Maxim Integrated / Mbed OS HSP_RPC_GUI

MAX32620HSP (MAXREFDES100) RPC Example for Graphical User Interface

Dependencies:   USBDevice

Fork of HSP_Release by Jerry Bradshaw

This is an example program for the MAX32620HSP (MAXREFDES100 Health Sensor Platform). It demonstrates all the features of the platform and works with a companion graphical user interface (GUI) to help evaluate/configure/monitor the board. Go to the MAXREFDES100 product page and click on "design resources" to download the companion software. The GUI connects to the board through an RPC interface on a virtual serial port over the USB interface.

The RPC interface provides access to all the features of the board and is available to interface with other development environments such Matlab. This firmware provides realtime data streaming through the RPC interface over USB, and also provides the ability to log the data to flash for untethered battery operation. The data logging settings are configured through the GUI, and the GUI also provides the interface to download logged data.

Details on the RPC interface can be found here: HSP RPC Interface Documentation

Windows

With this program loaded, the MAX32620HSP will appear on your computer as a serial port. On Mac and Linux, this will happen by default. For Windows, you need to install a driver: HSP serial port windows driver

For more details about this platform and how to use it, see the MAXREFDES100 product page.

HSP/Devices/LIS2DH/LIS2DH/LIS2DH.cpp@0:e4a10ed6eb92, 2016-10-25 (annotated)

Committer:
jbradshaw
Date:
Tue Oct 25 15:22:11 2016 +0000
Revision:
0:e4a10ed6eb92
Child:
1:9490836294ea
tewt

