toggle quoted messageShow quoted text
I can get to the diagnostic menu. I assume I am to press 1 for the
core? I tried all of them, and I see nothing happening. I will
load my code, and look with a scope at the I2C bus.
On 8/15/2018 4:43 PM, John wrote:
The interaction with the diagnostic software is via the serial
port as I assumed the communication with the display or the
encoder could be faulty.
Use the serial monitor of the IDE. See the README.txt file for the
The i2c bus tests are:
1. Is the bus locked (lines pulled down)?
2. Is the si5351 at the expected address responding?
3. Can we write a byte to a register at that address?
If you get error 1 check the bus. You could change the blink
sketch to toggle A4 and A5 and measure the voltages (0V then
If you get error 2 it could be 3.3V not getting to si5351 or chip
dead, or other bus issue.
If you get error 3, prepare the (de)soldering station, chip gone
73, John (VK2ETA)