yc_client/components/EPD/EPD.c

#include <stdio.h>
#include "EPD.h"
#include <string.h>

#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "GUI_Paint.h"
#include "freertos/timers.h"
// #include "../components/../main/user_sleep.h"
#include "esp_timer.h"

bool is_epd_ok = false;

#include "../../main/user_sleep.h"
#include "esp_sleep.h"

static const char *LOG_TAG = "EPD";

#if HARDWARE_SPI

spi_device_handle_t epd_spi;

// uint8_t cmd[1]={0};
// epd_write_cmd(screen,0x00,false);
// cmd[0] = 0x17;
// epd_write_data(screen,cmd,1);

// Place data into DRAM. Constant data gets placed into DROM by default, which is not accessible by DMA.
DRAM_ATTR static const epd_init_cmd_t init_cmds[] = {
    {0x00, {0x1f, 0x0E}, 2},
    {0x50, {0x18, 0x07}, 2},
    {0xe0, {0x02}, 1},
    {0xe5, {0x5c}, 1},
    {0x11, {0}, 0x80},
#if 0
    {0x00,{0x1B},1},
#else
//{0x00,{0x8F},1},
#endif

    {0, {0}, 0xff},
};
// This function is called (in irq context!) just before a transmission starts. It will
// set the D/C line to the value indicated in the user field.
static void spi_pre_transfer_callback(spi_transaction_t *t)
{
    int dc = (int)t->user;
    gpio_set_level(PIN_L_DC, dc);
    gpio_set_level(PIN_R_DC, dc);
}

#if 0
void epd_spi_write(struct EPD_INFO_SET* epd_pin_set,unsigned char value)
{
    int i = 0,data = value;
    epd_set_level(epd_pin_set->sclk_pin, LOW_LEVEL);

    for(i=0;i<8;i++)
    {
        if(data&0x0080)
        {
            epd_set_level(epd_pin_set->sda_pin,HIGH_LEVEL);
        }
        else
        {
            epd_set_level(epd_pin_set->sda_pin,LOW_LEVEL);
        }

        // ets_delay_us(1);
        epd_set_level(epd_pin_set->sclk_pin, HIGH_LEVEL);
        // ets_delay_us(1);
        epd_set_level(epd_pin_set->sclk_pin, LOW_LEVEL);
        
        data = ((data)<<1 & 0xff);
    }

}

#endif
esp_err_t user_spi_device_queue_trans(spi_device_handle_t handle, spi_transaction_t *trans_desc, TickType_t ticks_to_wait)
{
    is_epd_ok = false;
    return spi_device_queue_trans(handle, trans_desc, ticks_to_wait);
}
/*********************************************************************************
 * function   :   SPI_Write
 * Description :  spi写入数据
 * Input       :
 * Output      :
 * Author      :  祁鑫                  Data : 2023 8.11
 **********************************************************************************/
IRAM_ATTR void SPI_Write(unsigned char value)
{
    int i = 0, data = value;
    int j = 100;
    gpio_set_level(PIN_SPI_CLK, 0);
    for (i = 0; i < 8; i++)
    {
        if (data & 0x0080)
        {
            gpio_set_level(PIN_SPI_MOSI, 1);
            // EPD_SDA_1;
        }
        else
        {
            gpio_set_level(PIN_SPI_MOSI, 0);
            // EPD_SDA_0;
        }
        // vTaskDelay(1/ portTICK_PERIOD_MS);
        gpio_set_level(PIN_SPI_CLK, 1);
        // vTaskDelay(1/ portTICK_PERIOD_MS);
        gpio_set_level(PIN_SPI_CLK, 0);
        data = ((data << 1) & 0xff);
    }
}

// Initialize the display
void epd_init(void)
{
#if !SOFTWARE_SPI_ENABLE // 硬件spi
    esp_err_t ret;

    spi_bus_config_t buscfg = {
        .miso_io_num = -1,
        .mosi_io_num = PIN_SPI_MOSI,
        .sclk_io_num = PIN_SPI_CLK,
        .quadwp_io_num = -1,
        .quadhd_io_num = -1,
        .max_transfer_sz = 4096 // dma
    };
    spi_device_interface_config_t devcfg = {
        .clock_speed_hz = 20 * 1000 * 1000,  // Clock out at 10 MHz
        .mode = 0,                           // SPI mode 0
        .spics_io_num = -1,                  // CS pin
        .queue_size = 7,                     // We want to be able to queue 7 transactions at a time
        .pre_cb = spi_pre_transfer_callback, // Specify pre-transfer callback to handle D/C line
    };

    // Initialize the SPI bus
    ret = spi_bus_initialize(EPD_HOST, &buscfg, SPI_DMA_CH_AUTO);
    ESP_ERROR_CHECK(ret);

    // Attach the LCD to the SPI bus
    ret = spi_bus_add_device(EPD_HOST, &devcfg, &epd_spi);
    ESP_ERROR_CHECK(ret);

#else // 软件模拟spi

    gpio_reset_pin(PIN_SPI_MOSI);
    gpio_reset_pin(PIN_SPI_CLK);
    gpio_reset_pin(PIN_L_CS);

    gpio_reset_pin(PIN_L_DC);
    gpio_reset_pin(PIN_L_RST);
    gpio_reset_pin(PIN_L_BUSY);

    gpio_reset_pin(PIN_R_CS);
    gpio_reset_pin(PIN_R_DC);
    gpio_reset_pin(PIN_R_RST);
    gpio_reset_pin(PIN_R_BUSY);
#endif

    // gpio_reset_pin(PIN_L_CS);

    // Initialize non-SPI GPIOs
    gpio_config_t io_conf = {};
    io_conf.pin_bit_mask = PIN_EPD_OUTPUT;
    io_conf.mode = GPIO_MODE_OUTPUT;
    io_conf.pull_up_en = 0;
    gpio_config(&io_conf);

    io_conf.pin_bit_mask = PIN_EPD_INPUT;
    io_conf.mode = GPIO_MODE_INPUT;
    io_conf.pull_up_en = 0;
    gpio_config(&io_conf);

