Sam Leighton / Prox

APDS-9130 library

Prox.cpp@2:9db88ca586db, 2016-03-04 (annotated)

Committer:
sleighton
Date:
Fri Mar 04 18:46:17 2016 +0000
Revision:
2:9db88ca586db
Parent:
1:159407640167 
Before Tidy up

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sleighton 0:10fe9a5a884f 1 #include "Prox.h"
sleighton 0:10fe9a5a884f 2
sleighton 0:10fe9a5a884f 3 Prox::Prox(PinName sda, PinName scl) {
sleighton 0:10fe9a5a884f 4 _sda = sda;
sleighton 0:10fe9a5a884f 5 _scl = scl;
sleighton 0:10fe9a5a884f 6
sleighton 2:9db88ca586db 7 WriteByte(0x72,0xE7); // Clear interrupt
sleighton 0:10fe9a5a884f 8
sleighton 0:10fe9a5a884f 9 char PTIME;
sleighton 0:10fe9a5a884f 10 char WTIME;
sleighton 0:10fe9a5a884f 11 char PPULSE;
sleighton 0:10fe9a5a884f 12
sleighton 0:10fe9a5a884f 13 WTIME = 0xff; // 2.7 ms - minimum Wait time
sleighton 0:10fe9a5a884f 14 PTIME = 0xff; // 2.7 ms - minimum Prox integration time
sleighton 0:10fe9a5a884f 15 PPULSE = 1; // Minimum prox pulse count
sleighton 0:10fe9a5a884f 16
sleighton 0:10fe9a5a884f 17 WriteByte(0x72, 0, 0); //Disable and Powerdown
sleighton 0:10fe9a5a884f 18 WriteByte (0x72, 2, PTIME);
sleighton 0:10fe9a5a884f 19 WriteByte (0x72, 3, WTIME);
sleighton 0:10fe9a5a884f 20 WriteByte (0x72, 0xe, PPULSE);
sleighton 0:10fe9a5a884f 21
sleighton 1:159407640167 22 char PIHTL, PIHTH; //Upper interrupt threshold low and high bytes
sleighton 1:159407640167 23
sleighton 2:9db88ca586db 24 PIHTL = 0x01;
sleighton 1:159407640167 25 PIHTH = 0x01; //trigger at 256
sleighton 1:159407640167 26
sleighton 1:159407640167 27 WriteByte (0x72, 0x0A, PIHTL);
sleighton 1:159407640167 28 WriteByte (0x72, 0x0B, PIHTH);
sleighton 1:159407640167 29
sleighton 0:10fe9a5a884f 30 char PDRIVE;
sleighton 0:10fe9a5a884f 31 char PDIODE;
sleighton 0:10fe9a5a884f 32 char PGAIN;
sleighton 0:10fe9a5a884f 33
sleighton 0:10fe9a5a884f 34 PDRIVE = 0; //100mA of LED Power
sleighton 0:10fe9a5a884f 35 PDIODE = 0x20; // CH1 Diode
sleighton 0:10fe9a5a884f 36 PGAIN = 0x08; //4x Prox gain
sleighton 0:10fe9a5a884f 37
sleighton 0:10fe9a5a884f 38 WriteByte (0x72, 0xf, PDRIVE | PDIODE | PGAIN );
sleighton 0:10fe9a5a884f 39
sleighton 0:10fe9a5a884f 40 char WEN, PEN, PON, PIEN;
sleighton 0:10fe9a5a884f 41 WEN = 8; // Enable Wait
sleighton 1:159407640167 42 PIEN = 32; //Enable interrupt
sleighton 0:10fe9a5a884f 43 PEN = 4; // Enable Prox
sleighton 0:10fe9a5a884f 44 PON = 1; // Enable Power On
sleighton 0:10fe9a5a884f 45
sleighton 0:10fe9a5a884f 46 WriteByte (0x72, 0, WEN | PIEN | PEN | PON);
sleighton 0:10fe9a5a884f 47
sleighton 0:10fe9a5a884f 48 wait(0.12); //Wait for 120 ms
sleighton 0:10fe9a5a884f 49 }
