Thats what I needed Ytai, I really appreciate your help on this. I really
owe you. I will let you know as soon as possible what do I have done.
On Saturday, March 22, 2014 12:10:27 AM UTC, Ytai wrote:
>
> According to the table on page 10 of the datasheet, the address depends on
> where you're connecting the A0 pin to. You have to connect it to either
> GND, V+, SDA or SCL, resulting in address 0x48, 0x49, 0x4A, ox4B,
> respectively.
> Also note that if you're using the SparkFun breakout board for the TMP102,
> you don't need external pull-ups, as they are included on the breakout
> board, so your connections needs to be:
> VCC <-> IOIO 3.3V
> GND <-> IOIO GND
> SDA <-> IOIO SDA
> SCL <-> IOIO SCL
> ADD0 <-> either one of the 4 pins mentioned above.
>
> BTW, I dug up some old project I have that uses the IOIO with a TMP102.
> Here's the code:
>
> public class TMP102 {
> private static final byte[] TEMP_REQUEST = {0x00};
>
> private final TwiMaster twi_;
> private final byte address_;
> private final byte[] responseBuffer_ = new byte[2];
>
> public TMP102(TwiMaster twi, byte address) {
> twi_ = twi;
> address_ = address;
> }
>
> public float getTemperatureKelvin()
> throws ConnectionLostException, InterruptedException,
> CommunicationException {
> if (!twi_.writeRead(address_, false, TEMP_REQUEST, 1, responseBuffer_,
> 2)) {
> throw new CommunicationException("I2C transaction with TMP102
> failed.");
> }
> int temp = Unsigned.from(responseBuffer_[0]) << 8 |
> Unsigned.from(responseBuffer_[1]);
> temp >>= 4;
> return temp / 16.f + 273.15f;
> }
> }
>
> And:
>
> public class Unsigned {
> public static int from(byte b) {
> return b & 0xFF;
> }
>
> public static int from(short s) {
> return s & 0xFFFF;
> }
> }
>
>
>
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