    // Reset the display

    int reson = is_wake_up_reson(); // 返回唤醒的原因
    if (
        1 //(reson != ESP_SLEEP_WAKEUP_ULP) && (reson != ESP_SLEEP_WAKEUP_TIMER) && (reson != ESP_SLEEP_WAKEUP_EXT0)
    )
    {

        gpio_set_level(PIN_L_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_L_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        gpio_set_level(PIN_R_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_R_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

#if 1
        int cmd = 0;
        // Send all the commands
        while (init_cmds[cmd].databytes != 0xff)
        {

#if 1
            epd_write_cmd(SCREEN_LEFT, init_cmds[cmd].cmd, false);
            epd_write_data(SCREEN_LEFT, init_cmds[cmd].data, init_cmds[cmd].databytes & 0x1F);

            epd_write_cmd(SCREEN_RIGHT, init_cmds[cmd].cmd, false);
            epd_write_data(SCREEN_RIGHT, init_cmds[cmd].data, init_cmds[cmd].databytes & 0x1F);
#endif
            if (init_cmds[cmd].databytes & 0x80)
            {
                vTaskDelay(100 / portTICK_PERIOD_MS);
            }
            cmd++;
        }
#endif
    }

#if QUICK_DISPLAY
    uint8_t *old_buffer = heap_caps_malloc(480 * 81, MALLOC_CAP_8BIT);
    memset(old_buffer, 0X00, 480 * 81);
    epd_cache_quick_full_screen_refresh(SCREEN_LEFT, NULL, old_buffer);
    epd_write_cmd(SCREEN_LEFT, 0x04, false); // POWER ON
    epd_check_status(SCREEN_LEFT);           // waiting for the electronic paper IC to release the idle signal
    // Refresh
    epd_refresh(SCREEN_LEFT);
    epd_write_cmd(SCREEN_LEFT, 0x02, false); // Power OFF
    epd_check_status(SCREEN_LEFT);

    epd_sleep(SCREEN_LEFT);

    free(old_buffer);
#else

#endif
}

void epd_init_cmd(screen_t screen)
{

    if (screen == SCREEN_LEFT)
    {
        gpio_set_level(PIN_L_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_L_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        int cmd = 0;
        // Send all the commands
        while (init_cmds[cmd].databytes != 0xff)
        {

#if 1
            epd_write_cmd(SCREEN_LEFT, init_cmds[cmd].cmd, false);
            epd_write_data(SCREEN_LEFT, init_cmds[cmd].data, init_cmds[cmd].databytes & 0x1F);

#endif
            if (init_cmds[cmd].databytes & 0x80)
            {
                vTaskDelay(10 / portTICK_PERIOD_MS);
            }
            cmd++;
        }
    }

    if (screen == SCREEN_RIGHT)
    {
        gpio_set_level(PIN_R_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_R_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        int cmd = 0;
        // Send all the commands
        while (init_cmds[cmd].databytes != 0xff)
        {

#if 1
            epd_write_cmd(SCREEN_RIGHT, init_cmds[cmd].cmd, false);
            epd_write_data(SCREEN_RIGHT, init_cmds[cmd].data, init_cmds[cmd].databytes & 0x1F);
#endif
            if (init_cmds[cmd].databytes & 0x80)
            {
                vTaskDelay(100 / portTICK_PERIOD_MS);
            }
            cmd++;
        }
    }
}
esp_err_t user_spi_get_result(spi_device_handle_t spi)
{
    spi_transaction_t *rtrans = NULL;
    return spi_device_get_trans_result(spi, &rtrans, 10000);
}
static void spi_get_result(spi_device_handle_t spi)
{
    spi_transaction_t *rtrans = NULL;
    esp_err_t ret;
    ret = spi_device_get_trans_result(spi, &rtrans, portMAX_DELAY);
    if (ret == ESP_OK)
    {
        is_epd_ok = true;
        // printf("->%s\n", esp_err_to_name(ret));
    }
    else
    {
        printf("->%s\n", esp_err_to_name(ret));
        is_epd_ok = false;
    }

    // assert(ret==ESP_OK);
}

void epd_cmd(spi_device_handle_t spi, const uint8_t cmd, bool keep_cs_active)
{
#if !SOFTWARE_SPI_ENABLE
    esp_err_t ret;
    spi_transaction_t t;
    memset(&t, 0, sizeof(t)); // Zero out the transaction
    t.length = 8;             // Command is 8 bits
    t.tx_buffer = &cmd;       // The data is the cmd itself
    t.user = (void *)0;       // D/C needs to be set to 0
    if (keep_cs_active)
    {
        t.flags = SPI_TRANS_CS_KEEP_ACTIVE; // Keep CS active after data transfer
    }
    ret = user_spi_device_queue_trans(spi, &t, portMAX_DELAY);

    // assert(ret==ESP_OK);            //Should have had no issues.
    spi_get_result(spi);
#else
    SPI_Write(cmd);

#endif
}

void epd_data(spi_device_handle_t spi, const uint8_t *data, int len)
{
#if !SOFTWARE_SPI_ENABLE
    esp_err_t ret;
    spi_transaction_t t;
    int i;
    if (len == 0)
        return; // no need to send anything
    if (len > SPI_MAX_LEN)
    {
        for (i = 0; i < len; i = i + SPI_MAX_LEN)
        {
            memset(&t, 0, sizeof(t));                             // Zero out the transaction
            t.length = SPI_MAX_LEN * 8;                           // Len is in bytes, transaction length is in bits.
            t.tx_buffer = data + i;                               // Data
            t.user = (void *)1;                                   // D/C needs to be set to 1
            ret = user_spi_device_queue_trans(spi, &t, portMAX_DELAY); // Transmit!
            // assert(ret==ESP_OK);            //Should have had no issues.
            spi_get_result(spi);
        }
        i -= SPI_MAX_LEN;
        memset(&t, 0, sizeof(t));                             // Zero out the transaction
        t.length = (len - i) * 8;                             // Len is in bytes, transaction length is in bits.
        t.tx_buffer = data + i;                               // Data
        t.user = (void *)1;                                   // D/C needs to be set to 1
        ret = user_spi_device_queue_trans(spi, &t, portMAX_DELAY); // Transmit!
        assert(ret == ESP_OK);                                // Should have had no issues.
        spi_get_result(spi);
        return;
    }