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jbradshaw 0:e4a10ed6eb92 1 /*******************************************************************************
jbradshaw 0:e4a10ed6eb92 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
jbradshaw 0:e4a10ed6eb92 3 *
jbradshaw 0:e4a10ed6eb92 4 * Permission is hereby granted, free of charge, to any person obtaining a
jbradshaw 0:e4a10ed6eb92 5 * copy of this software and associated documentation files (the "Software"),
jbradshaw 0:e4a10ed6eb92 6 * to deal in the Software without restriction, including without limitation
jbradshaw 0:e4a10ed6eb92 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
jbradshaw 0:e4a10ed6eb92 8 * and/or sell copies of the Software, and to permit persons to whom the
jbradshaw 0:e4a10ed6eb92 9 * Software is furnished to do so, subject to the following conditions:
jbradshaw 0:e4a10ed6eb92 10 *
jbradshaw 0:e4a10ed6eb92 11 * The above copyright notice and this permission notice shall be included
jbradshaw 0:e4a10ed6eb92 12 * in all copies or substantial portions of the Software.
jbradshaw 0:e4a10ed6eb92 13 *
jbradshaw 0:e4a10ed6eb92 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
jbradshaw 0:e4a10ed6eb92 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
jbradshaw 0:e4a10ed6eb92 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
jbradshaw 0:e4a10ed6eb92 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
jbradshaw 0:e4a10ed6eb92 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
jbradshaw 0:e4a10ed6eb92 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
jbradshaw 0:e4a10ed6eb92 20 * OTHER DEALINGS IN THE SOFTWARE.
jbradshaw 0:e4a10ed6eb92 21 *
jbradshaw 0:e4a10ed6eb92 22 * Except as contained in this notice, the name of Maxim Integrated
jbradshaw 0:e4a10ed6eb92 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
jbradshaw 0:e4a10ed6eb92 24 * Products, Inc. Branding Policy.
jbradshaw 0:e4a10ed6eb92 25 *
jbradshaw 0:e4a10ed6eb92 26 * The mere transfer of this software does not imply any licenses
jbradshaw 0:e4a10ed6eb92 27 * of trade secrets, proprietary technology, copyrights, patents,
jbradshaw 0:e4a10ed6eb92 28 * trademarks, maskwork rights, or any other form of intellectual
jbradshaw 0:e4a10ed6eb92 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
jbradshaw 0:e4a10ed6eb92 30 * ownership rights.
jbradshaw 0:e4a10ed6eb92 31 *******************************************************************************
jbradshaw 0:e4a10ed6eb92 32 */
jbradshaw 0:e4a10ed6eb92 33
jbradshaw 0:e4a10ed6eb92 34 #include "LIS2DH.h"
jbradshaw 0:e4a10ed6eb92 35 #include "Streaming.h"
jbradshaw 0:e4a10ed6eb92 36 #include "Peripherals.h"
jbradshaw 0:e4a10ed6eb92 37
jbradshaw 0:e4a10ed6eb92 38 void lis2dh_int_handler(void);
jbradshaw 0:e4a10ed6eb92 39 /** buffer array to hold fifo contents for packetizing
jbradshaw 0:e4a10ed6eb92 40 */
jbradshaw 0:e4a10ed6eb92 41 uint32_t lis2dh_buffer[LIS2DH_MAX_DATA_SIZE];
jbradshaw 0:e4a10ed6eb92 42
jbradshaw 0:e4a10ed6eb92 43 static int debug_int_count = 0;
jbradshaw 0:e4a10ed6eb92 44 int16_t motion_cached[3];
