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ADXL345/ADXL345.cpp@0:9cfbae3af1ea, 2012-01-18 (annotated)

Committer:: samux
Date:: Wed Jan 18 14:37:06 2012 +0000
Revision:: 0:9cfbae3af1ea

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User	Revision	Line number	New contents of line
samux	0:9cfbae3af1ea	1	/**
samux	0:9cfbae3af1ea	2	* @author Aaron Berk
samux	0:9cfbae3af1ea	3	*
samux	0:9cfbae3af1ea	4	* @section LICENSE
samux	0:9cfbae3af1ea	5	*
samux	0:9cfbae3af1ea	6	* Copyright (c) 2010 ARM Limited
samux	0:9cfbae3af1ea	7	*
samux	0:9cfbae3af1ea	8	* Permission is hereby granted, free of charge, to any person obtaining a copy
samux	0:9cfbae3af1ea	9	* of this software and associated documentation files (the "Software"), to deal
samux	0:9cfbae3af1ea	10	* in the Software without restriction, including without limitation the rights
samux	0:9cfbae3af1ea	11	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
samux	0:9cfbae3af1ea	12	* copies of the Software, and to permit persons to whom the Software is
samux	0:9cfbae3af1ea	13	* furnished to do so, subject to the following conditions:
samux	0:9cfbae3af1ea	14	*
samux	0:9cfbae3af1ea	15	* The above copyright notice and this permission notice shall be included in
samux	0:9cfbae3af1ea	16	* all copies or substantial portions of the Software.
samux	0:9cfbae3af1ea	17	*
samux	0:9cfbae3af1ea	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
samux	0:9cfbae3af1ea	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
samux	0:9cfbae3af1ea	20	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
samux	0:9cfbae3af1ea	21	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
samux	0:9cfbae3af1ea	22	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux	0:9cfbae3af1ea	23	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
samux	0:9cfbae3af1ea	24	* THE SOFTWARE.
samux	0:9cfbae3af1ea	25	*
samux	0:9cfbae3af1ea	26	* @section DESCRIPTION
samux	0:9cfbae3af1ea	27	*
samux	0:9cfbae3af1ea	28	* ADXL345, triple axis, digital interface, accelerometer.
samux	0:9cfbae3af1ea	29	*
samux	0:9cfbae3af1ea	30	* Datasheet:
samux	0:9cfbae3af1ea	31	*
samux	0:9cfbae3af1ea	32	* http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf
samux	0:9cfbae3af1ea	33	*/
samux	0:9cfbae3af1ea	34
samux	0:9cfbae3af1ea	35	/**
samux	0:9cfbae3af1ea	36	* Includes
samux	0:9cfbae3af1ea	37	*/
samux	0:9cfbae3af1ea	38	#include "ADXL345.h"
samux	0:9cfbae3af1ea	39
samux	0:9cfbae3af1ea	40	ADXL345::ADXL345(PinName mosi,
samux	0:9cfbae3af1ea	41	PinName miso,
samux	0:9cfbae3af1ea	42	PinName sck,
samux	0:9cfbae3af1ea	43	PinName cs) : spi_(mosi, miso, sck), nCS_(cs) {
samux	0:9cfbae3af1ea	44
samux	0:9cfbae3af1ea	45	//2MHz, allowing us to use the fastest data rates.