    memset(&t, 0, sizeof(t));                             // Zero out the transaction
    t.length = len * 8;                                   // Len is in bytes, transaction length is in bits.
    t.tx_buffer = data;                                   // Data
    t.user = (void *)1;                                   // D/C needs to be set to 1
    ret = user_spi_device_queue_trans(spi, &t, portMAX_DELAY); // Transmit!
    // assert(ret==ESP_OK);            //Should have had no issues.
    if (ret != ESP_OK)
    {
        printf("spi_device_queue_trans err:ret =%d", ret);
    }
    spi_get_result(spi);
#else

    {
        for (int i = 0; i < len; i++)
        {
            SPI_Write(data[i]);
        }
    }

#endif
}

void epd_write_cmd(screen_t screen, unsigned char command, bool keep_cs_active)
{
    if (screen == SCREEN_LEFT)
    {
        gpio_set_level(PIN_R_CS, 1);
        gpio_set_level(PIN_L_CS, 0);

        gpio_set_level(PIN_L_DC, 0);

        epd_cmd(epd_spi, command, keep_cs_active);
        gpio_set_level(PIN_R_CS, 1);
        gpio_set_level(PIN_L_CS, 1);
    }
    else if (screen == SCREEN_RIGHT)
    {
        gpio_set_level(PIN_L_CS, 1);
        gpio_set_level(PIN_R_CS, 0);

        gpio_set_level(PIN_R_DC, 0);
        epd_cmd(epd_spi, command, keep_cs_active);
        gpio_set_level(PIN_L_CS, 1);
        gpio_set_level(PIN_R_CS, 1);
    }
    else
    {
        ESP_LOGE(LOG_TAG, "cmd err:screen");
    }
}
void epd_write_data(screen_t screen, const uint8_t *data, int len)
{
    if (screen == SCREEN_LEFT)
    {
        gpio_set_level(PIN_R_CS, 1);
        gpio_set_level(PIN_L_CS, 0);

        gpio_set_level(PIN_L_DC, 1);
        epd_data(epd_spi, data, len);
        gpio_set_level(PIN_L_CS, 1);
    }
    else if (screen == SCREEN_RIGHT)
    {
        gpio_set_level(PIN_L_CS, 1);
        gpio_set_level(PIN_R_CS, 0);

        gpio_set_level(PIN_R_DC, 1);
        epd_data(epd_spi, data, len);
        gpio_set_level(PIN_R_CS, 1);
    }
    else
    {
        ESP_LOGE(LOG_TAG, "data err:screen");
    }
}
bool epd_check_status(screen_t screen)
{

#if 0 // 死等
    if(screen == SCREEN_LEFT)
    {
        while(!gpio_get_level(PIN_L_BUSY))
        {

        };
    }
    else if(screen == SCREEN_RIGHT)
    {
        while(!gpio_get_level(PIN_R_BUSY));
    }
    else
    {
        ESP_LOGE(LOG_TAG,"check err:screen");
    }
#else

    int count = 0;
    unsigned char busy;
    int64_t t_after_us = 0;
    int64_t t_before_us = esp_timer_get_time();
    // while(1)
    {

        //=1 BUSY
        if (screen == SCREEN_LEFT)
        {
            while (1)
            {

                busy = gpio_get_level(PIN_L_BUSY);
                busy = (busy & 0x01);
                if (busy == 1)
                {
                    // printf("left lcd idle\r\n");
                    break;
                }
#if 0
            vTaskDelay(10 / portTICK_PERIOD_MS);  
                            count ++;
            if(count >= 200){
            printf("l---------------time out ---\n");
                break;                  
            }
#else
                t_after_us = esp_timer_get_time();
                if ((t_after_us - t_before_us) > 1000 * 1000)
                {
                    printf("t_before_us =%lld ,t_after_us = %lld\n", t_before_us, t_after_us);
                    return 0;
                    break;
                }
#endif
            }
        }
        else if (screen == SCREEN_RIGHT)
        {
            // while(!gpio_get_level(PIN_R_BUSY));

            while (1)
            {
                busy = gpio_get_level(PIN_R_BUSY);
                busy = (busy & 0x01);
                if (busy == 1)
                {
                    // printf("right lcd idle\r\n");
                    break;
                }
#if 0 
                vTaskDelay(10 / portTICK_PERIOD_MS);  
                                count ++;
                if(count >= 200){
                printf("r---------------time out ---\n");
                 break;                  
                }
#else
                t_after_us = esp_timer_get_time();
                if ((t_after_us - t_before_us) > 1000 * 1000)
                {
                    printf(" r t_before_us =%lld ,t_after_us = %lld\n", t_before_us, t_after_us);
                    return 0;
                    break;
                }
#endif
            }
        }
        else
        {
            ESP_LOGE(LOG_TAG, "check err:screen");
        }
    }

