Hi,
I am trying to get i2c working on a EK-TM4C1294XL on energia. I am trying to user i2c channel 0. So they should be on pb2 and pb3. Thing is, I do not see any signal on sda or sck on the scope except for the pullup.
On the serial debug I see "Start" and "Loop" but "Loop2" never appears. As simpel as this program is, I am not getting it or something is wrong in the libraries.
Hope you can help,
cheers
John
#include <Wire.h>
void setup()
{
Wire.setModule(0);
Wire.begin(); // join i2c bus (address optional for master)
Wire.setModule(0);
Serial.begin(115200); // start serial communication at 9600bps
pinMode(PC_7, OUTPUT);
pinMode(PB_2, INPUT_PULLUP);
pinMode(PB_3, INPUT_PULLUP);
Serial.println("Start");
}
void loop()
{
Serial.println("Loop");
Wire.beginTransmission(112); // transmit to device #112 (0x70)
Wire.write(byte(0x00)); // sets register pointer to the command register (0x00)
Wire.write(byte(0x50)); // command sensor to measure in "inches" (0x50)
Wire.endTransmission(); // stop transmitting
Serial.println("Loop2");
digitalWrite(PC_7,HIGH); // turn the LED on (HIGH is the voltage level)
delay(250); // wait a bit since people have to read the output :)
digitalWrite(PC_7, LOW); // turn the LED off by making the voltage LOW
delay(250); // wait a bit since people have to read the output :)
}