ChibiOS Free Embedded RTOS

I am trying to do some image processing on STM32F4 and I'm having some problems with the RGB565 to grayscale conversion..

When I run the following code I get the regular image as can be seen in the attached picture and all the colors are as they should.


uint16_t rgb565Img[19200];
uint16 ...

I was planning on doing a comparison between ChibiOS and FreeRTOS and I noticed that FreeRTOS has an exception to the GPL license:

Clause 2:
FreeRTOS may not be used for any competitive or comparative purpose, including
the publication of any form of run time or compile time metric, without the ...

The connection with the 50MHz signal generated on MCO1 from PLL was not good enough since it could not hold a stable connection speed, I'm assuming it generates too much jitter. It was solved by using a 50 MHz external crystal.

When I configure the LAN8720A chip to work in 10 Mbit mode it works like a charm without any packet loss.

After all it was a clock problem, you can't use the MCO2 for some reason because it can't generate a good enough clock for the PHY. So now I have configured the MCO1 to generate a 50 MHz clock ...

Any suggestions on how/where to start debugging this? I'm thinking that it's some kind setting in lwipopts.h but I might be wrong.

Hello,

I'm using lwIP in a project to stream video from an ov7725 camera module over ethernet. However, sending the images over ethernet was really slow so I checked the connection and I can see that I'm losing about 50% of all the packets by just pinging the device.

I set up the web server demo ...

I changed to the ov7725 camera instead and it works like a charm. However, the LWIP has huge packet loss when I'm sending the pictures since so when I try to display the images it's super slow, not even 1 fps.

I configured the camera to output RGB565 data instead in the format R[4:0], G[5:3], G[2:0], B[4:0] and made a simple application that connects to the device and receives the data and converts it to RGB888.

for (int i = 0;i < 320;i++)
{
for (int j = 0;j < 120;j++)
{
int pos = i * 2 + j * 320 ...

In the datasheet for the module it says that the HSYNC and VSYNC pins are both active high. However, when I looked at the oscilloscope on both HSYNC and VSYNC pins they were never high at the same time. I changed the HREF be active low in the DCMI configuration and configured the camera to output a ...

Should be in ov5642_TransferConfig, accidently pasted wrong code for that for loop.. Problem still remains!