Marcelo Barros / sens_itf

Generic communication interface between the wireless board (mote) and the sensor board. Any kind of sensor board can be connected to the mote using this specification given it provides a SPI peripheral, one input pin with interrupt capability and one digital output. The sensor board must implement a special register set from which all required information can be retrieved. Protocol: http://is.gd/wuQorh Github: http://is.gd/ySj1L9

Dependencies:   mbed-src

TSI/TSISensor.cpp@1:acdf490d94a7, 2014-04-08 (annotated)

Committer:
marcelobarrosalmeida
Date:
Tue Apr 08 16:34:20 2014 +0000
Revision:
1:acdf490d94a7
Adding accel to sensor list

Who changed what in which revision?

UserRevisionLine numberNew contents of line
marcelobarrosalmeida 1:acdf490d94a7 1 /* Freescale Semiconductor Inc.
marcelobarrosalmeida 1:acdf490d94a7 2 * (c) Copyright 2004-2005 Freescale Semiconductor, Inc.
marcelobarrosalmeida 1:acdf490d94a7 3 * (c) Copyright 2001-2004 Motorola, Inc.
marcelobarrosalmeida 1:acdf490d94a7 4 *
marcelobarrosalmeida 1:acdf490d94a7 5 * mbed Microcontroller Library
marcelobarrosalmeida 1:acdf490d94a7 6 * (c) Copyright 2009-2012 ARM Limited.
marcelobarrosalmeida 1:acdf490d94a7 7 *
marcelobarrosalmeida 1:acdf490d94a7 8 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
marcelobarrosalmeida 1:acdf490d94a7 9 * and associated documentation files (the "Software"), to deal in the Software without
marcelobarrosalmeida 1:acdf490d94a7 10 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
marcelobarrosalmeida 1:acdf490d94a7 11 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
marcelobarrosalmeida 1:acdf490d94a7 12 * Software is furnished to do so, subject to the following conditions:
marcelobarrosalmeida 1:acdf490d94a7 13 *
marcelobarrosalmeida 1:acdf490d94a7 14 * The above copyright notice and this permission notice shall be included in all copies or
marcelobarrosalmeida 1:acdf490d94a7 15 * substantial portions of the Software.
marcelobarrosalmeida 1:acdf490d94a7 16 *
marcelobarrosalmeida 1:acdf490d94a7 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
marcelobarrosalmeida 1:acdf490d94a7 18 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
marcelobarrosalmeida 1:acdf490d94a7 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
marcelobarrosalmeida 1:acdf490d94a7 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
marcelobarrosalmeida 1:acdf490d94a7 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
marcelobarrosalmeida 1:acdf490d94a7 22 */
marcelobarrosalmeida 1:acdf490d94a7 23
marcelobarrosalmeida 1:acdf490d94a7 24 #include "mbed.h"
marcelobarrosalmeida 1:acdf490d94a7 25 #include "TSISensor.h"
marcelobarrosalmeida 1:acdf490d94a7 26
marcelobarrosalmeida 1:acdf490d94a7 27 #define NO_TOUCH 0
marcelobarrosalmeida 1:acdf490d94a7 28 #define SLIDER_LENGTH 40 //LENGTH in mm
marcelobarrosalmeida 1:acdf490d94a7 29 #define TOTAL_ELECTRODE 3
marcelobarrosalmeida 1:acdf490d94a7 30
marcelobarrosalmeida 1:acdf490d94a7 31 #define TSI0a 0
