valeria toffoli / Mbed OS COG4050_adxl355_adxl357

base program for tilt measurement

Dependencies:   COG4050_ADT7420 ADXL362

Fork of COG4050_adxl355_adxl357-ver2 by ADI_CAC

ADXL35x/ADXL355.cpp@4:23b53636b576, 2018-08-08 (annotated)

Committer:
vtoffoli
Date:
Wed Aug 08 11:57:16 2018 +0000
Revision:
4:23b53636b576
Parent:
3:ee052fdb4331
Child:
6:45d2393ef468
refresh;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vtoffoli 2:14dc1ec57f3b 1 #include <stdint.h>
vtoffoli 2:14dc1ec57f3b 2 #include "mbed.h"
vtoffoli 2:14dc1ec57f3b 3 #include "ADXL355.h"
vtoffoli 2:14dc1ec57f3b 4
vtoffoli 2:14dc1ec57f3b 5
vtoffoli 2:14dc1ec57f3b 6 //DigitalOut(cs); ///< DigitalOut instance for the chipselect of the ADXL
vtoffoli 2:14dc1ec57f3b 7 //DigitalOut int1; ///< DigitalOut instance for the chipselect of the ADXL
vtoffoli 2:14dc1ec57f3b 8 //DigitalOut int2; ///< DigitalOut instance for the chipselect of the ADXL
vtoffoli 3:ee052fdb4331 9
vtoffoli 3:ee052fdb4331 10 ADXL355::ADXL355(PinName cs_pin, PinName MOSI, PinName MISO, PinName SCK): adxl355(MOSI, MISO, SCK), cs(cs_pin)
vtoffoli 3:ee052fdb4331 11 {
vtoffoli 2:14dc1ec57f3b 12 cs = 1;
vtoffoli 2:14dc1ec57f3b 13 adxl355.format(8,_SPI_MODE);
vtoffoli 2:14dc1ec57f3b 14 adxl355.lock();
vtoffoli 2:14dc1ec57f3b 15 }
vtoffoli 2:14dc1ec57f3b 16
vtoffoli 2:14dc1ec57f3b 17 /** SPI bus frequency */
vtoffoli 3:ee052fdb4331 18 void ADXL355::frequency(int hz)
vtoffoli 3:ee052fdb4331 19 {
vtoffoli 2:14dc1ec57f3b 20 adxl355.frequency(hz);
vtoffoli 2:14dc1ec57f3b 21 }
vtoffoli 2:14dc1ec57f3b 22
vtoffoli 2:14dc1ec57f3b 23 /** Software resets */
vtoffoli 3:ee052fdb4331 24 void ADXL355::reset(void)
vtoffoli 3:ee052fdb4331 25 {
vtoffoli 2:14dc1ec57f3b 26 adxl355.format(8, _SPI_MODE);
vtoffoli 2:14dc1ec57f3b 27 cs = false;
vtoffoli 2:14dc1ec57f3b 28 // Writing Code 0x52 (representing the letter, R, in ASCII or unicode) to this register immediately resets the ADXL362.