jbradshaw 0:e4a10ed6eb92 45 LIS2DH *LIS2DH::instance = NULL;
jbradshaw 0:e4a10ed6eb92 46
jbradshaw 0:e4a10ed6eb92 47 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 48 LIS2DH::LIS2DH(PinName sda, PinName scl, int slaveAddress) :
jbradshaw 0:e4a10ed6eb92 49 slaveAddress(slaveAddress) {
jbradshaw 0:e4a10ed6eb92 50 i2c = new I2C(sda, scl);
jbradshaw 0:e4a10ed6eb92 51 i2c->frequency(400000);
jbradshaw 0:e4a10ed6eb92 52 isOwner = true;
jbradshaw 0:e4a10ed6eb92 53 instance = this;
jbradshaw 0:e4a10ed6eb92 54 }
jbradshaw 0:e4a10ed6eb92 55
jbradshaw 0:e4a10ed6eb92 56 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 57 LIS2DH::LIS2DH(I2C *i2c, int slaveAddress) :
jbradshaw 0:e4a10ed6eb92 58 slaveAddress(slaveAddress) {
jbradshaw 0:e4a10ed6eb92 59 this->i2c = i2c;
jbradshaw 0:e4a10ed6eb92 60 i2c->frequency(400000);
jbradshaw 0:e4a10ed6eb92 61 isOwner = false;
jbradshaw 0:e4a10ed6eb92 62 instance = this;
jbradshaw 0:e4a10ed6eb92 63 }
jbradshaw 0:e4a10ed6eb92 64
jbradshaw 0:e4a10ed6eb92 65 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 66 LIS2DH::~LIS2DH(void) {
jbradshaw 0:e4a10ed6eb92 67 if (isOwner == true) {
jbradshaw 0:e4a10ed6eb92 68 delete i2c;
jbradshaw 0:e4a10ed6eb92 69 }
jbradshaw 0:e4a10ed6eb92 70 }
jbradshaw 0:e4a10ed6eb92 71
jbradshaw 0:e4a10ed6eb92 72 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 73 int LIS2DH::writeReg(char reg, char value) {
jbradshaw 0:e4a10ed6eb92 74 int result;
jbradshaw 0:e4a10ed6eb92 75 char cmdData[2] = {(char)reg, value};
jbradshaw 0:e4a10ed6eb92 76 result = i2c->write(slaveAddress, cmdData, 2);
jbradshaw 0:e4a10ed6eb92 77 if (result != 0)
jbradshaw 0:e4a10ed6eb92 78 return -1;
jbradshaw 0:e4a10ed6eb92 79 return 0;
jbradshaw 0:e4a10ed6eb92 80 }
jbradshaw 0:e4a10ed6eb92 81
jbradshaw 0:e4a10ed6eb92 82 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 83 int LIS2DH::readReg(char reg, char *value) {
jbradshaw 0:e4a10ed6eb92 84 int result;
jbradshaw 0:e4a10ed6eb92 85 char cmdData[1] = {(char)reg};
jbradshaw 0:e4a10ed6eb92 86
jbradshaw 0:e4a10ed6eb92 87 result = i2c->write(slaveAddress, cmdData, 1);
jbradshaw 0:e4a10ed6eb92 88 if (result != 0)
jbradshaw 0:e4a10ed6eb92 89 return -1;
jbradshaw 0:e4a10ed6eb92 90 result = i2c->read(slaveAddress, value, 1);
jbradshaw 0:e4a10ed6eb92 91 if (result != 0)
jbradshaw 0:e4a10ed6eb92 92 return -1;
jbradshaw 0:e4a10ed6eb92 93 return 0;
jbradshaw 0:e4a10ed6eb92 94 }
jbradshaw 0:e4a10ed6eb92 95
jbradshaw 0:e4a10ed6eb92 96 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 97 static void I2c_Reset(uint8_t index, int speed) {
jbradshaw 0:e4a10ed6eb92 98 mxc_i2cm_regs_t *regs = MXC_I2CM_GET_I2CM(index);
jbradshaw 0:e4a10ed6eb92 99 /* reset module */
jbradshaw 0:e4a10ed6eb92 100 regs->ctrl = MXC_F_I2CM_CTRL_MSTR_RESET_EN;
jbradshaw 0:e4a10ed6eb92 101 regs->ctrl = 0;
jbradshaw 0:e4a10ed6eb92 102 /* enable tx_fifo and rx_fifo */
jbradshaw 0:e4a10ed6eb92 103 regs->ctrl |= (MXC_F_I2CM_CTRL_TX_FIFO_EN | MXC_F_I2CM_CTRL_RX_FIFO_EN);
jbradshaw 0:e4a10ed6eb92 104 }
jbradshaw 0:e4a10ed6eb92 105
