Maix Bit 1 - SiPeed Risc-V 64bit SBC

Happy Friday… And, how I miss my beloved son… God bless… Today, I’ll talk about Maix Bit board.

1. Introduction

1.1 lsusb

......
Bus 009 Device 112: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
......

1.2 Hardware Wiki

Detailed specification about Maix Bit board can be found on MaixBit Wiki.

1.3 Software

And, I am using MaixPy-v1 (Please refer to Introduction of MaixPy-v1).

2. Kendryte Toolchain Preparation

You first need to build the executable toolchains out from the provided Kendryte RISC-V GNU Compiler Toolchain.

In order to successfully build out the Kendryte toolchain, please handle the same ERROR in the following four files under riscv-binutils-gdb:

• ./riscv-binutils-gdb/readline/complete.c
• ./riscv-binutils-gdb/readline/display.c
• ./riscv-binutils-gdb/readline/histfile.c
• ./riscv-binutils-gdb/readline/mbutil.c

And modify the above 4 files as follows:

• Add

#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE 600
#endif
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
#endif

at the very top for each file.

• Add #include <wchar.h> before line #include <sys/types.h> for each file.

3. Build and Flash maixpy_k210

3.1 To Build - 3 Commands

• python3 project.py --toolchain /opt/toolchains/kendryte/kendryte-toolchain/bin --toolchain-prefix riscv64-unknown-elf- config
• python3 project.py menuconfig
• python3 project.py build

3.2 To Flash - Key Points

• Find a good USB Type-C cable
• You may need to flash at a lower baud rate.
• Two commands:
  • python3 project.py flash -B dan -b 1500000 -p /dev/ttyUSB0 -t
  • In my case: kflash -p /dev/ttyUSB0 -b 9600 -t ./build/maixpy.bin

4. Camera and LCD

OV2640	Camera Live Stream with LCD Display	FPS at The End

5. SPI Test

My Logic Analyzer	Driver sigrok-firmware-fx2lafw

SPI Signal Analysis GUI - PulseView Adding SPI Decoder

SPI Signal Analysis GUI - PulseView Logic Analyzer