Hendrik Lipka
touch screen handler for the microchip AR1020
ar1020.cpp@1:264ad2a00fd9, 2011-02-22 (annotated)
- Committer:
- hlipka
- Date:
- Tue Feb 22 21:43:39 2011 +0000
- Revision:
- 1:264ad2a00fd9
- Parent:
- 0:cf4dd04052e3
- Child:
- 2:1a436d154c84
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| hlipka | 0:cf4dd04052e3 | 1 | /* |
| hlipka | 0:cf4dd04052e3 | 2 | * mbed AR1020 library |
| hlipka | 0:cf4dd04052e3 | 3 | * Copyright (c) 2010 Hendrik Lipka |
| hlipka | 0:cf4dd04052e3 | 4 | * |
| hlipka | 0:cf4dd04052e3 | 5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| hlipka | 0:cf4dd04052e3 | 6 | * of this software and associated documentation files (the "Software"), to deal |
| hlipka | 0:cf4dd04052e3 | 7 | * in the Software without restriction, including without limitation the rights |
| hlipka | 0:cf4dd04052e3 | 8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| hlipka | 0:cf4dd04052e3 | 9 | * copies of the Software, and to permit persons to whom the Software is |
| hlipka | 0:cf4dd04052e3 | 10 | * furnished to do so, subject to the following conditions: |
| hlipka | 0:cf4dd04052e3 | 11 | * |
| hlipka | 0:cf4dd04052e3 | 12 | * The above copyright notice and this permission notice shall be included in |
| hlipka | 0:cf4dd04052e3 | 13 | * all copies or substantial portions of the Software. |
| hlipka | 0:cf4dd04052e3 | 14 | * |
| hlipka | 0:cf4dd04052e3 | 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| hlipka | 0:cf4dd04052e3 | 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| hlipka | 0:cf4dd04052e3 | 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| hlipka | 0:cf4dd04052e3 | 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| hlipka | 0:cf4dd04052e3 | 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| hlipka | 0:cf4dd04052e3 | 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| hlipka | 0:cf4dd04052e3 | 21 | * THE SOFTWARE. |
| hlipka | 0:cf4dd04052e3 | 22 | */ |
| hlipka | 0:cf4dd04052e3 | 23 | |
| hlipka | 0:cf4dd04052e3 | 24 | #include "ar1020.h" |
| hlipka | 0:cf4dd04052e3 | 25 | #include "wait_api.h" |
| hlipka | 0:cf4dd04052e3 | 26 | |
| hlipka | 1:264ad2a00fd9 | 27 | AR1020::AR1020(SPI *spi, PinName enable, PinName sqi, PinName power, bool swapX, bool swapY, bool swapXY) |
| hlipka | 0:cf4dd04052e3 | 28 | { |
| hlipka | 0:cf4dd04052e3 | 29 | _spi=spi; |
| hlipka | 0:cf4dd04052e3 | 30 | _enable=new DigitalOut(enable); |
| hlipka | 0:cf4dd04052e3 | 31 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 32 | _irq=new InterruptIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 33 | _x=-1; |
| hlipka | 0:cf4dd04052e3 | 34 | _y=-1; |
| hlipka | 0:cf4dd04052e3 | 35 | _pen=0; |
| hlipka | 0:cf4dd04052e3 | 36 | _oldPen=false; |
| hlipka | 0:cf4dd04052e3 | 37 | _led=new DigitalOut(LED1); |
| hlipka | 1:264ad2a00fd9 | 38 | _power=new DigitalOut(power); |
| hlipka | 1:264ad2a00fd9 | 39 | _power->write(0); |
| hlipka | 0:cf4dd04052e3 | 40 | } |
| hlipka | 0:cf4dd04052e3 | 41 | |
| hlipka | 1:264ad2a00fd9 | 42 | AR1020::AR1020(PinName mosi, PinName miso, PinName clk, PinName enable, PinName sqi, PinName power, bool swapX, bool swapY, bool swapXY) |
