skyartec compatibility

Hexperience
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03 May 2013 21:19 #9517 by Hexperience

Replied by Hexperience on topic skyartec compatibility

Hi guys, I just got two more "cc2500" chips in the mail, so I have a 3 flavors now.

Where do we stand on Skyartec and Frsky? I know Frsky has been put on the back burner for the moment, but is the skyartec protocol working ok? I don't have anything to test it with at the moment.

Cheers

There are 10 types of people in this world. Those that understand binary and those that don't.

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stein@office-center.no
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27 May 2013 21:02 #10349 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

Hi

I also now have three flavours. Even got an "original" skyartec. As I will only fly the skyartec - is it correct to assume that the "original" skyartec module will be the best?

I'll hand my Devo-10 to my soldering specialist for installation soon. Hope for a recommandation!!

Thanks...
Stein

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stein@office-center.no
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29 Jun 2013 15:35 - 29 Jun 2013 15:36 #11567 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI

My professional soldering friend has got the modules - as I only am looking for Skyartec binding i will use the skyartec module.

But my friend opened the radio (Devo 10) and tells med that reality do not fit the map as in the moduleinstallation pdf.

Could You point out in the image where to connect the new module?

Thanks..
Stein

Last edit: 29 Jun 2013 15:36 by stein@office-center.no. Reason: Forgot ...

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vlad_vy
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29 Jun 2013 15:58 - 29 Jun 2013 16:05 #11569 by vlad_vy

Replied by vlad_vy on topic skyartec compatibility

Devo 10
The same order of pins - NRESET, TMS, TCK, GND, VDD. (under RUDD and ELEV)

Last edit: 29 Jun 2013 16:05 by vlad_vy.

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stein@office-center.no
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29 Jun 2013 17:43 #11581 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

So if i use the Skyartec module:

Skyartec - Devo 10
Pin 6 - Cyrf module pin 3

Pin 1,9,10 - Devo PCB PIN VDD

Pin 8 - Devo PCB PIN TMS+TCK (Both)

Pin 3 - Cyrf module pin 2

Pin 2 - Cyrf module pin 4

Pin 4 - Cyrf module pin 5

I think this will be correct - or have I misunderstood the table?

Thanks..
Stein

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vlad_vy
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29 Jun 2013 18:42 - 29 Jun 2013 18:45 #11583 by vlad_vy

Replied by vlad_vy on topic skyartec compatibility

Pin 8 - Devo PCB PIN TMS or TCK

You need to find the ‘[modules]’ section and set the ‘enable-a7105’ or ‘enable-cc2500’ as
follows:
• Using TMS: ‘A13’
• Using TCK: ‘A14’
Also make sure the corresponding ‘has_pa-a7105’ or ‘has_pa-cc2500’ is set to ‘1’

By default TMS pin used for A7105, TCK pin used for CC2500.

Last edit: 29 Jun 2013 18:45 by vlad_vy.

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stein@office-center.no
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29 Jun 2013 19:01 #11584 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

Thanks..

What about the antenna - anything to do there?

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stein@office-center.no
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30 Jun 2013 16:09 #11641 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI

We now have done the soldering as it should be. The radio battery went empty so we could not make the testing, som we put everything nicely back together.

The tx.ini files look like this on my computer:

[modules]
; enable-cyrf6936 = B12
; has_pa-cyrf6936 = 1
; enable-a7105 = A13
; has_pa-a7105 = 1
; enable-cc2500 = A14
; has_pa-cc2500 = 1

I guess I remove the ; and space as follows:

[modules]
; enable-cyrf6936 = B12
; has_pa-cyrf6936 = 1
; enable-a7105 = A13
; has_pa-a7105 = 1
enable-cc2500 = A14
has_pa-cc2500 = 1

Right?(As we soldered pin 8 to TCK)

Charging my radio battery at the moment - cant wait....

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stein@office-center.no
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30 Jun 2013 21:26 #11650 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI guys..

I've just got the Skyartec mocule installed - and to You - maybe no surprise - but to me it was - IT WORKED!!!!

