -1;
    }else{
        #ifdef LUAT_LCD_CMD_DELAY_US
        if (conf->dc_delay_us){
        	luat_timer_us_delay(conf->dc_delay_us);
        }
        #endif
    }
    if (data_len){
        if (conf->port == LUAT_LCD_SPI_DEVICE){
            len = luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device),  (const char*)data, data_len);
        }else{
            len = luat_spi_send(conf->port,  (const char*)data, data_len);
        }
        if (len != data_len){
            LLOGI("lcd_write_data error. %d", len);
            return -1;
        }
    }
    return 0;
}

luat_lcd_conf_t* luat_lcd_get_default(void) {
    for (size_t i = 0; i < LUAT_LCD_CONF_COUNT; i++){
        if (confs[i] != NULL) {
            return confs[i];
        }
    }
    return NULL;
}

const char* luat_lcd_name(luat_lcd_conf_t* conf) {
    return conf->opts->name;
}

int luat_lcd_init(luat_lcd_conf_t* conf) {
    uint8_t direction_date = 0;
	conf->is_init_done = 0;
    if (conf->w == 0)
        conf->w = LCD_W;
    if (conf->h == 0)
        conf->h = LCD_H;
    LLOGD("interface_mode:%d",conf->interface_mode);
    if (conf->pin_pwr != 255)
        luat_gpio_mode(conf->pin_pwr, Luat_GPIO_OUTPUT, Luat_GPIO_DEFAULT, Luat_GPIO_LOW); // POWER
    if (conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_I || conf->interface_mode==LUAT_LCD_IM_4_WIRE_8_BIT_INTERFACE_II){
        luat_gpio_mode(conf->pin_dc, Luat_GPIO_OUTPUT, Luat_GPIO_DEFAULT, Luat_GPIO_HIGH); // DC
    }
    luat_gpio_mode(conf->pin_rst, Luat_GPIO_OUTPUT, Luat_GPIO_DEFAULT, Luat_GPIO_LOW); // RST

    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_LOW);
    luat_gpio_set(conf->pin_rst, Luat_GPIO_LOW);
    luat_rtos_task_sleep(100);
    luat_gpio_set(conf->pin_rst, Luat_GPIO_HIGH);
    luat_rtos_task_sleep(120);
    luat_lcd_wakeup(conf);
    luat_rtos_task_sleep(120);

    // 发送初始化命令
    if (conf->opts->init){
        conf->opts->init(conf);
    }else{
        luat_lcd_execute_cmds(conf);
        if(conf->direction==0) direction_date = conf->opts->direction0;
        else if(conf->direction==1) direction_date = conf->opts->direction90;
        else if(conf->direction==2) direction_date = conf->opts->direction180;
        else direction_date = conf->opts->direction270;
        lcd_write_cmd_data(conf,0x36, &direction_date, 1);
    }

    luat_lcd_wakeup(conf);
    /* wait for power stability */
    luat_rtos_task_sleep(100);
    luat_lcd_clear(conf,LCD_BLACK);
    /* display on */
    luat_lcd_display_on(conf);

    conf->is_init_done = 1;
    for (size_t i = 0; i < LUAT_LCD_CONF_COUNT; i++){
        if (confs[i] == NULL) {
            confs[i] = conf;
            return 0;
        }
    }
    return -1;
}

int luat_lcd_close(luat_lcd_conf_t* conf) {
    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_LOW);
    return 0;
}

int luat_lcd_display_off(luat_lcd_conf_t* conf) {
    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_LOW);
    lcd_write_cmd_data(conf,0x28, NULL, 0);
    return 0;
}

int luat_lcd_display_on(luat_lcd_conf_t* conf) {
    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_HIGH);
    lcd_write_cmd_data(conf,0x29, NULL, 0);
    return 0;
}

int luat_lcd_sleep(luat_lcd_conf_t* conf) {
    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_LOW);
    luat_rtos_task_sleep(5);
    lcd_write_cmd_data(conf,0x10, NULL, 0);
    return 0;
}

