Hello there!
Currently I got an issue with the J-Link EDU mini. I'm trying to connect to a nRF51822 on a custom board. I had no problems using a J-Link EDU. Since I have no longer access to the J-Link EDU, I bought the 'mini' because it matches the PIN-out of my board perfectly.
Now, trying to connect to the nRF51 failed (no device detected). I started the J-Link Commander and it measures a stable voltage of 1.8V on VTref and the device is operating without any issues (detected via Bluetooth LE). On SEGGER's homepage it says, that the J-Link EDU mini has the same functionality according Cortex M as the J-Link EDU. Which has the same stats as the BASE. The BASE supports target voltages down to 1.2V.
Could it be that the mini does not support those low voltages? SEGGER's documentation didn't give me any hint.
Info: Powering the nRF51 via J-Link is no option, because of the DCDC on the board, which can't stand a higher Voltage than 2.2V.
I hope, you can help me out!
Best regards!
Currently I got an issue with the J-Link EDU mini. I'm trying to connect to a nRF51822 on a custom board. I had no problems using a J-Link EDU. Since I have no longer access to the J-Link EDU, I bought the 'mini' because it matches the PIN-out of my board perfectly.
Now, trying to connect to the nRF51 failed (no device detected). I started the J-Link Commander and it measures a stable voltage of 1.8V on VTref and the device is operating without any issues (detected via Bluetooth LE). On SEGGER's homepage it says, that the J-Link EDU mini has the same functionality according Cortex M as the J-Link EDU. Which has the same stats as the BASE. The BASE supports target voltages down to 1.2V.
Could it be that the mini does not support those low voltages? SEGGER's documentation didn't give me any hint.
Info: Powering the nRF51 via J-Link is no option, because of the DCDC on the board, which can't stand a higher Voltage than 2.2V.
I hope, you can help me out!
Best regards!