marcelobarrosalmeida 1:acdf490d94a7 32 #define TSI1 1
marcelobarrosalmeida 1:acdf490d94a7 33 #define TSI2 2
marcelobarrosalmeida 1:acdf490d94a7 34 #define TSI3 3
marcelobarrosalmeida 1:acdf490d94a7 35 #define TSI4 4
marcelobarrosalmeida 1:acdf490d94a7 36 #define TSI5 5
marcelobarrosalmeida 1:acdf490d94a7 37 #define TSI6 6
marcelobarrosalmeida 1:acdf490d94a7 38 #define TSI7 7
marcelobarrosalmeida 1:acdf490d94a7 39 #define TSI8 8
marcelobarrosalmeida 1:acdf490d94a7 40 #define TSI9 9
marcelobarrosalmeida 1:acdf490d94a7 41 #define TSI10 10
marcelobarrosalmeida 1:acdf490d94a7 42 #define TSI11 11
marcelobarrosalmeida 1:acdf490d94a7 43 #define TSI12 12
marcelobarrosalmeida 1:acdf490d94a7 44 #define TSI13 13
marcelobarrosalmeida 1:acdf490d94a7 45 #define TSI14 14
marcelobarrosalmeida 1:acdf490d94a7 46 #define TSI15 15
marcelobarrosalmeida 1:acdf490d94a7 47
marcelobarrosalmeida 1:acdf490d94a7 48 /*Chose the correct TSI channel for the electrode number*/
marcelobarrosalmeida 1:acdf490d94a7 49 #define ELECTRODE0 TSI9
marcelobarrosalmeida 1:acdf490d94a7 50 #define ELECTRODE1 TSI10
marcelobarrosalmeida 1:acdf490d94a7 51 #define ELECTRODE2 TSI0a
marcelobarrosalmeida 1:acdf490d94a7 52 #define ELECTRODE3 TSI1
marcelobarrosalmeida 1:acdf490d94a7 53 #define ELECTRODE4 TSI2
marcelobarrosalmeida 1:acdf490d94a7 54 #define ELECTRODE5 TSI3
marcelobarrosalmeida 1:acdf490d94a7 55 #define ELECTRODE6 TSI4
marcelobarrosalmeida 1:acdf490d94a7 56 #define ELECTRODE7 TSI5
marcelobarrosalmeida 1:acdf490d94a7 57 #define ELECTRODE8 TSI6
marcelobarrosalmeida 1:acdf490d94a7 58 #define ELECTRODE9 TSI7
marcelobarrosalmeida 1:acdf490d94a7 59 #define ELECTRODE10 TSI8
marcelobarrosalmeida 1:acdf490d94a7 60 #define ELECTRODE11 TSI11
marcelobarrosalmeida 1:acdf490d94a7 61 #define ELECTRODE12 TSI12
marcelobarrosalmeida 1:acdf490d94a7 62 #define ELECTRODE13 TSI13
marcelobarrosalmeida 1:acdf490d94a7 63 #define ELECTRODE14 TSI14
marcelobarrosalmeida 1:acdf490d94a7 64 #define ELECTRODE15 TSI15
marcelobarrosalmeida 1:acdf490d94a7 65
marcelobarrosalmeida 1:acdf490d94a7 66 #define THRESHOLD0 100
marcelobarrosalmeida 1:acdf490d94a7 67 #define THRESHOLD1 100
marcelobarrosalmeida 1:acdf490d94a7 68 #define THRESHOLD2 100
marcelobarrosalmeida 1:acdf490d94a7 69 #define THRESHOLD3 100
marcelobarrosalmeida 1:acdf490d94a7 70 #define THRESHOLD4 100
marcelobarrosalmeida 1:acdf490d94a7 71 #define THRESHOLD5 100
marcelobarrosalmeida 1:acdf490d94a7 72 #define THRESHOLD6 100
marcelobarrosalmeida 1:acdf490d94a7 73 #define THRESHOLD7 100
marcelobarrosalmeida 1:acdf490d94a7 74 #define THRESHOLD8 100
marcelobarrosalmeida 1:acdf490d94a7 75 #define THRESHOLD9 100
marcelobarrosalmeida 1:acdf490d94a7 76 #define THRESHOLD10 100
marcelobarrosalmeida 1:acdf490d94a7 77 #define THRESHOLD11 100
marcelobarrosalmeida 1:acdf490d94a7 78 #define THRESHOLD12 100
marcelobarrosalmeida 1:acdf490d94a7 79 #define THRESHOLD13 100
marcelobarrosalmeida 1:acdf490d94a7 80 #define THRESHOLD14 100
