max7219: Driver for 8-Digit LED display drivers, MAX7219/MAX7221

struct max7219_t

#include <max7219.h>

Display descriptor.

Public Members

spi_device_interface_config_t spi_cfg

spi_device_handle_t spi_dev

uint8_t digits

Accessible digits in 7seg.

Up to cascade_size * 8

uint8_t cascade_size

Up to MAX7219_MAX_CASCADE_SIZE MAX721xx cascaded.

bool mirrored

true for horizontally mirrored displays

bool bcd

ESP-IDF driver for MAX7219/MAX7221 Serially Interfaced, 8-Digit LED Display Drivers.

Ported from esp-open-rtos

Copyright (c) 2017, 2018 Ruslan V. Uss unclerus@gmail.com

BSD Licensed as described in the file LICENSE

Variables

static const uint8_t font_7seg[] = {0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 0x02, 0x4e, 0x78, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x7e, 0x30, 0x6d, 0x79, 0x33, 0x5b, 0x5f, 0x70, 0x7f, 0x7b, 0x00, 0x00, 0x0d, 0x09, 0x19, 0x65, 0x00, 0x77, 0x1f, 0x4e, 0x3d, 0x4f, 0x47, 0x5e, 0x37, 0x06, 0x38, 0x57, 0x0e, 0x76, 0x15, 0x1d, 0x67, 0x73, 0x05, 0x5b, 0x0f, 0x1c, 0x3e, 0x2a, 0x49, 0x3b, 0x6d, 0x4e, 0x00, 0x78, 0x00, 0x08, 0x02, 0x77, 0x1f, 0x4e, 0x3d, 0x4f, 0x47, 0x5e, 0x37, 0x06, 0x38, 0x57, 0x0e, 0x76, 0x15, 0x1d, 0x67, 0x73, 0x05, 0x5b, 0x0f, 0x1c, 0x3e, 0x2a, 0x49, 0x3b, 0x6d, 0x4e, 0x06, 0x78, 0x00}