Add os.urandom to ports/analog #10549
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I added a port-specific module, os.urandom() to ports/analog. Now users can generate random numbers from the TRNG hardware. The following code generates 3 random numbers and prints them in hex: import os print(os.urandom(3).hex()) Files I modiied: * ports/analog/Makefile: added INC and SRC for TRNG * ports/mpconfigport.mk: enabled CIRCUITPY_RANDOM * ports/analog/common-hal/os/__init__.c: implemented common_hal_os_urandom() * ports/analog/supervisor/port.c: initialized the TRNG object
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Summary
Add
os.urandom()support to the analog port. Users can now generate random numbers utilizing the TRNG (true random number generator) hardware on the analog port.The following code generates multiple random numbers and prints them in hex:
An example of the expected output is:
Testing
After I finished implementing the module, I built and flashed the project in the
ports/analogdirectory using OpenOCD with a J-Link device. After flashingfirmware.elfto an AD-APARD32690-SL, I ran the code snippet in both code.py and REPL and got different numbers every time I executed it.