Demonstrates the MAX44000 library and some of the features of the MAX44000
Dependencies: MAX44000 ard2pmod mbed
Fork of ALS_ARD2PMOD_Demo by
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. To run this demonstration you will need:
- MAX44000PMB1 Ambient Light / Proximity Sensor Peripheral Module
- MAXREFDES72# Pmod Adapter for Arduino Platforms
- An mbed enabled board with an Arduino compatible socket. We recommend the MAX32600MBED
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.
Tested platform boards
Links to external supporting material
- MAX44000PMB1 Ambient Light / Proximity Sensor Peripheral Module
- MAXREFDES72# Pmod Adapter for Arduino Platforms
- MAX32600MBED
Diff: main.cpp
- Revision:
- 4:226ef11c3ef4
- Parent:
- 3:61cc32322303
- Child:
- 5:b39bfe8e3d09
--- a/main.cpp Mon Jun 23 05:30:26 2014 +0000 +++ b/main.cpp Mon Jun 30 22:32:02 2014 +0000 @@ -33,18 +33,19 @@ DigitalIn pb4(D7); // Set as input to remove load from PB4 const int alsAddr = 0x94; -const char alsLim = 0x01; +const int alsLim = 0x0008; int main() { char cmd[2]; + int alsData; // SDA (D14) + PB4 (D7) SCL (D15) + PB3 (D6) mux.setAB((MAX14661::SW10 | MAX14661::SW08), (MAX14661::SW09 | MAX14661::SW07)); cmd[0] = 0x02; // Receive Register - cmd[1] = 0xFF; // 1.56ms, 128x + cmd[1] = 0xFC; // 1.56ms, 1x i2c.write(alsAddr, cmd, 2); cmd[0] = 0x03; // Transmit Register @@ -63,13 +64,14 @@ while (true) { wait (0.02); - cmd[0] = 0x04; // ALS Data Register - i2c.write(alsAddr, cmd, 1); + cmd[0] = 0x05; // ALS Data Register Low + i2c.write(alsAddr, cmd, 1, true); i2c.read(alsAddr, cmd, 1); - als = (cmd[0] < alsLim); + alsData = cmd[0]; + als = (alsData < alsLim); cmd[0] = 0x16; // Prox Data Register - i2c.write(alsAddr, cmd, 1); + i2c.write(alsAddr, cmd, 1, true); i2c.read(alsAddr, cmd, 1); if (cmd[0]) { if (!lastProx) {