fabhardware.fabreader3/Software/fab-reader2/main/epd/epd.c

//
// Created by Kai Jan Kriegel on 03.02.23.
//

#include "epd.h"
#include "EPD_2in66.h"
#include "platform.h"
#include <esp_err.h>
#include <string.h>

display_t epd_display;


esp_err_t epd_init(display_t display) {
    if (DEV_Module_Init() != 0) {
        return ESP_FAIL;
    }

    EPD_2IN66_Init();

    epd_display = display;

    UWORD Imagesize =
            ((EPD_2IN66_WIDTH % 8 == 0) ? (EPD_2IN66_WIDTH / 8) : (EPD_2IN66_WIDTH / 8 + 1)) * EPD_2IN66_HEIGHT;
    if ((epd_display.canvas = (UBYTE *) malloc(Imagesize)) == NULL) {
        ESP_LOGE("EPD", "Failed to allocate epd canvas memory");
        return ESP_FAIL;
    }

    Paint_NewImage(epd_display.canvas, EPD_2IN66_WIDTH, EPD_2IN66_HEIGHT, 270, WHITE);

    //  Initialise the display
    Paint_SelectImage(epd_display.canvas);
    Paint_Clear(WHITE);
    char readerid[DISPLAY_BUFFER_SIZE];
    snprintf(readerid, DISPLAY_BUFFER_SIZE, "Reader ID: %05d", epd_display.reader_info.reader_id);
    char batterlevel[DISPLAY_BUFFER_SIZE];
    snprintf(batterlevel, DISPLAY_BUFFER_SIZE, "Battery: %d%%", epd_display.reader_info.battery_level);
    //Draw border
    Paint_DrawRectangle(1, 1, EPD_2IN66_HEIGHT - 1, EPD_2IN66_WIDTH, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
    // Draw reader id
    Paint_DrawString_EN(17, 2, readerid, &Font12, WHITE, BLACK);
    // draw divider
    Paint_DrawLine(EPD_2IN66_HEIGHT / 2, 1, EPD_2IN66_HEIGHT / 2, 15, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    // Draw battery level
    Paint_DrawString_EN(175, 2, batterlevel, &Font12, WHITE, BLACK);
    // Draw header horizontal divider
    Paint_DrawLine(1, 15, EPD_2IN66_HEIGHT, 15, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    // draw vertical button divider
    ESP_LOGD("EPD", "Drawing vertical button divider");
    Paint_DrawLine(40, 15, 40, EPD_2IN66_WIDTH, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    Paint_DrawLine(EPD_2IN66_HEIGHT - 40, 15, EPD_2IN66_HEIGHT - 40, EPD_2IN66_WIDTH, BLACK, DOT_PIXEL_1X1,
                   LINE_STYLE_SOLID);
    // Draw horizontal button divider
    ESP_LOGD("EPD", "Drawing horizontal button divider");
    Paint_DrawLine(1, ((EPD_2IN66_WIDTH - 15) / 2) + 15, 40, ((EPD_2IN66_WIDTH - 15) / 2) + 15, BLACK, DOT_PIXEL_1X1,
                   LINE_STYLE_SOLID);
    Paint_DrawLine(EPD_2IN66_HEIGHT - 40, ((EPD_2IN66_WIDTH - 15) / 2) + 15, EPD_2IN66_HEIGHT,
                   ((EPD_2IN66_WIDTH - 15) / 2) + 15, BLACK, DOT_PIXEL_1X1, LINE_STYLE_SOLID);

    // Draw buttons
    ESP_LOGD("EPD", "Drawing buttons");
    Paint_DrawString_EN(12, ((EPD_2IN66_WIDTH - 15) / 2)  - 20 - (Font24.Height / 2), epd_display.buttons.btn0, &Font24, WHITE, BLACK);
    Paint_DrawString_EN(12, ((EPD_2IN66_WIDTH - 15) / 2)  + 40, epd_display.buttons.btn1, &Font24, WHITE, BLACK);
    Paint_DrawString_EN(EPD_2IN66_HEIGHT - 12 - Font24.Width, ((EPD_2IN66_WIDTH - 15) / 2)  - 20 - (Font24.Height / 2), epd_display.buttons.btn2, &Font24, WHITE, BLACK);
    Paint_DrawString_EN(EPD_2IN66_HEIGHT - 12 - Font24.Width, ((EPD_2IN66_WIDTH - 15) / 2)  + 40, epd_display.buttons.btn3, &Font24, WHITE, BLACK);

