Piotr Woźniak / Mbed 2 deprecated KL46Z-Lab2_fullll

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Dependencies:   MAG3110 MMA8451Q SLCD- TSI USBDevice mbed

TSI/TSISensor.cpp@0:339b7abfa147, 2014-04-16 (annotated)

Committer:
Osator
Date:
Wed Apr 16 12:20:00 2014 +0000
Revision:
0:339b7abfa147
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
Osator 0:339b7abfa147 1 /* Freescale Semiconductor Inc.
Osator 0:339b7abfa147 2 * (c) Copyright 2004-2005 Freescale Semiconductor, Inc.
Osator 0:339b7abfa147 3 * (c) Copyright 2001-2004 Motorola, Inc.
Osator 0:339b7abfa147 4 *
Osator 0:339b7abfa147 5 * mbed Microcontroller Library
Osator 0:339b7abfa147 6 * (c) Copyright 2009-2012 ARM Limited.
Osator 0:339b7abfa147 7 *
Osator 0:339b7abfa147 8 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Osator 0:339b7abfa147 9 * and associated documentation files (the "Software"), to deal in the Software without
Osator 0:339b7abfa147 10 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Osator 0:339b7abfa147 11 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Osator 0:339b7abfa147 12 * Software is furnished to do so, subject to the following conditions:
Osator 0:339b7abfa147 13 *
Osator 0:339b7abfa147 14 * The above copyright notice and this permission notice shall be included in all copies or
Osator 0:339b7abfa147 15 * substantial portions of the Software.
Osator 0:339b7abfa147 16 *
Osator 0:339b7abfa147 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Osator 0:339b7abfa147 18 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Osator 0:339b7abfa147 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Osator 0:339b7abfa147 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Osator 0:339b7abfa147 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Osator 0:339b7abfa147 22 */
Osator 0:339b7abfa147 23
Osator 0:339b7abfa147 24 #include "mbed.h"
Osator 0:339b7abfa147 25 #include "TSISensor.h"
Osator 0:339b7abfa147 26
Osator 0:339b7abfa147 27 #define NO_TOUCH 0
Osator 0:339b7abfa147 28 #define SLIDER_LENGTH 40 //LENGTH in mm
Osator 0:339b7abfa147 29 #define TOTAL_ELECTRODE 3
Osator 0:339b7abfa147 30
Osator 0:339b7abfa147 31 #define TSI0a 0
Osator 0:339b7abfa147 32 #define TSI1 1
Osator 0:339b7abfa147 33 #define TSI2 2
Osator 0:339b7abfa147 34 #define TSI3 3
Osator 0:339b7abfa147 35 #define TSI4 4
Osator 0:339b7abfa147 36 #define TSI5 5
Osator 0:339b7abfa147 37 #define TSI6 6
Osator 0:339b7abfa147 38 #define TSI7 7
Osator 0:339b7abfa147 39 #define TSI8 8
Osator 0:339b7abfa147 40 #define TSI9 9
Osator 0:339b7abfa147 41 #define TSI10 10
Osator 0:339b7abfa147 42 #define TSI11 11
Osator 0:339b7abfa147 43 #define TSI12 12
Osator 0:339b7abfa147 44 #define TSI13 13
Osator 0:339b7abfa147 45 #define TSI14 14
Osator 0:339b7abfa147 46 #define TSI15 15
