Hello, I have a 4 identical microcontrollers daisy chain wich seems to work...exept I detect 8 devices?... My setup is the folowing...I have a segger J-link edu mini and 4 wire JTAG. basically I dont got JTRST but NRST connected to the J-link... In tis event should my reset strategy be Type 0:Normal or None?? Boot 0 is shorted to GND.
Something seems to work, as I can enter the debugging session and get this log below. But my true goal is to precisely select ny microcontroller on this chain and debug this and get to work. I seem to be only able to program tap #auto(position 0?) and position 2... Why IRPre9?? No idea...Saw this in a post.
J-Link found 8 JTAG devices, Total IRLen = 36
JTAG ID: 0x4BA00477 (Cortex-M3)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x080004D8 (Data = 0xB580E7FE)
Read 2 bytes @ address 0x080004D8 (Data = 0xE7FE)
Connected to 127.0.0.1
Reading all registers
Anyways, this is not my main problem, I am just confused as to why I get this effect, no numerical combination of position and IRPre seem to work.
Any help would be appreciated, Please shed light on this issue?
Something seems to work, as I can enter the debugging session and get this log below. But my true goal is to precisely select ny microcontroller on this chain and debug this and get to work. I seem to be only able to program tap #auto(position 0?) and position 2... Why IRPre9?? No idea...Saw this in a post.
J-Link found 8 JTAG devices, Total IRLen = 36
JTAG ID: 0x4BA00477 (Cortex-M3)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x080004D8 (Data = 0xB580E7FE)
Read 2 bytes @ address 0x080004D8 (Data = 0xE7FE)
Connected to 127.0.0.1
Reading all registers
Anyways, this is not my main problem, I am just confused as to why I get this effect, no numerical combination of position and IRPre seem to work.
Any help would be appreciated, Please shed light on this issue?