e4562fc538
Squashed commit of the following:
Author: Gregory Nutt <gnutt@nuttx.org>
Completes review of configs/gapuino.
arch/risc-v/include/gap8/chip.h: Replace the moved chip.h header file with a dummy chip.h header file just to keep the system happy.
Move include/gap8/chip.h to src/gap8/chip.h. Internal details should not be exposed outside of arch/ and configs/. Review all headers files in src/gap8
Review of arch/risc-v/include.
Author: hhuysqt <hyq9606@126.com>
corrected author and email
Add app initialization, add signal support, cleanup irq context and configs
fix some warnings
gapuino initial port
GAP8 initial port
89 lines
2.5 KiB
Plaintext
89 lines
2.5 KiB
Plaintext
README
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======
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gapuino is an evaluation board for GAP8, a 1+8-core DSP-like RISC-V
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MCU. GAP8 features a RI5CY core called Fabric Controller(FC), and a
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cluster of 8 RI5CY cores that runs at a bit slower speed. GAP8 is an
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implementation of the opensource PULP platform, a Parallel-Ultra-Low-
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Power design.
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The port is currently very minimal, though additional support may be
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added in the future to address more of the board peripherals.
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Supported:
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- USB UART (console port)
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- uDMA on SOC domain
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- FLL clock scaling
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Not supported:
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- SPI, I2C, I2S, CPI, LVDS, Hyper-bus on the uDMA subsystem
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- the sensor board
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- the 8-core cluster
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- the Hardware convolution engine
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See also:
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gapuino board and the sensor board:
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https://gwt-website-files.s3.amazonaws.com/gapuino_um.pdf
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https://gwt-website-files.s3.amazonaws.com/gapuino_multisensor_um.pdf
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GAP8 datasheet:
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https://gwt-website-files.s3.amazonaws.com/gap8_datasheet.pdf
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Contents
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========
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- Environment Setup
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- Configurations
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- Execute
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Environment Setup
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=================
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First, setup the gap_sdk from GreenwavesTechnologies' github repo.
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Follow the README to setup the toolchain and environment.
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https://github.com/GreenWaves-Technologies/gap_sdk/
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Configurations
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==============
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Each gapuino configuration is maintained in a sub-directory and can
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be selected as follow:
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tools/configure.sh gapuino/<subdir>
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Where <subdir> is one of the following:
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nsh
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---
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This is an NSH example that uses the UART connected to FT2232 as
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the console. Default UART settings are 115200, 8N1.
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Execute
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=======
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You may download the ELF to the board by `plpbridge` in gap_sdk.
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Remember to first `cd` to the gap_sdk/ and `source sourceme.sh`, so
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that you have the $GAP_SDK_HOME environment varible.
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Use the following command to download and run the ELF through JTAG:
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$GAP_SDK_HOME/install/workstation/bin/plpbridge \
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--cable=ftdi@digilent --boot-mode=jtag --chip=gap \
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--binary=nuttx \
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load ioloop reqloop start wait
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As for debugging, the following command download the ELF and opens
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a gdbserver on port 1234:
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$GAP_SDK_HOME/install/workstation/bin/plpbridge \
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--cable=ftdi@digilent --boot-mode=jtag --chip=gap \
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--binary=nuttx \
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load ioloop gdb wait
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And then launch the gdb on another terminal:
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riscv32-unknown-elf-gdb nuttx
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...
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(gdb) target remote :1234
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Remote debugging using :1234
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IRQ_U_Vector_Base () at chip/startup_gap8.S:293
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293 j reset_handler /* 32 */
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(gdb)
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And then enjoy yourself debugging with the CLI gdb :-) |