Osator 0:339b7abfa147 47
Osator 0:339b7abfa147 48 /*Chose the correct TSI channel for the electrode number*/
Osator 0:339b7abfa147 49 #define ELECTRODE0 TSI9
Osator 0:339b7abfa147 50 #define ELECTRODE1 TSI10
Osator 0:339b7abfa147 51 #define ELECTRODE2 TSI0a
Osator 0:339b7abfa147 52 #define ELECTRODE3 TSI1
Osator 0:339b7abfa147 53 #define ELECTRODE4 TSI2
Osator 0:339b7abfa147 54 #define ELECTRODE5 TSI3
Osator 0:339b7abfa147 55 #define ELECTRODE6 TSI4
Osator 0:339b7abfa147 56 #define ELECTRODE7 TSI5
Osator 0:339b7abfa147 57 #define ELECTRODE8 TSI6
Osator 0:339b7abfa147 58 #define ELECTRODE9 TSI7
Osator 0:339b7abfa147 59 #define ELECTRODE10 TSI8
Osator 0:339b7abfa147 60 #define ELECTRODE11 TSI11
Osator 0:339b7abfa147 61 #define ELECTRODE12 TSI12
Osator 0:339b7abfa147 62 #define ELECTRODE13 TSI13
Osator 0:339b7abfa147 63 #define ELECTRODE14 TSI14
Osator 0:339b7abfa147 64 #define ELECTRODE15 TSI15
Osator 0:339b7abfa147 65
Osator 0:339b7abfa147 66 #define THRESHOLD0 100
Osator 0:339b7abfa147 67 #define THRESHOLD1 100
Osator 0:339b7abfa147 68 #define THRESHOLD2 100
Osator 0:339b7abfa147 69 #define THRESHOLD3 100
Osator 0:339b7abfa147 70 #define THRESHOLD4 100
Osator 0:339b7abfa147 71 #define THRESHOLD5 100
Osator 0:339b7abfa147 72 #define THRESHOLD6 100
Osator 0:339b7abfa147 73 #define THRESHOLD7 100
Osator 0:339b7abfa147 74 #define THRESHOLD8 100
Osator 0:339b7abfa147 75 #define THRESHOLD9 100
Osator 0:339b7abfa147 76 #define THRESHOLD10 100
Osator 0:339b7abfa147 77 #define THRESHOLD11 100
Osator 0:339b7abfa147 78 #define THRESHOLD12 100
Osator 0:339b7abfa147 79 #define THRESHOLD13 100
Osator 0:339b7abfa147 80 #define THRESHOLD14 100
Osator 0:339b7abfa147 81 #define THRESHOLD15 100
Osator 0:339b7abfa147 82
Osator 0:339b7abfa147 83 static uint8_t total_electrode = TOTAL_ELECTRODE;
Osator 0:339b7abfa147 84 static uint8_t elec_array[16]={ELECTRODE0,ELECTRODE1,ELECTRODE2,ELECTRODE3,ELECTRODE4,ELECTRODE5,
Osator 0:339b7abfa147 85 ELECTRODE6,ELECTRODE7,ELECTRODE8,ELECTRODE9,ELECTRODE10,ELECTRODE11,
Osator 0:339b7abfa147 86 ELECTRODE12,ELECTRODE13,ELECTRODE14,ELECTRODE15};
Osator 0:339b7abfa147 87 static uint16_t gu16TSICount[16];
Osator 0:339b7abfa147 88 static uint16_t gu16Baseline[16];
Osator 0:339b7abfa147 89 static uint16_t gu16Threshold[16]={THRESHOLD0,THRESHOLD1,THRESHOLD2,THRESHOLD3,THRESHOLD4,THRESHOLD5,
Osator 0:339b7abfa147 90 THRESHOLD6,THRESHOLD7,THRESHOLD8,THRESHOLD9,THRESHOLD10,THRESHOLD11,
Osator 0:339b7abfa147 91 THRESHOLD12,THRESHOLD13,THRESHOLD14,THRESHOLD15};
Osator 0:339b7abfa147 92 static uint16_t gu16Delta[16];
Osator 0:339b7abfa147 93 static uint8_t ongoing_elec;
Osator 0:339b7abfa147 94 static uint8_t end_flag = 1;
Osator 0:339b7abfa147 95
Osator 0:339b7abfa147 96 static uint8_t SliderPercentegePosition[2] = {NO_TOUCH,NO_TOUCH};
