I have a problem on iMXRT1050-EVKB board.
IDE : MCUXpresso IDE v10.2.1 [Build 795]
Debug: OpenSDA included on eval board
App : SDK 2.4.2 WDOG driver application
Test WDog application works correctly.
I found WDog timout value too large (2 minutes)
then I changed timout for 1 seconde...
The application works like I would like.
Problem: Now I can't download a new application by OpenSDA
There is everytime a "Target error from Commit Flash write: Nn(05). Wire ACK Fault in DAP acces".
The only possibility I found for downloading a new application is using "PEMicro Multilink Universal" connected on JTAG connector ( and removing J32, J33)
When I Tested other SDK applications (except WDog 1seconde), I didn't have any problems with OpenSDA.
Is it an OpenSDA problem (bug) or a SWD reduced pin protocol problem?
For a new design, is it necessary to place JTAG connector 20pins(TMS,TCK,TDI,TDO,TRST,SRST,VRef,POW,Gnd)?
Or only SWD wires(SWD_DIO, SWD_CLK, Reset, Gnd)
attached screenshot IDE