| hlipka | 0:cf4dd04052e3 | 43 | { |
| hlipka | 0:cf4dd04052e3 | 44 | _mosi=new DigitalOut(mosi); |
| hlipka | 0:cf4dd04052e3 | 45 | _miso=new DigitalIn(miso); |
| hlipka | 0:cf4dd04052e3 | 46 | _clk=new DigitalOut(clk); |
| hlipka | 0:cf4dd04052e3 | 47 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 48 | |
| hlipka | 0:cf4dd04052e3 | 49 | _enable=new DigitalOut(enable); |
| hlipka | 0:cf4dd04052e3 | 50 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 51 | _irq=new InterruptIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 52 | _sqi=new DigitalIn(sqi); |
| hlipka | 0:cf4dd04052e3 | 53 | _x=-1; |
| hlipka | 0:cf4dd04052e3 | 54 | _y=-1; |
| hlipka | 0:cf4dd04052e3 | 55 | _pen=0; |
| hlipka | 0:cf4dd04052e3 | 56 | _oldPen=false; |
| hlipka | 0:cf4dd04052e3 | 57 | _led=new DigitalOut(LED1); |
| hlipka | 1:264ad2a00fd9 | 58 | _power=new DigitalOut(power); |
| hlipka | 1:264ad2a00fd9 | 59 | _power->write(0); |
| hlipka | 0:cf4dd04052e3 | 60 | } |
| hlipka | 0:cf4dd04052e3 | 61 | |
| hlipka | 0:cf4dd04052e3 | 62 | AR1020::~AR1020() |
| hlipka | 0:cf4dd04052e3 | 63 | { |
| hlipka | 0:cf4dd04052e3 | 64 | delete _enable; |
| hlipka | 0:cf4dd04052e3 | 65 | delete _irq; |
| hlipka | 0:cf4dd04052e3 | 66 | } |
| hlipka | 0:cf4dd04052e3 | 67 | |
| hlipka | 0:cf4dd04052e3 | 68 | void AR1020::init() |
| hlipka | 0:cf4dd04052e3 | 69 | { |
| hlipka | 1:264ad2a00fd9 | 70 | _power->write(1); |
| hlipka | 1:264ad2a00fd9 | 71 | wait_ms(100); |
| hlipka | 0:cf4dd04052e3 | 72 | int r=cmd(0x13,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 73 | printf("disable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 74 | |
| hlipka | 0:cf4dd04052e3 | 75 | int regStart=cmd(0x22,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 76 | printf("reg offset=%i\n",regStart); |
| hlipka | 0:cf4dd04052e3 | 77 | |
| hlipka | 0:cf4dd04052e3 | 78 | if (regStart<0) |
| hlipka | 0:cf4dd04052e3 | 79 | return; |
| hlipka | 0:cf4dd04052e3 | 80 | |
| hlipka | 0:cf4dd04052e3 | 81 | char cid2[4]={0x00,0x0d+regStart,0x01,0x01}; |
| hlipka | 0:cf4dd04052e3 | 82 | r=cmd(0x21,cid2,4); |
| hlipka | 0:cf4dd04052e3 | 83 | printf("set mode=1 => %i\n",r); |
| hlipka | 0:cf4dd04052e3 | 84 | |
| hlipka | 0:cf4dd04052e3 | 85 | |
| hlipka | 0:cf4dd04052e3 | 86 | r=cmd(0x12,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 87 | printf("enable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 88 | _irq->rise(this, &AR1020::read); |
| hlipka | 0:cf4dd04052e3 | 89 | } |
| hlipka | 0:cf4dd04052e3 | 90 | |
| hlipka | 0:cf4dd04052e3 | 91 | int AR1020::x() |
| hlipka | 0:cf4dd04052e3 | 92 | { |
| hlipka | 0:cf4dd04052e3 | 93 | return _x; |
| hlipka | 0:cf4dd04052e3 | 94 | } |
| hlipka | 0:cf4dd04052e3 | 95 | |
| hlipka | 0:cf4dd04052e3 | 96 | int AR1020::y() |
| hlipka | 0:cf4dd04052e3 | 97 | { |
| hlipka | 0:cf4dd04052e3 | 98 | return _y; |
| hlipka | 0:cf4dd04052e3 | 99 | } |
| hlipka | 0:cf4dd04052e3 | 100 | |
| hlipka | 0:cf4dd04052e3 | 101 | int AR1020::pen() |
| hlipka | 0:cf4dd04052e3 | 102 | { |