int luat_lcd_wakeup(luat_lcd_conf_t* conf) {
    if (conf->pin_pwr != 255)
        luat_gpio_set(conf->pin_pwr, Luat_GPIO_HIGH);
    luat_rtos_task_sleep(5);
    lcd_write_cmd_data(conf,0x11, NULL, 0);
    return 0;
}

int luat_lcd_inv_off(luat_lcd_conf_t* conf) {
    lcd_write_cmd_data(conf,0x20, NULL, 0);
    return 0;
}

int luat_lcd_inv_on(luat_lcd_conf_t* conf) {
    lcd_write_cmd_data(conf,0x21, NULL, 0);
    return 0;
}

int luat_lcd_set_address(luat_lcd_conf_t* conf,int16_t x1, int16_t y1, int16_t x2, int16_t y2) {
    uint8_t data_x[] = {(x1+conf->xoffset)>>8,x1+conf->xoffset,(x2+conf->xoffset)>>8,x2+conf->xoffset};
    lcd_write_cmd_data(conf,0x2a, data_x, 4);
    uint8_t data_y[] = {(y1+conf->yoffset)>>8,y1+conf->yoffset,(y2+conf->yoffset)>>8,y2+conf->yoffset};
    lcd_write_cmd_data(conf,0x2b, data_y, 4);
    lcd_write_cmd_data(conf,0x2c, NULL, 0);
    return 0;
}

int luat_lcd_set_color(luat_color_t back, luat_color_t fore){
    BACK_COLOR = back;
    FORE_COLOR = fore;
    return 0;
}

#ifndef LUAT_USE_LCD_CUSTOM_DRAW
int luat_lcd_flush(luat_lcd_conf_t* conf) {
    if (conf->buff == NULL) {
        return 0;
    }
    //LLOGD("luat_lcd_flush range %d %d", conf->flush_y_min, conf->flush_y_max);
    if (conf->flush_y_max < conf->flush_y_min) {
        // 没有需要刷新的内容,直接跳过
        //LLOGD("luat_lcd_flush no need");
        return 0;
    }
    uint32_t size = conf->w * (conf->flush_y_max - conf->flush_y_min + 1) * 2;
    luat_lcd_set_address(conf, 0, conf->flush_y_min, conf->w - 1, conf->flush_y_max);
    const char* tmp = (const char*)(conf->buff + conf->flush_y_min * conf->w);
	if (conf->port == LUAT_LCD_SPI_DEVICE){
		luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device), tmp, size);
	}else{
		luat_spi_send(conf->port, tmp, size);
	}

    // 重置为不需要刷新的状态
    conf->flush_y_max = 0;
    conf->flush_y_min = conf->h;
    