marcelobarrosalmeida 1:acdf490d94a7 81 #define THRESHOLD15 100
marcelobarrosalmeida 1:acdf490d94a7 82
marcelobarrosalmeida 1:acdf490d94a7 83 static uint8_t total_electrode = TOTAL_ELECTRODE;
marcelobarrosalmeida 1:acdf490d94a7 84 static uint8_t elec_array[16]={ELECTRODE0,ELECTRODE1,ELECTRODE2,ELECTRODE3,ELECTRODE4,ELECTRODE5,
marcelobarrosalmeida 1:acdf490d94a7 85 ELECTRODE6,ELECTRODE7,ELECTRODE8,ELECTRODE9,ELECTRODE10,ELECTRODE11,
marcelobarrosalmeida 1:acdf490d94a7 86 ELECTRODE12,ELECTRODE13,ELECTRODE14,ELECTRODE15};
marcelobarrosalmeida 1:acdf490d94a7 87 static uint16_t gu16TSICount[16];
marcelobarrosalmeida 1:acdf490d94a7 88 static uint16_t gu16Baseline[16];
marcelobarrosalmeida 1:acdf490d94a7 89 static uint16_t gu16Threshold[16]={THRESHOLD0,THRESHOLD1,THRESHOLD2,THRESHOLD3,THRESHOLD4,THRESHOLD5,
marcelobarrosalmeida 1:acdf490d94a7 90 THRESHOLD6,THRESHOLD7,THRESHOLD8,THRESHOLD9,THRESHOLD10,THRESHOLD11,
marcelobarrosalmeida 1:acdf490d94a7 91 THRESHOLD12,THRESHOLD13,THRESHOLD14,THRESHOLD15};
marcelobarrosalmeida 1:acdf490d94a7 92 static uint16_t gu16Delta[16];
marcelobarrosalmeida 1:acdf490d94a7 93 static uint8_t ongoing_elec;
marcelobarrosalmeida 1:acdf490d94a7 94 static uint8_t end_flag = 1;
marcelobarrosalmeida 1:acdf490d94a7 95
marcelobarrosalmeida 1:acdf490d94a7 96 static uint8_t SliderPercentegePosition[2] = {NO_TOUCH,NO_TOUCH};
marcelobarrosalmeida 1:acdf490d94a7 97 static uint8_t SliderDistancePosition[2] = {NO_TOUCH,NO_TOUCH};
marcelobarrosalmeida 1:acdf490d94a7 98 static uint32_t AbsolutePercentegePosition = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 99 static uint32_t AbsoluteDistancePosition = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 100
marcelobarrosalmeida 1:acdf490d94a7 101 static void tsi_irq();
marcelobarrosalmeida 1:acdf490d94a7 102
marcelobarrosalmeida 1:acdf490d94a7 103 TSISensor::TSISensor() {
marcelobarrosalmeida 1:acdf490d94a7 104 SIM->SCGC5 |= SIM_SCGC5_PORTB_MASK;
marcelobarrosalmeida 1:acdf490d94a7 105 SIM->SCGC5 |= SIM_SCGC5_TSI_MASK;
marcelobarrosalmeida 1:acdf490d94a7 106
marcelobarrosalmeida 1:acdf490d94a7 107 TSI0->GENCS |= (TSI_GENCS_ESOR_MASK
marcelobarrosalmeida 1:acdf490d94a7 108 | TSI_GENCS_MODE(0)
marcelobarrosalmeida 1:acdf490d94a7 109 | TSI_GENCS_REFCHRG(4)
marcelobarrosalmeida 1:acdf490d94a7 110 | TSI_GENCS_DVOLT(0)
marcelobarrosalmeida 1:acdf490d94a7 111 | TSI_GENCS_EXTCHRG(7)
marcelobarrosalmeida 1:acdf490d94a7 112 | TSI_GENCS_PS(4)
marcelobarrosalmeida 1:acdf490d94a7 113 | TSI_GENCS_NSCN(11)
marcelobarrosalmeida 1:acdf490d94a7 114 | TSI_GENCS_TSIIEN_MASK
marcelobarrosalmeida 1:acdf490d94a7 115 | TSI_GENCS_STPE_MASK
marcelobarrosalmeida 1:acdf490d94a7 116 );
marcelobarrosalmeida 1:acdf490d94a7 117
marcelobarrosalmeida 1:acdf490d94a7 118 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK;
marcelobarrosalmeida 1:acdf490d94a7 119
marcelobarrosalmeida 1:acdf490d94a7 120 NVIC_SetVector(TSI0_IRQn, (uint32_t)&tsi_irq);
marcelobarrosalmeida 1:acdf490d94a7 121 NVIC_EnableIRQ(TSI0_IRQn);
marcelobarrosalmeida 1:acdf490d94a7 122
