197 lines
6.3 KiB
C
197 lines
6.3 KiB
C
#include "driver/lcd_gc9b71.h"
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#include "epd_private.h"
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/* TODO: Summarize MIPI DCS common commands into a separate file. */
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#define GC9B71_CMD_SWRESET (0x01U)
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#define GC9B71_CMD_SLPIN (0x10U)
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#define GC9B71_CMD_SLPOUT (0x11U)
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#define GC9B71_CMD_INVOFF (0x20U)
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#define GC9B71_CMD_INVON (0x21U)
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#define GC9B71_CMD_DISPOFF (0x28U)
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#define GC9B71_CMD_DISPON (0x29U)
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#define GC9B71_CMD_CASET (0x2AU)
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#define GC9B71_CMD_RASET (0x2BU)
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#define GC9B71_CMD_RAMWR (0x2CU)
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#define GC9B71_CMD_MADCTL (0x36U)
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#define GC9B71_CMD_COLMOD (0x3AU)
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static epd_ret_t lcd_gc9b71_reset(lcd_gc9b71_t *lcd);
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static epd_ret_t lcd_gc9b71_sleep(lcd_gc9b71_t *lcd, bool sleep_mode);
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static epd_ret_t lcd_gc9b71_panel_config(lcd_gc9b71_t *lcd, const gc9b71_panel_config_t *config);
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static epd_ret_t lcd_gc9b71_set_window(lcd_gc9b71_t *lcd, epd_coord_t *coord);
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epd_ret_t lcd_gc9b71_init(lcd_gc9b71_t *lcd, const gc9b71_panel_config_t *config) {
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EPD_ERROR_CHECK(lcd_gc9b71_reset(lcd));
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EPD_ERROR_CHECK(lcd->cb.delay_cb(lcd->user_data, 5));
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EPD_ERROR_CHECK(lcd_gc9b71_panel_config(lcd, config));
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EPD_ERROR_CHECK(lcd_gc9b71_set_pixel_format(lcd, LCD_GC9B71_RGB565));
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EPD_ERROR_CHECK(lcd_gc9b71_set_direction(lcd, LCD_GC9B71_DIR_0));
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EPD_ERROR_CHECK(lcd_gc9b71_set_inversion(lcd, false));
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EPD_ERROR_CHECK(lcd_gc9b71_sleep(lcd, false));
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EPD_ERROR_CHECK(lcd->cb.delay_cb(lcd->user_data, 120));
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if (lcd->cb.backlight_cb) {
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EPD_ERROR_CHECK(lcd->cb.backlight_cb(lcd, 1));
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}
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return EPD_OK;
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}
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epd_ret_t lcd_gc9b71_load(lcd_gc9b71_t *lcd, epd_coord_t *coord, const uint8_t *data) {
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uint32_t pixel_count = (coord->y_end - coord->y_start + 1) * (coord->x_end - coord->x_start + 1);
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uint32_t data_len = 0;
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switch (lcd->pixel_format) {
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case LCD_GC9B71_RGB444:
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data_len = pixel_count * 3 / 2;
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break;
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case LCD_GC9B71_RGB565:
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data_len = pixel_count * 2;
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break;
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case LCD_GC9B71_RGB666:
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case LCD_GC9B71_RGB888:
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data_len = pixel_count * 3;
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break;
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default:
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data_len = pixel_count;
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break;
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}
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// Set cursor
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EPD_ERROR_CHECK(lcd_gc9b71_set_window(lcd, coord));
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// Write pixel data
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EPD_ERROR_CHECK(lcd->cb.write_data_cb(lcd->user_data, data, data_len));
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return EPD_OK;
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}
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epd_ret_t lcd_gc9b71_set_pixel_format(lcd_gc9b71_t *lcd, lcd_gc9b71_pixel_format_t format) {
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lcd->pixel_format = format;
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uint8_t command[2] = {GC9B71_CMD_COLMOD, format};
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, command, 0x02));
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return EPD_OK;
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}
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epd_ret_t lcd_gc9b71_set_direction(lcd_gc9b71_t *lcd, lcd_gc9b71_direction_t direction) {
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lcd->direction = direction;
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uint8_t command[2] = {GC9B71_CMD_MADCTL, direction};
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if (!lcd->panel_config->bgr_filter) {
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command[1] &= ~0x08U;
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}
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, command, 0x02));
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return EPD_OK;
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}
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epd_ret_t lcd_gc9b71_set_inversion(lcd_gc9b71_t *lcd, bool invert) {
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uint8_t command[1];
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if (lcd->panel_config->inversion) {
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command[0] = invert ? GC9B71_CMD_INVOFF : GC9B71_CMD_INVON;
