Thanks to all for the info. With your help I was able to get the master / slave communications working as well as communicating with a battery pack on the smbus.
I am attempting to communicate between two processors using i2c, but having a problem. In the following code I simply want to send a byte of data from the master to the slave and back again. The maste ...
I'm using the following code to read spi input using an interrupt. The interrupt latency appears to be about 4.5uS from the last rising edge of the scl to the falling edge of the TEST1 pin in the isr. ...