I am trying to use I2C to communicate between my XBee3 (controller) and an adafruit trinket m0 (peripheral). I'm pretty confident I have the modules connected properly (trinket SCL/pin 2 to xbee SCL/pin DIO1 & trinket SDA/pin 0 to xbee SDA/pin DIO11, and both grounds are connected). Here is my arduino code on the trinket:
#include <Wire.h>
void setup()
{
Wire.begin(72); // join i2c bus
Wire.onReceive(receiveEvent); // register event
Serial.begin(9600); // start serial for output
Serial.print("Waiting for data...");
}
void loop()
{
delay(100);
}
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void receiveEvent(int howMany)
{
(void)howMany; // avoid compiler warning about unused parameter
while(1 < Wire.available()) // loop through all but the last
{
char c = Wire.read(); // receive byte as a character
Serial.print(c); // print the character
}
int x = Wire.read(); // receive byte as an integer
Serial.println(x); // print the integer
}
and here is my code on the XBee:
from machine import I2C
# Instantiate an I2C peripheral.
i2c = I2C(1)
slave_addr = 72
i2c.writeto(slave_addr, b'123', False)
Additionally, when I run an i2c.scan() on the xbee with an ISM330DHCX connected to the xbee's I2C, the address pops right up. But when I use the exact same code with the xbee connected to the trinket m0, the xbee cannot find any devices. (Code pasted below)
from machine import I2C
# Instantiate an I2C peripheral.
i2c = I2C(1)
# Scan for I2C slaves connected to the interface and print their address.
for address in i2c.scan():
print("- I2C device found at address: %s" % hex(address))
Does anyone have any ideas what I'm doing wrong with configuring the trinket m0 to be an i2c peripheral? Thank you!