#endif
    return 1;
}

void deepsleep_epd_check_status(screen_t screen)
{

    if (screen == SCREEN_LEFT)
    {
        while (!gpio_get_level(PIN_L_BUSY))
            ;
    }
    else if (screen == SCREEN_RIGHT)
    {
        while (!gpio_get_level(PIN_R_BUSY))
            ;
    }
    else
    {
        ESP_LOGE(LOG_TAG, "check err:screen");
    }
}

void epd_check_power_off(screen_t screen)
{

    if (screen == SCREEN_LEFT)
    {
        while (gpio_get_level(PIN_L_BUSY))
        {
            vTaskDelay(20 / portTICK_PERIOD_MS);
            printf("left power off\r\n");
        }
    }
    else if (screen == SCREEN_RIGHT)
    {
        while (gpio_get_level(PIN_R_BUSY))
        {
            vTaskDelay(20 / portTICK_PERIOD_MS);
            printf("right power off\r\n");
        }
    }
    else
    {
        ESP_LOGE(LOG_TAG, "check err:screen");
    }
}

void epd_check_power_on(screen_t screen)
{

    if (screen == SCREEN_LEFT)
    {

        while (gpio_get_level(PIN_L_BUSY))
        {
            printf("left power on\r\n");
        }
    }
    else if (screen == SCREEN_RIGHT)
    {
        while (gpio_get_level(PIN_R_BUSY))
        {
            printf("right power on\r\n");
        }
    }
    else
    {
        ESP_LOGE(LOG_TAG, "check err:screen");
    }
}

void epd_refresh(screen_t screen)
{
    epd_write_cmd(screen, 0x12, false); // DISPLAY REFRESH
    // ets_delay_us(200); //!!!The delay here is necessary, 200uS at least!!!
    // vTaskDelay(1 / portTICK_PERIOD_MS);
    epd_check_status(screen); // waiting for the electronic paper//时间较长
}
void epd_sleep(screen_t screen)
{

    // printf("SLEEP SCREEN =%d\r\n",screen);

#if 0
    epd_write_cmd(screen,0x04,false);  // Power ON 
    
    epd_check_power_on(screen);

#endif
    // epd_check_status(screen);

    // epd_refresh(screen);

    uint8_t tmp = 0xa5;
    epd_write_cmd(screen, 0x07, false);
    epd_write_data(screen, &tmp, 1);

    // vTaskDelay(20 / portTICK_PERIOD_MS);
#if 0
    epd_write_cmd(screen,0x02,false);  // Power OFF
     vTaskDelay(20 / portTICK_PERIOD_MS); 
     epd_check_power_off(screen);
#endif
#if 1
// epd_write_cmd(screen,0x02,false); // Power OFF
// epd_check_status(screen);
#endif
}

IRAM_ATTR void epd_display(screen_t screen, const unsigned char *picData)
{
    epd_write_cmd(screen, 0x13, false);
    epd_check_status(screen);
    epd_write_data(screen, picData, 38880);
    epd_check_status(screen);
    epd_write_cmd(screen, 0x04, false); // POWER ON
    epd_check_status(screen);           // waiting for the electronic paper IC to release the idle signal
    // Refresh
    epd_refresh(screen);

    epd_write_cmd(screen, 0x02, false); // Power OFF
    epd_check_status(screen);
    epd_sleep(screen);
}
#if 1
void epd_cache(screen_t screen, const unsigned char *picData)
{
    epd_write_cmd(screen, 0x13, false);
    epd_write_data(screen, picData, 38880);
}

void epd_cache_quick_full_screen_refresh(screen_t screen, const unsigned char *old, const unsigned char *new)
{

    if ((screen == SCREEN_LEFT) && (old != NULL))
    {
        printf("left quick\r\n");
        // Reset the display
        gpio_set_level(PIN_L_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_L_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        uint8_t cmd[1] = {0};
        epd_write_cmd(screen, 0x00, false);
        cmd[0] = 0x1F;
        epd_write_data(screen, cmd, 1);
#if 0

        uint8_t cmd[1]={0};

        epd_write_cmd(screen,0x61,false);
        cmd[0] = 0xF0;
        epd_write_data(screen,cmd,1);
        cmd[0] = 0x01;
        epd_write_data(screen,cmd,1);

        cmd[0] = 0xA0;
        epd_write_data(screen,cmd,1);
#endif
#if 0
    int cmd=0;
    //Send all the commands
    while (init_cmds[cmd].databytes!=0xff) {
        epd_write_cmd(SCREEN_LEFT, init_cmds[cmd].cmd, false);
        epd_write_data(SCREEN_LEFT, init_cmds[cmd].data, init_cmds[cmd].databytes&0x1F);

        epd_write_cmd(SCREEN_RIGHT, init_cmds[cmd].cmd, false);
        epd_write_data(SCREEN_RIGHT, init_cmds[cmd].data, init_cmds[cmd].databytes&0x1F);
        if (init_cmds[cmd].databytes&0x80) {
            vTaskDelay(100 / portTICK_PERIOD_MS);
        }
        cmd++;
    }
#endif
    }

    if ((screen == SCREEN_RIGHT) && (old != NULL))
    {

        printf("right quick\r\n");
        gpio_set_level(PIN_R_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_R_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        // uint8_t cmd[1]={0};
        // epd_write_cmd(screen,0x00,false);
        // cmd[0] = 0x1F;
        // epd_write_data(screen,cmd,1);

#if 0
        uint8_t cmd[1]={0};

        epd_write_cmd(screen,0x61,false);
        cmd[0] = 0xF0;
        epd_write_data(screen,cmd,1);
        cmd[0] = 0x01;
        epd_write_data(screen,cmd,1);

        cmd[0] = 0xA0;
        epd_write_data(screen,cmd,1);
#endif
#if 0
    int cmd=0;
    //Send all the commands
    while (init_cmds[cmd].databytes!=0xff) {
        epd_write_cmd(SCREEN_LEFT, init_cmds[cmd].cmd, false);
        epd_write_data(SCREEN_LEFT, init_cmds[cmd].data, init_cmds[cmd].databytes&0x1F);

        epd_write_cmd(SCREEN_RIGHT, init_cmds[cmd].cmd, false);
        epd_write_data(SCREEN_RIGHT, init_cmds[cmd].data, init_cmds[cmd].databytes&0x1F);
        if (init_cmds[cmd].databytes&0x80) {
            vTaskDelay(100 / portTICK_PERIOD_MS);
        }
        cmd++;
    }

#endif
    }

    if (old != NULL)
    {

        epd_write_cmd(screen, 0x10, false);
        epd_check_status(screen);
        epd_write_data(screen, old, 38880);
    }

