Serial out for LRS boxes

hexfet wrote: Thanks for testing! Are you using the nightly build or the reduce_latency test build?

Planning to work on the configuration settings when the test unit arrives. It has started the trip.

I'm using the nightly. I wasn't aware the reduced latency test build wasn't incorporated. I don't sense any latency when flying, but maybe I'm just not sensitive to it. I'm working on a tutorial video for setting this up and I'm directing people to the nightly page.

Directing folks to the nightly build is best. If they're interested enough to get on the forum they'll find the rest. While the test build has slightly less latency I don't think it's a difference that would be noticed in flying.

hexfet wrote: Directing folks to the nightly build is best. If they're interested enough to get on the forum they'll find the rest. While the test build has slightly less latency I don't think it's a difference that would be noticed in flying.

Sounds good! Have you had a chance to look at the Lua scripts? I think the only technical hurdle here is dynamically building the CRSF settings menu. The Lua script seems to load the settings in real time as it contacts the RX. The TX should be easier as the setting options can be requested directly from the module.

Will R9 work on the new SBUS protocol or do we need something specific for that? I may buy an R9 module to test on the T8SG Plus.

The Frsky website says the R9M only supports PPM and PXX. I've coded the PXX protocol but won't be able to test for several weeks.

Nice job Hexfet !
Possibly also this can be tested by using a flight controller, if it is in the nightlies I might hook up tonight see if it runs on betaflight receiver monitor.

(Still I hope some of the RF masters here manage to hook up Semtech module over the SPI bus)

Pretty sure there's no PXX in betaflight as it's a protocol between tx and tx radio. Won't be in the nightlies until complete. Still untested Need to change the data transfer to DMA and add s.port support. It's branch protocol_pxx in my repo.

hexfet wrote: The Frsky website says the R9M only supports PPM and PXX. I've coded the PXX protocol but won't be able to test for several weeks.

I'm not familiar with PXX. Does it have any latency issues like PPM?

Yes you are right, pxx is not available. As Frsky is dumping, I couldn't resist, I have an LRS coming my way.....

hexfet wrote: Thanks for the testing. It wouldn't surprise me if there's a small resistance between PA9 and the TX pin for short/ESD protection. If it's more than a couple hundred ohms then it might be the wrong pin. Can you measure with an ohmmeter? Compare to the resistance between PA8 and the trainer jack.

The oscilloscope should show a short burst of 400 kbps data every 4 ms. At 400k one bit time is 2.5 microseconds, so the 25 byte packet will only last 625 microseconds.

Update on Devo12: I tested the signal on the TX pin header with a better scope. As hexfet suspected there is no signal at all with CRSF. The voltage on the TX pin is about 3.4 V (constant) for protocol SBUS (and others) and switches to no signal when selecting protocol CRSF (the signal doesnt change, regardless if the scope is connect to TX or not). So something changes, when CRSF is selected, but the correct signal is not there.

So could you please check, if the CRSF signal is sent to devo12 TX Pin, or point out, where the output destination is set in the source code. I tested with the nightly build e801244.

Thx for any hint.

The difference in the devo12 code adjusts the PWM output pin to PA8 (_PWM_PIN in target/devo12/devo12_ports.h). The 12 shares the serial port pin definitions with the other devos (_USART_* in target/common/devo/uart.c). It uses the same serial port code too.

There's also no signal on the RX pin header?

If the SBUS and TESTSER protocols also don't show any output then it's unlikely the problem is specific to CRSF. Is the test done with a simple model that should produce a signal for the first four channels?

It is necessary to click Re-Init after changing the protocol to get the serial protocols started.

Hello! The new version of the TBS agent can now change the settings of the micro TX module. It is very good! Now you can fully use the module without having open TX radio. Although it is not entirely clear how to upgrade the firmware of the receiver.

That's good news! Do you have a link to the new version. The file here hasn't been updated.

hexfet wrote: That's good news! Do you have a link to the new version. The file here hasn't been updated.

Here is the link. I do not have a module, so I can not check. I follow this because I want to buy a micro TX module for my t8sg v2 plus radio.

https://www.team-blacksheep.com/products/prod:agentxhttps://www.team-blacksheep.com/products/prod:agentx

Thanks. I tested with the full size Crossfire module. It works fine for configuring the TX, but didn't seem to have any method to configure the RX. Either I was doing something wrong, or hopefully it's something they'll add soon.

Hi guys.

Got T8SG v2+ here.

Was wondering if there is also support for openLRS?

Orange UHF or the wolfbox


Thanks

Yes it can be used but need to learn more about openlrs to know if any changes would improve support. What are the best resources for openlrs info?

From what I've seen so far PPM should work without any changes required. A hardware mod may or may not be needed to use SBUS, and telemetry is possible but need to learn more to see what's required. I'll look into it.

www.itluxembourg.lu/site/ultimate-lrs-rssi/

Ive just ordered the wolfbox.

Another question, can the Transmitter do internal RF=off with PPM output at the back?

SBUS would be great option too. Since PPM has bigger delay

Yes PPM, sbus, pxx protocols can be used to external
Modules internal modules are than off.

For DIY a very good contender is qczek qlrs system using lora

Fernandez wrote: Yes PPM, sbus, pxx protocols can be used to external
Modules internal modules are than off.

For DIY a very good contender is qczek qlrs system using lora

Hi

Do I still need to flash nightly builds to get PPM and SBUS out? I have NOT flashed mine since I got it. Only mod I have done is the MP3 voice module.

How to know if internal RF module is OFF?