T
U
A
B
C
Read temperature sensor at S2, return data and convert
Read temperature sensor at S3, return data and convert
Setup S1/AN2/GP2 for analog, read voltage and return 2 bytes
Setup S2/AN0/GP0 for analog, read voltage and return 2 bytes
Setup S3/AN3/GP4 for analog, read voltage and return 2 bytes
Example host voltage read code:
//declare tx[] and rx[] buffers
tx[0] = 'A';
PutBuffer(tx, 1);//send tx out serial port – substitute your serial port code here
GetBuffer(rx, 2, timeout); //again, substitute your serial port code here
Int temp = rx[1] | (rx[0] << 8);//convert returned data
float actual_voltage = temp/1024.0*5.0);
M
N
O
J
K
L
G
H
I
Setup S1/AN2/GP2 for digital and read state - return 1 byte
Setup S2/AN0/GP0 for digital and read state - return 1 byte
Setup S3/AN3/GP4 for digital and read state - return 1 byte
Setup S1/AN2/GP2 for digital, and set high
Setup S2/AN0/GP0 for digital, and set high
Setup S3/AN3/GP4 for digital, and set high
Setup S1/AN2/GP2 for digital, and set low
Setup S2/AN0/GP0 for digital, and set low
Setup S3/AN3/GP4 for digital, and set low
APPLICATION
The DLP-TEMP-G can be used to monitor temperature at the board or at a distance from the
board. The board supports monitoring of two temperatures. If more than two temperature
measure-ments are required, then the DLP-TEMP9 can be used to monitor/measure up to nine
temperatures.
The board comes with one sensor that is not soldered to the board so that the user has the option
of locating the sensor at a distance from the board using Category 5 cable. This design has been
successfully tested with both sensors located 200 feet away from the board using Category 5
cable. Two pairs of wires in the Category 5 cable are required for the connection. One pair is for
power and ground, and the other pair is for data and ground. If using both sensors, you can
either connect them to the board using one cable for both sensors since the cable has 4 pairs, or
2 cables if the sensors are to be placed in different locations.
3