driver max7219 interface header file
uint8_t max7219_interface_spi_init(void)
interface spi bus init
uint8_t max7219_interface_spi_deinit(void)
interface spi bus deinit
uint8_t max7219_interface_spi_write(uint8_t reg, uint8_t *buf, uint16_t len)
interface spi bus write
uint8_t max7219_interface_spi_write_cmd(uint8_t *buf, uint16_t len)
interface spi bus write command
void max7219_interface_delay_ms(uint32_t ms)
interface delay ms
void max7219_interface_debug_print(const char *const fmt,...)
interface print format data