esp8266-clock/main/tm1637.h

/*
 * SPDX-FileCopyrightText: 2022 Helmut Pozimski <helmut@pozimski.eu>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 */
 
 #include <stdint.h>
 #include <stdbool.h>
 
 typedef struct {
	uint8_t clk_pin;
	uint8_t dio_pin;
	bool show_colon;
	uint8_t brightness;
 } tm1637_config;
 
static const uint16_t NUMERALS[] = {
	0x3f,
	0x06,
	0x5b,
	0x4f,
	0x66,
	0x6d,
	0x7d,
	0x07,
	0x7f,
	0x6f
};

esp_err_t tm1637_init(tm1637_config* config, uint8_t clk_pint, uint8_t dio_pin, bool show_colon, uint8_t brightness);
esp_err_t tm1637_set_segment(tm1637_config* config, uint8_t value, uint8_t segment);