Oh bloody BUGGER! I think I may have screwed myself. The DW module on one of the TS06.3 boards has stopped responding to SPI.
I tried the old test program "TS06_3_Check_C_nRF51822.hex:, that I archived on the google drive in July. It doesn't work for that board any more, but works OK on the 6.2 boards, and the other 6.3 board. It says that the SPI is not responding.
I'm ashamed to say that I know I plugged in the JTAG wrongly on at least two occasions. Once I fitted it back to front, and another time I fitted it left-justified, rather than right justified, so who knows what I might have done.
At the moment it's absence is not critical because with a bit of fiddling around, I can just revert to using the two 6.2 boards to develop the ranging code.
I should drag out the scope and try to see if I recognize anything funny, but I think I'll have to wait till I get back from NJ.
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