#if 0
        uint8_t cmd[1]={0};
        epd_write_cmd(screen,0x61,false);
        cmd[0] = 0xF0;
        epd_write_data(screen,cmd,1);
        cmd[0] = 0x01;
        epd_write_data(screen,cmd,1);

        cmd[0] = 0xA0;
        epd_write_data(screen,cmd,1);
#endif

    epd_write_cmd(screen, 0x13, false);
    epd_write_data(screen, new, 38880);
}
#endif
void epd_display_partal(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,
                        screen_t screen, const unsigned char *picData)
{
    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(screen, 0x91, false); // partial in
    epd_check_status(screen);

    epd_write_cmd(screen, 0x90, false);
    epd_check_status(screen);

    epd_write_data(screen, &Xstart_H, 1);
    epd_write_data(screen, &Xstart_L, 1);

    epd_write_data(screen, &Xend_H, 1);
    epd_write_data(screen, &Xend_L, 1);

    epd_write_data(screen, &Ystart_H, 1);
    epd_write_data(screen, &Ystart_L, 1);

    epd_write_data(screen, &Yend_H, 1);
    epd_write_data(screen, &Yend_L, 1);
    uint8_t tmp = 0x01;
    epd_write_data(screen, &tmp, 1);

    epd_write_cmd(screen, 0x13, false);
    epd_check_status(screen);

    epd_write_data(screen, picData, ((Yend - Ystart) * (Xend - Xstart) / 8));

    epd_write_cmd(screen, 0x92, false);

    epd_write_cmd(screen, 0x04, false); // Power ON
    epd_check_status(screen);

    epd_refresh(screen);

    epd_write_cmd(screen, 0x02, false); // Power OFF
    epd_check_status(screen);
}

void epd_partial_cache(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,
                       screen_t screen, const unsigned char *picData)
{
    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(screen, 0x91, false); // partial in
    epd_check_status(screen);

    epd_write_cmd(screen, 0x90, false);
    epd_check_status(screen);

    epd_write_data(screen, &Xstart_H, 1);
    epd_write_data(screen, &Xstart_L, 1);

    epd_write_data(screen, &Xend_H, 1);
    epd_write_data(screen, &Xend_L, 1);

    epd_write_data(screen, &Ystart_H, 1);
    epd_write_data(screen, &Ystart_L, 1);

    epd_write_data(screen, &Yend_H, 1);
    epd_write_data(screen, &Yend_L, 1);
    uint8_t tmp = 0x01;
    epd_write_data(screen, &tmp, 1);

    epd_write_cmd(screen, 0x13, false);
    epd_check_status(screen);

    epd_write_data(screen, picData, ((Yend - Ystart) * (Xend - Xstart) / 8));

    epd_write_cmd(screen, 0x92, false);
}

void epd_cache_quick_partial_screen_refresh(screen_t screen, uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend, const unsigned char *old, const unsigned char *new)
{

    if ((screen == SCREEN_LEFT) && (old != NULL))
    {
        printf("left partial quick\r\n");
        // Reset the display
        gpio_set_level(PIN_L_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_L_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);

        uint8_t cmd[1] = {0};
        epd_write_cmd(screen, 0x00, false);
        cmd[0] = 0x1F;
        epd_write_data(screen, cmd, 1);
    }

    if ((screen == SCREEN_RIGHT) && (old != NULL))
    {
        printf("right partial quick\r\n");
        gpio_set_level(PIN_R_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_R_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);
    }

#if 0
    if (old !=NULL)
    {

         epd_write_cmd(screen,0x10,false);
         epd_write_data(screen,old,38880);
    }
    epd_write_cmd(screen,0x13,false);
    epd_write_data(screen,new,38880);
#endif

    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(screen, 0x91, false); // partial in
    epd_check_status(screen);

    epd_write_cmd(screen, 0x90, false);
    epd_check_status(screen);

    epd_write_data(screen, &Xstart_H, 1);
    epd_write_data(screen, &Xstart_L, 1);

    epd_write_data(screen, &Xend_H, 1);
    epd_write_data(screen, &Xend_L, 1);

    epd_write_data(screen, &Ystart_H, 1);
    epd_write_data(screen, &Ystart_L, 1);

    epd_write_data(screen, &Yend_H, 1);
    epd_write_data(screen, &Yend_L, 1);
    uint8_t tmp = 0x01;
    epd_write_data(screen, &tmp, 1);

    // epd_write_cmd(screen,0x13,false);
    // epd_check_status(screen);

    printf("1\r\n");
    if (old != NULL)
    {
        printf("2\r\n");
        epd_write_cmd(screen, 0x10, false);
        epd_check_status(screen);
        epd_write_data(screen, old, ((Yend - Ystart) * (Xend - Xstart) / 8));
        epd_write_cmd(screen, 0x92, false);
    }
    printf("3\r\n");
    epd_write_cmd(screen, 0x13, false);
    epd_check_status(screen);
    epd_write_data(screen, new, ((Yend - Ystart) * (Xend - Xstart) / 8));
    epd_write_cmd(screen, 0x92, false);
}

static uint8_t get_data(uint8_t *color, uint8_t pix_size)
{
    uint8_t data = 0;
    int i = 0, j = 0;
    for (i = 0; i < 8; i++)
    {
        data = data | (color[j] << (7 - i));
        j = j + pix_size;
    }
    return data;
}

void epd_partial_cache1(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,
                        screen_t screen, const unsigned char *picData)
{
    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(screen, 0x91, false); // partial in
    epd_check_status(screen);

    epd_write_cmd(screen, 0x90, false);
    epd_check_status(screen);

    epd_write_data(screen, &Xstart_H, 1);
    epd_write_data(screen, &Xstart_L, 1);

    epd_write_data(screen, &Xend_H, 1);
    epd_write_data(screen, &Xend_L, 1);

    epd_write_data(screen, &Ystart_H, 1);
    epd_write_data(screen, &Ystart_L, 1);

    epd_write_data(screen, &Yend_H, 1);
    epd_write_data(screen, &Yend_L, 1);
    uint8_t tmp = 0x01;
    epd_write_data(screen, &tmp, 1);

    epd_write_cmd(screen, 0x13, false);
    epd_check_status(screen);