| hlipka | 0:cf4dd04052e3 | 103 | return _pen; |
| hlipka | 0:cf4dd04052e3 | 104 | } |
| hlipka | 0:cf4dd04052e3 | 105 | |
| hlipka | 0:cf4dd04052e3 | 106 | |
| hlipka | 0:cf4dd04052e3 | 107 | void AR1020::read() |
| hlipka | 0:cf4dd04052e3 | 108 | { |
| hlipka | 0:cf4dd04052e3 | 109 | _led->write(1); |
| hlipka | 0:cf4dd04052e3 | 110 | _enable->write(0); |
| hlipka | 0:cf4dd04052e3 | 111 | wait_us(60); |
| hlipka | 0:cf4dd04052e3 | 112 | |
| hlipka | 0:cf4dd04052e3 | 113 | int pen=readByte(); |
| hlipka | 0:cf4dd04052e3 | 114 | wait_us(60); |
| hlipka | 0:cf4dd04052e3 | 115 | |
| hlipka | 0:cf4dd04052e3 | 116 | int xlo=readByte(); |
| hlipka | 0:cf4dd04052e3 | 117 | wait_us(60); |
| hlipka | 0:cf4dd04052e3 | 118 | |
| hlipka | 0:cf4dd04052e3 | 119 | int xhi=readByte(); |
| hlipka | 0:cf4dd04052e3 | 120 | wait_us(60); |
| hlipka | 0:cf4dd04052e3 | 121 | |
| hlipka | 0:cf4dd04052e3 | 122 | int ylo=readByte(); |
| hlipka | 0:cf4dd04052e3 | 123 | wait_us(60); |
| hlipka | 0:cf4dd04052e3 | 124 | |
| hlipka | 0:cf4dd04052e3 | 125 | int yhi=readByte(); |
| hlipka | 0:cf4dd04052e3 | 126 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 127 | |
| hlipka | 0:cf4dd04052e3 | 128 | // printf("0x%x|0x%x|0x%x|0x%x|0x%x\n", pen,xlo,xhi,ylo,yhi); |
| hlipka | 0:cf4dd04052e3 | 129 | if (0x4d==pen || 0==pen || 255==pen) |
| hlipka | 0:cf4dd04052e3 | 130 | { |
| hlipka | 0:cf4dd04052e3 | 131 | // ignore invalid stuff, do nothing... |
| hlipka | 0:cf4dd04052e3 | 132 | } |
| hlipka | 0:cf4dd04052e3 | 133 | else if (0x81!=pen&0x81) // pen set? |
| hlipka | 0:cf4dd04052e3 | 134 | { |
| hlipka | 0:cf4dd04052e3 | 135 | _pen=0; |
| hlipka | 0:cf4dd04052e3 | 136 | int x=xlo+(xhi<<7); |
| hlipka | 0:cf4dd04052e3 | 137 | int y=ylo+(yhi<<7); |
| hlipka | 0:cf4dd04052e3 | 138 | if (0!=x&&0!=y) |
| hlipka | 0:cf4dd04052e3 | 139 | { |
| hlipka | 0:cf4dd04052e3 | 140 | _x=x; |
| hlipka | 0:cf4dd04052e3 | 141 | _y=y; |
| hlipka | 0:cf4dd04052e3 | 142 | } |
| hlipka | 0:cf4dd04052e3 | 143 | } |
| hlipka | 0:cf4dd04052e3 | 144 | else |
| hlipka | 0:cf4dd04052e3 | 145 | { |
| hlipka | 0:cf4dd04052e3 | 146 | _pen=1; |
| hlipka | 0:cf4dd04052e3 | 147 | int x=xlo+(xhi<<7); |
| hlipka | 0:cf4dd04052e3 | 148 | int y=ylo+(yhi<<7); |
| hlipka | 0:cf4dd04052e3 | 149 | if (0!=x&&0!=y) |
| hlipka | 0:cf4dd04052e3 | 150 | { |
| hlipka | 0:cf4dd04052e3 | 151 | _x=x; |
| hlipka | 0:cf4dd04052e3 | 152 | _y=y; |
| hlipka | 0:cf4dd04052e3 | 153 | } |
| hlipka | 0:cf4dd04052e3 | 154 | } |
| hlipka | 0:cf4dd04052e3 | 155 | _event.x=_x; |
| hlipka | 0:cf4dd04052e3 | 156 | _event.y=_y; |
| hlipka | 0:cf4dd04052e3 | 157 | _event.pen=_pen; |
| hlipka | 0:cf4dd04052e3 | 158 | if (_pen==1 && _oldPen==false) |
| hlipka | 0:cf4dd04052e3 | 159 | { // pen down |
| hlipka | 0:cf4dd04052e3 | 160 | _callbackPD.call((uint32_t)&_event); |
| hlipka | 0:cf4dd04052e3 | 161 | } |
| hlipka | 0:cf4dd04052e3 | 162 | else if (_pen==1 && _oldPen==true) |
| hlipka | 0:cf4dd04052e3 | 163 | { // pen moved |
| hlipka | 0:cf4dd04052e3 | 164 | _callbackPM.call((uint32_t)&_event); |
| hlipka | 0:cf4dd04052e3 | 165 | } |