marcelobarrosalmeida 1:acdf490d94a7 123 selfCalibration();
marcelobarrosalmeida 1:acdf490d94a7 124 }
marcelobarrosalmeida 1:acdf490d94a7 125
marcelobarrosalmeida 1:acdf490d94a7 126 void TSISensor::TSISensor_reset(void) {
marcelobarrosalmeida 1:acdf490d94a7 127 SIM->SCGC5 |= SIM_SCGC5_PORTB_MASK;
marcelobarrosalmeida 1:acdf490d94a7 128 SIM->SCGC5 |= SIM_SCGC5_TSI_MASK;
marcelobarrosalmeida 1:acdf490d94a7 129
marcelobarrosalmeida 1:acdf490d94a7 130 TSI0->GENCS |= (TSI_GENCS_ESOR_MASK
marcelobarrosalmeida 1:acdf490d94a7 131 | TSI_GENCS_MODE(0)
marcelobarrosalmeida 1:acdf490d94a7 132 | TSI_GENCS_REFCHRG(4)
marcelobarrosalmeida 1:acdf490d94a7 133 | TSI_GENCS_DVOLT(0)
marcelobarrosalmeida 1:acdf490d94a7 134 | TSI_GENCS_EXTCHRG(7)
marcelobarrosalmeida 1:acdf490d94a7 135 | TSI_GENCS_PS(4)
marcelobarrosalmeida 1:acdf490d94a7 136 | TSI_GENCS_NSCN(11)
marcelobarrosalmeida 1:acdf490d94a7 137 | TSI_GENCS_TSIIEN_MASK
marcelobarrosalmeida 1:acdf490d94a7 138 | TSI_GENCS_STPE_MASK
marcelobarrosalmeida 1:acdf490d94a7 139 );
marcelobarrosalmeida 1:acdf490d94a7 140
marcelobarrosalmeida 1:acdf490d94a7 141 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK;
marcelobarrosalmeida 1:acdf490d94a7 142
marcelobarrosalmeida 1:acdf490d94a7 143 //NVIC_SetVector(TSI0_IRQn, (uint32_t)&tsi_irq);
marcelobarrosalmeida 1:acdf490d94a7 144 //NVIC_EnableIRQ(TSI0_IRQn);
marcelobarrosalmeida 1:acdf490d94a7 145
marcelobarrosalmeida 1:acdf490d94a7 146 selfCalibration();
marcelobarrosalmeida 1:acdf490d94a7 147 }
marcelobarrosalmeida 1:acdf490d94a7 148
marcelobarrosalmeida 1:acdf490d94a7 149 void TSISensor::selfCalibration(void)
marcelobarrosalmeida 1:acdf490d94a7 150 {
marcelobarrosalmeida 1:acdf490d94a7 151 unsigned char cnt;
marcelobarrosalmeida 1:acdf490d94a7 152 unsigned char trigger_backup;
marcelobarrosalmeida 1:acdf490d94a7 153
marcelobarrosalmeida 1:acdf490d94a7 154 TSI0->GENCS |= TSI_GENCS_EOSF_MASK; // Clear End of Scan Flag
marcelobarrosalmeida 1:acdf490d94a7 155 TSI0->GENCS &= ~TSI_GENCS_TSIEN_MASK; // Disable TSI module
marcelobarrosalmeida 1:acdf490d94a7 156
marcelobarrosalmeida 1:acdf490d94a7 157 if(TSI0->GENCS & TSI_GENCS_STM_MASK) // Back-up TSI Trigger mode from Application
marcelobarrosalmeida 1:acdf490d94a7 158 trigger_backup = 1;
marcelobarrosalmeida 1:acdf490d94a7 159 else
marcelobarrosalmeida 1:acdf490d94a7 160 trigger_backup = 0;
marcelobarrosalmeida 1:acdf490d94a7 161
marcelobarrosalmeida 1:acdf490d94a7 162 TSI0->GENCS &= ~TSI_GENCS_STM_MASK; // Use SW trigger
marcelobarrosalmeida 1:acdf490d94a7 163 TSI0->GENCS &= ~TSI_GENCS_TSIIEN_MASK; // Enable TSI interrupts
marcelobarrosalmeida 1:acdf490d94a7 164
marcelobarrosalmeida 1:acdf490d94a7 165 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK; // Enable TSI module
marcelobarrosalmeida 1:acdf490d94a7 166
marcelobarrosalmeida 1:acdf490d94a7 167 for(cnt=0; cnt < total_electrode; cnt++) // Get Counts when Electrode not pressed
marcelobarrosalmeida 1:acdf490d94a7 168 {
