6uint8_t u8g2_gpio_and_delay_stm32(
u8x8_t* u8x8, uint8_t msg, uint8_t arg_int,
void* arg_ptr);
8uint8_t u8x8_hw_spi_stm32(
u8x8_t* u8x8, uint8_t msg, uint8_t arg_int,
void* arg_ptr);
10void u8g2_Setup_st756x_flipper(
14 u8x8_msg_cb gpio_and_delay_cb);
16void u8x8_d_st756x_init(
u8x8_t* u8x8, uint8_t contrast, uint8_t regulation_ratio,
bool bias);
18void u8x8_d_st756x_set_contrast(
u8x8_t* u8x8, int8_t contrast_offset);