    return 0;
}

int luat_lcd_draw(luat_lcd_conf_t* conf, int16_t x1, int16_t y1, int16_t x2, int16_t y2, luat_color_t* color) {
    if (x1 >= conf->w || y1 >= conf->h || x2 < 0 || y2 < 0 || x2 < x1 || y2 < y1) {
        // LLOGE("out of lcd buff range %d %d %d %d", x1, y1, x2, y2);
        // LLOGE("out of lcd buff range %d %d %d %d %d", x1 >= conf->w, y1 >= conf->h, y2 < 0, x2 < x1, y2 < y1);
        return 0;
    }
    if (y2 >= conf->h) {
        y2 = conf->h - 1;
    }
    if (conf->opts->lcd_draw)
    	return conf->opts->lcd_draw(conf, x1, y1, x2, y2, color);
    // 直接刷屏模式
    if (conf->buff == NULL) {
        // 常规数据, 整体传输
        if (x1 >= 0 && y1 >= 0 && x2 <= conf->w && y2 <= conf->h) {
            uint32_t size = (x2 - x1 + 1) * (y2 - y1 + 1);
            // LLOGD("draw %dx%d %dx%d %d", x1, y1, x2, y2, size);
            luat_lcd_set_address(conf, x1, y1, x2, y2);
	        if (conf->port == LUAT_LCD_SPI_DEVICE){
		        luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device), (const char*)color, size* sizeof(luat_color_t));
	        }else{
		        luat_spi_send(conf->port, (const char*)color, size * sizeof(luat_color_t));
	        }
        }
        // 超出边界的数据, 按行传输
        else {
            int line_size = (x2 - x1 + 1);
            // LLOGD("want draw %dx%d %dx%d %d", x1, y1, x2, y2, line_size);
            luat_color_t* ptr = (luat_color_t*)color;
            for (int i = y1; i <= y2; i++)
            {
                if (i < 0) {
                    ptr += line_size;
                    continue;
                }
                luat_color_t* line = ptr;
                int lsize = line_size;
                int tmp_x1 = x1;
                int tmp_x2 = x2;
                if (x1 < 0) {
                    line += ( - x1);
                    lsize += (x1);
                    tmp_x1 = 0;
                }
                if (x2 > conf->w) {
                    lsize -= (x2 - conf->w);
                    tmp_x2 = conf->w;
                }
                // LLOGD("action draw %dx%d %dx%d %d", tmp_x1, i, tmp_x2, i, lsize);
                luat_lcd_set_address(conf, tmp_x1, i, tmp_x2, i);
	            if (conf->port == LUAT_LCD_SPI_DEVICE){
		            luat_spi_device_send((luat_spi_device_t*)(conf->lcd_spi_device), (const char*)line, lsize * sizeof(luat_color_t));
	            }else{
		            luat_spi_send(conf->port, (const char*)line, lsize * sizeof(luat_color_t));
	            }
                ptr += line_size;
            }
            
            // TODO
            // LLOGD("超出边界,特殊处理");
        }
        return 0;
    }
    // buff模式
    int16_t x_end = x2 >= conf->w?  (conf->w - 1):x2;
    luat_color_t* dst = (conf->buff);
    size_t lsize = (x2 - x1 + 1);
    for (int16_t x = x1; x <= x2; x++)
    {
        if (x < 0 || x >= conf->w)
            continue;
        for (int16_t y = y1; y <= y2; y++)
        {
            if (y < 0 || y >= conf->h)
                continue;
            memcpy((char*)(dst + (conf->w * y + x)), (char*)(color + (lsize * (y-y1) + (x-x1))), sizeof(luat_color_t));
        }
    }
    // 存储需要刷新的区域
    if (y1 < conf->flush_y_min) {
        if (y1 >= 0)
            conf->flush_y_min = y1;
        else
            conf->flush_y_min = 0;
    }
    if (y2 > conf->flush_y_max) {
        conf->flush_y_max = y2;
    }
    return 0;
}
#endif

int luat_lcd_draw_point(luat_lcd_conf_t* conf, int16_t x, int16_t y, luat_color_t color) {
    // 注意, 这里需要把颜色swap了
    luat_color_t tmp = color_swap(color);
    return luat_lcd_draw(conf, x, y, x, y, &tmp);
}

int luat_lcd_clear(luat_lcd_conf_t* conf, luat_color_t color){
    luat_lcd_draw_fill(conf, 0, 0, conf->w - 1, conf->h, color);
    return 0;
}

int luat_lcd_draw_fill(luat_lcd_conf_t* conf,int16_t x1,int16_t y1,int16_t x2,int16_t y2, luat_color_t color) {          
	int16_t i;
	for(i=y1;i<y2;i++)
	{
		luat_lcd_draw_line(conf, x1, i, x2, i, color);
	}
    return 0;			  	    
}

int luat_lcd_draw_vline(luat_lcd_conf_t* conf, int16_t x, int16_t y,int16_t h, luat_color_t color) {
    if (h<=0) return 0;
    return luat_lcd_draw_line(conf, x, y, x, y + h - 1, color);
}

