Commit Graph

4 Commits

Author SHA1 Message Date
Damien George d0de16266f rp2/mpthreadport: Add mp_thread_deinit to reset core1 on soft reset.
Any code running on core1 should be stopped on soft-reset (the GC heap is
reset so if code continues to run on core1 it will see corrupt memory).

Signed-off-by: Damien George <damien@micropython.org>
2021-05-09 00:08:30 +10:00
robert-hh 6f06dcaee5 rp2/moduos: Implement uos.urandom().
The implementation samples rosc.randombits at a frequency lower than the
oscillator frequency.  This gives better random values.  In addition, for
an 8-bit value 8 samples are taken and fed through a 8-bit CRC,
distributing the sampling over the byte.  The resulting sampling rate is
about 120k/sec.

The RNG does not include testing of error conditions, like the ROSC being
in sync with the sampling or completely failing.  Making the interim value
static causes it to perform a little bit better in short sync or drop-out
situations.

The output of uos.urandom() performs well with the NIST800-22 test suite.
In my trial it passed all tests of the sts 2.1.2 test suite.  I also ran a
test of the random data with the Common Criteria test suite AIS 31, and it
passed all tests too.
2021-04-09 18:24:38 +10:00
Damien George 195e7dfa06 rp2/modmachine: Implement additional functions incl unique_id and idle.
Added functions in the machine module are:
- unique_id (returns 8 bytes)
- soft_reset
- idle
- lightsleep, deepsleep (not power saving at the moment)
- disable_irq, enable_irq
- time_pulse_us

Signed-off-by: Damien George <damien@micropython.org>
2021-02-02 22:14:22 +11:00
Damien George 469345e728 rp2: Add new port to Raspberry Pi RP2 microcontroller.
This commit adds a new port "rp2" which targets the new Raspberry Pi RP2040
microcontroller.

The build system uses pure cmake (with a small Makefile wrapper for
convenience).  The USB driver is TinyUSB, and there is a machine module
with most of the standard classes implemented.  Some examples are provided
in the examples/rp2/ directory.

Work done in collaboration with Graham Sanderson.

Signed-off-by: Damien George <damien@micropython.org>
2021-01-30 00:42:29 +11:00