Dragino LSN50 and STLink
I noticed the Dragino LSN50 board has been ported to Zephyr and that's pretty cool.
I have one of this board and following the page https://docs.zephyrproject.org/latest/boards/arm/dragino_lsn50/doc/index.html#flashing-an-application-to-dragino-lsn50 they say 'Connect the Dragino LSN50 to a STLinkV2...'.
Since the the board has no dedicated connect to JTAG/SWD, I read the stm32l072cz datasheet and found out the the SWDIO is PA13 and SWCLK is PA14.
I connected these pins at my J-Link Ultra in the following way:
JTAG -> LSN50
pin 6 -> pin GND
pin 7 -> pin PA13 (SWDIO)
pin 9 -> pin PA14
pin 19 -> pin VDD (+3.3V)
And tried to connect the Ozone but it did not work. At Ozone, in J-Link Settings I have the target device: STM32L072CZ, Target Interface: SWD:auto speed and Host Interface: USB.
If someone knows how to connect the LSN50 board and could explain me I'll be very grateful.
All the best,