samux	0:9cfbae3af1ea	46	spi_.frequency(2000000);
samux	0:9cfbae3af1ea	47	spi_.format(8,3);
samux	0:9cfbae3af1ea	48
samux	0:9cfbae3af1ea	49	nCS_ = 1;
samux	0:9cfbae3af1ea	50
samux	0:9cfbae3af1ea	51	wait_us(500);
samux	0:9cfbae3af1ea	52
samux	0:9cfbae3af1ea	53	}
samux	0:9cfbae3af1ea	54
samux	0:9cfbae3af1ea	55	int ADXL345::getDevId(void) {
samux	0:9cfbae3af1ea	56
samux	0:9cfbae3af1ea	57	return oneByteRead(ADXL345_DEVID_REG);
samux	0:9cfbae3af1ea	58
samux	0:9cfbae3af1ea	59	}
samux	0:9cfbae3af1ea	60
samux	0:9cfbae3af1ea	61	int ADXL345::getTapThreshold(void) {
samux	0:9cfbae3af1ea	62
samux	0:9cfbae3af1ea	63	return oneByteRead(ADXL345_THRESH_TAP_REG);
samux	0:9cfbae3af1ea	64
samux	0:9cfbae3af1ea	65	}
samux	0:9cfbae3af1ea	66
samux	0:9cfbae3af1ea	67	void ADXL345::setTapThreshold(int threshold) {
samux	0:9cfbae3af1ea	68
samux	0:9cfbae3af1ea	69	oneByteWrite(ADXL345_THRESH_TAP_REG, threshold);
samux	0:9cfbae3af1ea	70
samux	0:9cfbae3af1ea	71	}
samux	0:9cfbae3af1ea	72
samux	0:9cfbae3af1ea	73	int ADXL345::getOffset(int axis) {
samux	0:9cfbae3af1ea	74
samux	0:9cfbae3af1ea	75	int address = 0;
samux	0:9cfbae3af1ea	76
samux	0:9cfbae3af1ea	77	if (axis == ADXL345_X) {
samux	0:9cfbae3af1ea	78	address = ADXL345_OFSX_REG;
samux	0:9cfbae3af1ea	79	} else if (axis == ADXL345_Y) {
samux	0:9cfbae3af1ea	80	address = ADXL345_OFSY_REG;
samux	0:9cfbae3af1ea	81	} else if (axis == ADXL345_Z) {
samux	0:9cfbae3af1ea	82	address = ADXL345_OFSZ_REG;
samux	0:9cfbae3af1ea	83	}
samux	0:9cfbae3af1ea	84
samux	0:9cfbae3af1ea	85	return oneByteRead(address);
samux	0:9cfbae3af1ea	86
samux	0:9cfbae3af1ea	87	}
samux	0:9cfbae3af1ea	88
samux	0:9cfbae3af1ea	89	void ADXL345::setOffset(int axis, char offset) {
samux	0:9cfbae3af1ea	90
samux	0:9cfbae3af1ea	91	int address = 0;
samux	0:9cfbae3af1ea	92
samux	0:9cfbae3af1ea	93	if (axis == ADXL345_X) {
samux	0:9cfbae3af1ea	94	address = ADXL345_OFSX_REG;
samux	0:9cfbae3af1ea	95	} else if (axis == ADXL345_Y) {
samux	0:9cfbae3af1ea	96	address = ADXL345_OFSY_REG;
samux	0:9cfbae3af1ea	97	} else if (axis == ADXL345_Z) {
samux	0:9cfbae3af1ea	98	address = ADXL345_OFSZ_REG;
samux	0:9cfbae3af1ea	99	}
samux	0:9cfbae3af1ea	100
samux	0:9cfbae3af1ea	101	return oneByteWrite(address, offset);
samux	0:9cfbae3af1ea	102
samux	0:9cfbae3af1ea	103	}
samux	0:9cfbae3af1ea	104
samux	0:9cfbae3af1ea	105	int ADXL345::getTapDuration(void) {
samux	0:9cfbae3af1ea	106
samux	0:9cfbae3af1ea	107	return oneByteRead(ADXL345_DUR_REG)*625;
samux	0:9cfbae3af1ea	108
samux	0:9cfbae3af1ea	109	}
samux	0:9cfbae3af1ea	110
samux	0:9cfbae3af1ea	111	void ADXL345::setTapDuration(int duration_us) {
samux	0:9cfbae3af1ea	112
samux	0:9cfbae3af1ea	113	int tapDuration = duration_us / 625;
