Deviation for Devo F4?

Since Deviation runs on Linux with an X display, the port isn't completely out of the question. But the timing involved in talking to the RF chips make me think this may run into the same timing issues that keep the RPi from working with some of the smart LEDs.

You might be interested in the last few posts on www.deviationtx.com/forum/7-development/...om-transmitter-board .

Hi,
I'm back, and I will rework on the deviation for F7 and F4. but my F7 has more memory (the same like devo10) and I'm trying to build a devoF7_plus folder, but the version 5 is so different. I have the version 4 and I can understand how I can set up my version.
the functions will be the same for F7, F4, and F7plus(with more memory) and F4plus. the only different will be the memory and the filesystem.

I have built support for many types of SPI flash, it only works for my 4-in-1 module but there is no reason this can't be decoupled and used for flash soldered instead of original. It autodetects the type and uses appropriate parameters.

Glad you guys are back working on this, because I can't. I still can't use my F4 really without issues because of the devo.fs thing. What changes will be required? Soldering addidional SPI flash won't be a problem, also I was thinking about victzh's solution with his 4in1. Which option is the better one?

I'm ussing sst25vf032b.

I have some functions for a OSD with telemetry that in the future can be use with ltm telemetry or others.
but first I must build the firmware for my TX.

about the memory can be a good idea to use a memory with the 4/1 module.

I can't make promises about my 4-in-1 timeline - I'm not producing it. I only made a couple to be able to program them, now design files are sent to the guy who produces all these 4-in-1 versions on Taobao and Banggood. He's going to make it but there is still no sample from him.

What we can do is decouple 4-in-1 handling code and SPI flash autodetect - it will allow to use any supported (there are half a dozen popular/cheap ones included) SPI flashes, not only SST25VF025B which is obsolete and becoming hard to find.

Also in the case of F12 we can build universal version which supports all variants - original flash with DevoFS, soldered larger flash with FAT, larger flash on 4-in-1 module - automatically. The only difference would be the installation procedure - do you need to deal with DevoFS or just treat it as regular Devo, but the build will be universal.

Unfortunately for F4/F7 with their smaller MCU flash this code will not fit in it - so there are going to be 2 builds - DevoFS and FAT.

So perhaps a MCU replacement would be of some use? Like U7e? Btw, just to clarify the SPI upgrade is sort of plug and play, isn't it? Pinout and physical size is the same? Just replace the 64KB stock PCT25VF512A?

Interesting, that's what I was looking for. But as Victzh stated, there might be better chips for a replacement - Victzh, what do you recommend? Is there any need of upgrading the F4 MCU? If yes, maybe a STM32F103(RCT/RET)6?

It is working on my devo, but there there are some problem with the function that erase the screen.
Can you give me the set up form devo 4MB?
I will fix this function

This is the problem

Hello

I'm new and I apologize for my immature English.

I have a F4, updated with the Nightly Builds of 07/04/17.

I'm going to replace the memory to switch from the current 64K to something more!

Which recommended memory chips?
UPCT25VF512A (512 Kbit); SST25VF032B (32 Mbps) compatible?

After replacing the memory I will need a specific firmware or can I use the current, just copying the files (unpacked from devo.fs) in the USB memory directly?

If I proceed to the replacement, send photos etc.

Thank you and congratulations to the wonderful work you are doing!

Thank you for the reply!

This is good?

www.ebay.com/itm/1pcs-SST25VF032B-SST-25...-Flash-/401071557388

OK! Buy two of these!

I also want to buy a new one such as the one currently on the I F4!

To have a chance to restore it in case I destroy it!

Can you tell me that chip is? Thank you