jbradshaw 0:e4a10ed6eb92 106 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 107 // Interrupt handler, this empties the hardware fifo and packetizes it for
jbradshaw 0:e4a10ed6eb92 108 // streaming
jbradshaw 0:e4a10ed6eb92 109 void LIS2DH::int_handler(void) {
jbradshaw 0:e4a10ed6eb92 110 char fifo_src;
jbradshaw 0:e4a10ed6eb92 111 int16_t valueX;
jbradshaw 0:e4a10ed6eb92 112 int16_t valueY;
jbradshaw 0:e4a10ed6eb92 113 int16_t valueZ;
jbradshaw 0:e4a10ed6eb92 114 int num;
jbradshaw 0:e4a10ed6eb92 115 int index;
jbradshaw 0:e4a10ed6eb92 116
jbradshaw 0:e4a10ed6eb92 117 I2c_Reset(2, 1);
jbradshaw 0:e4a10ed6eb92 118 num = 0;
jbradshaw 0:e4a10ed6eb92 119 index = 0;
jbradshaw 0:e4a10ed6eb92 120 fifo_src = 0;
jbradshaw 0:e4a10ed6eb92 121 while ((fifo_src & 0x20) != 0x20) {
jbradshaw 0:e4a10ed6eb92 122 get_motion_fifo(&valueX, &valueY, &valueZ);
jbradshaw 0:e4a10ed6eb92 123 lis2dh_buffer[index++] = valueX;
jbradshaw 0:e4a10ed6eb92 124 lis2dh_buffer[index++] = valueY;
jbradshaw 0:e4a10ed6eb92 125 lis2dh_buffer[index++] = valueZ;
jbradshaw 0:e4a10ed6eb92 126 readReg(LIS2DH_FIFO_SRC_REG, &fifo_src);
jbradshaw 0:e4a10ed6eb92 127 num++;
jbradshaw 0:e4a10ed6eb92 128 if (num >= 32)
jbradshaw 0:e4a10ed6eb92 129 break;
jbradshaw 0:e4a10ed6eb92 130 }
jbradshaw 0:e4a10ed6eb92 131 motion_cached[0] = valueX;
jbradshaw 0:e4a10ed6eb92 132 motion_cached[1] = valueY;
jbradshaw 0:e4a10ed6eb92 133 motion_cached[2] = valueZ;
jbradshaw 0:e4a10ed6eb92 134
jbradshaw 0:e4a10ed6eb92 135 StreamPacketUint32(PACKET_LIS2DH, lis2dh_buffer, index);
jbradshaw 0:e4a10ed6eb92 136 }
jbradshaw 0:e4a10ed6eb92 137
jbradshaw 0:e4a10ed6eb92 138 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 139 void LIS2DH::init(void) {
jbradshaw 0:e4a10ed6eb92 140 stop();
jbradshaw 0:e4a10ed6eb92 141 configure_interrupt();
jbradshaw 0:e4a10ed6eb92 142 }
jbradshaw 0:e4a10ed6eb92 143
jbradshaw 0:e4a10ed6eb92 144 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 145 void LIS2DH::configure_interrupt(void) {
jbradshaw 0:e4a10ed6eb92 146 // interrupt enabled on INT1, interrupt active low
jbradshaw 0:e4a10ed6eb92 147 lis2dh_ctrl_reg6.all = 0;
jbradshaw 0:e4a10ed6eb92 148 lis2dh_ctrl_reg6.bit.I2_INT1 = 1; // interrupt 1 function enabled on int1 pin
jbradshaw 0:e4a10ed6eb92 149 lis2dh_ctrl_reg6.bit.H_LACTIVE = 1; // interrupt active low
jbradshaw 0:e4a10ed6eb92 150 writeReg(LIS2DH_CTRL_REG6, lis2dh_ctrl_reg6.all);
jbradshaw 0:e4a10ed6eb92 151 }
jbradshaw 0:e4a10ed6eb92 152
jbradshaw 0:e4a10ed6eb92 153 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 154 int LIS2DH::initStart(int dataRate, int fifoThreshold) {
jbradshaw 0:e4a10ed6eb92 155 __disable_irq();
jbradshaw 0:e4a10ed6eb92 156
jbradshaw 0:e4a10ed6eb92 157 configure_interrupt();
jbradshaw 0:e4a10ed6eb92 158
jbradshaw 0:e4a10ed6eb92 159 // enable FIFO
jbradshaw 0:e4a10ed6eb92 160 lis2dh_ctrl_reg5.all = 0x0;
jbradshaw 0:e4a10ed6eb92 161 lis2dh_ctrl_reg5.bit.FIFO_EN = 0x1;
jbradshaw 0:e4a10ed6eb92 162 if (writeReg(LIS2DH_CTRL_REG5, lis2dh_ctrl_reg5.all) == -1) {
jbradshaw 0:e4a10ed6eb92 163 __enable_irq();