int luat_lcd_draw_hline(luat_lcd_conf_t* conf, int16_t x, int16_t y,int16_t w, luat_color_t color) {
    if (w<=0) return 0;
    return luat_lcd_draw_line(conf, x, y, x + w - 1, y, color);
}

int luat_lcd_draw_line(luat_lcd_conf_t* conf,int16_t x1, int16_t y1, int16_t x2, int16_t y2,luat_color_t color) {
    int16_t t;
    uint32_t i = 0;
    int xerr = 0, yerr = 0, delta_x, delta_y, distance;
    int incx, incy, row, col;
    if (x1 == x2 || y1 == y2) // 直线
    {
        size_t dots = (x2 - x1 + 1) * (y2 - y1 + 1);//点数量
        luat_color_t* line_buf = (luat_color_t*) luat_heap_malloc(dots * sizeof(luat_color_t));
        // 颜色swap
        luat_color_t tmp = color_swap(color);
        if (line_buf) {
            for (i = 0; i < dots; i++)
            {
                line_buf[i] = tmp;
            }
            luat_lcd_draw(conf, x1, y1, x2, y2, line_buf);
            luat_heap_free(line_buf);
            return 0;
        }
    }

    delta_x = x2 - x1;
    delta_y = y2 - y1;
    row = x1;
    col = y1;
    if (delta_x > 0)incx = 1;
    else if (delta_x == 0)incx = 0;
    else
    {
        incx = -1;
        delta_x = -delta_x;
    }
    if (delta_y > 0)incy = 1;
    else if (delta_y == 0)incy = 0;
    else
    {
        incy = -1;
        delta_y = -delta_y;
    }
    if (delta_x > delta_y)distance = delta_x;
    else distance = delta_y;
    for (t = 0; t <= distance + 1; t++)
    {
        luat_lcd_draw_point(conf,row, col,color);
        xerr += delta_x ;
        yerr += delta_y ;
        if (xerr > distance)
        {
            xerr -= distance;
            row += incx;
        }
        if (yerr > distance)
        {
            yerr -= distance;
            col += incy;
        }
    }
    return 0;
}

int luat_lcd_draw_rectangle(luat_lcd_conf_t* conf,int16_t x1, int16_t y1, int16_t x2, int16_t y2, luat_color_t color){
    luat_lcd_draw_line(conf,x1, y1, x2, y1, color);
    luat_lcd_draw_line(conf,x1, y1, x1, y2, color);
    luat_lcd_draw_line(conf,x1, y2, x2, y2, color);
    luat_lcd_draw_line(conf,x2, y1, x2, y2, color);
    return 0;
}

int luat_lcd_draw_circle(luat_lcd_conf_t* conf,int16_t x0, int16_t y0, uint8_t r, luat_color_t color){
    int a, b;
    int di;
    a = 0;
    b = r;
    di = 3 - (r << 1);
    while (a <= b)
    {
        luat_lcd_draw_point(conf,x0 - b, y0 - a,color);
        luat_lcd_draw_point(conf,x0 + b, y0 - a,color);
        luat_lcd_draw_point(conf,x0 - a, y0 + b,color);
        luat_lcd_draw_point(conf,x0 - b, y0 - a,color);
        luat_lcd_draw_point(conf,x0 - a, y0 - b,color);
        luat_lcd_draw_point(conf,x0 + b, y0 + a,color);
        luat_lcd_draw_point(conf,x0 + a, y0 - b,color);
        luat_lcd_draw_point(conf,x0 + a, y0 + b,color);
        luat_lcd_draw_point(conf,x0 - b, y0 + a,color);
        a++;
        //Bresenham
        if (di < 0)di += 4 * a + 6;
        else
        {
            di += 10 + 4 * (a - b);
            b--;
        }
        luat_lcd_draw_point(conf,x0 + a, y0 + b,color);
    }
    return 0;
}