Introduction
- Nuvoton NUC980 is a 300 Mhz ARM processor.
- Has a host of peripherals onboard: 64/128 MB RAM, 2 Ethernets, 2 CAN masters, some 8 UARTS, SPI, I2C , etc
- It comes with Linux, uboot and a buildroot system for generating system assets.
- A popular board is the NUC980 IIOT board
- The major advantage is that this processor is available for a low cost of 5$ (2021)
Intention- Try and see how fast the system is
- Performance of python etc.
- Given that it was a low RAM system, how convenient would it be write a program in python.
- Maybe interface a device say a Display.
Experiments- The tar ball that Nuvoton provides is an approx 8 GB virtual machine running Ubuntu 18.04.
- One can run this virtual image on an VM emulator.
- The recommended is VMWARE but it ran comfortably even in an Oracle VirtualBox VME.
- After logging into the VM and on running a make nuc980_defconfig it generated the uboot, linux and other assets.
- On Linux one can use nuwriter to flash the SPINAND.
- A run.ini file is needed as configuration to the nuwriter
- It specifies destination of writing: SPINAND flash, SDCARD, RAM, etc.
- Each destination has section for which the relevant files to be flashed has to be provided.
- One problem that was noticed was that even though the flash writing progressed successfully, the system would display a few bytes as follows:
NUC980 IBR 20180813 Boot from SPI-NANDNand boot! #Sfinish SPI dow&*
Python support- Idea was to try writing a user space driver for an SPI device like the ST7735 in python
- A python driver for Pimoroni displays can be found.
- It was modified to drive a color display to show time.
- Python took a long time loading but after it was loaded in RAM, it was fast enough to update the display
- Also FB-TFT could have been a good way of interfacing the display
- Below are 2 sample videos.
- Nuvoton NUC980 is a 300 Mhz ARM processor.
- Has a host of peripherals onboard: 64/128 MB RAM, 2 Ethernets, 2 CAN masters, some 8 UARTS, SPI, I2C , etc
- It comes with Linux, uboot and a buildroot system for generating system assets.
- A popular board is the NUC980 IIOT board
- The major advantage is that this processor is available for a low cost of 5$ (2021)
- Try and see how fast the system is
- Performance of python etc.
- Given that it was a low RAM system, how convenient would it be write a program in python.
- Maybe interface a device say a Display.
Experiments
- The tar ball that Nuvoton provides is an approx 8 GB virtual machine running Ubuntu 18.04.
- One can run this virtual image on an VM emulator.
- The recommended is VMWARE but it ran comfortably even in an Oracle VirtualBox VME.
- After logging into the VM and on running a make nuc980_defconfig it generated the uboot, linux and other assets.
- On Linux one can use nuwriter to flash the SPINAND.
- A run.ini file is needed as configuration to the nuwriter
- It specifies destination of writing: SPINAND flash, SDCARD, RAM, etc.
- Each destination has section for which the relevant files to be flashed has to be provided.
- One problem that was noticed was that even though the flash writing progressed successfully, the system would display a few bytes as follows:
NUC980 IBR 20180813
Boot from SPI-NAND
Nand boot! #S
finish SPI dow&*
Python support
- Idea was to try writing a user space driver for an SPI device like the ST7735 in python
- A python driver for Pimoroni displays can be found.
- It was modified to drive a color display to show time.
- Python took a long time loading but after it was loaded in RAM, it was fast enough to update the display
- Also FB-TFT could have been a good way of interfacing the display
- Below are 2 sample videos.
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