    // Draw machine name
    ESP_LOGD("EPD", "Drawing machine name");
    Paint_DrawString_EN(42, 20, epd_display.machine_name, &Font16, WHITE, BLACK);

    // Draw machine state
    ESP_LOGD("EPD", "Drawing machine state");
    Paint_DrawString_EN(60, ((EPD_2IN66_WIDTH - 15) / 2) + 15 - (Font24.Height / 2), epd_display.state, &Font24, WHITE,
                        BLACK);

    // Draw QR code
    ESP_LOGD("EPD", "Drawing QR code");
    Paint_DrawBitMap_Paste(gImage_qrurn, EPD_2IN66_HEIGHT - 142,
                           ((EPD_2IN66_WIDTH - 15) / 2) - 35, 100, 100, TRUE);

    ESP_LOGI("EPD", "Displaying initial layout");
    EPD_2IN66_Display(epd_display.canvas);
    ESP_LOGD("EPD", "Sleeping");
    EPD_2IN66_Sleep();
    DEV_Module_Exit();
    return ESP_OK;
}

void epd_clear() {
    EPD_2IN66_Init();
    EPD_2IN66_Clear();
    EPD_2IN66_Sleep();
}

void epd_update_reader_info(reader_info_t reader_info) {
    if (memcmp(&epd_display.reader_info, &reader_info, sizeof(reader_info_t)) != 0) {
        memcpy(&epd_display.reader_info, &reader_info, sizeof(reader_info_t));
        DEV_Module_Init();
        EPD_2IN66_Init();
        EPD_2IN66_Init_Partial();
        Paint_SelectImage(epd_display.canvas);

        char readerid[DISPLAY_BUFFER_SIZE];
        snprintf(readerid, DISPLAY_BUFFER_SIZE, "%05d", epd_display.reader_info.reader_id);
        char batterlevel[DISPLAY_BUFFER_SIZE];
        snprintf(batterlevel, DISPLAY_BUFFER_SIZE, "%d%%", epd_display.reader_info.battery_level);
        Paint_ClearWindows(94, 2, 129, 14, WHITE);
        Paint_DrawString_EN(94, 2, readerid, &Font12, WHITE, BLACK);
        // blank out battery level
        Paint_ClearWindows(238, 2, 266, 14, WHITE);
        // Draw battery level
        Paint_DrawString_EN(238, 2, batterlevel, &Font12, WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
        EPD_2IN66_Sleep();
        DEV_Module_Exit();
    }
}