#if 0
    epd_write_data(screen,picData,((Yend - Ystart)*(Xend - Xstart)));
#else
    uint8_t data;
    //     disp_drv.hor_res = 648;
    // disp_drv.ver_res = 480;
    for (int i = 480 - 1; i >= 0; i--)
    {
        for (int j = 0; j < 648;)
        {
            data = get_data(&picData[j + i * 648 * 1], 1);
            // printf("%02x",data);
            epd_write_data(screen, &data, 1);

            j = j + 8 * 1;
        }
    }
#endif

    epd_write_cmd(screen, 0x92, false);
}

void epd_powerOn_refresh(screen_t screen)
{
    epd_write_cmd(screen, 0x04, false); // Power ON
    epd_check_status(screen);

    epd_refresh(screen);

    epd_write_cmd(screen, 0x02, false); // Power OFF
    epd_check_status(screen);
}

// 定义最大重复计数
#define MAX_REPEAT 255

// 压缩函数
unsigned int compressRLE(uint8_t *input, unsigned int size, uint8_t *output)
{
    unsigned int i = 0;
    unsigned int outputSize = 0;
    while (i < size)
    {
        uint8_t current = input[i];
        unsigned int count = 1;
        i++;
        while (i < size && input[i] == current && count < MAX_REPEAT)
        {
            count++;
            i++;
        }
        // 输出像素值和计数值到output
        output[outputSize++] = current;
        output[outputSize++] = count;
    }
    return outputSize;
}

// 解压函数
unsigned int decompressRLE(uint8_t *input, unsigned int size, uint8_t *output)
{
    unsigned int i = 0;
    unsigned int outputSize = 0;
    while (i < size)
    {
        uint8_t current = input[i];
        i++;
        unsigned int count = input[i];
        i++;
        // 输出像素值count次到output
        for (unsigned int j = 0; j < count; j++)
        {
            output[outputSize++] = current;
        }
    }
    return outputSize;
}

void test()
{

    // 定义图像数据（十六进制数组）
    uint8_t imageData[] = {0x12, 0x12, 0x12, 0x13, 0x14, 0x14, 0x14, 0x15, 0x15, 0x15};

    int imageSize = sizeof(imageData) / sizeof(imageData[0]);

    printf("原始图像数据：\n");
    for (int i = 0; i < imageSize; i++)
    {
        printf("0x%02X ", imageData[i]);
    }
    printf("\n");

    uint8_t compressedData[2 * imageSize]; // 假设压缩后的数据不会超过原数据的两倍大小
    uint8_t decompressedData[imageSize];   // 假设解压后的数据不会超过原数据大小

    printf("压缩后的数据：\n");
    int compressedSize = compressRLE(imageData, imageSize, compressedData);
    for (int i = 0; i < compressedSize; i++)
    {
        printf("0x%02X ", compressedData[i]);
    }
    printf("\n");

    printf("解压后的数据：\n");
    int decompressedSize = decompressRLE(compressedData, compressedSize, decompressedData);
    for (int i = 0; i < decompressedSize; i++)
    {
        printf("0x%02X ", decompressedData[i]);
    }
    printf("\n");

    printf("压缩后的数据大小：%d 字节\n", compressedSize);
    printf("解压后的数据大小：%d 字节\n", decompressedSize);
}
// uint8_t tmp[38880];
IRAM_ATTR bool epd_cache_quick(screen_t screen, const unsigned char *old, const unsigned char *new)
{
    bool ret = false;
    if ((screen == SCREEN_LEFT) && (old != NULL))
    {
        printf("SCREEN_LEFT quick\r\n");
        // Reset the display
        gpio_set_level(PIN_L_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_L_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        ret = epd_check_status(screen);
        if (!ret)
        {
            printf("err:2busy ！！！！！\n");
            goto err;
        }

        uint8_t cmd[1] = {0};
        epd_write_cmd(screen, 0x00, false);
        cmd[0] = 0x1F;
        epd_write_data(screen, cmd, 1);
    }

    if ((screen == SCREEN_RIGHT) && (old != NULL))
    {
        printf("SCREEN_RIGHT quick\r\n");
        gpio_set_level(PIN_R_RST, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(PIN_R_RST, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        ret = epd_check_status(screen);
        if (!ret)
        {
            printf("err:3busy ！！！！！\n");
            goto err;
        }
        uint8_t cmd2[1] = {0};
        epd_write_cmd(screen, 0x00, false);
        cmd2[0] = 0x1F;
        epd_write_data(screen, cmd2, 1);
    }
#if 1
    if (old != NULL)
    {
        epd_write_cmd(screen, 0x10, false);
        ret = epd_check_status(screen);
        if (!ret)
        {
            printf("err:busy ！！！！！\n");
            goto err;
        }
        epd_write_data(screen, old, 38880);
        ret = epd_check_status(screen);
        if (!ret)
        {
            printf("err:2busy ！！！！！\n");
            goto err;
        }
    }
#else
    epd_write_cmd(screen, 0x10, false);
    epd_check_status(screen);
    memcpy(&tmp, new, 38880);
    for (int i = 0; i < 38880; i++)
    {
        tmp[i] = ~tmp[i];
    }
    epd_write_data(screen, &tmp, 38880);
#endif
    epd_write_cmd(screen, 0x13, false);
    ret = epd_check_status(screen);
    if (!ret)
    {
        printf("err:2busy ！！！！！\n");
        goto err;
    }
    epd_write_data(screen, new, 38880);
    ret = epd_check_status(screen);
    if (!ret)
    {
        printf("err:2busy ！！！！！\n");
        goto err;
    }

#if 0
        if(screen == SCREEN_LEFT)
    {
         left_refresh_complete = true;   
    }


    if(screen == SCREEN_RIGHT)
    {
        right_refresh_complete = true;
    }
#else

