armdeveloperecosystem/hm01b0-library-for-pico

📷 Capture monochrome images on your Raspberry Pi Pico with a Himax HM01B0 based camera module.

HM01B0 Library for Pico

Capture monochrome images on your Raspberry Pi Pico with a Himax HM01B0 based camera module.

Learn more in the Raspberry Pi "Real-time monochrome camera input on Raspberry Pi Pico" guest blog post.

Hardware

• RP2040 board
  • Raspberry Pi Pico
  • Arducam HM01B0 Monochrome QVGA SPI Camera Module for Raspberry Pi Pico
• SparkFun Micromod
  • SparkFun MicroMod RP2040 Processor
  • SparkFun MicroMod Machine Learning Carrier Board
  • Himax CMOS Imaging Camera - HM01B0

Default Pinout

HM01B0	Raspberry Pi Pico / RP2040
VCC	3V3
SCL	GPIO5
SDA	GPIO4
VSYNC	GPIO6
HREF	GPIO7
PCLK	GPIO8
D0	GPIO9
RESET	-
MCLCK	-
GND	GND

GPIO pins are configurable in examples or API.

Examples

See examples folder.

Cloning

git clone https://github.com/ArmDeveloperEcosystem/hm01b0-library-for-pico.git 

Building

1. Set up the Pico C/C++ SDK
2. Set PICO_SDK_PATH

export PICO_SDK_PATH=/path/to/pico-sdk

3. Create build dir, run cmake and make:

mkdir build
cd build
cmake .. -DPICO_BOARD=pico
make

For SparkFun MicroMod RP2040 use: cmake .. -DPICO_BOARD=sparkfun_micromod

4. Copy example .uf2 to Pico when in BOOT mode.

License

MIT

Acknowledgements

The TinyUSB library is used in the usb_camera example.

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Disclaimer: This is not an official Arm product.

hm01b0-library-for-pico's Issues

Is there a way to set auto exposure off?

Thanks for this excellent library. I am wondering if there is a way to turn off auto exposure. I see there is a line in main.c to adjust exposure integration time, but per the spec sheet the default state is to have autoexposure on. Is that something that can be turned off with this library?