Understanding the Relationship Between helloworld.py and mt9m114.c in OpenMV

OpenMV Boards
1

I am working with the OpenMV-H7 R1 board, which uses the MT9M114 sensor. I am using this GitHub repository: GitHub - openmv/openmv: OpenMV Camera Module.

How is the helloworld.py file in the \scripts\examples\00-HelloWorld directory related to the mt9m114.c file in the \drivers\sensors directory? Can someone provide a code map and explain the folder structure?

Thanks in advance.

2

Hi, the OpenMV Cam H7 runs MicroPython. The Hello World file is run by the MicroPython VM onboard. The Python functions you call directly invoke C code under the hood that captures images.

3

Can you please explain how c code is invoking from python level function call,
at least for single function call [eg: sensor.reset()] or
any references link to understand the flow from micro python to c

thanks

4

Hi, read this: MicroPython Internals — MicroPython latest documentation

As for understanding the C code. See here: openmv/modules/py_csi.c at master · openmv/openmv · GitHub

Just follow the objects.