M7 camera memory solutions

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chrisPyres66
Posts: 127
Joined: Mon Jul 16, 2018 9:22 am
Location: France

M7 camera memory solutions

Postby chrisPyres66 » Mon Mar 18, 2019 10:04 am

Dear all,

As everybody waiting the new H7 camera, I have M7 camera memory problem with cnn and heap size or heap variable allocation along time.
If I would like to improve this, i am not sure to well understand how it works.

Flash is divided like this
- Bootloader : 32 Ko
- Embedded Flash Drive : 96Ko (Here is the python program virtual flash ?)
- Firmware: 1920Ko

SRAM is divided like this :
- Frame Buffer memory: 384Ko (for camera)
- Critical Coupled Memory: 128Ko (Main, DMA, Stack and heap)

Where
- Main is for python program ?
- DMA for USB and Camera ?
- Stack: 4Ko is a variable lifo register
- Heap: 55Ko for dynamic allocated variable like with CNN, histogram() function and so on

Therefore :
- Can i increase heap size ?
- Can i use SD-Card like SRAM ?
- Would it be usefull to add external SRAM ?

What is the best way to think it ?
Thanks,
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kwagyeman
Posts: 3440
Joined: Sun May 24, 2015 2:10 pm

Re: M7 camera memory solutions

Postby kwagyeman » Mon Mar 18, 2019 11:53 am

Hi, we will ship the H7 this week. Just wait for it. It's going to come fast.
Nyamekye,

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