vtoffoli 2:14dc1ec57f3b 29 write_reg(RESET, _RESET);
vtoffoli 2:14dc1ec57f3b 30 cs = true;
vtoffoli 2:14dc1ec57f3b 31 }
vtoffoli 3:ee052fdb4331 32 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 33 /** Writes the reg register with data */
vtoffoli 3:ee052fdb4331 34 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 35 void ADXL355::write_reg(ADXL355_register_t reg, uint8_t data)
vtoffoli 3:ee052fdb4331 36 {
vtoffoli 2:14dc1ec57f3b 37 adxl355.format(8, _SPI_MODE);
vtoffoli 2:14dc1ec57f3b 38 cs = false;
vtoffoli 3:ee052fdb4331 39 adxl355.write(static_cast<uint8_t>(reg<<1) | _WRITE_REG_CMD);
vtoffoli 2:14dc1ec57f3b 40 adxl355.write(data);
vtoffoli 2:14dc1ec57f3b 41 cs = true;
vtoffoli 2:14dc1ec57f3b 42 }
vtoffoli 3:ee052fdb4331 43 void ADXL355::write_reg_u16(ADXL355_register_t reg, uint16_t data)
vtoffoli 3:ee052fdb4331 44 {
vtoffoli 3:ee052fdb4331 45 adxl355.format(8, _SPI_MODE);
vtoffoli 3:ee052fdb4331 46 cs = false;
vtoffoli 3:ee052fdb4331 47 adxl355.write(static_cast<uint8_t>(reg<<1) | _WRITE_REG_CMD);
vtoffoli 3:ee052fdb4331 48 adxl355.write(static_cast<uint8_t>(data & 0xff));
vtoffoli 3:ee052fdb4331 49 adxl355.write(static_cast<uint8_t>((data & 0xff00) >> 8));
vtoffoli 3:ee052fdb4331 50 cs = true;
vtoffoli 3:ee052fdb4331 51 }
vtoffoli 3:ee052fdb4331 52 /** ----------------------------------- */
vtoffoli 2:14dc1ec57f3b 53 /** Reads the reg register */
vtoffoli 3:ee052fdb4331 54 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 55 uint8_t ADXL355::read_reg(ADXL355_register_t reg)
vtoffoli 3:ee052fdb4331 56 {
vtoffoli 2:14dc1ec57f3b 57 uint8_t ret_val;
vtoffoli 2:14dc1ec57f3b 58 adxl355.format(8, _SPI_MODE);
vtoffoli 2:14dc1ec57f3b 59 cs = false;
vtoffoli 3:ee052fdb4331 60 adxl355.write(static_cast<uint8_t>(reg<<1) | _READ_REG_CMD);
vtoffoli 2:14dc1ec57f3b 61 ret_val = adxl355.write(_DUMMY_BYTE);
vtoffoli 2:14dc1ec57f3b 62 cs = true;
vtoffoli 2:14dc1ec57f3b 63 return ret_val;
vtoffoli 2:14dc1ec57f3b 64 }
vtoffoli 3:ee052fdb4331 65 uint16_t ADXL355::read_reg_u16(ADXL355_register_t reg){
vtoffoli 3:ee052fdb4331 66 uint16_t ret_val = 0;
vtoffoli 3:ee052fdb4331 67 adxl355.format(8, _SPI_MODE);
vtoffoli 3:ee052fdb4331 68 cs = false;
vtoffoli 3:ee052fdb4331 69 adxl355.write(static_cast<uint8_t>(reg<<1) | _READ_REG_CMD);
vtoffoli 3:ee052fdb4331 70 ret_val = adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 71 ret_val = (ret_val<<8) | adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 72 cs = true;
vtoffoli 3:ee052fdb4331 73 return ret_val;
vtoffoli 3:ee052fdb4331 74 }
vtoffoli 3:ee052fdb4331 75 uint32_t ADXL355::read_reg_u32(ADXL355_register_t reg){
vtoffoli 3:ee052fdb4331 76 uint32_t ret_val = 0;
vtoffoli 3:ee052fdb4331 77 adxl355.format(8, _SPI_MODE);
vtoffoli 3:ee052fdb4331 78 cs = false;
vtoffoli 4:23b53636b576 79 adxl355.write((reg<<1) | _READ_REG_CMD);
vtoffoli 3:ee052fdb4331 80 ret_val = adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 81 ret_val = (ret_val<<8) | adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 82 ret_val = (ret_val<<8) | adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 83 cs = true;
vtoffoli 3:ee052fdb4331 84 return ret_val;
vtoffoli 3:ee052fdb4331 85 }