samux	0:9cfbae3af1ea	114
samux	0:9cfbae3af1ea	115	oneByteWrite(ADXL345_DUR_REG, tapDuration);
samux	0:9cfbae3af1ea	116
samux	0:9cfbae3af1ea	117	}
samux	0:9cfbae3af1ea	118
samux	0:9cfbae3af1ea	119	float ADXL345::getTapLatency(void) {
samux	0:9cfbae3af1ea	120
samux	0:9cfbae3af1ea	121	return oneByteRead(ADXL345_LATENT_REG)*1.25;
samux	0:9cfbae3af1ea	122
samux	0:9cfbae3af1ea	123	}
samux	0:9cfbae3af1ea	124
samux	0:9cfbae3af1ea	125	void ADXL345::setTapLatency(int latency_ms) {
samux	0:9cfbae3af1ea	126
samux	0:9cfbae3af1ea	127	int tapLatency = latency_ms / 1.25;
samux	0:9cfbae3af1ea	128
samux	0:9cfbae3af1ea	129	oneByteWrite(ADXL345_LATENT_REG, tapLatency);
samux	0:9cfbae3af1ea	130
samux	0:9cfbae3af1ea	131	}
samux	0:9cfbae3af1ea	132
samux	0:9cfbae3af1ea	133	float ADXL345::getWindowTime(void) {
samux	0:9cfbae3af1ea	134
samux	0:9cfbae3af1ea	135	return oneByteRead(ADXL345_WINDOW_REG)*1.25;
samux	0:9cfbae3af1ea	136
samux	0:9cfbae3af1ea	137	}
samux	0:9cfbae3af1ea	138
samux	0:9cfbae3af1ea	139	void ADXL345::setWindowTime(int window_ms) {
samux	0:9cfbae3af1ea	140
samux	0:9cfbae3af1ea	141	int windowTime = window_ms / 1.25;
samux	0:9cfbae3af1ea	142
samux	0:9cfbae3af1ea	143	oneByteWrite(ADXL345_WINDOW_REG, windowTime);
samux	0:9cfbae3af1ea	144
samux	0:9cfbae3af1ea	145	}
samux	0:9cfbae3af1ea	146
samux	0:9cfbae3af1ea	147	int ADXL345::getActivityThreshold(void) {
samux	0:9cfbae3af1ea	148
samux	0:9cfbae3af1ea	149	return oneByteRead(ADXL345_THRESH_ACT_REG);
samux	0:9cfbae3af1ea	150
samux	0:9cfbae3af1ea	151	}
samux	0:9cfbae3af1ea	152
samux	0:9cfbae3af1ea	153	void ADXL345::setActivityThreshold(int threshold) {
samux	0:9cfbae3af1ea	154
samux	0:9cfbae3af1ea	155	oneByteWrite(ADXL345_THRESH_ACT_REG, threshold);
samux	0:9cfbae3af1ea	156
samux	0:9cfbae3af1ea	157	}
samux	0:9cfbae3af1ea	158
samux	0:9cfbae3af1ea	159	int ADXL345::getInactivityThreshold(void) {
samux	0:9cfbae3af1ea	160
samux	0:9cfbae3af1ea	161	return oneByteRead(ADXL345_THRESH_INACT_REG);
samux	0:9cfbae3af1ea	162
samux	0:9cfbae3af1ea	163	}
samux	0:9cfbae3af1ea	164
samux	0:9cfbae3af1ea	165	void ADXL345::setInactivityThreshold(int threshold) {
samux	0:9cfbae3af1ea	166
samux	0:9cfbae3af1ea	167	return oneByteWrite(ADXL345_THRESH_INACT_REG, threshold);
samux	0:9cfbae3af1ea	168
samux	0:9cfbae3af1ea	169	}
samux	0:9cfbae3af1ea	170
samux	0:9cfbae3af1ea	171	int ADXL345::getTimeInactivity(void) {
samux	0:9cfbae3af1ea	172
samux	0:9cfbae3af1ea	173	return oneByteRead(ADXL345_TIME_INACT_REG);
samux	0:9cfbae3af1ea	174
samux	0:9cfbae3af1ea	175	}
samux	0:9cfbae3af1ea	176
samux	0:9cfbae3af1ea	177	void ADXL345::setTimeInactivity(int timeInactivity) {
samux	0:9cfbae3af1ea	178
