Found it ,

Was not the RX Buffer , I was trying to get the circular buffer size into a byte variable
which 255 is the max .

Jeez, that was kinda stupid

Thanks again

Reagrds

Hi chipfryer27, Thanks for your reply I am using a circular buffer, have set number of bytes to 260 have also tested the buffer it can hold 260 bytes so buffer is not the issue . I am still not 100% sure it is the RX buffer :idea: maybe I try Uart in software mode that should eliminate the hardware ...

Hello I am trying to send a 256Byte serial data to write 1 page of W25 flash but is seems that the max number of bytes I can receive is 255, I think is the Uart RX buffer Size that is limiting this , is there a way to increase the RX buffer size ? Tried the following but dose not work HAL_UART_DeIni...

Hello here is another update I was able to make , Write Data Bytes to work I have to admit it was from my side , I was putting write control =1 before entering the loop it needed to be in the loop and executed every time before a byte is written. That is why was not working :? Can move this to gener...

Hi medelec35

Thanks for your prompt reply
I have found a way around this but good to know is beings looked into.

Thanks Again

Regards

Hi medelec35 ,

Can not share my work but is very simple to reproduce the problem.

have attached the a sample .

Update :) I have replaced the W25 flash to 128Mb, shortened the wires as possible and added a 0.1uf decupling capacitor . Now I see some improvement, Write Data Array works properly if I start writing from address 1 Address 0 remains 00 for some reason can not write to it . Also this works only in S...

Hi so here are the results

I have set the prescaler to 16 , 32 and 64 result still the same
I also tried to lower the speed from the RCC register but still no joy .

Delays seems to be perfect I made a 50ms Blinking on C13

Hi BenR

Thanks for your reply

I will do that today and let you know

Thanks again

Hello

Any news on this Bug please ?

I am stuck , can not continue the project without this