void epd_update_state(char* state) {
    if (strcmp(epd_display.state, state) != 0) {
        ESP_LOGI("EPD", "Updating state to %s", state);
        strncpy(epd_display.state, state, DISPLAY_BUFFER_SIZE);
        DEV_Module_Init();
        EPD_2IN66_Init();
        EPD_2IN66_Init_Partial();
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(60, ((EPD_2IN66_WIDTH - 15) / 2) + 15 - (Font24.Height / 2), EPD_2IN66_HEIGHT - 142,
                           ((EPD_2IN66_WIDTH - 15) / 2) + 15 - (Font24.Height / 2) + Font24.Height, WHITE);
        Paint_DrawString_EN(60, ((EPD_2IN66_WIDTH - 15) / 2) + 15 - (Font24.Height / 2), epd_display.state, &Font24,
                            WHITE,
                            BLACK);
        EPD_2IN66_Display(epd_display.canvas);
        EPD_2IN66_Sleep();
        DEV_Module_Exit();
    }
}
void epd_update_buttons(buttons_t* buttons) {
    DEV_Module_Init();
    EPD_2IN66_Init();
    EPD_2IN66_Init_Partial();
    if (strcmp(epd_display.buttons.btn0, buttons->btn0) != 0) {
        strncpy(epd_display.buttons.btn0, buttons->btn0, DISPLAY_BUFFER_SIZE);
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(12, ((EPD_2IN66_WIDTH - 15) / 2)  - 20 - (Font24.Height / 2), 12 + Font24.Width,
                           ((EPD_2IN66_WIDTH - 15) / 2)  - 20 - (Font24.Height / 2) + Font24.Height, WHITE);
        Paint_DrawString_EN(12, ((EPD_2IN66_WIDTH - 15) / 2)  - 20 - (Font24.Height / 2), epd_display.buttons.btn0, &Font24,
                            WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
    }
    if (strcmp(epd_display.buttons.btn1, buttons->btn1) != 0) {
        strncpy(epd_display.buttons.btn1, buttons->btn1, DISPLAY_BUFFER_SIZE);
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(12, ((EPD_2IN66_WIDTH - 15) / 2)  + 40, 12 + Font24.Width,
                           ((EPD_2IN66_WIDTH - 15) / 2)  + 40 + Font24.Height, WHITE);
        Paint_DrawString_EN(12, ((EPD_2IN66_WIDTH - 15) / 2)  + 40, epd_display.buttons.btn1, &Font24, WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
    }
    if (strcmp(epd_display.buttons.btn2, buttons->btn2) != 0) {
        strncpy(epd_display.buttons.btn2, buttons->btn2, DISPLAY_BUFFER_SIZE);
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(EPD_2IN66_HEIGHT - 12 - Font24.Width,
                           ((EPD_2IN66_WIDTH - 15) / 2) - 20 - (Font24.Height / 2), EPD_2IN66_HEIGHT - 12,
                           ((EPD_2IN66_WIDTH - 15) / 2) - 20 - (Font24.Height / 2) + Font24.Height, WHITE);
        Paint_DrawString_EN(EPD_2IN66_HEIGHT - 12 - Font24.Width,
                            ((EPD_2IN66_WIDTH - 15) / 2) - 20 - (Font24.Height / 2), epd_display.buttons.btn2, &Font24,
                            WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
    }
    if (strcmp(epd_display.buttons.btn3, buttons->btn3) != 0) {
        strncpy(epd_display.buttons.btn3, buttons->btn3, DISPLAY_BUFFER_SIZE);
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(EPD_2IN66_HEIGHT - 12 - Font24.Width,
                           ((EPD_2IN66_WIDTH - 15) / 2) + 40, EPD_2IN66_HEIGHT - 12,
                           ((EPD_2IN66_WIDTH - 15) / 2) + 40 + Font24.Height, WHITE);
        Paint_DrawString_EN(EPD_2IN66_HEIGHT - 12 - Font24.Width,
                            ((EPD_2IN66_WIDTH - 15) / 2) + 40, epd_display.buttons.btn3, &Font24, WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
    }
    EPD_2IN66_Sleep();
    DEV_Module_Exit();
}
void epd_update_machine_name(char* machine_name) {
    if (strcmp(epd_display.machine_name, machine_name) != 0) {
        strncpy(epd_display.machine_name, machine_name, DISPLAY_BUFFER_SIZE);
        DEV_Module_Init();
        EPD_2IN66_Init();
        EPD_2IN66_Init_Partial();
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(42, 20, 251,
                           20 + Font16.Height, WHITE);
        Paint_DrawString_EN(42, 20, epd_display.machine_name, &Font16, WHITE, BLACK);
        EPD_2IN66_Display(epd_display.canvas);
        EPD_2IN66_Sleep();
        DEV_Module_Exit();
    }
}
void epd_update_image(UBYTE* image) {
    if (memcmp(epd_display.image, image, DISPLAY_BUFFER_SIZE) != 0) {
        memcpy(epd_display.image, image, DISPLAY_BUFFER_SIZE);
        DEV_Module_Init();
        EPD_2IN66_Init();
        EPD_2IN66_Init_Partial();
        Paint_SelectImage(epd_display.canvas);
        Paint_ClearWindows(EPD_2IN66_HEIGHT - 142,
                           ((EPD_2IN66_WIDTH - 15) / 2) - 35,
                           EPD_2IN66_HEIGHT - 142 + 100,
                           ((EPD_2IN66_WIDTH - 15) / 2) - 35 + 100, WHITE);
        Paint_DrawBitMap_Paste(epd_display.image, EPD_2IN66_HEIGHT - 142,
                               ((EPD_2IN66_WIDTH - 15) / 2) - 35, 100, 100, TRUE);
        EPD_2IN66_Display(epd_display.canvas);
        EPD_2IN66_Sleep();
        DEV_Module_Exit();
    }
}