Osator 0:339b7abfa147 97 static uint8_t SliderDistancePosition[2] = {NO_TOUCH,NO_TOUCH};
Osator 0:339b7abfa147 98 static uint32_t AbsolutePercentegePosition = NO_TOUCH;
Osator 0:339b7abfa147 99 static uint32_t AbsoluteDistancePosition = NO_TOUCH;
Osator 0:339b7abfa147 100
Osator 0:339b7abfa147 101 static void tsi_irq();
Osator 0:339b7abfa147 102
Osator 0:339b7abfa147 103 TSISensor::TSISensor() {
Osator 0:339b7abfa147 104 SIM->SCGC5 |= SIM_SCGC5_PORTB_MASK;
Osator 0:339b7abfa147 105 SIM->SCGC5 |= SIM_SCGC5_TSI_MASK;
Osator 0:339b7abfa147 106
Osator 0:339b7abfa147 107 TSI0->GENCS |= (TSI_GENCS_ESOR_MASK
Osator 0:339b7abfa147 108 | TSI_GENCS_MODE(0)
Osator 0:339b7abfa147 109 | TSI_GENCS_REFCHRG(4)
Osator 0:339b7abfa147 110 | TSI_GENCS_DVOLT(0)
Osator 0:339b7abfa147 111 | TSI_GENCS_EXTCHRG(7)
Osator 0:339b7abfa147 112 | TSI_GENCS_PS(4)
Osator 0:339b7abfa147 113 | TSI_GENCS_NSCN(11)
Osator 0:339b7abfa147 114 | TSI_GENCS_TSIIEN_MASK
Osator 0:339b7abfa147 115 | TSI_GENCS_STPE_MASK
Osator 0:339b7abfa147 116 );
Osator 0:339b7abfa147 117
Osator 0:339b7abfa147 118 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK;
Osator 0:339b7abfa147 119
Osator 0:339b7abfa147 120 NVIC_SetVector(TSI0_IRQn, (uint32_t)&tsi_irq);
Osator 0:339b7abfa147 121 NVIC_EnableIRQ(TSI0_IRQn);
Osator 0:339b7abfa147 122
Osator 0:339b7abfa147 123 selfCalibration();
Osator 0:339b7abfa147 124 }
Osator 0:339b7abfa147 125
Osator 0:339b7abfa147 126 void TSISensor::TSISensor_reset(void) {
Osator 0:339b7abfa147 127 SIM->SCGC5 |= SIM_SCGC5_PORTB_MASK;
Osator 0:339b7abfa147 128 SIM->SCGC5 |= SIM_SCGC5_TSI_MASK;
Osator 0:339b7abfa147 129
Osator 0:339b7abfa147 130 TSI0->GENCS |= (TSI_GENCS_ESOR_MASK
Osator 0:339b7abfa147 131 | TSI_GENCS_MODE(0)
Osator 0:339b7abfa147 132 | TSI_GENCS_REFCHRG(4)
Osator 0:339b7abfa147 133 | TSI_GENCS_DVOLT(0)
Osator 0:339b7abfa147 134 | TSI_GENCS_EXTCHRG(7)
Osator 0:339b7abfa147 135 | TSI_GENCS_PS(4)
Osator 0:339b7abfa147 136 | TSI_GENCS_NSCN(11)
Osator 0:339b7abfa147 137 | TSI_GENCS_TSIIEN_MASK
Osator 0:339b7abfa147 138 | TSI_GENCS_STPE_MASK
Osator 0:339b7abfa147 139 );
Osator 0:339b7abfa147 140
Osator 0:339b7abfa147 141 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK;
Osator 0:339b7abfa147 142
Osator 0:339b7abfa147 143 //NVIC_SetVector(TSI0_IRQn, (uint32_t)&tsi_irq);
Osator 0:339b7abfa147 144 //NVIC_EnableIRQ(TSI0_IRQn);
Osator 0:339b7abfa147 145
Osator 0:339b7abfa147 146 selfCalibration();
Osator 0:339b7abfa147 147 }
Osator 0:339b7abfa147 148
Osator 0:339b7abfa147 149 void TSISensor::selfCalibration(void)
Osator 0:339b7abfa147 150 {
Osator 0:339b7abfa147 151 unsigned char cnt;
Osator 0:339b7abfa147 152 unsigned char trigger_backup;
Osator 0:339b7abfa147 153
Osator 0:339b7abfa147 154 TSI0->GENCS |= TSI_GENCS_EOSF_MASK; // Clear End of Scan Flag
