Search found 9 matches

by ssurneed
Tue Jan 15, 2019 1:21 pm
Forum: Technical Discussion
Topic: openmv2
Replies: 1
Views: 1420

openmv2

I use the sensor ov7740 and f429 (and h743 (openmv4)).
I compiled your project under f429 (openmv2).
But I do not get an interrupt HAL_DCMI_FrameEventCallback().
The h743 have this interrupt.

What could be the problem?
by ssurneed
Fri Oct 05, 2018 6:11 am
Forum: Technical Discussion
Topic: How to convert YUV422 to jpeg on openMV?
Replies: 2
Views: 648

How to convert YUV422 to jpeg on openMV?

I want to use bool jpeg_compress(image_t *src, image_t *dst, int quality, bool realloc) on STM32H743.
but, can I put in *src in YUV422 format?

I need compress YUV422 to jpeg.
by ssurneed
Thu Aug 23, 2018 9:12 am
Forum: Technical Discussion
Topic: How to implement new sensor to openMV?
Replies: 6
Views: 1058

Re: How to implement new sensor to openMV?

kwagyeman wrote:
Wed Aug 22, 2018 10:46 pm
Um that value is abused. It means a lot of different things in different contexts.
Ok, I got it
by ssurneed
Wed Aug 22, 2018 4:06 am
Forum: Technical Discussion
Topic: How to implement new sensor to openMV?
Replies: 6
Views: 1058

Re: How to implement new sensor to openMV?

Yeah, that method passes null to snapshot. Just return if called with null. // Fix the BPP switch (sensor->pixformat) { case PIXFORMAT_GRAYSCALE: MAIN_FB()->bpp = 1; break; case PIXFORMAT_YUV422: case PIXFORMAT_RGB565: MAIN_FB()->bpp = 2; break; case PIXFORMAT_BAYER: MAIN_FB()->bpp = 3; break; case...
by ssurneed
Mon Aug 20, 2018 3:41 am
Forum: Technical Discussion
Topic: How to implement new sensor to openMV?
Replies: 6
Views: 1058

Re: How to implement new sensor to openMV?

Hi kwagyeman
I found a problem, this function calls sensor_snapshot with the NULL parameter
sensor.skip_frames(time = 2000) # Wait for settings take effect.
by ssurneed
Fri Aug 17, 2018 8:30 am
Forum: Technical Discussion
Topic: How to implement new sensor to openMV?
Replies: 6
Views: 1058

How to implement new sensor to openMV?

I want to add a new sensor in OpenMV Can you tell more about the structures image_t and framebuffer_t ?? I added some code to the function int sensor_snapshot(sensor_t *sensor, image_t *image) and I hoped to get a black picture uint8_t *src = MAIN_FB()->pixels; for (uint32_t h = 1; h < MAIN_FB()->h ...
by ssurneed
Mon Jul 02, 2018 5:00 pm
Forum: Technical Discussion
Topic: How to make debug build a OpenMV ?
Replies: 2
Views: 741

Re: How to make debug build a OpenMV ?

I'am on the M7 build (OPENMV3). I did reduce OMV_HEAP_SIZE 55K to 50K and maked a build is OK.

Yes, my goal is to remove everything that is unnecessary for me.
by ssurneed
Sat Jun 30, 2018 3:33 am
Forum: Technical Discussion
Topic: How to make debug build a OpenMV ?
Replies: 2
Views: 741

How to make debug build a OpenMV ?

If I make a build with DEBUG=1 then I have build errors: c:/program files (x86)/gnu tools arm embedded/7 2017-q4-major/bin/../lib/gcc/arm-none-eabi/7.2.1/../../../../arm-none-eabi/bin/ld.exe: c:/Projects/TrueStudio/openmv2/src/../firmware/OPENMV3/firmware.elf section `._stack' will not fit in region...
by ssurneed
Thu Jun 14, 2018 6:26 am
Forum: Technical Discussion
Topic: How can I build a OpenMV in the IAR?
Replies: 1
Views: 499

How can I build a OpenMV in the IAR?

Is this possible?
I want to delete a microphyton from the OpenMV

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