marcelobarrosalmeida 1:acdf490d94a7 169 TSI0->DATA = ((elec_array[cnt] << TSI_DATA_TSICH_SHIFT) );
marcelobarrosalmeida 1:acdf490d94a7 170 TSI0->DATA |= TSI_DATA_SWTS_MASK;
marcelobarrosalmeida 1:acdf490d94a7 171 while(!(TSI0->GENCS & TSI_GENCS_EOSF_MASK));
marcelobarrosalmeida 1:acdf490d94a7 172 TSI0->GENCS |= TSI_GENCS_EOSF_MASK;
marcelobarrosalmeida 1:acdf490d94a7 173 gu16Baseline[cnt] = (TSI0->DATA & TSI_DATA_TSICNT_MASK);
marcelobarrosalmeida 1:acdf490d94a7 174 }
marcelobarrosalmeida 1:acdf490d94a7 175
marcelobarrosalmeida 1:acdf490d94a7 176 TSI0->GENCS &= ~TSI_GENCS_TSIEN_MASK; // Disable TSI module
marcelobarrosalmeida 1:acdf490d94a7 177 TSI0->GENCS |= TSI_GENCS_TSIIEN_MASK; // Enale TSI interrupt
marcelobarrosalmeida 1:acdf490d94a7 178 if(trigger_backup) // Restore trigger mode
marcelobarrosalmeida 1:acdf490d94a7 179 TSI0->GENCS |= TSI_GENCS_STM_MASK;
marcelobarrosalmeida 1:acdf490d94a7 180 else
marcelobarrosalmeida 1:acdf490d94a7 181 TSI0->GENCS &= ~TSI_GENCS_STM_MASK;
marcelobarrosalmeida 1:acdf490d94a7 182
marcelobarrosalmeida 1:acdf490d94a7 183 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK; // Enable TSI module
marcelobarrosalmeida 1:acdf490d94a7 184
marcelobarrosalmeida 1:acdf490d94a7 185 TSI0->DATA = ((elec_array[0]<<TSI_DATA_TSICH_SHIFT) );
marcelobarrosalmeida 1:acdf490d94a7 186 TSI0->DATA |= TSI_DATA_SWTS_MASK;
marcelobarrosalmeida 1:acdf490d94a7 187 }
marcelobarrosalmeida 1:acdf490d94a7 188
marcelobarrosalmeida 1:acdf490d94a7 189 void TSISensor::sliderRead(void ) {
marcelobarrosalmeida 1:acdf490d94a7 190 if(end_flag) {
marcelobarrosalmeida 1:acdf490d94a7 191 end_flag = 0;
marcelobarrosalmeida 1:acdf490d94a7 192 if((gu16Delta[0] > gu16Threshold[0])||(gu16Delta[1] > gu16Threshold[1])) {
marcelobarrosalmeida 1:acdf490d94a7 193 SliderPercentegePosition[0] = (gu16Delta[0]*100)/(gu16Delta[0]+gu16Delta[1]);
marcelobarrosalmeida 1:acdf490d94a7 194 SliderPercentegePosition[1] = (gu16Delta[1]*100)/(gu16Delta[0]+gu16Delta[1]);
marcelobarrosalmeida 1:acdf490d94a7 195 SliderDistancePosition[0] = (SliderPercentegePosition[0]* SLIDER_LENGTH)/100;
marcelobarrosalmeida 1:acdf490d94a7 196 SliderDistancePosition[1] = (SliderPercentegePosition[1]* SLIDER_LENGTH)/100;
marcelobarrosalmeida 1:acdf490d94a7 197 AbsolutePercentegePosition = ((100 - SliderPercentegePosition[0]) + SliderPercentegePosition[1])/2;
marcelobarrosalmeida 1:acdf490d94a7 198 AbsoluteDistancePosition = ((SLIDER_LENGTH - SliderDistancePosition[0]) + SliderDistancePosition[1])/2;
marcelobarrosalmeida 1:acdf490d94a7 199 } else {
marcelobarrosalmeida 1:acdf490d94a7 200 SliderPercentegePosition[0] = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 201 SliderPercentegePosition[1] = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 202 SliderDistancePosition[0] = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 203 SliderDistancePosition[1] = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 204 AbsolutePercentegePosition = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 205 AbsoluteDistancePosition = NO_TOUCH;
