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Step 14Serial Command and Python Extras
The firmware, as-is, only provides a few built-in visuals. In order to get more visuals, you either need to hack the firmware, or you need to communicate with the firmware via its serial protocol.
You can either communicate with the firmware using a terminal application such as hyperterminal or minicom, or you can use a programing language like Perl, Python or Java to orchestrate animations. The firmware sets the serial port's BAUD at 115200. Along with the code to the firmware, you will find a script called "clock.py". This python script will draw a clock face on the platter using the serial communication protocol.
The firmware sets up the display for 255 individual slices. It builds a double-buffered frame-buffer, allocating one byte to represent each slice. The double-buffer allows you to draw to the device without disturbing the current frame. Once you upload your frame, you must issue a page flip command (command f) to have it displayed.
Serial commands:
r - Report on status
h - Write to the hidden page
v - Read the visible page
c - Clear the page
s - Set single slice number to a value
f - Flip page
1 - Setup test pattern 1
2 - Setup test pattern 2
You can either communicate with the firmware using a terminal application such as hyperterminal or minicom, or you can use a programing language like Perl, Python or Java to orchestrate animations. The firmware sets the serial port's BAUD at 115200. Along with the code to the firmware, you will find a script called "clock.py". This python script will draw a clock face on the platter using the serial communication protocol.
The firmware sets up the display for 255 individual slices. It builds a double-buffered frame-buffer, allocating one byte to represent each slice. The double-buffer allows you to draw to the device without disturbing the current frame. Once you upload your frame, you must issue a page flip command (command f) to have it displayed.
Serial commands:
r - Report on status
h - Write to the hidden page
v - Read the visible page
c - Clear the page
s - Set single slice number to a value
f - Flip page
1 - Setup test pattern 1
2 - Setup test pattern 2
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its giving me a bunch of trouble, and id hate to give up on such an awesome project, right at the end.