888e831bf7
The separate A and RM toolchains have been discontinued and replaced by a single toolchain. This updates the links to the RM toolchain to the new toolchain. Signed-off-by: David Lechner <david@pybricks.com>
82 lines
2.6 KiB
Markdown
82 lines
2.6 KiB
Markdown
# The Renesas RA port
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This is a port of MicroPython to the Renesas RA family of microcontrollers.
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Currently supported features are:
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- Filesystem on the internal flash using FatFs.
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- `utime` module with sleep, time, and ticks functions.
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- `uos` module with VFS support.
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- `machine` module with the following classes: `Pin`, `ADC`, `I2C`, `SPI`,
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`SoftI2C`, `SoftSPI`, `UART`, `RTC`
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- sdcard driver if frozen driver is installed.
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Currently supported board product names are:
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- EK-RA6M2
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- RA4M1 CLICKER
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- EK-RA6M1
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- EK-RA4M1
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- EK-RA4W1
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Please refer to the quick reference of `renesas-ra` port for more
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information about the boards.
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## Build instructions
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* MicroPython cross-compier
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The MicroPython cross-compiler must be built first, which will be
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used to pre-compile (freeze) built-in Python code. THis cross-compiler
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is built and run on the host machine, using:
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$ make -C mpy-cross
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This command should be executed from the root directory of this repository.
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All other commands below should be executed from the ports/renesas-ra/ directory.
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* Arm compiler
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An `Arm compiler` is required for the build, along with the associated binary
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utilities. The default compiler is `arm-none-eabi-gcc`, which is available for
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Linux, Mac and Windows hosts via https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads.
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The compiler can be changed using the `CROSS_COMPILE` variable
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when invoking `make`.
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* Obtain submodules
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First the submodules must be obtained using:
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$ make submodules
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* Build binary image `.hex`
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Then to build for a given board subdirectory name, run:
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$ make BOARD=RA6M2_EK clean
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$ make BOARD=RA6M2_EK
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The default board subdirectory name is RA6M2_EK (which is for EK-RA6M2 board)
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but any of the names of the subdirectories in the `boards/` directory can be
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passed as the argument to `BOARD=`; for example `RA4M1_CLICKER`, `RA4M1_EK`,
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`RA4W1_EK` and `RA6M1_EK`.
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The above command should produce binary images `firmware.hex` in the
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build-RA6M2_EK/` subdirectory (or the equivalent directory for the board specified).
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## Supported/Unsupprted funtions
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Please refer to the `renesas-ra` quick reference.
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## Known issues
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### all boards
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* machine.lightsleep(time_ms) and machine.deepsleep(time_ms) raise uncaught exceptions.
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>>> machine.deepsleep(1000)
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>>> Uncaught exception in ExtInt interrupt handler line 16
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TypeError:
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### RA4M1-CLICKER
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* mpremote: mount command is not available due to limited memory resources.
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### EK-RA4M1
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* mpremote: mount command is not available due to limited memory resources.
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### EK-RA4W1
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* mpremote: "Execution: timeout waiting for remote" error happens when importing a file on /remote.
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