Commit Graph

12 Commits

Author SHA1 Message Date
robert-hh dfd4324eb1 mimxrt: Add flash storage support with VFS and littlefs filesystem.
This commit adds full support for a filesystem on all boards, with a block
device object mimxrt.Flash() and uos.VfsLfs2 enabled.

Main changes are:
- Refactoring of linker scripts to accomodate reserved area for VFS.  VFS
  will take up most of the available flash. 1M is reserved for code.  9K is
  reserved for flash configuration, interrupts, etc.
- Addition of _boot.py with filesystem init code, called from main.c.
- Definition of the mimxrt module with a Flash class in modmimxrt.[ch].
- Implementation of a flash driver class in mimxrt_flash.c.  All flashing
  related functions are stored in ITCM RAM.
- Addition of the uos module with filesystem functions.
- Implementation of uos.urandom() for the sake of completeness of the uos
  module.

It uses sample code from CircuitPython supplied under MIT license, which
uses the NXP SDK example code.

Done in collaboration with Philipp Ebensberger aka @alphaFred who
contributed the essential part to enable writing to flash while code is
executing, among other things.
2021-06-01 23:42:57 +10:00
robert-hh c303b15f10 mimxrt: Enable frozen modules. 2021-06-01 22:57:09 +10:00
Philipp Ebensberger ff5d39529c mimxrt: Implement machine.Pin class.
- modified pin type from pin_obj_t to machine_pin_obj_t
- created machine_pin.c
- implemented basic version of make-pins.py to genertate pins.c/.h files
  automatically; the only alternate function currently supported is GPIO
- added af.csv files for all supported MCUs
- replaced pins.c/pins.h files with pin.csv for all boards
- implemented on/off/high/low/value/init methods
- Implemented IN/OUT/OPEN_DRAIN modes
- modified LDFLAGS for DEBUG build to get usefull .elf file for debugging

Signed-off-by: Philipp Ebensberger
2021-05-26 00:12:42 +10:00
svetelna 23ce25a7c3 mimxrt/boards: Add MIMXRT1050_EVK board, based on MIMXRT1060_EVK. 2021-03-11 16:42:38 +11:00
Albort Xue 5f50568b1f mimxrt/boards: Add MIMXRT1064_EVK board. 2020-09-09 00:06:33 +10:00
Albort Xue 05e5d411b5 mimxrt/boards: Set __heap_size__ to 0 in MIMXRT1011.ld.
Do not use the traditional C heap in order to save memory, because the
traditional C heap is unused in MicroPython.
2020-06-10 22:49:26 +10:00
Philipp Ebensberger 29e258611a mimxrt/boards: Integrate support for MIMXRT1020_EVK board. 2020-06-09 19:04:23 +10:00
Albort Xue e0d539f79d mimxrt/boards: Enable LED class for MIMXRT1060_EVK board. 2020-06-09 18:51:08 +10:00
Philipp Ebensberger 02cc4462b7 mimxrt: Add initial impl of machine.LED class, and basic pin support.
This commit implements an LED class with rudimentary parts of a pin C API
to support it.  The LED class does not yet support setting an intensity.

This LED class is put in the machine module for the time being, until a
better place is found.

One LED is supported on TEENSY40 and MIMXRT1010_EVK boards.
2020-06-05 11:47:48 +10:00
Albort Xue b3bc9808f2 mimxrt/boards: Add MIMXRT1060_EVK board. 2020-05-27 16:49:52 +10:00
Jim Mussared 7eea0d8b6c mimxrt: Add MIMXRT1010 board. 2020-03-11 15:36:27 +11:00
Jim Mussared f46782dde9 mimxrt: Add new, minimal port to NXP i.MX RT series CPUs.
This is an extremely minimal port to the NXP i.MX RT, in the style of the
SAMD port  It's largely based on the TinyUSB mimxrt implementation, using
the NXP SDK.  It currently supports the Teensy 4.0 board with a REPL over
the USB-VCP interface.

This commit also adds the NXP SDK submodule (also from TinyUSB) to
lib/nxp_driver.

Note: if you already have the tinyusb submodule initialized recursively you
will need to run the following as the tinyusb sub-submodules have been
rearranged (upstream):

    git submodule deinit lib/tinyusb
    rm -rf .git/modules/lib/tinyusb
    git submodule update --init lib/tinyusb
2020-03-11 15:34:13 +11:00