[nRF port] Unable to Activate the FAT File System
I noticed that FAT file system couldn't be enabled on a nRF board as open("code.py", "wb") would fail making it impossible to create files onto the board.
Indeed, after building and flashing the firmware with the FAT file system enabled
(#define MICROPY_VFS (1) in mpconfigport.h and make SD=s132 MICROPY_FATFS=1 sd) the following error occurs:
>>> open("code.py", "wb")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 1] EPERM
nrf: internal flash filesystem/storage not implemented with VFS
I'm having trouble loading the VFS onto my custom board using a nrf52832. The board is not using an SD card and the only connections are UART lines (Rx and Tx) and 2 LEDs.
Within a Virtual Machine on windows I'm running Linux and have completed the following steps:
- I've altered the UART and LED pins in the micropython/ports/nrf/boards/pca10040/mpconfigboard.h to match my configuration
- I've set MICROPY_VFS in mpconfigport.h
- I've compiled using make BOARD=pca10040 MICROPY_VFS_FAT=1, this compiles successfully and generates the following hex
On windows
- On command line I can run the command "ampy -p COM9 run blink.py" which just blinks the on board LEDs
However when I run the command
"ampy -p COM9 ls"
It just returns with nothing and the command line prompt appears. This leads me to believe that the VFS has not been installed correctly on the nrf chip.
I am able to open a python terminal via PuTTY and when I type the command "os.listdir()" it returns empty
Have I missed a step when compiling perhaps?
Any help would be greatly appreciated