| hlipka | 0:cf4dd04052e3 | 166 | else if (_pen==0 && _oldPen==true) |
| hlipka | 0:cf4dd04052e3 | 167 | { // pen up |
| hlipka | 0:cf4dd04052e3 | 168 | _callbackPU.call((uint32_t)&_event); |
| hlipka | 0:cf4dd04052e3 | 169 | } |
| hlipka | 0:cf4dd04052e3 | 170 | else |
| hlipka | 0:cf4dd04052e3 | 171 | { |
| hlipka | 0:cf4dd04052e3 | 172 | // happens on the first touch (the first report is send with pen=0). |
| hlipka | 0:cf4dd04052e3 | 173 | } |
| hlipka | 0:cf4dd04052e3 | 174 | _oldPen=(_pen==1); |
| hlipka | 0:cf4dd04052e3 | 175 | _led->write(0); |
| hlipka | 0:cf4dd04052e3 | 176 | } |
| hlipka | 0:cf4dd04052e3 | 177 | |
| hlipka | 0:cf4dd04052e3 | 178 | int AR1020::cmd(char cmd,char* data, int len) |
| hlipka | 0:cf4dd04052e3 | 179 | { |
| hlipka | 0:cf4dd04052e3 | 180 | _enable->write(1); |
| hlipka | 1:264ad2a00fd9 | 181 | wait_us(1000); |
| hlipka | 0:cf4dd04052e3 | 182 | _enable->write(0); |
| hlipka | 0:cf4dd04052e3 | 183 | |
| hlipka | 0:cf4dd04052e3 | 184 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 185 | |
| hlipka | 0:cf4dd04052e3 | 186 | writeByte(0x55); |
| hlipka | 0:cf4dd04052e3 | 187 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 188 | |
| hlipka | 0:cf4dd04052e3 | 189 | writeByte(len+1); |
| hlipka | 0:cf4dd04052e3 | 190 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 191 | |
| hlipka | 0:cf4dd04052e3 | 192 | writeByte(cmd); |
| hlipka | 0:cf4dd04052e3 | 193 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 194 | |
| hlipka | 0:cf4dd04052e3 | 195 | for (int i=0;i<len;i++) |
| hlipka | 0:cf4dd04052e3 | 196 | { |
| hlipka | 0:cf4dd04052e3 | 197 | writeByte(data[i]); |
| hlipka | 0:cf4dd04052e3 | 198 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 199 | } |
| hlipka | 0:cf4dd04052e3 | 200 | Timer t; |
| hlipka | 0:cf4dd04052e3 | 201 | t.start(); |
| hlipka | 0:cf4dd04052e3 | 202 | while (true) |
| hlipka | 0:cf4dd04052e3 | 203 | { |
| hlipka | 0:cf4dd04052e3 | 204 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 205 | if (1==_sqi->read()) |
| hlipka | 0:cf4dd04052e3 | 206 | break; |
| hlipka | 0:cf4dd04052e3 | 207 | if (t.read_ms()>1) |
| hlipka | 0:cf4dd04052e3 | 208 | break; |
| hlipka | 0:cf4dd04052e3 | 209 | } |
| hlipka | 0:cf4dd04052e3 | 210 | char rhead=readByte(); |
| hlipka | 0:cf4dd04052e3 | 211 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 212 | if (rhead!=0x55) |
| hlipka | 0:cf4dd04052e3 | 213 | { |
| hlipka | 0:cf4dd04052e3 | 214 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 215 | printf("rh=0x%x\n",rhead); |
| hlipka | 0:cf4dd04052e3 | 216 | return -1000; |
| hlipka | 0:cf4dd04052e3 | 217 | } |
| hlipka | 0:cf4dd04052e3 | 218 | char rlen=readByte(); |
| hlipka | 0:cf4dd04052e3 | 219 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 220 | if (rlen==2) |
| hlipka | 0:cf4dd04052e3 | 221 | { |
| hlipka | 0:cf4dd04052e3 | 222 | char r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 223 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 224 | char rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 225 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 226 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 227 | if (rc!=cmd) |
