wip:

.gitignore

@@ -0,0 +1 @@
+.DS_Store

include/zh_avr_i2c.h

@@ -1,9 +1,14 @@
 #pragma once
 
+#include "FreeRTOS.h"
+#include "event_groups.h"
+#include "avr/io.h"
+#include "avr/interrupt.h"
 #include "stdlib.h"
 #include "stdint.h"
 #include "string.h"
 #include "stdbool.h"
+#include "stdio.h"
 
 #ifdef __cplusplus
 extern "C"
@@ -29,6 +34,7 @@ extern "C"
 	} avr_err_t;
 
 	avr_err_t zh_avr_i2c_master_init(const bool pullup);
+	avr_err_t zh_avr_i2c_master_probe(const uint8_t addr, TickType_t xTicksToWait);
 	avr_err_t zh_avr_i2c_master_transmit(const uint8_t addr, uint8_t *data, uint8_t size, size_t delay);
 	avr_err_t zh_avr_i2c_master_receive(const uint8_t addr, uint8_t *data, uint8_t size, size_t delay);
 	avr_err_t zh_avr_i2c_master_transmit_receive(const uint8_t addr, uint8_t *write_data, uint8_t write_size, uint8_t *read_data, uint8_t read_size, size_t delay);
@@ -40,8 +46,7 @@ extern "C"
 #ifndef IICULTIMATE_H
 #define IICULTIMATE_H
 
-#include <avr/io.h>
-#include <avr/interrupt.h>
+
 // #include <avrlibtypes.h>
 // #include <avrlibdefs.h>