samux	0:9cfbae3af1ea	179	oneByteWrite(ADXL345_TIME_INACT_REG, timeInactivity);
samux	0:9cfbae3af1ea	180
samux	0:9cfbae3af1ea	181	}
samux	0:9cfbae3af1ea	182
samux	0:9cfbae3af1ea	183	int ADXL345::getActivityInactivityControl(void) {
samux	0:9cfbae3af1ea	184
samux	0:9cfbae3af1ea	185	return oneByteRead(ADXL345_ACT_INACT_CTL_REG);
samux	0:9cfbae3af1ea	186
samux	0:9cfbae3af1ea	187	}
samux	0:9cfbae3af1ea	188
samux	0:9cfbae3af1ea	189	void ADXL345::setActivityInactivityControl(int settings) {
samux	0:9cfbae3af1ea	190
samux	0:9cfbae3af1ea	191	oneByteWrite(ADXL345_ACT_INACT_CTL_REG, settings);
samux	0:9cfbae3af1ea	192
samux	0:9cfbae3af1ea	193	}
samux	0:9cfbae3af1ea	194
samux	0:9cfbae3af1ea	195	int ADXL345::getFreefallThreshold(void) {
samux	0:9cfbae3af1ea	196
samux	0:9cfbae3af1ea	197	return oneByteRead(ADXL345_THRESH_FF_REG);
samux	0:9cfbae3af1ea	198
samux	0:9cfbae3af1ea	199	}
samux	0:9cfbae3af1ea	200
samux	0:9cfbae3af1ea	201	void ADXL345::setFreefallThreshold(int threshold) {
samux	0:9cfbae3af1ea	202
samux	0:9cfbae3af1ea	203	oneByteWrite(ADXL345_THRESH_FF_REG, threshold);
samux	0:9cfbae3af1ea	204
samux	0:9cfbae3af1ea	205	}
samux	0:9cfbae3af1ea	206
samux	0:9cfbae3af1ea	207	int ADXL345::getFreefallTime(void) {
samux	0:9cfbae3af1ea	208
samux	0:9cfbae3af1ea	209	return oneByteRead(ADXL345_TIME_FF_REG)*5;
samux	0:9cfbae3af1ea	210
samux	0:9cfbae3af1ea	211	}
samux	0:9cfbae3af1ea	212
samux	0:9cfbae3af1ea	213	void ADXL345::setFreefallTime(int freefallTime_ms) {
samux	0:9cfbae3af1ea	214
samux	0:9cfbae3af1ea	215	int freefallTime = freefallTime_ms / 5;
samux	0:9cfbae3af1ea	216
samux	0:9cfbae3af1ea	217	oneByteWrite(ADXL345_TIME_FF_REG, freefallTime);
samux	0:9cfbae3af1ea	218
samux	0:9cfbae3af1ea	219	}
samux	0:9cfbae3af1ea	220
samux	0:9cfbae3af1ea	221	int ADXL345::getTapAxisControl(void) {
samux	0:9cfbae3af1ea	222
samux	0:9cfbae3af1ea	223	return oneByteRead(ADXL345_TAP_AXES_REG);
samux	0:9cfbae3af1ea	224
samux	0:9cfbae3af1ea	225	}
samux	0:9cfbae3af1ea	226
samux	0:9cfbae3af1ea	227	void ADXL345::setTapAxisControl(int settings) {
samux	0:9cfbae3af1ea	228
samux	0:9cfbae3af1ea	229	oneByteWrite(ADXL345_TAP_AXES_REG, settings);
samux	0:9cfbae3af1ea	230
samux	0:9cfbae3af1ea	231	}
samux	0:9cfbae3af1ea	232
samux	0:9cfbae3af1ea	233	int ADXL345::getTapSource(void) {
samux	0:9cfbae3af1ea	234
samux	0:9cfbae3af1ea	235	return oneByteRead(ADXL345_ACT_TAP_STATUS_REG);
samux	0:9cfbae3af1ea	236
samux	0:9cfbae3af1ea	237	}
samux	0:9cfbae3af1ea	238
samux	0:9cfbae3af1ea	239	void ADXL345::setPowerMode(char mode) {
samux	0:9cfbae3af1ea	240
samux	0:9cfbae3af1ea	241	//Get the current register contents, so we don't clobber the rate value.