Osator 0:339b7abfa147 155 TSI0->GENCS &= ~TSI_GENCS_TSIEN_MASK; // Disable TSI module
Osator 0:339b7abfa147 156
Osator 0:339b7abfa147 157 if(TSI0->GENCS & TSI_GENCS_STM_MASK) // Back-up TSI Trigger mode from Application
Osator 0:339b7abfa147 158 trigger_backup = 1;
Osator 0:339b7abfa147 159 else
Osator 0:339b7abfa147 160 trigger_backup = 0;
Osator 0:339b7abfa147 161
Osator 0:339b7abfa147 162 TSI0->GENCS &= ~TSI_GENCS_STM_MASK; // Use SW trigger
Osator 0:339b7abfa147 163 TSI0->GENCS &= ~TSI_GENCS_TSIIEN_MASK; // Enable TSI interrupts
Osator 0:339b7abfa147 164
Osator 0:339b7abfa147 165 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK; // Enable TSI module
Osator 0:339b7abfa147 166
Osator 0:339b7abfa147 167 for(cnt=0; cnt < total_electrode; cnt++) // Get Counts when Electrode not pressed
Osator 0:339b7abfa147 168 {
Osator 0:339b7abfa147 169 TSI0->DATA = ((elec_array[cnt] << TSI_DATA_TSICH_SHIFT) );
Osator 0:339b7abfa147 170 TSI0->DATA |= TSI_DATA_SWTS_MASK;
Osator 0:339b7abfa147 171 while(!(TSI0->GENCS & TSI_GENCS_EOSF_MASK));
Osator 0:339b7abfa147 172 TSI0->GENCS |= TSI_GENCS_EOSF_MASK;
Osator 0:339b7abfa147 173 gu16Baseline[cnt] = (TSI0->DATA & TSI_DATA_TSICNT_MASK);
Osator 0:339b7abfa147 174 }
Osator 0:339b7abfa147 175
Osator 0:339b7abfa147 176 TSI0->GENCS &= ~TSI_GENCS_TSIEN_MASK; // Disable TSI module
Osator 0:339b7abfa147 177 TSI0->GENCS |= TSI_GENCS_TSIIEN_MASK; // Enale TSI interrupt
Osator 0:339b7abfa147 178 if(trigger_backup) // Restore trigger mode
Osator 0:339b7abfa147 179 TSI0->GENCS |= TSI_GENCS_STM_MASK;
Osator 0:339b7abfa147 180 else
Osator 0:339b7abfa147 181 TSI0->GENCS &= ~TSI_GENCS_STM_MASK;
Osator 0:339b7abfa147 182
Osator 0:339b7abfa147 183 TSI0->GENCS |= TSI_GENCS_TSIEN_MASK; // Enable TSI module
Osator 0:339b7abfa147 184
Osator 0:339b7abfa147 185 TSI0->DATA = ((elec_array[0]<<TSI_DATA_TSICH_SHIFT) );
Osator 0:339b7abfa147 186 TSI0->DATA |= TSI_DATA_SWTS_MASK;
Osator 0:339b7abfa147 187 }
Osator 0:339b7abfa147 188
Osator 0:339b7abfa147 189 void TSISensor::sliderRead(void ) {
Osator 0:339b7abfa147 190 if(end_flag) {
Osator 0:339b7abfa147 191 end_flag = 0;
Osator 0:339b7abfa147 192 if((gu16Delta[0] > gu16Threshold[0])||(gu16Delta[1] > gu16Threshold[1])) {
Osator 0:339b7abfa147 193 SliderPercentegePosition[0] = (gu16Delta[0]*100)/(gu16Delta[0]+gu16Delta[1]);
Osator 0:339b7abfa147 194 SliderPercentegePosition[1] = (gu16Delta[1]*100)/(gu16Delta[0]+gu16Delta[1]);
Osator 0:339b7abfa147 195 SliderDistancePosition[0] = (SliderPercentegePosition[0]* SLIDER_LENGTH)/100;
Osator 0:339b7abfa147 196 SliderDistancePosition[1] = (SliderPercentegePosition[1]* SLIDER_LENGTH)/100;
Osator 0:339b7abfa147 197 AbsolutePercentegePosition = ((100 - SliderPercentegePosition[0]) + SliderPercentegePosition[1])/2;
