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Frsky compatibility

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23 Jun 2014 13:31 - 24 Jun 2014 10:10 #24190 by Fernandez
Replied by Fernandez on topic Frsky compatibility
I have added cc2500 module from Banggood, SKU130026 (The unshielded, amped module), want to test Frsky.

List of pins:
1-Gnd, 2-Vcc, 3-SI, 4-SCLK, 5-SO, 6-GDO2, 7-GDO0, 8-Csn, 9-TxEn, 10-RxEn

However I read to enable telemtry;
connect PA_Enable to GDO0 (is it shortcut to the TX-En pin on this module?)
connect LNA_EN to GDO2(is it shortcut to the RX_En pin on this module?)

I have now both Tx-En and Rx-En both conneced to 3v3. GDO0 and GDO2 are n.c. The CC2500 is detected but can't bind any experiences with this module and Frsky, anybody has it working?
Last edit: 24 Jun 2014 10:10 by Fernandez. Reason: pins corrected

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23 Jun 2014 14:43 #24192 by Fernandez
Replied by Fernandez on topic Frsky compatibility
Small update the module works, have put RX-En to gnd TX-EN to 3v3 Coarse and fine freq adjust at zero.

Set pwr to lowest setting 100u W, I can shift over wide area it continue to work:
Freq Coarse -60, still works but jittery, dropouts.
Freq Coarse/Fine, at zero, works no jitter
Freq Coarse +128, still works no jitter

Is it normal ?

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23 Jun 2014 14:44 #24193 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
Did you connect PA_EN and LNA_EN both to Vcc as you said, or to VCC and GND as the pins say? I don't recall how the module is wired, but connecting LNA_EN to Vcc is unlikely to work very well. This module also requires an antenna to be properly attached. If it is not, it won't work well at all.
Also, what version of Deviation are you running? You need to be running a current nightly build, but I made a big turnin yesterday to switch to a newer version of libopencm3 and I haven't tested it on any hardware as yet. Possibly it doesn't work as intended.

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23 Jun 2014 14:46 #24194 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
You should not need to change the course/fine adjustments. They were only for module debugging.

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23 Jun 2014 14:50 #24195 by Fernandez
Replied by Fernandez on topic Frsky compatibility
I found it Coarse and Fine labels are likely exchanged. (devo 7e)

Using Fine adjust settings for this module, When out of sync, I can get it in lock at -21, then other side at +49, is it then the right assumption that in the middle +14 is the right center freq?

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23 Jun 2014 17:13 #24196 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
no. it means you should leave it at 0 and not change it. As I said, there is no reason to modify these values.

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23 Jun 2014 20:16 #24199 by Fernandez
Replied by Fernandez on topic Frsky compatibility
Ok Clear, indeed when leaving freq adjust setting at zero I can confirm the unshielded banggood module works our of the box, just to inform zero is not in the center.

Not range tested yet. Currently
Tx-EN to 3v3
Rx-En to Gnd.
Can you confirm how to setup for telemetry, that will be next test.

Could the set failsave from TX be added is very handy feature!

Thumps up for deviation!! Get rid of the PPM, straight digital, it feels already more smooth and reactive than my Sanwa + Frsky DHT-U.

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23 Jun 2014 20:42 - 24 Jun 2014 22:25 #24200 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
you cannot use telemetry unless you wire up the module as I specified. specifically you need to follow the table here:
bitbucket.org/PhracturedBlue/deviation/wiki/ModuleList
for the 'CC2500 Skyartec' module.
connect pin 6 to pin 10
connect pin 7 to pin 9

the pins are color-coded in the image here:
bitbucket.org/PhracturedBlue/deviation/w...showasparticleid1977

The note about '4.0.1 and earlier' DOES NOT APPLY to you, since you are running the nightly builds.

Edit: Fixed pin connections
Last edit: 24 Jun 2014 22:25 by PhracturedBlue.

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24 Jun 2014 02:33 #24204 by SeByDocKy
Replied by SeByDocKy on topic Frsky compatibility
Stupid question. When plugged into the MM, is telemetry working by default ? (I don't have yet any FrSky RX but I want to buy one soon .. and I don't know which model should be compatible with DeviationTX (a 4CH or 8CH))

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24 Jun 2014 03:39 - 24 Jun 2014 03:40 #24205 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
yes telemetry will just work when using a multimodule.
I believe all frsky transmitters will be compatible with Deviation, though the newest ones will need to run in compatibility mode for telemetry until I add S.Port support.
Last edit: 24 Jun 2014 03:40 by PhracturedBlue.

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24 Jun 2014 04:00 #24206 by SeByDocKy
Replied by SeByDocKy on topic Frsky compatibility

PhracturedBlue wrote: yes telemetry will just work when using a multimodule.
I believe all frsky transmitters will be compatible with Deviation, though the newest ones will need to run in compatibility mode for telemetry until I add S.Port support.