| hlipka | 0:cf4dd04052e3 | 228 | return -2000; |
| hlipka | 0:cf4dd04052e3 | 229 | return -r; |
| hlipka | 0:cf4dd04052e3 | 230 | } |
| hlipka | 0:cf4dd04052e3 | 231 | else if (rlen==3) |
| hlipka | 0:cf4dd04052e3 | 232 | { |
| hlipka | 0:cf4dd04052e3 | 233 | char r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 234 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 235 | char rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 236 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 237 | if (rc!=cmd) |
| hlipka | 0:cf4dd04052e3 | 238 | { |
| hlipka | 0:cf4dd04052e3 | 239 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 240 | return -3000; |
| hlipka | 0:cf4dd04052e3 | 241 | } |
| hlipka | 0:cf4dd04052e3 | 242 | char rd=readByte(); |
| hlipka | 0:cf4dd04052e3 | 243 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 244 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 245 | if (r==0) |
| hlipka | 0:cf4dd04052e3 | 246 | return rd; |
| hlipka | 0:cf4dd04052e3 | 247 | return -r; |
| hlipka | 0:cf4dd04052e3 | 248 | } |
| hlipka | 0:cf4dd04052e3 | 249 | else |
| hlipka | 0:cf4dd04052e3 | 250 | { |
| hlipka | 0:cf4dd04052e3 | 251 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 252 | return -4000; |
| hlipka | 0:cf4dd04052e3 | 253 | } |
| hlipka | 0:cf4dd04052e3 | 254 | } |
| hlipka | 0:cf4dd04052e3 | 255 | void AR1020::calibrate() |
| hlipka | 0:cf4dd04052e3 | 256 | { |
| hlipka | 0:cf4dd04052e3 | 257 | _irq->rise(NULL); |
| hlipka | 0:cf4dd04052e3 | 258 | |
| hlipka | 0:cf4dd04052e3 | 259 | DigitalOut led1(LED1); |
| hlipka | 0:cf4dd04052e3 | 260 | DigitalOut led2(LED2); |
| hlipka | 0:cf4dd04052e3 | 261 | DigitalOut led3(LED3); |
| hlipka | 0:cf4dd04052e3 | 262 | DigitalOut led4(LED4); |
| hlipka | 0:cf4dd04052e3 | 263 | led1=0;led2=0;led3=1;led4=1; |
| hlipka | 0:cf4dd04052e3 | 264 | |
| hlipka | 0:cf4dd04052e3 | 265 | int r=cmd(0x13,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 266 | printf("disable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 267 | wait_ms(100); |
| hlipka | 0:cf4dd04052e3 | 268 | if (r<0) |
| hlipka | 0:cf4dd04052e3 | 269 | return; |
| hlipka | 0:cf4dd04052e3 | 270 | led4=0; |
| hlipka | 0:cf4dd04052e3 | 271 | |
| hlipka | 0:cf4dd04052e3 | 272 | int regStart=cmd(0x22,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 273 | printf("reg offset=%i\n",regStart); |
| hlipka | 0:cf4dd04052e3 | 274 | |
| hlipka | 0:cf4dd04052e3 | 275 | char cid[3]={0x00,0x0d+regStart,0x01}; |
| hlipka | 0:cf4dd04052e3 | 276 | int mode=cmd(0x20,cid,3); |
| hlipka | 0:cf4dd04052e3 | 277 | printf("mode=%i\n",mode); |
| hlipka | 0:cf4dd04052e3 | 278 | |
| hlipka | 0:cf4dd04052e3 | 279 | if (regStart<0) |
| hlipka | 0:cf4dd04052e3 | 280 | return; |
| hlipka | 0:cf4dd04052e3 | 281 | printf("start calibrate\n"); |
| hlipka | 0:cf4dd04052e3 | 282 | led3=0; |
| hlipka | 0:cf4dd04052e3 | 283 | char cid2[4]={0x00,0x0e+regStart,0x01,0x19}; |
| hlipka | 0:cf4dd04052e3 | 284 | r=cmd(0x21,cid2,4); |