jbradshaw 0:e4a10ed6eb92 164 return -1;
jbradshaw 0:e4a10ed6eb92 165 }
jbradshaw 0:e4a10ed6eb92 166
jbradshaw 0:e4a10ed6eb92 167 // set FIFO to stream mode, trigger select INT1
jbradshaw 0:e4a10ed6eb92 168 lis2dh_fifo_ctrl_reg.all = 0x0;
jbradshaw 0:e4a10ed6eb92 169 lis2dh_fifo_ctrl_reg.bit.FTH = fifoThreshold;
jbradshaw 0:e4a10ed6eb92 170 lis2dh_fifo_ctrl_reg.bit.FM = LIS2DH_FIFOMODE_STREAM;
jbradshaw 0:e4a10ed6eb92 171 lis2dh_fifo_ctrl_reg.bit.TR = 0x0;
jbradshaw 0:e4a10ed6eb92 172 if (writeReg(LIS2DH_FIFO_CTRL_REG, lis2dh_fifo_ctrl_reg.all) == -1) {
jbradshaw 0:e4a10ed6eb92 173 __enable_irq();
jbradshaw 0:e4a10ed6eb92 174 return -1;
jbradshaw 0:e4a10ed6eb92 175 }
jbradshaw 0:e4a10ed6eb92 176
jbradshaw 0:e4a10ed6eb92 177 // set HR (high resolution)
jbradshaw 0:e4a10ed6eb92 178 if (writeReg(LIS2DH_CTRL_REG4, 0x8) == -1) {
jbradshaw 0:e4a10ed6eb92 179 __enable_irq();
jbradshaw 0:e4a10ed6eb92 180 return -1;
jbradshaw 0:e4a10ed6eb92 181 }
jbradshaw 0:e4a10ed6eb92 182
jbradshaw 0:e4a10ed6eb92 183 // set the data rate, enable all axis
jbradshaw 0:e4a10ed6eb92 184 dataRate = dataRate & 0xF;
jbradshaw 0:e4a10ed6eb92 185 if (dataRate > 0x9) dataRate = 0x9;
jbradshaw 0:e4a10ed6eb92 186 lis2dh_ctrl_reg1.bit.ODR = dataRate; // set the data rate
jbradshaw 0:e4a10ed6eb92 187 lis2dh_ctrl_reg1.bit.LPen = 0x0; // disable low power mode
jbradshaw 0:e4a10ed6eb92 188 lis2dh_ctrl_reg1.bit.Zen = 0x1; // enable z
jbradshaw 0:e4a10ed6eb92 189 lis2dh_ctrl_reg1.bit.Yen = 0x1; // enable y
jbradshaw 0:e4a10ed6eb92 190 lis2dh_ctrl_reg1.bit.Xen = 0x1; // enable x
jbradshaw 0:e4a10ed6eb92 191 if (writeReg(LIS2DH_CTRL_REG1, lis2dh_ctrl_reg1.all) == -1) {
jbradshaw 0:e4a10ed6eb92 192 __enable_irq();
jbradshaw 0:e4a10ed6eb92 193 return -1;
jbradshaw 0:e4a10ed6eb92 194 }
jbradshaw 0:e4a10ed6eb92 195
jbradshaw 0:e4a10ed6eb92 196 // enable watermark interrupt
jbradshaw 0:e4a10ed6eb92 197 lis2dh_ctrl_reg3.all = 0x00;
jbradshaw 0:e4a10ed6eb92 198 lis2dh_ctrl_reg3.bit.I1_WTM = 0x1;
jbradshaw 0:e4a10ed6eb92 199 if (writeReg(LIS2DH_CTRL_REG3, lis2dh_ctrl_reg3.all) == -1) {
jbradshaw 0:e4a10ed6eb92 200 __enable_irq();
jbradshaw 0:e4a10ed6eb92 201 return -1;
jbradshaw 0:e4a10ed6eb92 202 }
jbradshaw 0:e4a10ed6eb92 203 __enable_irq();
jbradshaw 0:e4a10ed6eb92 204
jbradshaw 0:e4a10ed6eb92 205 return 0;
jbradshaw 0:e4a10ed6eb92 206 }
jbradshaw 0:e4a10ed6eb92 207
jbradshaw 0:e4a10ed6eb92 208 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 209 int LIS2DH::detect(char *detected) {
jbradshaw 0:e4a10ed6eb92 210 char val;
jbradshaw 0:e4a10ed6eb92 211 *detected = 0;
jbradshaw 0:e4a10ed6eb92 212 if (readReg(LIS2DH_WHO_AM_I, &val) == -1)
jbradshaw 0:e4a10ed6eb92 213 return -1;
jbradshaw 0:e4a10ed6eb92 214 if (val == LIS2DH_ID) *detected = 1;
jbradshaw 0:e4a10ed6eb92 215 return 0;
jbradshaw 0:e4a10ed6eb92 216 }
jbradshaw 0:e4a10ed6eb92 217
jbradshaw 0:e4a10ed6eb92 218 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 219 int LIS2DH::get_motion_cached(int16_t *valueX, int16_t *valueY,
jbradshaw 0:e4a10ed6eb92 220 int16_t *valueZ) {