sleighton 0:10fe9a5a884f 50
sleighton 2:9db88ca586db 51
sleighton 2:9db88ca586db 52
sleighton 2:9db88ca586db 53
sleighton 1:159407640167 54 uint16_t Prox::readProx(){
sleighton 2:9db88ca586db 55 WriteByte (0x72, 0xE7); //clear interrupt pin (untested)
sleighton 1:159407640167 56 uint16_t prox;
sleighton 0:10fe9a5a884f 57 ReadWord(0x72, 0x18, &prox);
sleighton 0:10fe9a5a884f 58 return prox;
sleighton 0:10fe9a5a884f 59 }
sleighton 0:10fe9a5a884f 60
sleighton 0:10fe9a5a884f 61
sleighton 0:10fe9a5a884f 62
sleighton 0:10fe9a5a884f 63
sleighton 0:10fe9a5a884f 64
sleighton 0:10fe9a5a884f 65 // Read a byte on the i2c interface
sleighton 0:10fe9a5a884f 66
sleighton 1:159407640167 67 void Prox::ReadWord(char addr, char reg, uint16_t *data) {
sleighton 0:10fe9a5a884f 68 I2C i2c(_sda,_scl);
sleighton 0:10fe9a5a884f 69 char reg1 = 0xA0 | reg;
sleighton 0:10fe9a5a884f 70 char reading[2];
sleighton 0:10fe9a5a884f 71 i2c.write(addr,&reg1,1);
sleighton 0:10fe9a5a884f 72 i2c.read(addr,reading,2);
sleighton 0:10fe9a5a884f 73 *data = reading[0] | (reading[1]<<8);
sleighton 0:10fe9a5a884f 74 wait(0.07);
sleighton 0:10fe9a5a884f 75 }
sleighton 0:10fe9a5a884f 76
sleighton 0:10fe9a5a884f 77 void Prox::ReadByte(char addr, char reg, char *bytedata) {
sleighton 0:10fe9a5a884f 78 I2C i2c(_sda,_scl);
sleighton 0:10fe9a5a884f 79 char tempdata;
sleighton 0:10fe9a5a884f 80 char reg1 = 0x80 | reg;
sleighton 0:10fe9a5a884f 81 i2c.write(addr,&reg1,1);
sleighton 0:10fe9a5a884f 82 i2c.read(addr,&tempdata,1);
sleighton 0:10fe9a5a884f 83 *bytedata = tempdata;
sleighton 0:10fe9a5a884f 84 wait(0.07);
sleighton 0:10fe9a5a884f 85 }
sleighton 0:10fe9a5a884f 86
sleighton 0:10fe9a5a884f 87
sleighton 0:10fe9a5a884f 88
sleighton 0:10fe9a5a884f 89 // Write a byte on the i2c interface
sleighton 0:10fe9a5a884f 90
sleighton 0:10fe9a5a884f 91 void Prox::WriteByte(uint8_t addr, uint8_t reg, char data) {
sleighton 0:10fe9a5a884f 92 I2C i2c(_sda,_scl);
sleighton 0:10fe9a5a884f 93 char data1[2];
sleighton 0:10fe9a5a884f 94 data1[0] = 0x80 | reg;
sleighton 0:10fe9a5a884f 95 data1[1] = data;
sleighton 0:10fe9a5a884f 96 i2c.write(addr,data1,2);
sleighton 0:10fe9a5a884f 97 wait(0.07);
sleighton 0:10fe9a5a884f 98
sleighton 0:10fe9a5a884f 99 }
sleighton 0:10fe9a5a884f 100
sleighton 0:10fe9a5a884f 101 void Prox::WriteByte(uint8_t addr, uint8_t reg) {
sleighton 0:10fe9a5a884f 102 I2C i2c(_sda,_scl);
sleighton 0:10fe9a5a884f 103 char data1;
sleighton 0:10fe9a5a884f 104 data1 = 0x80 | reg;
sleighton 0:10fe9a5a884f 105 i2c.write(addr,&data1,1);
sleighton 0:10fe9a5a884f 106 wait(0.07);
sleighton 0:10fe9a5a884f 107
sleighton 0:10fe9a5a884f 108 }