samux	0:9cfbae3af1ea	242	char registerContents = oneByteRead(ADXL345_BW_RATE_REG);
samux	0:9cfbae3af1ea	243
samux	0:9cfbae3af1ea	244	registerContents = (mode << 4) \| registerContents;
samux	0:9cfbae3af1ea	245
samux	0:9cfbae3af1ea	246	oneByteWrite(ADXL345_BW_RATE_REG, registerContents);
samux	0:9cfbae3af1ea	247
samux	0:9cfbae3af1ea	248	}
samux	0:9cfbae3af1ea	249
samux	0:9cfbae3af1ea	250	int ADXL345::getPowerControl(void) {
samux	0:9cfbae3af1ea	251
samux	0:9cfbae3af1ea	252	return oneByteRead(ADXL345_POWER_CTL_REG);
samux	0:9cfbae3af1ea	253
samux	0:9cfbae3af1ea	254	}
samux	0:9cfbae3af1ea	255
samux	0:9cfbae3af1ea	256	void ADXL345::setPowerControl(int settings) {
samux	0:9cfbae3af1ea	257
samux	0:9cfbae3af1ea	258	oneByteWrite(ADXL345_POWER_CTL_REG, settings);
samux	0:9cfbae3af1ea	259
samux	0:9cfbae3af1ea	260	}
samux	0:9cfbae3af1ea	261
samux	0:9cfbae3af1ea	262	int ADXL345::getInterruptEnableControl(void) {
samux	0:9cfbae3af1ea	263
samux	0:9cfbae3af1ea	264	return oneByteRead(ADXL345_INT_ENABLE_REG);
samux	0:9cfbae3af1ea	265
samux	0:9cfbae3af1ea	266	}
samux	0:9cfbae3af1ea	267
samux	0:9cfbae3af1ea	268	void ADXL345::setInterruptEnableControl(int settings) {
samux	0:9cfbae3af1ea	269
samux	0:9cfbae3af1ea	270	oneByteWrite(ADXL345_INT_ENABLE_REG, settings);
samux	0:9cfbae3af1ea	271
samux	0:9cfbae3af1ea	272	}
samux	0:9cfbae3af1ea	273
samux	0:9cfbae3af1ea	274	int ADXL345::getInterruptMappingControl(void) {
samux	0:9cfbae3af1ea	275
samux	0:9cfbae3af1ea	276	return oneByteRead(ADXL345_INT_MAP_REG);
samux	0:9cfbae3af1ea	277
samux	0:9cfbae3af1ea	278	}
samux	0:9cfbae3af1ea	279
samux	0:9cfbae3af1ea	280	void ADXL345::setInterruptMappingControl(int settings) {
samux	0:9cfbae3af1ea	281
samux	0:9cfbae3af1ea	282	oneByteWrite(ADXL345_INT_MAP_REG, settings);
samux	0:9cfbae3af1ea	283
samux	0:9cfbae3af1ea	284	}
samux	0:9cfbae3af1ea	285
samux	0:9cfbae3af1ea	286	int ADXL345::getInterruptSource(void){
samux	0:9cfbae3af1ea	287
samux	0:9cfbae3af1ea	288	return oneByteRead(ADXL345_INT_SOURCE_REG);
samux	0:9cfbae3af1ea	289
samux	0:9cfbae3af1ea	290	}
samux	0:9cfbae3af1ea	291
samux	0:9cfbae3af1ea	292	int ADXL345::getDataFormatControl(void){
samux	0:9cfbae3af1ea	293
samux	0:9cfbae3af1ea	294	return oneByteRead(ADXL345_DATA_FORMAT_REG);
samux	0:9cfbae3af1ea	295
samux	0:9cfbae3af1ea	296	}
samux	0:9cfbae3af1ea	297
samux	0:9cfbae3af1ea	298	void ADXL345::setDataFormatControl(int settings){
samux	0:9cfbae3af1ea	299
samux	0:9cfbae3af1ea	300	oneByteWrite(ADXL345_DATA_FORMAT_REG, settings);
samux	0:9cfbae3af1ea	301
samux	0:9cfbae3af1ea	302	}
samux	0:9cfbae3af1ea	303
samux	0:9cfbae3af1ea	304	void ADXL345::setDataRate(int rate) {
samux	0:9cfbae3af1ea	305
samux	0:9cfbae3af1ea	306	//Get the current register contents, so we don't clobber the power bit.
