E.g. AP1 on a STM32WLE5 points to a ROM table, but access to the ROM table
via AP1 hangs forever.
- Substantial reduce timeout when wait for a response. Valid access should
succeed fast.
- Abort AP access to free DP for other accesses
- Don't throw exception, only set dp->fault
- React on higher level
- RP2040 show both DPs
- Multidrop test with STM32L552 and STM32H745 allows selection
with "-m 0x4500041" (H7), "-m 1" (L552) or "-m 0x01002927" (RP2040)
This adds a TRY_CATCH around the adiv5_ap_read_id() in
adiv5_component_probe() and resets the DP when that happens.
It seems like the STM32WLE5 comes with the AP of the inactive core
enabled in a way that does not make it detectable, and the current code
times out and leaves the whole device hanging.
Catching the timeout and calling adiv5_dp_abort() seems to restore the
device to a useable state.
Tested on Seed LoRa-E5 (STM32E5JC).
STM32WLE5 has the same dual core chip as STM32WL5. For the second
core, the additional AP can be see, but access to e.g. CIDR0 for that
Romtable fails.
Aborting the scan too if again the second read of CIDR0 fails makes
sense anyways!
It seems, writing to DHCSR fails silent when the device is sleeping.
Reading DHCS during sleep may return nonsense.
Repeated write may at some point catch the device running and succeed.
With devices sleeping for long time and running on faster clock the
chance for a successful hotplug gets smaller.
- Try hard to halt a sleeping device
- Prepare vector catch and enable all debug units by TRACENA
- Release reset
- Apply device specific fixes
-- STM32F7: Store old value of DBGMCU_CR, enable debug in sleep in
DBGMCU before reading PIDR and restore DBGMCU on detach.
Signed-off-by: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Firmware BMP with ENABLE_DEBUG=1 will print WARN and INFO as before.
PC-Hosted BMPwill alway print to stderr. Warn is printed unconditional,
INFO, GDB, TARGET, DONGLE and WIRE will print if their appropriate bit in
cl_debuglevel is set via the -v verbose command line argument.
INFO will go to stdout with -t or -l.
Uwe Bonnes
Björn Mellström
James Turton
Fabio Baltieri
Francesco Valla
Fredrik Ahlberg
Valmantas Paliksa