Error Trying to program nRF51822

[Jorge Munoz]

Hello,

I have been looking to program this IC, connecting via SWD with no luck. I can connect to the target but for some reason once i try to perform erase programming or read i got an error message with the RAM.

Connecting ...
 - Connecting via USB to J-Link device 0
 - Target interface speed: 2000 kHz (Fixed)
 - VTarget = 3.254V
 - Initializing CPU core (Init sequence) ...
    - Executing Reset (0, 0 ms)
    - Initialized successfully
 - Target interface speed: 2000 kHz (Fixed)
 - Connected successfully
Erasing chip ...
 - Erasing 257 sectors, 2 ranges, 0x0 - 0x3FFFF, 0x10001000 - 0x100013FF
 - ERROR: RAM check failed @ address 0x20000000.
 - ERROR: Write: 0x03020100 07060504
 - ERROR: Read: 0x00000000 00000000
 - ERROR: (0 bytes of RAM have been checked successfully)
 - ERROR: Failed to erase chip
Disconnecting ...
 - Disconnected 

I am using a JFlasher portable, is there any known compatibility issue with this IC?

[Christopher]

The same issue has already been reported on this post. Do you use a custom hardware ? Which programmer and which version of the Segger tools do you use ?

[Jorge Munoz]

Using JFlasher Portable with tektronix PS. Using JFlash 5.12, also already tried with JFlash Lite. I have been able to program like 5 different types of ARMs using the same programmer so i don't think is related with the programmer itself.