samux	0:9cfbae3af1ea	307	char registerContents = oneByteRead(ADXL345_BW_RATE_REG);
samux	0:9cfbae3af1ea	308
samux	0:9cfbae3af1ea	309	registerContents &= 0x10;
samux	0:9cfbae3af1ea	310	registerContents \|= rate;
samux	0:9cfbae3af1ea	311
samux	0:9cfbae3af1ea	312	oneByteWrite(ADXL345_BW_RATE_REG, registerContents);
samux	0:9cfbae3af1ea	313
samux	0:9cfbae3af1ea	314	}
samux	0:9cfbae3af1ea	315
samux	0:9cfbae3af1ea	316	void ADXL345::getOutput(int* readings){
samux	0:9cfbae3af1ea	317
samux	0:9cfbae3af1ea	318	char buffer[6];
samux	0:9cfbae3af1ea	319
samux	0:9cfbae3af1ea	320	multiByteRead(ADXL345_DATAX0_REG, buffer, 6);
samux	0:9cfbae3af1ea	321
samux	0:9cfbae3af1ea	322	readings[0] = (int)buffer[1] << 8 \| (int)buffer[0];
samux	0:9cfbae3af1ea	323	readings[1] = (int)buffer[3] << 8 \| (int)buffer[2];
samux	0:9cfbae3af1ea	324	readings[2] = (int)buffer[5] << 8 \| (int)buffer[4];
samux	0:9cfbae3af1ea	325
samux	0:9cfbae3af1ea	326	}
samux	0:9cfbae3af1ea	327
samux	0:9cfbae3af1ea	328	int ADXL345::getFifoControl(void){
samux	0:9cfbae3af1ea	329
samux	0:9cfbae3af1ea	330	return oneByteRead(ADXL345_FIFO_CTL);
samux	0:9cfbae3af1ea	331
samux	0:9cfbae3af1ea	332	}
samux	0:9cfbae3af1ea	333
samux	0:9cfbae3af1ea	334	void ADXL345::setFifoControl(int settings){
samux	0:9cfbae3af1ea	335
samux	0:9cfbae3af1ea	336	oneByteWrite(ADXL345_FIFO_STATUS, settings);
samux	0:9cfbae3af1ea	337
samux	0:9cfbae3af1ea	338	}
samux	0:9cfbae3af1ea	339
samux	0:9cfbae3af1ea	340	int ADXL345::getFifoStatus(void){
samux	0:9cfbae3af1ea	341
samux	0:9cfbae3af1ea	342	return oneByteRead(ADXL345_FIFO_STATUS);
samux	0:9cfbae3af1ea	343
samux	0:9cfbae3af1ea	344	}
samux	0:9cfbae3af1ea	345
samux	0:9cfbae3af1ea	346	int ADXL345::oneByteRead(int address) {
samux	0:9cfbae3af1ea	347
samux	0:9cfbae3af1ea	348	int tx = (ADXL345_SPI_READ \| (address & 0x3F));
samux	0:9cfbae3af1ea	349	int rx = 0;
samux	0:9cfbae3af1ea	350
samux	0:9cfbae3af1ea	351	nCS_ = 0;
samux	0:9cfbae3af1ea	352	//Send address to read from.