vtoffoli 3:ee052fdb4331 86 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 87 /** Sets the CTL registers */
vtoffoli 3:ee052fdb4331 88 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 89 void ADXL355::set_power_ctl_reg(uint8_t data){
vtoffoli 3:ee052fdb4331 90 write_reg(POWER_CTL, data);
vtoffoli 3:ee052fdb4331 91 }
vtoffoli 3:ee052fdb4331 92 void ADXL355::set_filter_ctl_reg(ADXL355_filter_ctl_t hpf, ADXL355_filter_ctl_t odr){
vtoffoli 3:ee052fdb4331 93 write_reg(FILTER, static_cast<uint8_t>(hpf|odr));
vtoffoli 3:ee052fdb4331 94 }
vtoffoli 3:ee052fdb4331 95 void ADXL355::set_clk(ADXL355_sync_ctl_t data) {
vtoffoli 3:ee052fdb4331 96 write_reg(SYNC, static_cast<uint8_t>(data));
vtoffoli 3:ee052fdb4331 97 }
vtoffoli 3:ee052fdb4331 98 void ADXL355::set_device(ADXL355_range_ctl_t range) {
vtoffoli 3:ee052fdb4331 99 write_reg(RANGE, static_cast<uint8_t>(range));
vtoffoli 3:ee052fdb4331 100 }
vtoffoli 3:ee052fdb4331 101 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 102 /** Read the STATUS registers */
vtoffoli 3:ee052fdb4331 103 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 104 uint8_t ADXL355::read_status(){
vtoffoli 3:ee052fdb4331 105 return read_reg(STATUS);
vtoffoli 3:ee052fdb4331 106 }
vtoffoli 3:ee052fdb4331 107 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 108 /** ADXL must be set in measurement */
vtoffoli 3:ee052fdb4331 109 /** mode to read the data registers */
vtoffoli 3:ee052fdb4331 110 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 111 uint32_t ADXL355::scanx(){
vtoffoli 3:ee052fdb4331 112 return read_reg_u32(XDATA3);
vtoffoli 3:ee052fdb4331 113 }
vtoffoli 3:ee052fdb4331 114 uint32_t ADXL355::scany(){
vtoffoli 3:ee052fdb4331 115 return read_reg_u32(YDATA3);
vtoffoli 3:ee052fdb4331 116 }
vtoffoli 3:ee052fdb4331 117 uint32_t ADXL355::scanz(){
vtoffoli 3:ee052fdb4331 118 return read_reg_u32(ZDATA3);
vtoffoli 3:ee052fdb4331 119 }
vtoffoli 3:ee052fdb4331 120 uint16_t ADXL355::scant(){
vtoffoli 3:ee052fdb4331 121 return read_reg_u16(TEMP2);
vtoffoli 3:ee052fdb4331 122 }
vtoffoli 3:ee052fdb4331 123 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 124 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 125 void ADXL355::set_activity_axis(ADXL355_act_ctl_t axis) {}
vtoffoli 3:ee052fdb4331 126 void ADXL355::set_activity_cnt(uint8_t count) {}
vtoffoli 3:ee052fdb4331 127 void ADXL355::set_activity_threshold(uint8_t data_h, uint8_t data_l) {
vtoffoli 3:ee052fdb4331 128 uint16_t ret_val = static_cast<uint16_t>((data_h<<8)|data_l);
vtoffoli 3:ee052fdb4331 129 write_reg_u16(ACT_THRESH_H, ret_val);
vtoffoli 3:ee052fdb4331 130 }
vtoffoli 3:ee052fdb4331 131 void ADXL355::set_inactivity() {}
vtoffoli 3:ee052fdb4331 132 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 133 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 134 void ADXL355::set_interrupt1_pin(PinName in, ADXL355_intmap_ctl_t mode) {}
vtoffoli 3:ee052fdb4331 135 void ADXL355::set_interrupt2_pin(PinName in, ADXL355_intmap_ctl_t mode) {}
vtoffoli 3:ee052fdb4331 136 void ADXL355::enable_interrupt1() {}
vtoffoli 3:ee052fdb4331 137 void ADXL355::enable_interrupt2() {}
vtoffoli 3:ee052fdb4331 138 void ADXL355::disable_interrupt1() {}
