Maxim Integrated / Mbed 2 deprecated MAX44000PMB1_Demo

Demonstrates the MAX44000 library and some of the features of the MAX44000

Dependencies:   MAX44000 ard2pmod mbed

Fork of ALS_ARD2PMOD_Demo by Maxim Integrated

MAX44000PMB1 Demonstration

This demonstrates some of the capabilities of the MAX44000. This is written to work with the MAXREFDES72# adapter board and the MAX44000PMB1 peripheral module. It uses the standard Arduino pin names and it will compile for most arduino form-factor mbed boards. /media/uploads/switches/max44000pmb1_demo.jpg To run this demonstration you will need:

In this demonstration the LEDs are changed based on data from the sensor.

  • LED1 toggles when something is first detected by the proximity sensor.
  • LED2 indicates when the Ambient Light Sensor reads greater than a set value (alsLim).
  • LED3 will stay on whenever something is detected by the proximity sensor and stay on for an additional 5s after it is no longer detected.

Note: Some boards use D13 for an LED signal, so this example uses the second row (row B, pins 7 through 12) of the Pmod connector. /media/uploads/switches/max44000_align.jpg

Tested platform boards

Links to external supporting material

main.cpp@1:03aeb304d3b3, 2014-06-22 (annotated)

Committer:
gsteiert
Date:
Sun Jun 22 23:04:51 2014 +0000
Revision:
1:03aeb304d3b3
Parent:
0:803011eae289
Child:
2:405cc6627ffb
Includes support for dual row, but commented out.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gsteiert 0:803011eae289 1 #include "mbed.h"
gsteiert 0:803011eae289 2 #include "MAX14661.h"
gsteiert 0:803011eae289 3
gsteiert 0:803011eae289 4 MAX14661 mux(D14, D15);
gsteiert 1:03aeb304d3b3 5 I2C i2c(D14, D15);
gsteiert 1:03aeb304d3b3 6 DigitalOut r(LED1);
gsteiert 1:03aeb304d3b3 7 DigitalOut g(LED2);
gsteiert 1:03aeb304d3b3 8 DigitalOut b(LED3);
gsteiert 1:03aeb304d3b3 9 //DigitalIn pa3(D12); // Set as input to remove load from PA3
gsteiert 1:03aeb304d3b3 10 //DigitalIn pa4(D13); // Set as input to remove load from PA4
gsteiert 1:03aeb304d3b3 11 DigitalIn pb3(D6); // Set as input to remove load from PB3
gsteiert 1:03aeb304d3b3 12 DigitalIn pb4(D7); // Set as input to remove load from PB4
gsteiert 1:03aeb304d3b3 13
gsteiert 1:03aeb304d3b3 14 const int alsAddr = 0x94;
gsteiert 1:03aeb304d3b3 15 const char alsLim = 0x01;
gsteiert 0:803011eae289 16
gsteiert 0:803011eae289 17 int main()
gsteiert 0:803011eae289 18 {
gsteiert 1:03aeb304d3b3 19 char cmd[2];
gsteiert 1:03aeb304d3b3 20
gsteiert 1:03aeb304d3b3 21 /* // SDA(D14) + PA4(D13) + PB4(D7) , SCL(D15) + PA3(D12) + PB3(D6)
gsteiert 1:03aeb304d3b3 22 mux.setAB((MAX14661::SW10 | MAX14661::SW11 | MAX14661::SW08),
gsteiert 1:03aeb304d3b3 23 (MAX14661::SW09 | MAX14661::SW12 | MAX14661::SW07));
gsteiert 1:03aeb304d3b3 24 */
gsteiert 1:03aeb304d3b3 25
gsteiert 1:03aeb304d3b3 26 // SDA (D14) + PB4 (D7) SCL (D15) + PB3 (D6)
gsteiert 1:03aeb304d3b3 27 mux.setAB((MAX14661::SW10 | MAX14661::SW08),
gsteiert 1:03aeb304d3b3 28 (MAX14661::SW09 | MAX14661::SW07));
gsteiert 1:03aeb304d3b3 29
gsteiert 1:03aeb304d3b3 30 cmd[0] = 0x02; // Receive Register
gsteiert 1:03aeb304d3b3 31 cmd[1] = 0xFF; // 1.56ms, 128x
gsteiert 1:03aeb304d3b3 32 i2c.write(alsAddr, cmd, 2);
gsteiert 1:03aeb304d3b3 33
gsteiert 1:03aeb304d3b3 34 cmd[0] = 0x03; // Transmit Register
gsteiert 1:03aeb304d3b3 35 cmd[1] = 0x0F; // 110mA
gsteiert 1:03aeb304d3b3 36 i2c.write(alsAddr, cmd, 2);
gsteiert 1:03aeb304d3b3 37
gsteiert 1:03aeb304d3b3 38 cmd[0] = 0x01; // Config Register
gsteiert 1:03aeb304d3b3 39 cmd[1] = 0x10; // ALS/Prox Mode
gsteiert 1:03aeb304d3b3 40 i2c.write(alsAddr, cmd, 2);
gsteiert 1:03aeb304d3b3 41
gsteiert 1:03aeb304d3b3 42 bool lastProx = false;
gsteiert 1:03aeb304d3b3 43 int offDelay = 0;
gsteiert 1:03aeb304d3b3 44 r = false;
gsteiert 1:03aeb304d3b3 45 g = false;
gsteiert 1:03aeb304d3b3 46 b = false;
gsteiert 1:03aeb304d3b3 47
gsteiert 1:03aeb304d3b3 48 while (true) {
gsteiert 1:03aeb304d3b3 49 wait (0.02);
gsteiert 1:03aeb304d3b3 50 cmd[0] = 0x04; // ALS Data Register
gsteiert 1:03aeb304d3b3 51 i2c.write(alsAddr, cmd, 1);
gsteiert 1:03aeb304d3b3 52 i2c.read(alsAddr, cmd, 1);
gsteiert 1:03aeb304d3b3 53 g = (cmd[0] < alsLim);
gsteiert 1:03aeb304d3b3 54
gsteiert 1:03aeb304d3b3 55 cmd[0] = 0x16; // Prox Data Register
gsteiert 1:03aeb304d3b3 56 i2c.write(alsAddr, cmd, 1);
gsteiert 1:03aeb304d3b3 57 i2c.read(alsAddr, cmd, 1);
gsteiert 1:03aeb304d3b3 58 if (cmd[0]) {
gsteiert 1:03aeb304d3b3 59 if (!lastProx) {
gsteiert 1:03aeb304d3b3 60 r = !r;
gsteiert 1:03aeb304d3b3 61 }
gsteiert 1:03aeb304d3b3 62 lastProx = true;
gsteiert 1:03aeb304d3b3 63 offDelay = 250;
gsteiert 1:03aeb304d3b3 64 b = false;
gsteiert 1:03aeb304d3b3 65 } else {
gsteiert 1:03aeb304d3b3 66 lastProx = false;
gsteiert 1:03aeb304d3b3 67 }
gsteiert 1:03aeb304d3b3 68 if (offDelay > 0) { offDelay -= 1; }
gsteiert 1:03aeb304d3b3 69 else { b = true; }
gsteiert 1:03aeb304d3b3 70 }
gsteiert 0:803011eae289 71 }