QUERY · ISSUE

[nrf-port] NRF51822 BLE is not working (can't apply GAP parameters)

openby katteopened 2021-09-21updated 2023-02-23

I've tried to compile and use bluetooth on a NRF51822 on a PCA10028, but I think that something in the code is broken..
If I compile for PCA10028 the board hang and REPL don't start.
if I compile for PCA10000, PCA10001, PCA10031 I always get this error:
No problem on the PCA10040.

>>> MicroPython v1.17-63-g67d1dca9c-dirty on 2021-09-21; PCA10001 with NRF51822
Type "help()" for more information.
>>> import ble
>>> ble.enable()
SoftDevice enabled
Traceback (most recent call last):
  File "<stdin>", in <module>
OSError: can't apply GAP parameters

CANDIDATE · ISSUE

nRF microbit (nRF51822) issues

openby rcolisteteopened 2020-08-17updated 2020-12-03

I've built the ports/nrf for microbit with default configuration :

[nrf]$ make BOARD=microbit clean
[nrf]$ make -j8 BOARD=microbit

and using $ screen /dev/ttyACM0 115200 to access REPL, but have some issues :

file system microbitfs is not accessible via ufs or Mu Editor. How to externally acess the internal file system ? With official MicroPython for BBC micro:bit ufs and Mu Editor can access the files;
Ctrl+d in REPL freezes, as well as machine.soft_reset();
deepsleep() and lightsleep() don't work. It seems that __WFIand __WFE are not working on microbit/nRF51822;
unstable I2C scan reading.

And building with Bluetooth :

[nrf]$ make BOARD=microbit clean
[nrf]$ make -j8 BOARD=microbit SD=s110

then REPL is not accessible at all via $ screen /dev/ttyACM0 115200.

Not issues, but features lacking with respect to official MicroPython for BBC Micro:bit :

no float numbers and math module, but it is possible to enable, see my commit "nrf : nRF51 with float enabled" in my branch;
module 'microbit' :
- no button_a.*/button_b.*;
- no display.read_light_level();
- no accelerometer.*;
- no compass.*.

About the buttons A and B, it is simple to read via machine.Pin :

from machine import Pin
button_a = Pin(Pin.cpu.P17, Pin.IN, Pin.PULL_UP)
button_b = Pin(Pin.cpu.P26, Pin.IN, Pin.PULL_UP)
button_a.value()   # button A not pressed
    1
button_a.value()   # button A pressed
    0

[nrf-port] NRF51822 BLE is not working (can't apply GAP parameters)

nRF microbit (nRF51822) issues

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