I am working through the TinyFPGA BX User Guide SOS blinky example.
When I get to the Atom IDE apio upload step, I get Error: board TinyFPGA-BX not connected.
(I’m on a Retina MacBook Pro running Windows 10 Pro, version 1709, build 16299.492 via bootcamp.)
With the BX plugged into a USB port I get a steady power LED and a blinking bootloader LED.
Checking Device Manager the BX corresponds to COM3 or COM4 depending upon which USB port I am connected to.
apio system --lsserial
Number of Serial devices found: 1
Description: USB Serial Device (COM3)
Hardware info: USB VID:PID=1209:2100 SER=5 LOCATION=1-1
Running apio upload -v standalone reports the same error.
I get the same error if I also depress the reset button on the BX.
I have tried several known good USB cables.
Any ideas or pointers to next steps to diagnose the problem?