USB840F/M/X BLE 5, Thread, Zigbee Dongles
Ver 1.00 May 2019
After Executing
chiperase
, VDD in dongle is set to 1.8V. To use 3.3V VDD
,
change setting in the UICR register.
The command to write UICR->REGOUT0 to output 3.3V supply voltage is:
nrfjprog --memwr 0x10001304 --val fffffff5
After programming this bootloader. Plug the dongle into the PC USB port.
You should able to see new device name “nRF52 SDFU USB”
!
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