samux	0:9cfbae3af1ea	353	spi_.write(tx);
samux	0:9cfbae3af1ea	354	//Read back contents of address.
samux	0:9cfbae3af1ea	355	rx = spi_.write(0x00);
samux	0:9cfbae3af1ea	356	nCS_ = 1;
samux	0:9cfbae3af1ea	357
samux	0:9cfbae3af1ea	358	return rx;
samux	0:9cfbae3af1ea	359
samux	0:9cfbae3af1ea	360	}
samux	0:9cfbae3af1ea	361
samux	0:9cfbae3af1ea	362	void ADXL345::oneByteWrite(int address, char data) {
samux	0:9cfbae3af1ea	363
samux	0:9cfbae3af1ea	364	int tx = (ADXL345_SPI_WRITE \| (address & 0x3F));
samux	0:9cfbae3af1ea	365
samux	0:9cfbae3af1ea	366	nCS_ = 0;
samux	0:9cfbae3af1ea	367	//Send address to write to.
samux	0:9cfbae3af1ea	368	spi_.write(tx);
samux	0:9cfbae3af1ea	369	//Send data to be written.
samux	0:9cfbae3af1ea	370	spi_.write(data);
samux	0:9cfbae3af1ea	371	nCS_ = 1;
samux	0:9cfbae3af1ea	372
samux	0:9cfbae3af1ea	373	}
samux	0:9cfbae3af1ea	374
samux	0:9cfbae3af1ea	375	void ADXL345::multiByteRead(int startAddress, char* buffer, int size) {
samux	0:9cfbae3af1ea	376
samux	0:9cfbae3af1ea	377	int tx = (ADXL345_SPI_READ \| ADXL345_MULTI_BYTE \| (startAddress & 0x3F));
samux	0:9cfbae3af1ea	378
samux	0:9cfbae3af1ea	379	nCS_ = 0;
samux	0:9cfbae3af1ea	380	//Send address to start reading from.
samux	0:9cfbae3af1ea	381	spi_.write(tx);
samux	0:9cfbae3af1ea	382
samux	0:9cfbae3af1ea	383	for (int i = 0; i < size; i++) {
samux	0:9cfbae3af1ea	384	buffer[i] = spi_.write(0x00);
samux	0:9cfbae3af1ea	385	}
samux	0:9cfbae3af1ea	386
samux	0:9cfbae3af1ea	387	nCS_ = 1;
samux	0:9cfbae3af1ea	388
samux	0:9cfbae3af1ea	389	}
samux	0:9cfbae3af1ea	390
samux	0:9cfbae3af1ea	391	void ADXL345::multiByteWrite(int startAddress, char* buffer, int size) {
samux	0:9cfbae3af1ea	392
samux	0:9cfbae3af1ea	393	int tx = (ADXL345_SPI_WRITE \| ADXL345_MULTI_BYTE \| (startAddress & 0x3F));
samux	0:9cfbae3af1ea	394
samux	0:9cfbae3af1ea	395	nCS_ = 0;
samux	0:9cfbae3af1ea	396	//Send address to start reading from.
samux	0:9cfbae3af1ea	397	spi_.write(tx);
samux	0:9cfbae3af1ea	398
samux	0:9cfbae3af1ea	399	for (int i = 0; i < size; i++) {
samux	0:9cfbae3af1ea	400	buffer[i] = spi_.write(0x00);
samux	0:9cfbae3af1ea	401	}
samux	0:9cfbae3af1ea	402
samux	0:9cfbae3af1ea	403	nCS_ = 1;
samux	0:9cfbae3af1ea	404
samux	0:9cfbae3af1ea	405	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	18 Jan 2012
Imports:	42
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	2

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ADXL345/ADXL345.cpp@0:9cfbae3af1ea, 2012-01-18 (annotated)

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