marcelobarrosalmeida 1:acdf490d94a7 206 }
marcelobarrosalmeida 1:acdf490d94a7 207 }
marcelobarrosalmeida 1:acdf490d94a7 208 }
marcelobarrosalmeida 1:acdf490d94a7 209
marcelobarrosalmeida 1:acdf490d94a7 210 float TSISensor::readPercentage() {
marcelobarrosalmeida 1:acdf490d94a7 211 sliderRead();
marcelobarrosalmeida 1:acdf490d94a7 212 return (float)AbsolutePercentegePosition/100.0;
marcelobarrosalmeida 1:acdf490d94a7 213 }
marcelobarrosalmeida 1:acdf490d94a7 214
marcelobarrosalmeida 1:acdf490d94a7 215 uint8_t TSISensor::readDistance() {
marcelobarrosalmeida 1:acdf490d94a7 216 sliderRead();
marcelobarrosalmeida 1:acdf490d94a7 217 return AbsoluteDistancePosition;
marcelobarrosalmeida 1:acdf490d94a7 218 }
marcelobarrosalmeida 1:acdf490d94a7 219
marcelobarrosalmeida 1:acdf490d94a7 220 uint16_t TSISensor::readValue(uint8_t index)
marcelobarrosalmeida 1:acdf490d94a7 221 {
marcelobarrosalmeida 1:acdf490d94a7 222 return gu16TSICount[index];
marcelobarrosalmeida 1:acdf490d94a7 223 }
marcelobarrosalmeida 1:acdf490d94a7 224
marcelobarrosalmeida 1:acdf490d94a7 225 static void changeElectrode(void)
marcelobarrosalmeida 1:acdf490d94a7 226 {
marcelobarrosalmeida 1:acdf490d94a7 227 int16_t u16temp_delta;
marcelobarrosalmeida 1:acdf490d94a7 228
marcelobarrosalmeida 1:acdf490d94a7 229 gu16TSICount[ongoing_elec] = (TSI0->DATA & TSI_DATA_TSICNT_MASK); // Save Counts for current electrode
marcelobarrosalmeida 1:acdf490d94a7 230 u16temp_delta = gu16TSICount[ongoing_elec] - gu16Baseline[ongoing_elec]; // Obtains Counts Delta from callibration reference
marcelobarrosalmeida 1:acdf490d94a7 231 if(u16temp_delta < 0)
marcelobarrosalmeida 1:acdf490d94a7 232 gu16Delta[ongoing_elec] = 0;
marcelobarrosalmeida 1:acdf490d94a7 233 else
marcelobarrosalmeida 1:acdf490d94a7 234 gu16Delta[ongoing_elec] = u16temp_delta;
marcelobarrosalmeida 1:acdf490d94a7 235
marcelobarrosalmeida 1:acdf490d94a7 236 //Change Electrode to Scan
marcelobarrosalmeida 1:acdf490d94a7 237 if(total_electrode > 1)
marcelobarrosalmeida 1:acdf490d94a7 238 {
marcelobarrosalmeida 1:acdf490d94a7 239 if((total_electrode-1) > ongoing_elec)
marcelobarrosalmeida 1:acdf490d94a7 240 ongoing_elec++;
marcelobarrosalmeida 1:acdf490d94a7 241 else
marcelobarrosalmeida 1:acdf490d94a7 242 ongoing_elec = 0;
marcelobarrosalmeida 1:acdf490d94a7 243
marcelobarrosalmeida 1:acdf490d94a7 244 TSI0->DATA = ((elec_array[ongoing_elec]<<TSI_DATA_TSICH_SHIFT) );
marcelobarrosalmeida 1:acdf490d94a7 245 TSI0->DATA |= TSI_DATA_SWTS_MASK;
marcelobarrosalmeida 1:acdf490d94a7 246 }
marcelobarrosalmeida 1:acdf490d94a7 247 }
marcelobarrosalmeida 1:acdf490d94a7 248
marcelobarrosalmeida 1:acdf490d94a7 249 void tsi_irq(void)
marcelobarrosalmeida 1:acdf490d94a7 250 {
marcelobarrosalmeida 1:acdf490d94a7 251 end_flag = 1;
marcelobarrosalmeida 1:acdf490d94a7 252 TSI0->GENCS |= TSI_GENCS_EOSF_MASK; // Clear End of Scan Flag
marcelobarrosalmeida 1:acdf490d94a7 253 changeElectrode();
marcelobarrosalmeida 1:acdf490d94a7 254 }