vtoffoli 3:ee052fdb4331 139 void ADXL355::disable_interrupt2() {}
vtoffoli 3:ee052fdb4331 140 void ADXL355::set_polling_interrupt1_pin(uint8_t data) {}
vtoffoli 3:ee052fdb4331 141 void ADXL355::set_polling_interrupt2_pin(uint8_t data) {}
vtoffoli 3:ee052fdb4331 142 bool get_int1() {}
vtoffoli 3:ee052fdb4331 143 bool get_int2() {}
vtoffoli 3:ee052fdb4331 144 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 145 /** FIFO set up and read operation */
vtoffoli 3:ee052fdb4331 146 /** ----------------------------------- */
vtoffoli 3:ee052fdb4331 147 uint8_t ADXL355::fifo_read_nr_of_entries(){
vtoffoli 3:ee052fdb4331 148 return read_reg(FIFO_ENTRIES);
vtoffoli 3:ee052fdb4331 149 }
vtoffoli 3:ee052fdb4331 150 void ADXL355::fifo_setup(uint8_t nr_of_entries){
vtoffoli 3:ee052fdb4331 151 if (nr_of_entries > 0x60) {
vtoffoli 3:ee052fdb4331 152 nr_of_entries = nr_of_entries;
vtoffoli 3:ee052fdb4331 153 }
vtoffoli 3:ee052fdb4331 154 write_reg(FIFO_SAMPLES, nr_of_entries);
vtoffoli 3:ee052fdb4331 155 }
vtoffoli 3:ee052fdb4331 156 uint32_t ADXL355::fifo_read_u32() {
vtoffoli 3:ee052fdb4331 157 uint32_t ret_val = 0;
vtoffoli 3:ee052fdb4331 158 adxl355.format(8, _SPI_MODE);
vtoffoli 3:ee052fdb4331 159 cs = false;
vtoffoli 3:ee052fdb4331 160 adxl355.write(_READ_FIFO_CMD);
vtoffoli 3:ee052fdb4331 161 ret_val = adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 162 ret_val = (ret_val<<8) | static_cast<uint8_t>(adxl355.write(_DUMMY_BYTE));
vtoffoli 3:ee052fdb4331 163 ret_val = (ret_val<<4) | static_cast<uint8_t>(adxl355.write(_DUMMY_BYTE)>>4);
vtoffoli 3:ee052fdb4331 164 cs = true;
vtoffoli 3:ee052fdb4331 165 return ret_val;
vtoffoli 3:ee052fdb4331 166 }
vtoffoli 3:ee052fdb4331 167 uint64_t ADXL355::fifo_scan() {
vtoffoli 3:ee052fdb4331 168 uint64_t ret_val = 0;
vtoffoli 3:ee052fdb4331 169 uint32_t x = 0, y = 0, z = 0, dummy;
vtoffoli 3:ee052fdb4331 170 adxl355.format(8, _SPI_MODE);
vtoffoli 3:ee052fdb4331 171 cs = false;
vtoffoli 3:ee052fdb4331 172 adxl355.write(_READ_FIFO_CMD);
vtoffoli 3:ee052fdb4331 173 for(uint8_t i = 0; i < 3; i++) {
vtoffoli 3:ee052fdb4331 174 dummy = adxl355.write(_DUMMY_BYTE);
vtoffoli 3:ee052fdb4331 175 dummy = (dummy<<8) | static_cast<uint8_t>(adxl355.write(_DUMMY_BYTE));
vtoffoli 3:ee052fdb4331 176 dummy = (dummy<<4) | static_cast<uint8_t>(adxl355.write(_DUMMY_BYTE)>>4);
vtoffoli 3:ee052fdb4331 177 dummy = dummy & 0xffff;
vtoffoli 3:ee052fdb4331 178 switch(i) {
vtoffoli 3:ee052fdb4331 179 case 0: // x
vtoffoli 3:ee052fdb4331 180 x = dummy;
vtoffoli 3:ee052fdb4331 181 break;
vtoffoli 3:ee052fdb4331 182 case 1: // y
vtoffoli 3:ee052fdb4331 183 y = dummy;
vtoffoli 3:ee052fdb4331 184 break;
vtoffoli 3:ee052fdb4331 185 case 2: // z
vtoffoli 3:ee052fdb4331 186 z = dummy;
vtoffoli 3:ee052fdb4331 187 break;
vtoffoli 3:ee052fdb4331 188 }
vtoffoli 3:ee052fdb4331 189 }
vtoffoli 3:ee052fdb4331 190 cs = true;
vtoffoli 3:ee052fdb4331 191 // format (24)xx(24)yy(24)zz
vtoffoli 3:ee052fdb4331 192 ret_val = static_cast<uint64_t> (x) << 48;
vtoffoli 3:ee052fdb4331 193 ret_val |= static_cast<uint64_t>(y) << 24;
vtoffoli 3:ee052fdb4331 194 ret_val |= static_cast<uint64_t>(z) ;
vtoffoli 3:ee052fdb4331 195 return ret_val;
vtoffoli 3:ee052fdb4331 196 }