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} else {
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command[0] = invert ? GC9B71_CMD_INVON : GC9B71_CMD_INVOFF;
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}
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, command, 0x01));
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return EPD_OK;
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}
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epd_ret_t lcd_gc9b71_enable_display(lcd_gc9b71_t *lcd, bool on) {
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uint8_t command[1];
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if (on) {
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command[0] = GC9B71_CMD_DISPON;
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} else {
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command[0] = GC9B71_CMD_DISPOFF;
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}
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, command, 0x01));
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return EPD_OK;
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}
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static epd_ret_t lcd_gc9b71_reset(lcd_gc9b71_t *lcd) {
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uint8_t cmd_buf[1] = {GC9B71_CMD_SWRESET};
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if (lcd->cb.reset_cb) {
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return lcd->cb.reset_cb(lcd->user_data);
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}
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return lcd->cb.write_command_cb(lcd->user_data, cmd_buf, 1U);
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}
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static epd_ret_t lcd_gc9b71_sleep(lcd_gc9b71_t *lcd, bool sleep_mode) {
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uint8_t cmd_buf[1] = {GC9B71_CMD_SLPOUT};
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if (sleep_mode) {
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cmd_buf[0] = GC9B71_CMD_SLPIN;
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}
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return lcd->cb.write_command_cb(lcd->user_data, cmd_buf, 1U);
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}
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static epd_ret_t lcd_gc9b71_panel_config(lcd_gc9b71_t *lcd, const gc9b71_panel_config_t *config) {
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EPD_ERROR_CHECK(
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epd_common_execute_sequence(&lcd->cb, lcd->user_data, config->init_struct, config->init_struct_length));
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lcd->panel_config = config;
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return EPD_OK;
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}
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static epd_ret_t lcd_gc9b71_set_window(lcd_gc9b71_t *lcd, epd_coord_t *coord) {
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uint16_t real_x_start, real_x_end, real_y_start, real_y_end;
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uint16_t x_offset, y_offset;
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switch (lcd->direction) {
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case LCD_GC9B71_DIR_0:
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x_offset = lcd->panel_config->ram_offset_x;
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y_offset = lcd->panel_config->ram_offset_y;
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break;
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case LCD_GC9B71_DIR_90:
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x_offset = lcd->panel_config->ram_offset_y;
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y_offset = lcd->panel_config->ram_offset_x;
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break;
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case LCD_GC9B71_DIR_180:
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x_offset = lcd->panel_config->ram_size_x - (lcd->panel_config->ram_offset_x + lcd->panel_config->size_x);
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y_offset = lcd->panel_config->ram_size_y - (lcd->panel_config->ram_offset_y + lcd->panel_config->size_y);
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break;
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case LCD_GC9B71_DIR_270:
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x_offset = lcd->panel_config->ram_size_y - (lcd->panel_config->ram_offset_y + lcd->panel_config->size_y);
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y_offset = lcd->panel_config->ram_size_x - (lcd->panel_config->ram_offset_x + lcd->panel_config->size_x);
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break;
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default:
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x_offset = 0;
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y_offset = 0;
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}
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real_x_start = coord->x_start + x_offset;
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real_x_end = coord->x_end + x_offset;
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real_y_start = coord->y_start + y_offset;
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real_y_end = coord->y_end + y_offset;
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uint8_t tx_buf[5] = {
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GC9B71_CMD_CASET, ((uint8_t)(real_x_start >> 0x08U) & 0xFFU),
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(real_x_start & 0xFFU), ((uint8_t)(real_x_end >> 0x08U) & 0xFFU),
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(real_x_end & 0xFFU),
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};
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, tx_buf, 0x05));
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tx_buf[0] = GC9B71_CMD_RASET;
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tx_buf[1] = ((uint8_t)(real_y_start >> 0x08U) & 0xFFU);
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tx_buf[2] = (real_y_start & 0xFFU);
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tx_buf[3] = ((uint8_t)(real_y_end >> 0x08U) & 0xFFU);
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tx_buf[4] = (real_y_end & 0xFFU);
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EPD_ERROR_CHECK(lcd->cb.write_command_cb(lcd->user_data, tx_buf, 0x05));
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return EPD_OK;
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} |