Thanks PB for my clarification :)

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24 Jun 2014 10:09 - 24 Jun 2014 22:24 #24210 by Fernandez
Replied by Fernandez on topic Frsky compatibility
cc2500 module from Banggood, SKU130026 (The unshielded, amped module)
www.banggood.com/CC2500-PCBA-2_4GHz-Wire...Module-p-922598.html

Pinout (labels printed on the module)
1-Gnd, 2-Vcc, 3-SI, 4-SCLK, 5-SO, 6-GDO2, 7-GDO0, 8-Csn, 9-TxEn, 10-RxEn

It looks idendtical to skyartec module:
bitbucket.org/PhracturedBlue/deviation/wiki/ModuleList
I beleive pins are wrong coloured / displayed in the skyartec image.

I linked also the following pins;
Pin6 GDO2 - pin10 RxEn
Pin7 GDO0 - Pin9 TxEn

Uploaded the nightly 22nd of june, no telemetry receiver voltage, RSSI, working yet.
Last edit: 24 Jun 2014 22:24 by PhracturedBlue.

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24 Jun 2014 21:32 #24226 by IMback!
Replied by IMback! on topic Frsky compatibility
most likely it is the same module. skyartec is known to sell the module seperate. Bangood buys helis from skyartec its probubly easyest just to source the module from there aswell

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24 Jun 2014 22:23 - 24 Jun 2014 22:29 #24227 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
I just double checked. You said:

Fernandez wrote: List of pins:
1-Gnd, 2-Vcc, 3-SI, 4-SCLK, 5-SO, 6-GDO2, 7-GDO0, 8-Csn, 9-TxEn, 10-RxEn

But the pic on the Bangood website says:

1-Vcc 2-SI 3-SCLK 4-SO 5-GDO2 6-GND 7-GDOo 8-CSn 9->PA_EN 10-LNA_EN

The bangood connections match the connections I have listed on the wiki. I assume your module looks like this as you said:
bitbucket.org/PhracturedBlue/deviation/w...showasparticleid1977

If so, pin 5 connects to pin 10 and pin 7 connects to pin 9 (there was a typo above, but the Wiki is labeled properly). The colors listed in this image correctly show these connections as well.

If your module doesn't look like that, then please post an image of what your module DOES look like.
Last edit: 24 Jun 2014 22:29 by PhracturedBlue.

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25 Jun 2014 09:04 #24237 by Fernandez
Replied by Fernandez on topic Frsky compatibility
Attached the images of the module used.
Attachments:

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25 Jun 2014 14:00 #24242 by PhracturedBlue
Replied by PhracturedBlue on topic Frsky compatibility
That is not the module shown in banggood's page. On the top board there is a device attached between pins 2 and 3 on your module that isn't in their picture. On the ottom board, the pin order is different. This is important because if someone bought it to plug into a MultiModule, they'd be very disappointed.

I would recommend posting a review detailing the differences on their site so noone is misled.

On the module you have, the wiring looks ok.

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25 Jun 2014 14:56 #24243 by Fernandez
Replied by Fernandez on topic Frsky compatibility
Indeed you are right!
Easy check would be, the rf side antenna is left versus on the right.

Anyway I can confirm the module works, it has been ordered BG around end of may?. Maybe there is different batches shipped, old/new?

Let us know when there is progress on telemetry and failsave from Tx, will then do some full range field testing in my swift.

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25 Jun 2014 15:18 - 25 Jun 2014 15:27 #24244 by aMax
Replied by aMax on topic Frsky compatibility
Yes, you have to pay attention, BG sells what is in stock and not what they advertise. Happend three times with my NRF modul...:-(

Edit:
To their honor, at last they refund.
Devo7e, TaranisQ X7, R9M , 4in1 MM, Futaba FC18plusV3.2 & DFT/FLD-02
Last edit: 25 Jun 2014 15:27 by aMax.

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17 Jul 2014 23:46 #24663 by shadow
Replied by shadow on topic Frsky compatibility
ok how do you bind the frsky rx to this module?

I have a x8r and a D4r-II

I have wired according to the CC2500 with the adjustments for the different pinout. as with Fernandez

Thanks

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18 Jul 2014 04:40 - 18 Jul 2014 04:42 #24666 by phantom8
Replied by phantom8 on topic Frsky compatibility

shadow wrote: ok how do you bind the frsky rx to this module?

I have a x8r and a D4r-II

I have wired according to the CC2500 with the adjustments for the different pinout. as with Fernandez

Thanks


I've tested with D4R-II. For unknown reason, I couldn't bind with a fixed ID. As soon as I use auto-id, it binds and works fine afterwards. However, receiver safe mode setting doesn't work. Accordinly to the manual, the receiver green led will blink twice when I press the f/s button, but it never blinks and it doesn't store safe mode settings. Not sure if this has anything to do with Deviation. Maybe my D4R-II is at fault.
Last edit: 18 Jul 2014 04:42 by phantom8.

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