MPR121 demo code for 12 key Sparkfun touch keypad - sends key number to LEDs. Based on Sparkfun MPR121 code ported to mbed by Anthony Buckton
Fork of MPR121_Demo by
Revision 1:b77d4eaa81d1, committed 2016-03-17
- Comitter:
- hcha30
- Date:
- Thu Mar 17 16:57:27 2016 +0000
- Parent:
- 0:e09703934ff4
- Commit message:
- 4180 lab4 big fish game
Changed in this revision
main.cpp | Show diff for this revision Revisions of this file |
diff -r e09703934ff4 -r b77d4eaa81d1 main.cpp --- a/main.cpp Wed Mar 16 01:49:13 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,125 +0,0 @@ -/* -Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au) - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. -*/ - -#include <mbed.h> -#include <string> -#include <list> - -#include <mpr121.h> - -DigitalOut led1(LED1); -DigitalOut led2(LED2); -DigitalOut led3(LED3); -DigitalOut led4(LED4); - -// Create the interrupt receiver object on pin 26 -InterruptIn interrupt(p26); - -// Setup the Serial to the PC for debugging -Serial pc(USBTX, USBRX); - -// Setup the i2c bus on pins 28 and 27 -I2C i2c(p9, p10); - -// Setup the Mpr121: -// constructor(i2c object, i2c address of the mpr121) -Mpr121 mpr121(&i2c, Mpr121::ADD_VSS); - -void fallInterrupt() { - int key_code=0; - int i=0; - int value=mpr121.read(0x00); - value +=mpr121.read(0x01)<<8; - // LED demo mod by J. Hamblen - //pc.printf("MPR value: %x \r\n", value); - i=0; - // puts key number out to LEDs for demo - for (i=0; i<12; i++) { - if (((value>>i)&0x01)==1) key_code=i+1; - } - led4=key_code & 0x01; - led3=(key_code>>1) & 0x01; - led2=(key_code>>2) & 0x01; - led1=(key_code>>3) & 0x01; -} -int main() { - - pc.printf("\nHello from the mbed & mpr121\n\r"); - - unsigned char dataArray[2]; - int key; - int count = 0; - - pc.printf("Test 1: read a value: \r\n"); - dataArray[0] = mpr121.read(AFE_CFG); - pc.printf("Read value=%x\r\n\n",dataArray[0]); - - pc.printf("Test 2: read a value: \r\n"); - dataArray[0] = mpr121.read(0x5d); - pc.printf("Read value=%x\r\n\n",dataArray[0]); - - pc.printf("Test 3: write & read a value: \r\n"); - mpr121.read(ELE0_T); - mpr121.write(ELE0_T,0x22); - dataArray[0] = mpr121.read(ELE0_T); - pc.printf("Read value=%x\r\n\n",dataArray[0]); - - pc.printf("Test 4: Write many values: \r\n"); - unsigned char data[] = {0x1,0x3,0x5,0x9,0x15,0x25,0x41}; - mpr121.writeMany(0x42,data,7); - - // Now read them back .. - key = 0x42; - count = 0; - while (count < 7) { - char result = mpr121.read(key); - key++; - count++; - pc.printf("Read value: '%x'=%x\n\r",key,result); - } - - pc.printf("Test 5: Read Electrodes:\r\n"); - key = ELE0_T; - count = 0; - while (count < 24) { - char result = mpr121.read(key); - pc.printf("Read key:%x value:%x\n\r",key,result); - key++; - count++; - } - pc.printf("--------- \r\n\n"); - - // mpr121.setProximityMode(true); - - pc.printf("ELE_CFG=%x", mpr121.read(ELE_CFG)); - - interrupt.fall(&fallInterrupt); - interrupt.mode(PullUp); - - while (1) { - wait(5); - pc.printf("."); - } -} - - -