Initial check in

2026-01-03 19:05:48 +01:00
commit 1254878a31
253 changed files with 30484 additions and 0 deletions
@@ -0,0 +1,68 @@
+#ifndef FX2_IIC_H
+#define FX2_IIC_H
+
+#include <fx2.h>
+
+// I2C error codes
+// -----------------------------------------------------------------------------
+#define I2C_OK                  0x00
+#define I2C_ERROR               0x80
+#define I2C_ABORT				0xFF
+#define	SMB_ERROR				0xC0
+
+
+// I2C state machine states
+// -----------------------------------------------------------------------------
+#define I2C_IDLE                0x00
+#define I2C_SENDING             0x01
+#define I2C_RECEIVING           0x02
+#define I2C_PRIME               0x03
+#define I2C_BERROR              0x04
+#define I2C_NACK                0x05
+#define I2C_STOP                0x06
+#define I2C_WAITSTOP            0x07
+
+
+// I2C state machine states for read operation with repeated start condition
+// -----------------------------------------------------------------------------
+#define	I2C_SUBADDR_HI			0x10	// sending HI(subaddr)
+#define	I2C_SUBADDR_LO			0x11	// sending LO(subaddr)
+#define	I2C_RESTART				0x12	//
+
+
+// SMBus state machine states
+// -----------------------------------------------------------------------------
+#define SMB_SENDING				0x40
+#define SMB_RECEIVING			0x41
+#define SMB_PRIME				0x43
+#define SMB_BERROR				0x44
+#define SMB_NACK				0x45
+#define	SMB_STOP				0x46
+#define	SMB_WAITSTOP			0x47
+#define	SMB_PEC					0x48
+#define	SMB_CMD_READWORD		0x50
+#define SMB_READWORD			0x51
+
+
+extern void fx2_i2c_init();
+
+extern BYTE	fx2_i2c_wait( 		BYTE addr);
+
+extern BYTE	fx2_i2c_read(		BYTE addr,
+								BYTE length,
+								BYTE xdata *dat);
+
+extern BYTE	fx2_i2c_write(		BYTE addr,
+								BYTE length,
+								BYTE xdata *dat);
+
+extern BYTE fx2_i2c_read_rsw(	BYTE addr,
+								WORD subaddr,
+								BYTE length,
+								BYTE xdata *dat);
+
+extern BYTE fx2_sm_readword(	BYTE addr,
+								BYTE command,
+								BYTE xdata *dat);
+
+#endif