Initial Arduino IDE based on Processing.

build/shared/lib/avrlib/lis3l02.c

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+/*! \file lis3l02.c \brief ST LIS3L02 3-axis I2C Accelerometer Library. */
+//*****************************************************************************
+//
+// File Name	: 'lis3l02.c'
+// Title		: ST LIS3L02 3-axis I2C Accelerometer Library
+// Author		: Pascal Stang - Copyright (C) 2004
+// Created		: 2004.10.23
+// Revised		: 2004.12.14
+// Version		: 0.1
+// Target MCU	: Atmel AVR Series
+// Editor Tabs	: 4
+//
+// NOTE: This code is currently below version 1.0, and therefore is considered
+// to be lacking in some functionality or documentation, or may not be fully
+// tested.  Nonetheless, you can expect most functions to work.
+//
+// This code is distributed under the GNU Public License
+//		which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#include <avr/io.h>
+#include <avr/signal.h>
+#include <avr/interrupt.h>
+
+#include "global.h"
+#include "i2c.h"
+#include "lis3l02.h"
+
+#include "rprintf.h"
+#include "timer.h"
+
+// global variables
+
+// Functions
+u08 lis3l02Init(void)
+{
+	// reset LIS3L02 chip
+	return lis3l02Reset();
+}
+
+u08 lis3l02Reset(void)
+{
+	// turn on device and enable X,Y,Z
+	lis3l02WriteReg(LIS3L02_REG_CTRLREG1,
+		LIS3L02_CTRLREG1_XEN |
+		LIS3L02_CTRLREG1_YEN |
+		LIS3L02_CTRLREG1_ZEN |
+		LIS3L02_CTRLREG1_PD0);
+
+	// scale and justification options
+	lis3l02WriteReg(LIS3L02_REG_CTRLREG2,
+		LIS3L02_CTRLREG2_BOOT | 
+		LIS3L02_CTRLREG2_DAS );
+
+	return 0;
+}
+
+u08 lis3l02ReadReg(u08 reg)
+{
+	u08 data;
+	u08 i2cStat;
+
+	// set register
+	i2cStat = i2cMasterSendNI(LIS3L02_I2C_ADDR, 1, &reg);
+	if(i2cStat == I2C_ERROR_NODEV)
+	{
+		rprintf("No I2C Device\r\n");
+		return i2cStat;
+	}
+	// read register
+	i2cStat = i2cMasterReceiveNI(LIS3L02_I2C_ADDR, 1, &data);
+
+	//rprintf("READ: Reg=0x%x  Data=0x%x\r\n", reg, data);
+
+	return data;
+}
+
+u08 lis3l02WriteReg(u08 reg, u08 data)
+{
+	u08 packet[2];
+	u08 i2cStat;
+	
+	// prepare packet
+	packet[0] = reg;
+	packet[1] = data;
+	// write register
+	i2cStat = i2cMasterSendNI(LIS3L02_I2C_ADDR, 2, packet);
+	if(i2cStat == I2C_ERROR_NODEV)
+	{
+		rprintf("No I2C Device\r\n");
+		return i2cStat;
+	}
+
+	//rprintf("WRITE: Reg=0x%x  Data=0x%x\r\n", reg, data);
+
+	return (i2cStat == I2C_OK);
+}
+
+s16 lis3l02GetAccel(u08 chxyz)
+{
+	s16 value;
+	
+	value  = lis3l02ReadReg(LIS3L02_REG_OUTXL + (chxyz<<1));
+	value |= lis3l02ReadReg(LIS3L02_REG_OUTXH + (chxyz<<1))<<8;
+
+	return value;
+}
+
+
+