| hlipka | 0:cf4dd04052e3 | 285 | printf("set inset=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 286 | if (r<0) |
| hlipka | 0:cf4dd04052e3 | 287 | return; |
| hlipka | 0:cf4dd04052e3 | 288 | |
| hlipka | 0:cf4dd04052e3 | 289 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 290 | _enable->write(0); |
| hlipka | 0:cf4dd04052e3 | 291 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 292 | writeByte(0x55); |
| hlipka | 0:cf4dd04052e3 | 293 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 294 | writeByte(0x02); |
| hlipka | 0:cf4dd04052e3 | 295 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 296 | writeByte(0x14); |
| hlipka | 0:cf4dd04052e3 | 297 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 298 | writeByte(0x04); |
| hlipka | 0:cf4dd04052e3 | 299 | |
| hlipka | 0:cf4dd04052e3 | 300 | wait_ms(10); |
| hlipka | 0:cf4dd04052e3 | 301 | |
| hlipka | 0:cf4dd04052e3 | 302 | int resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 303 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 304 | printf("start OK, press upper left"); |
| hlipka | 0:cf4dd04052e3 | 305 | led1=1; |
| hlipka | 0:cf4dd04052e3 | 306 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 307 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 308 | printf("press upper right"); |
| hlipka | 0:cf4dd04052e3 | 309 | led2=1; |
| hlipka | 0:cf4dd04052e3 | 310 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 311 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 312 | printf("press lower right"); |
| hlipka | 0:cf4dd04052e3 | 313 | led3=1; |
| hlipka | 0:cf4dd04052e3 | 314 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 315 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 316 | printf("press lower left"); |
| hlipka | 0:cf4dd04052e3 | 317 | led4=1; |
| hlipka | 0:cf4dd04052e3 | 318 | resp=readCalibResponse(); |
| hlipka | 0:cf4dd04052e3 | 319 | printf("status=%i\n",resp); |
| hlipka | 0:cf4dd04052e3 | 320 | |
| hlipka | 0:cf4dd04052e3 | 321 | _enable->write(1); |
| hlipka | 0:cf4dd04052e3 | 322 | |
| hlipka | 0:cf4dd04052e3 | 323 | r=cmd(0x12,NULL,0); |
| hlipka | 0:cf4dd04052e3 | 324 | printf("enable touch=%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 325 | |
| hlipka | 0:cf4dd04052e3 | 326 | _irq->rise(this, &AR1020::read); |
| hlipka | 0:cf4dd04052e3 | 327 | |
| hlipka | 0:cf4dd04052e3 | 328 | } |
| hlipka | 0:cf4dd04052e3 | 329 | |
| hlipka | 0:cf4dd04052e3 | 330 | int AR1020::readCalibResponse() |
| hlipka | 0:cf4dd04052e3 | 331 | { |
| hlipka | 0:cf4dd04052e3 | 332 | while (true) |
| hlipka | 0:cf4dd04052e3 | 333 | { |
| hlipka | 0:cf4dd04052e3 | 334 | int r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 335 | if (r!=0x55) |
| hlipka | 0:cf4dd04052e3 | 336 | { |
| hlipka | 0:cf4dd04052e3 | 337 | printf("1=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 338 | wait_ms(100); |
| hlipka | 0:cf4dd04052e3 | 339 | continue; |
| hlipka | 0:cf4dd04052e3 | 340 | } |
| hlipka | 0:cf4dd04052e3 | 341 | |
| hlipka | 0:cf4dd04052e3 | 342 | r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 343 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 344 | if (r!=0x02) |