Osator 0:339b7abfa147 198 AbsoluteDistancePosition = ((SLIDER_LENGTH - SliderDistancePosition[0]) + SliderDistancePosition[1])/2;
Osator 0:339b7abfa147 199 } else {
Osator 0:339b7abfa147 200 SliderPercentegePosition[0] = NO_TOUCH;
Osator 0:339b7abfa147 201 SliderPercentegePosition[1] = NO_TOUCH;
Osator 0:339b7abfa147 202 SliderDistancePosition[0] = NO_TOUCH;
Osator 0:339b7abfa147 203 SliderDistancePosition[1] = NO_TOUCH;
Osator 0:339b7abfa147 204 AbsolutePercentegePosition = NO_TOUCH;
Osator 0:339b7abfa147 205 AbsoluteDistancePosition = NO_TOUCH;
Osator 0:339b7abfa147 206 }
Osator 0:339b7abfa147 207 }
Osator 0:339b7abfa147 208 }
Osator 0:339b7abfa147 209
Osator 0:339b7abfa147 210 float TSISensor::readPercentage() {
Osator 0:339b7abfa147 211 sliderRead();
Osator 0:339b7abfa147 212 return (float)AbsolutePercentegePosition/100.0;
Osator 0:339b7abfa147 213 }
Osator 0:339b7abfa147 214
Osator 0:339b7abfa147 215 uint8_t TSISensor::readDistance() {
Osator 0:339b7abfa147 216 sliderRead();
Osator 0:339b7abfa147 217 return AbsoluteDistancePosition;
Osator 0:339b7abfa147 218 }
Osator 0:339b7abfa147 219
Osator 0:339b7abfa147 220 uint16_t TSISensor::readValue(uint8_t index)
Osator 0:339b7abfa147 221 {
Osator 0:339b7abfa147 222 return gu16TSICount[index];
Osator 0:339b7abfa147 223 }
Osator 0:339b7abfa147 224
Osator 0:339b7abfa147 225 static void changeElectrode(void)
Osator 0:339b7abfa147 226 {
Osator 0:339b7abfa147 227 int16_t u16temp_delta;
Osator 0:339b7abfa147 228
Osator 0:339b7abfa147 229 gu16TSICount[ongoing_elec] = (TSI0->DATA & TSI_DATA_TSICNT_MASK); // Save Counts for current electrode
Osator 0:339b7abfa147 230 u16temp_delta = gu16TSICount[ongoing_elec] - gu16Baseline[ongoing_elec]; // Obtains Counts Delta from callibration reference
Osator 0:339b7abfa147 231 if(u16temp_delta < 0)
Osator 0:339b7abfa147 232 gu16Delta[ongoing_elec] = 0;
Osator 0:339b7abfa147 233 else
Osator 0:339b7abfa147 234 gu16Delta[ongoing_elec] = u16temp_delta;
Osator 0:339b7abfa147 235
Osator 0:339b7abfa147 236 //Change Electrode to Scan
Osator 0:339b7abfa147 237 if(total_electrode > 1)
Osator 0:339b7abfa147 238 {
Osator 0:339b7abfa147 239 if((total_electrode-1) > ongoing_elec)
Osator 0:339b7abfa147 240 ongoing_elec++;
Osator 0:339b7abfa147 241 else
Osator 0:339b7abfa147 242 ongoing_elec = 0;
Osator 0:339b7abfa147 243
Osator 0:339b7abfa147 244 TSI0->DATA = ((elec_array[ongoing_elec]<<TSI_DATA_TSICH_SHIFT) );
Osator 0:339b7abfa147 245 TSI0->DATA |= TSI_DATA_SWTS_MASK;
Osator 0:339b7abfa147 246 }
Osator 0:339b7abfa147 247 }
Osator 0:339b7abfa147 248
Osator 0:339b7abfa147 249 void tsi_irq(void)
Osator 0:339b7abfa147 250 {
Osator 0:339b7abfa147 251 end_flag = 1;
Osator 0:339b7abfa147 252 TSI0->GENCS |= TSI_GENCS_EOSF_MASK; // Clear End of Scan Flag
Osator 0:339b7abfa147 253 changeElectrode();
Osator 0:339b7abfa147 254 }