    // vTaskDelay(0000 / portTICK_PERIOD_MS);
    // refresh_timer_start(500);
    // xTimerStart(slow_display_timer, 0); //开始定时器

#endif
    return true;
err:
    ESP_LOGE(LOG_TAG, "err:epd_check_status");
    return false;
}
void epd_powerOn_refresh_sleep(screen_t screen)
{
    epd_write_cmd(screen, 0x04, false); // Power ON
    epd_check_status(screen);

    epd_refresh(screen);
    epd_sleep(screen);
}

void deepsleep_epd_powerOn_refresh_sleep(screen_t screen)
{
    epd_write_cmd(screen, 0x04, false); // Power ON
    // epd_check_status(screen);
    deepsleep_epd_check_status(screen);

    epd_write_cmd(screen, 0x12, false); // DISPLAY REFRESH
    deepsleep_epd_check_status(screen);
    // epd_refresh(screen);
    // epd_sleep(screen);
}

#else /*HAREWARE_SPI*/

static void task_delay_ms(uint32_t ms_count)
{
    vTaskDelay(ms_count / portTICK_PERIOD_MS);
}

void epd_pin_init(struct EPD_INFO_SET *epd_pin_set)
{
    esp_log_level_set("gpio", ESP_LOG_NONE); // close gpio logging
    ESP_LOGI(LOG_TAG, "epd_pin_init");
#define EPD_OUT_PIN_SEL ((1ULL << epd_pin_set->sclk_pin) | \
                         (1ULL << epd_pin_set->sda_pin) |  \
                         (1ULL << epd_pin_set->res_pin) |  \
                         (1ULL << epd_pin_set->dc_pin) |   \
                         (1ULL << epd_pin_set->cs_pin))

#define EPD_IN_PIN_SEL (1ULL << epd_pin_set->busy_pin)

    gpio_config_t epd_pin_cfg = {};

    epd_pin_cfg.intr_type = GPIO_INTR_DISABLE;
    epd_pin_cfg.mode = GPIO_MODE_OUTPUT;
    epd_pin_cfg.pin_bit_mask = EPD_OUT_PIN_SEL;
    epd_pin_cfg.pull_down_en = 0;
    epd_pin_cfg.pull_up_en = 0;
    gpio_config(&epd_pin_cfg);

    epd_pin_cfg.intr_type = GPIO_INTR_DISABLE;
    epd_pin_cfg.mode = GPIO_MODE_INPUT;
    epd_pin_cfg.pin_bit_mask = EPD_IN_PIN_SEL;
    epd_pin_cfg.pull_down_en = 0;
    epd_pin_cfg.pull_up_en = 1;
    gpio_config(&epd_pin_cfg);
    esp_log_level_set("gpio", LOG_LOCAL_LEVEL);
}

void epd_spi_write(struct EPD_INFO_SET *epd_pin_set, unsigned char value)
{
    int i = 0, data = value;
    epd_set_level(epd_pin_set->sclk_pin, LOW_LEVEL);

    for (i = 0; i < 8; i++)
    {
        if (data & 0x0080)
        {
            epd_set_level(epd_pin_set->sda_pin, HIGH_LEVEL);
        }
        else
        {
            epd_set_level(epd_pin_set->sda_pin, LOW_LEVEL);
        }

        // ets_delay_us(1);
        epd_set_level(epd_pin_set->sclk_pin, HIGH_LEVEL);
        // ets_delay_us(1);
        epd_set_level(epd_pin_set->sclk_pin, LOW_LEVEL);

        data = ((data) << 1 & 0xff);
    }
}

void epd_write_cmd(struct EPD_INFO_SET *epd_pin_set, unsigned char command)
{
    epd_set_level(epd_pin_set->cs_pin, LOW_LEVEL);
    epd_set_level(epd_pin_set->dc_pin, LOW_LEVEL);
    epd_spi_write(epd_pin_set, command);
    epd_set_level(epd_pin_set->cs_pin, HIGH_LEVEL);
}

void epd_write_data(struct EPD_INFO_SET *epd_pin_set, unsigned char command)
{
    epd_set_level(epd_pin_set->cs_pin, LOW_LEVEL);
    epd_set_level(epd_pin_set->dc_pin, HIGH_LEVEL);
    epd_spi_write(epd_pin_set, command);
    epd_set_level(epd_pin_set->cs_pin, HIGH_LEVEL);
    // ets_delay_us(2);
}
void epd_init(struct EPD_INFO_SET *epd_pin_set)
{
    epd_set_level(epd_pin_set->res_pin, LOW_LEVEL);
    task_delay_ms(10);
    epd_set_level(epd_pin_set->res_pin, HIGH_LEVEL);
    task_delay_ms(10);
}

void epd_check_status(struct EPD_INFO_SET *epd_pin_set)
{
    while (!epd_get_level(epd_pin_set->busy_pin))
        ;
}

void epd_refresh(struct EPD_INFO_SET *epd_pin_set)
{
    epd_write_cmd(epd_pin_set, 0x12); // DISPLAY REFRESH
    // ets_delay_us(200); //!!!The delay here is necessary, 200uS at least!!!
    task_delay_ms(1);
    epd_check_status(epd_pin_set); // waiting for the electronic paper
}

void epd_sleep(struct EPD_INFO_SET *epd_pin_set)
{
    epd_write_cmd(epd_pin_set, 0x07);
    epd_write_data(epd_pin_set, 0xa5);
}

void epd_screen_init(struct EPD_INFO_SET *epd_pin_set)
{
    epd_pin_init(epd_pin_set);

    epd_init(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x00);
    epd_write_data(epd_pin_set, 0x1f);
    epd_write_data(epd_pin_set, 0x09);

    epd_write_cmd(epd_pin_set, 0x50);
    epd_write_data(epd_pin_set, 0x18);
    epd_write_data(epd_pin_set, 0x07);

    epd_write_cmd(epd_pin_set, 0xe0);
    epd_write_data(epd_pin_set, 0x02);