| hlipka | 0:cf4dd04052e3 | 345 | { |
| hlipka | 0:cf4dd04052e3 | 346 | printf("2=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 347 | continue; |
| hlipka | 0:cf4dd04052e3 | 348 | } |
| hlipka | 0:cf4dd04052e3 | 349 | |
| hlipka | 0:cf4dd04052e3 | 350 | r=readByte(); |
| hlipka | 0:cf4dd04052e3 | 351 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 352 | if (r!=0x00) |
| hlipka | 0:cf4dd04052e3 | 353 | { |
| hlipka | 0:cf4dd04052e3 | 354 | printf("3=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 355 | continue; |
| hlipka | 0:cf4dd04052e3 | 356 | } |
| hlipka | 0:cf4dd04052e3 | 357 | int rc=readByte(); |
| hlipka | 0:cf4dd04052e3 | 358 | wait_us(100); |
| hlipka | 0:cf4dd04052e3 | 359 | if (rc!=0x14) |
| hlipka | 0:cf4dd04052e3 | 360 | { |
| hlipka | 0:cf4dd04052e3 | 361 | printf("4=0x%x\n",r); |
| hlipka | 0:cf4dd04052e3 | 362 | continue; |
| hlipka | 0:cf4dd04052e3 | 363 | } |
| hlipka | 0:cf4dd04052e3 | 364 | |
| hlipka | 0:cf4dd04052e3 | 365 | return r; |
| hlipka | 0:cf4dd04052e3 | 366 | } |
| hlipka | 0:cf4dd04052e3 | 367 | } |
| hlipka | 0:cf4dd04052e3 | 368 | |
| hlipka | 0:cf4dd04052e3 | 369 | int AR1020::readByte() |
| hlipka | 0:cf4dd04052e3 | 370 | { |
| hlipka | 0:cf4dd04052e3 | 371 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 372 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 373 | int r=0; |
| hlipka | 0:cf4dd04052e3 | 374 | for (int i=0;i<8;i++) |
| hlipka | 0:cf4dd04052e3 | 375 | { |
| hlipka | 0:cf4dd04052e3 | 376 | r=r<<1; |
| hlipka | 0:cf4dd04052e3 | 377 | _clk->write(1); |
| hlipka | 0:cf4dd04052e3 | 378 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 379 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 380 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 381 | int bit=_miso->read(); |
| hlipka | 0:cf4dd04052e3 | 382 | r+=bit; |
| hlipka | 0:cf4dd04052e3 | 383 | } |
| hlipka | 0:cf4dd04052e3 | 384 | // printf("<-%i\n",r); |
| hlipka | 0:cf4dd04052e3 | 385 | return r; |
| hlipka | 0:cf4dd04052e3 | 386 | } |
| hlipka | 0:cf4dd04052e3 | 387 | |
| hlipka | 0:cf4dd04052e3 | 388 | void AR1020::writeByte(char byte) |
| hlipka | 0:cf4dd04052e3 | 389 | { |
| hlipka | 0:cf4dd04052e3 | 390 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 391 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 392 | // printf("->0x%x\n",byte); |
| hlipka | 0:cf4dd04052e3 | 393 | for (int i=0;i<8;i++) |
| hlipka | 0:cf4dd04052e3 | 394 | { |
| hlipka | 0:cf4dd04052e3 | 395 | int bit=byte>127; |
| hlipka | 0:cf4dd04052e3 | 396 | // printf("%i",bit); |
| hlipka | 0:cf4dd04052e3 | 397 | _clk->write(1); |
| hlipka | 0:cf4dd04052e3 | 398 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 399 | _mosi->write(bit); |
| hlipka | 0:cf4dd04052e3 | 400 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 401 | _clk->write(0); |
| hlipka | 0:cf4dd04052e3 | 402 | wait_us(10); |
| hlipka | 0:cf4dd04052e3 | 403 | byte=(char)(byte<<1); |
| hlipka | 0:cf4dd04052e3 | 404 | |
| hlipka | 0:cf4dd04052e3 | 405 | } |
| hlipka | 0:cf4dd04052e3 | 406 | // printf("\n"); |
| hlipka | 0:cf4dd04052e3 | 407 | } |
AR1020