circuitpython

djsundog/circuitpython

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Author	SHA1	Message	Date
Phil Howard	71f6eb5ac9	rp2: Mark gc_heap NOLOAD for faster boot. Create a new linker section .unitialized_bss for bss that does not need zero-initialising. Move gc_heap to this section, which saves ~30ms from rising edge of RESET to setting a pin HIGH in MicroPython. Zero fill happens in Pico SDK crt0.S before ROSC is configured. It's very, very slow. Signed-off-by: Phil Howard <phil@gadgetoid.com>	2022-08-11 14:16:29 +10:00
graham sanderson	52d3ae707d	rp2/memmap_mp.ld: Update for latest SDK.	2021-02-02 10:59:10 +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

Author

SHA1

Message

Date

Phil Howard

71f6eb5ac9

rp2: Mark gc_heap NOLOAD for faster boot.

Create a new linker section .unitialized_bss for bss that does not need
zero-initialising.

Move gc_heap to this section, which saves ~30ms from rising edge of RESET
to setting a pin HIGH in MicroPython.

Zero fill happens in Pico SDK crt0.S before ROSC is configured.  It's very,
very slow.

Signed-off-by: Phil Howard <phil@gadgetoid.com>

2022-08-11 14:16:29 +10:00

graham sanderson

52d3ae707d

rp2/memmap_mp.ld: Update for latest SDK.

2021-02-02 10:59:10 +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

3 Commits