Good morning,
I'm quite unable to properly understand the SWD initialization,
The board I use includes the following MCU : RA4M1 : R7FA4M1AB3CFM
Could you please highlight about both points:
Why (and is it normal) that the E2 Lite tool grounds the line (even with High-Z setting in the software settings) ?
What is the init sequence, should i see the MCU pulling low SWDIO or SWCLK while flasher holds Reset line low ?
I'd like to understand and have little more informations about a proper SWD sequence (at least the init phase).
Thanks & Regards,
Jean-François
Do you have the Renesas reference hardware EK-RA4M1 to compare the behavior to a known working design?
Indeed i should get samples of boards, i don't yet.This project is porting another design, integrating the RA4M1, thus i can acquire and thanks for the ref, above board, as well as the Arduino one which is closely similar.
From these i can figure out, as well the prototype, by some magic, will probably work straight, after fixing the mentionned signals, which wire strap and hand soldering haven't possibly not done a good job fixing ...
Regards