Have just made all the controls go in the right direction - had to reverse the Elevator - but I have to adjust the radio because i get to much action on the servos. I'll try more another day - work tomorrow.

But bound to both my Skyartec Nano Cp and Skyartec X3V.

I'll test more and if this is interesting I'll post some results here. OK?

Thanks to You all
Stein

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stein@office-center.no
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02 Jul 2013 21:04 - 02 Jul 2013 21:04 #11777 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI

Tested the radio with the skyartec module and Devo 10 today - and everything works perfect for me, exept distance. I walked about 50-60 meters when i lost the signal. Bound the heli to the Skyartec Nasa701 radio and I walked 200 meters away - still having signal - did not test any further - far enough for a 300 size heli.

For the Skyartec Nano 50-60 meters is quite acceptable but for the Skyartec X3V i would like to have more distance.

Could it be as simple as connecting an extra antenna - drill a hole in the Devo 10 and fit a second antenna connecting it to the antenna port on the skyartec module?

Any suggestions? Thoughs?

Thanks..

Stein

Last edit: 02 Jul 2013 21:04 by stein@office-center.no. Reason: misspelled

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victzh
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02 Jul 2013 21:09 #11778 by victzh

Replied by victzh on topic skyartec compatibility

How does your tx.ini look like? Did you enable PA for your module?

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RandMental
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02 Jul 2013 21:11 - 02 Jul 2013 21:17 #11779 by RandMental

Replied by RandMental on topic skyartec compatibility

stein@office-center.no wrote:
Could it be as simple as connecting an extra antenna - drill a hole in the Devo 10 and fit a second antenna connecting it to the antenna port on the skyartec module?

Stein

Hi Stein,

See my mods on the Devo8s, you could of course do something similar, except you have less space with AUX4/5 which is where I fitted the external antennas.

www.deviationtx.com/forum/6-general-disc...new-tx-modules#11340

Last edit: 02 Jul 2013 21:17 by RandMental.

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stein@office-center.no
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02 Jul 2013 21:18 #11780 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

What distance have You got with antenna - on Skyartec?

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stein@office-center.no
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02 Jul 2013 21:20 #11781 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

[modules]
enable-cyrf6936=B12
has_pa-cyrf6936=1
enable-a7105=None
has_pa-a7105=0
enable-cc2500=A14
has_pa-cc2500=1

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RandMental
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02 Jul 2013 21:28 - 02 Jul 2013 21:38 #11782 by RandMental

Replied by RandMental on topic skyartec compatibility

stein@office-center.no wrote: What distance have You got with antenna - on Skyartec?

I have not tested yet, but then also I have used the square CC2500+PA module and not the Skyartec one. (I did confirm with a Spectrum analyser that I do get upto +/-20dBm when set to max 150mW, and flown the V911 and Hubsan, but nothing further than 15 metres.)

What antenna do you have on the Skyartec module? Mine came without an antenna like this below. It has a 20dBm PA, with a proper external antenna you should get you 200-300 metres as well.

Last edit: 02 Jul 2013 21:38 by RandMental.

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stein@office-center.no
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02 Jul 2013 21:42 #11783 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI

Same module i got. But i also bought the two other ones mentioned here at the forum - an there was an antenna in both of them and in one there also was an antenna wire.. It has as little connector to go on the original module but i guess mye electroprofessional friend can manage to cut it off and connect it to the skyartec module.

And i do not use the aux buttons - so i guess i can remove one of them...??

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RandMental
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02 Jul 2013 22:16 #11786 by RandMental

Replied by RandMental on topic skyartec compatibility

That is the module I used. The antenna also looks the same and should work fine with the Skyartec module. When soldering it don't cut the wire shorter, just remove the small connector and solder it to the module. Solder both the outer and inner wires to the respective pads.

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RandMental
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06 Jul 2013 11:44 #12011 by RandMental

Replied by RandMental on topic skyartec compatibility

stein@office-center.no wrote: What distance have You got with antenna - on Skyartec?

