Jonathan's notes

This method should work with all printers of the ULD driver family:

• HP Color Laserjet 15x series
• HP Color Laser MFP 17x Series
• HP Laster 10x Series
• HP Laserjet MFP M433
• HP Laserjet MFP M436
• HP LaserJet MFP M72625 72630
• HP Color Laser MFP 13x 30 131 134 135 135a ... series

Under last linux versions, the ippusbxd software blocks the device from working, remove it:

$ sudo apt remove ippusbxd

First, download the drivers from the HP website:

$ wget https://ftp.hp.com/pub/softlib/software13/printers/MFP170/ULDLINUX_V1.00.39_00.12.zip

or the page if url changed: https://support.hp.com/us-en/drivers/selfservice/hp-laser-mfp-130-printer-series/24494378

if you don't see the driver, try changing the os to linux ubuntu.

The decompact it, and run ./install.sh in the uld folder. After the license agreement it asks you for a confirmation, whatever is written, type "y" and enter, localized replies won't work.

Try running manually

While trying to port some C code to micropython, I needed to set a lot of defines in a code as Python global vars.

Given those defines :

#define    CMD_SIZE                           512   
/*
frame format
*/
#define    FRAME_B                            0xA5
#define    FRAME_E0                           0xCC
#define    FRAME_E1                           0x33
#define    FRAME_E2                           0xC3
#define    FRAME_E3                           0x3C
/*
color define
*/
#define    WHITE                              0x03
#define    GRAY                               0x02
#define    DARK_GRAY                          0x01
#define    BLACK                              0x00
/*
command define
*/
#define    CMD_HANDSHAKE                      0x00                                                     //handshake
#define    CMD_SET_BAUD                       0x01                                                     //set baud
#define    CMD_READ_BA