jbradshaw 0:e4a10ed6eb92 221 *valueX = motion_cached[0];
jbradshaw 0:e4a10ed6eb92 222 *valueY = motion_cached[1];
jbradshaw 0:e4a10ed6eb92 223 *valueZ = motion_cached[2];
jbradshaw 0:e4a10ed6eb92 224 return 0;
jbradshaw 0:e4a10ed6eb92 225 }
jbradshaw 0:e4a10ed6eb92 226
jbradshaw 0:e4a10ed6eb92 227 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 228 int LIS2DH::get_motion_fifo(int16_t *valueX, int16_t *valueY, int16_t *valueZ) {
jbradshaw 0:e4a10ed6eb92 229 char reg = LIS2DH_OUT_X_L | 0x80;
jbradshaw 0:e4a10ed6eb92 230 char values[6];
jbradshaw 0:e4a10ed6eb92 231 int i;
jbradshaw 0:e4a10ed6eb92 232
jbradshaw 0:e4a10ed6eb92 233 reg = LIS2DH_OUT_X_L;
jbradshaw 0:e4a10ed6eb92 234 for (i = 0; i < 6; i++) {
jbradshaw 0:e4a10ed6eb92 235 if (readReg(reg, &values[i]) != 0) {
jbradshaw 0:e4a10ed6eb92 236 return -1;
jbradshaw 0:e4a10ed6eb92 237 }
jbradshaw 0:e4a10ed6eb92 238 reg++;
jbradshaw 0:e4a10ed6eb92 239 }
jbradshaw 0:e4a10ed6eb92 240
jbradshaw 0:e4a10ed6eb92 241 *valueX = ((short)values[1] << 8) + values[0];
jbradshaw 0:e4a10ed6eb92 242 *valueY = ((short)values[3] << 8) + values[2];
jbradshaw 0:e4a10ed6eb92 243 *valueZ = ((short)values[5] << 8) + values[4];
jbradshaw 0:e4a10ed6eb92 244 motion_cached[0] = *valueX;
jbradshaw 0:e4a10ed6eb92 245 motion_cached[1] = *valueY;
jbradshaw 0:e4a10ed6eb92 246 motion_cached[2] = *valueZ;
jbradshaw 0:e4a10ed6eb92 247 return 0;
jbradshaw 0:e4a10ed6eb92 248 }
jbradshaw 0:e4a10ed6eb92 249
jbradshaw 0:e4a10ed6eb92 250 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 251 // 0x33 = read ID
jbradshaw 0:e4a10ed6eb92 252 char LIS2DH::readId(void) {
jbradshaw 0:e4a10ed6eb92 253 char val;
jbradshaw 0:e4a10ed6eb92 254 readReg(LIS2DH_WHO_AM_I, &val);
jbradshaw 0:e4a10ed6eb92 255 return val;
jbradshaw 0:e4a10ed6eb92 256 }
jbradshaw 0:e4a10ed6eb92 257
jbradshaw 0:e4a10ed6eb92 258 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 259 void LIS2DH::stop(void) {
jbradshaw 0:e4a10ed6eb92 260 __disable_irq();
jbradshaw 0:e4a10ed6eb92 261 writeReg(LIS2DH_CTRL_REG3, 0x00); // Disable watermark interrupt
jbradshaw 0:e4a10ed6eb92 262 writeReg(LIS2DH_CTRL_REG1, 0x00); // Data rate = 0Hz
jbradshaw 0:e4a10ed6eb92 263 writeReg(LIS2DH_FIFO_CTRL_REG,
jbradshaw 0:e4a10ed6eb92 264 0x00); // set to bypass mode... clears FIFO_SRC_REG
jbradshaw 0:e4a10ed6eb92 265 __enable_irq();
jbradshaw 0:e4a10ed6eb92 266 }
jbradshaw 0:e4a10ed6eb92 267
jbradshaw 0:e4a10ed6eb92 268 //******************************************************************************
jbradshaw 0:e4a10ed6eb92 269 void LIS2DHIntHandler(void) {
jbradshaw 0:e4a10ed6eb92 270 char value;
jbradshaw 0:e4a10ed6eb92 271 // read the data rate axis enable register, if this is zero then just return,
jbradshaw 0:e4a10ed6eb92 272 // we are not ready for interrupts
jbradshaw 0:e4a10ed6eb92 273 LIS2DH::instance->readReg(LIS2DH_CTRL_REG1, &value);
jbradshaw 0:e4a10ed6eb92 274 if (value == 0x0) {
jbradshaw 0:e4a10ed6eb92 275 return;
jbradshaw 0:e4a10ed6eb92 276 }
jbradshaw 0:e4a10ed6eb92 277 LIS2DH::instance->int_handler();
jbradshaw 0:e4a10ed6eb92 278 }