Hi Stein

I had my modules confused - I get the same 18-20dBm output from the CYRF and the XL7015 modules, both using external antennas. BUT having check the CC2500 module+PA module for the Skyartec mode, the power is very low and stays the same whatever I do from Deviation side, I guess about 1dBm which could explain your range issues.

I remember SUVSUV had a fix in his repository to fix a power issue on this module, I guess it did not make it into Deviation yet.

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stein@office-center.no
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06 Jul 2013 14:31 #12012 by stein@office-center.no

Replied by stein@office-center.no on topic skyartec compatibility

HI RandMetal..

I looked for SUVSUV's solution but did not find anything.

But do You think this is a software issue or a hardware issue?

I soldered a little wire (same length as the antenna wire on the Nano CP) to the antennaconnection on the skyartec module getting a distance of aprox 60m. If output still low - i guess adding a antenna will not do any difference?

But for now i can fly my Skyartecs - just watch out not getting to far away. Fun software to work with - trying to make the mixer work with different settings according to swithches.

Hope the powerissue will be solved soon - hardware or software.

Thanks again..
Stein

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tx
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06 Jul 2013 16:35 - 06 Jul 2013 16:38 #12014 by tx

Replied by tx on topic skyartec compatibility

The low power output is a software issue, although I guess it could be hardware if your module doesn't have an amplifier. The current code does not set the power output of the CC2500 so it's running at default medium power. The fix is simply to set the power output on the CC2500 to maximum (or whatever you want). It's a simple one line fix in skyartec_init().

Here is a patch for the current deviation code that sets it to maximum power (untested because I don't run deviation). Make sure you have a proper antenna connected because at maximum power with no antenna (or a bad antenna) it could burn up the amplifier.

--- src/protocol/skyartec_cc2500.c.orig	2013-04-04 17:12:08.043004201 -0400
+++ src/protocol/skyartec_cc2500.c	2013-07-06 12:24:46.333446598 -0400
@@ -100,6 +100,7 @@
         CC2500_WriteReg(CC2500_02_IOCFG0, 0x06);
         CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x05);
         CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x05);
+        CC2500_WriteReg(CC2500_3E_PATABLE, 0xff);
         CC2500_WriteReg(CC2500_09_ADDR, 0x43);
         CC2500_WriteReg(CC2500_06_PKTLEN, 0xff);
         CC2500_WriteReg(CC2500_04_SYNC1, 0x13);

That CC2500_3E_PATABLE "0xff" value can be reduced for lower power output. I see some of the FrSky code uses a lower "0xfe" instead (I don't know why).

These are all the possible values:

CC2500_00_PWR55DN = 0x00,     // -55dBm
   CC2500_50_PWR30DN = 0x50,     // -30dBm
   CC2500_44_PWR28DN = 0x44,     // -28dBm
   CC2500_C0_PWR26DN = 0xC0,     // -26dBm
   CC2500_84_PWR24DN = 0x84,     // -24dBm
   CC2500_81_PWR22DN = 0x81,     // -22dBm
   CC2500_46_PWR20DN = 0x46,     // -20dBm
   CC2500_93_PWR18DN = 0x93,     // -18dBm
   CC2500_55_PWR16DN = 0x55,     // -16dBm
   CC2500_8D_PWR14DN = 0x8D,     // -14dBm
   CC2500_C6_PWR12DN = 0xC6,     // -12dBm CC2500 default
   CC2500_97_PWR10DN = 0x97,     // -10dBm
   CC2500_6E_PWR8DN = 0x6E,      // -8dBm
   CC2500_7F_PWR6DN = 0x7F,      // -6dBm
   CC2500_A9_PWR4DN = 0xA9,      // -4dBm
   CC2500_BB_PWR2DN = 0xBB,      // -2dBm
   CC2500_FE_PWR0DN = 0xFE,      // 0dBm
   CC2500_FF_PWR1UP = 0xFF,      // +1dBm

Note this is the power output from the CC2500 which it what gets fed to the power amplifier that pushes it higher. So +1dBm on the CC2500 is I believe approximately +20dBm output from the power amp.

Last edit: 06 Jul 2013 16:38 by tx.

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