start from BMP180

I2Csensors/i2c.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2025 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+int i2c_open(const char *path);
+void i2c_close();
+int i2c_set_slave_address(uint8_t addr);
+int i2c_read_reg8(uint8_t regaddr, uint8_t *data);
+int i2c_write_reg8(uint8_t regaddr, uint8_t data);
+int i2c_read_data8(uint8_t regaddr, uint16_t N, uint8_t *array);
+int i2c_read_reg16(uint16_t regaddr, uint16_t *data);
+int i2c_write_reg16(uint16_t regaddr, uint16_t data);
+int i2c_read_data16(uint16_t regaddr, uint16_t N, uint8_t *array);
+