    epd_write_cmd(epd_pin_set, 0xe5);
    epd_write_data(epd_pin_set, 0x5c);
}
void epd_clear_black(struct EPD_INFO_SET *epd_pin_set)
{
    unsigned int i;

    epd_write_cmd(epd_pin_set, 0x13);
    for (i = 0; i < 38880; i++)
    {
        epd_write_data(epd_pin_set, 0xff);
    }

    epd_write_cmd(epd_pin_set, 0x04); // POWER ON
    epd_check_status(epd_pin_set);    // waiting for the electronic paper IC to release the idle signal

    epd_refresh(epd_pin_set);
    epd_write_cmd(epd_pin_set, 0x02); // Power OFF
    epd_check_status(epd_pin_set);
}

void epd_clear_write(struct EPD_INFO_SET *epd_pin_set)
{
    unsigned int i;

    epd_write_cmd(epd_pin_set, 0x13);
    for (i = 0; i < 38880; i++)
    {
        epd_write_data(epd_pin_set, 0x00);
    }

    epd_write_cmd(epd_pin_set, 0x04); // POWER ON
    epd_check_status(epd_pin_set);    // waiting for the electronic paper IC to release the idle signal
    // Refresh
    epd_refresh(epd_pin_set);
    epd_write_cmd(epd_pin_set, 0x02); // Power OFF
    epd_check_status(epd_pin_set);
}

// PAINT left_screen_paint;
// PAINT right_screen_paint;
void epd_display(struct EPD_INFO_SET *epd_pin_set, const unsigned char *picData)
{
    unsigned int i;

    epd_write_cmd(epd_pin_set, 0x13);
    for (i = 0; i < 38880; i++)
    {
        epd_write_data(epd_pin_set, picData[i]);
    }

    epd_write_cmd(epd_pin_set, 0x04); // POWER ON
    epd_check_status(epd_pin_set);    // waiting for the electronic paper IC to release the idle signal
    // Refresh
    epd_refresh(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x02); // Power OFF
    epd_check_status(epd_pin_set);
}
void epd_cache(struct EPD_INFO_SET *epd_pin_set, const unsigned char *picData)
{
    unsigned int i;

    epd_write_cmd(epd_pin_set, 0x13);
    for (i = 0; i < 38880; i++)
    {
        epd_write_data(epd_pin_set, picData[i]);
    }
}

void epd_display_partal(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,
                        struct EPD_INFO_SET *epd_pin_set, const unsigned char *picData)
{
    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(epd_pin_set, 0x91); // partial in
    epd_check_status(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x90);
    epd_check_status(epd_pin_set);

    epd_write_data(epd_pin_set, Xstart_H);
    epd_write_data(epd_pin_set, Xstart_L);

    epd_write_data(epd_pin_set, Xend_H);
    epd_write_data(epd_pin_set, Xend_L);

    epd_write_data(epd_pin_set, Ystart_H);
    epd_write_data(epd_pin_set, Ystart_L);

    epd_write_data(epd_pin_set, Yend_H);
    epd_write_data(epd_pin_set, Yend_L);

    epd_write_data(epd_pin_set, 0x01);

    epd_write_cmd(epd_pin_set, 0x13);
    epd_check_status(epd_pin_set);

    int i = 0;

    for (col = 0; col < (Yend - Ystart); col++)
    {
        for (row = 0; row < ((Xend - Xstart) / 8); row++)
        {
            epd_write_data(epd_pin_set, picData[i++]);
        }
    }

    epd_write_cmd(epd_pin_set, 0x92);

    epd_write_cmd(epd_pin_set, 0x04); // Power ON
    epd_check_status(epd_pin_set);

    epd_refresh(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x02); // Power OFF
    epd_check_status(epd_pin_set);
}

void epd_partial_cache(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,
                       struct EPD_INFO_SET *epd_pin_set, const unsigned char *picData)
{
    unsigned int row, col;

    uint8_t Xstart_H, Xstart_L, Ystart_H, Ystart_L, Xend_H, Xend_L, Yend_H, Yend_L;

    Xstart_H = ((Xstart) >> 8) & 0xff;
    Xstart_L = (Xstart) & 0xff;

    Ystart_H = ((Ystart) >> 8) & 0xff;
    Ystart_L = (Ystart) & 0xff;

    Xend_H = ((Xend - 1) >> 8) & 0xff;
    Xend_L = (Xend - 1) & 0xff;

    Yend_H = ((Yend - 1) >> 8) & 0xff;
    Yend_L = (Yend - 1) & 0xff;

    epd_write_cmd(epd_pin_set, 0x91); // partial in
    epd_check_status(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x90);
    epd_check_status(epd_pin_set);

    epd_write_data(epd_pin_set, Xstart_H);
    epd_write_data(epd_pin_set, Xstart_L);

    epd_write_data(epd_pin_set, Xend_H);
    epd_write_data(epd_pin_set, Xend_L);

    epd_write_data(epd_pin_set, Ystart_H);
    epd_write_data(epd_pin_set, Ystart_L);

    epd_write_data(epd_pin_set, Yend_H);
    epd_write_data(epd_pin_set, Yend_L);

    epd_write_data(epd_pin_set, 0x01);

    epd_write_cmd(epd_pin_set, 0x13);
    epd_check_status(epd_pin_set);

    int i = 0;

    for (col = 0; col < (Yend - Ystart); col++)
    {
        for (row = 0; row < ((Xend - Xstart) / 8); row++)
        {
            epd_write_data(epd_pin_set, picData[i++]);
        }
    }
    epd_write_cmd(epd_pin_set, 0x92);
}

void epd_powerOn_refresh(struct EPD_INFO_SET *epd_pin_set)
{
    epd_write_cmd(epd_pin_set, 0x04); // Power ON
    epd_check_status(epd_pin_set);

    epd_refresh(epd_pin_set);

    epd_write_cmd(epd_pin_set, 0x02); // Power OFF
    epd_check_status(epd_pin_set);
}
#endif /*HAREWARE_SPI*/