#ifndef _U8X8_NODEMCU_HAL_H #define _U8X8_NODEMCU_HAL_H #include "u8g2.h" // extend standard u8g2_t struct with info that's needed in the communication callbacks typedef struct { u8g2_t u8g2; // elements for the overlay display driver struct { u8x8_msg_cb hardware_display_cb, template_display_cb; int rfb_cb_ref; uint8_t fb_update_ongoing; } overlay; } u8g2_nodemcu_t; uint8_t u8x8_gpio_and_delay_nodemcu(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr); uint8_t u8x8_byte_nodemcu_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr); uint8_t u8x8_byte_nodemcu_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr); #endif /* _U8X8_NODEMCU_HAL_H */