Initial commit

source/soc/i2c.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2018 naehrwert
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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/>.
+ */
+
+#ifndef _I2C_H_
+#define _I2C_H_
+
+#include "../utils/types.h"
+
+#define I2C_1 0
+#define I2C_2 1
+#define I2C_3 2
+#define I2C_4 3
+#define I2C_5 4
+#define I2C_6 5
+
+#define I2C_CNFG        0x00
+#define I2C_CMD_ADDR0   0x01
+#define I2C_CMD_DATA1   0x03
+#define I2C_CMD_DATA2   0x04
+#define I2C_STATUS 0x07
+#define INTERRUPT_STATUS_REGISTER 0x1A
+#define I2C_CLK_DIVISOR_REGISTER 0x1B
+#define I2C_BUS_CLEAR_CONFIG 0x21
+#define I2C_BUS_CLEAR_STATUS 0x22
+#define I2C_CONFIG_LOAD 0x23
+
+void i2c_init(u32 idx);
+int i2c_send_buf_small(u32 idx, u32 x, u32 y, u8 *buf, u32 size);
+int i2c_recv_buf_small(u8 *buf, u32 size, u32 idx, u32 x, u32 y);
+int i2c_send_byte(u32 idx, u32 x, u32 y, u8 b);
+u8 i2c_recv_byte(u32 idx, u32 x, u32 y);
+
+#endif