From b75fc68c80b7d4835fd684e645cfe627f71d2a04 Mon Sep 17 00:00:00 2001
From: Alexey Zholtikov <git@zh.com.ru>
Date: Fri, 8 Aug 2025 14:33:05 +0300
Subject: [PATCH] wip:

---
 include/zh_avr_i2c.h |  2 +-
 version.txt          |  1 +
 zh_avr_i2c.c         | 13 ++++++++++++-
 3 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100644 version.txt

diff --git a/include/zh_avr_i2c.h b/include/zh_avr_i2c.h
index b0bee04..128cf35 100644
--- a/include/zh_avr_i2c.h
+++ b/include/zh_avr_i2c.h
@@ -28,7 +28,7 @@ extern "C"
 		AVR_ERR_NOT_ALLOWED
 	} avr_err_t;
 
-	avr_err_t zh_avr_i2c_master_init(void);
+	avr_err_t zh_avr_i2c_master_init(const bool pullup);
 	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);
diff --git a/version.txt b/version.txt
new file mode 100644
index 0000000..afaf360
--- /dev/null
+++ b/version.txt
@@ -0,0 +1 @@
+1.0.0
\ No newline at end of file
diff --git a/zh_avr_i2c.c b/zh_avr_i2c.c
index e191a05..0e40ce8 100644
--- a/zh_avr_i2c.c
+++ b/zh_avr_i2c.c
@@ -1,7 +1,18 @@
 #include "zh_avr_i2c.h"
 
-avr_err_t zh_avr_i2c_master_init(void)
+avr_err_t zh_avr_i2c_master_init(const bool pullup)
 {
+	i2c_PORT |= 1 << i2c_SCL | 1 << i2c_SDA; // Включим подтяжку на ноги, вдруг юзер на резисторы пожмотился
+	i2c_DDR &= ~(1 << i2c_SCL | 1 << i2c_SDA);
+
+	DDRC &= ~(1 << PORTC5 | 1 << PORTC4);
+	if (pullup == true)
+	{
+		PORTC |= 1 << PORTC5 | 1 << PORTC4;
+	}
+
+	TWBR = 0x80; // Настроим битрейт
+	TWSR = 0x00;
 }
 
 avr_err_t zh_avr_i2c_master_transmit(const uint8_t addr, uint8_t *data, uint8_t size, size_t delay)