Database Users

FM transmiter/reciver

It been reported thru several teardowns that the n1 has a fm transmiter/reciver inside. Is there anyway to to access this hardware (where would it be located /sys/device/ ect) would be nice to know if we can interface with this hardware.
nexusoneblog.com/blog/2010/1/6/nexus-one-dissected-reveals-80211n-wifi-and-fm-transmitter.htm

It would be awesome to actually have that funtionality. I've seen a few crappy flip phones with FM transmitters built in.

a google employee on this forum (swetland) said there is an fm transmitter/reciever, but google is not developing or working on an app for that yet, that's why they did not advertise it.

My nexus one is rooted and I have a console program just trying to figure out if this hardware would be listed in the /sys/devices/ area anywhere. Im new to android not sure of how the google api's work but would be intrested into trying to get a small app or script to run just to initalize the hardware and fool around with it. any ideas?

i know cliq users have a FM radio built in too, but they don't have an app to use it. see this here http://www.modmymoto.com/forums/showthread.php?t=526775

transmitter / receiver
does that mean it can transmit fm signals to car radio so we can listen to music?!

at314 said:
transmitter / receiver
does that mean it can transmit fm signals to car radio so we can listen to music?!
Click to expand...
Click to collapse
I think that means we can use N1 like a walkie talkie if the application is available.?

Nycro said:
My nexus one is rooted and I have a console program just trying to figure out if this hardware would be listed in the /sys/devices/ area anywhere. Im new to android not sure of how the google api's work but would be intrested into trying to get a small app or script to run just to initalize the hardware and fool around with it. any ideas?
Click to expand...
Click to collapse
there should not be anything on the phone that you can find that mentions the existence of an fm reciever/transmitter... the phone has one but there is no functionality of it because there is no driver or app support for it... from what i have gathered getting the thing to work is going to be quit a project because the community would have to create a driver for the device as well as an application that calls on that driver as well as utilizes the capabilities of the chip itself... i dont know what experience you have with creating a driver to work for a complex piece of hardware that you have no idea how it works, its more/less going to be like blindly threading a needle unless google/htc would be so kind as to give one of our lovely coders some groundwork...
at314 said:
transmitter / receiver
does that mean it can transmit fm signals to car radio so we can listen to music?!
Click to expand...
Click to collapse
potentially... if this thing gets coded to work, receiving signals will prolly be the easier thing to figure out first...

other HTC devices, such as the HTC Touch Pro2, have a built in FM receiver. HTC actually writes an app for this and I use it on my TP2, but I don't know if one exists for the N1. You can search xda-developers for the win-mo version for the TP2, but my point is, if they did it for winmo, they can do it for android!

darkfire23 said:
other HTC devices, such as the HTC Touch Pro2, have a built in FM receiver. HTC actually writes an app for this and I use it on my TP2, but I don't know if one exists for the N1. You can search xda-developers for the win-mo version for the TP2, but my point is, if they did it for winmo, they can do it for android!
Click to expand...
Click to collapse
lol clearly you did not read get my point... "they" are not making anything, else they would have marketed it from the get go... it is up to the android community more specifically the nexus one community to come up with a driver that makes the chip functional... the chip in the other devices may be different as well, aka different driver needed...

What about htc tattoo? It has a fm receiver and an app...

The nexus one uses the broadcom BCM4329 Chipset. I need to find something to work with for this chip to even understand the funconatly of the chip itself I will look thru broadcoms site later see if they have any kind of driver or any information at all on this chipset. Reading other posts on other phones that had a similar chipset people were able to get the reciver on the chip activated but were unable to get the sound routed to the phone. They were able to however to get the the radio to tune to certain frequanceys and I think get the RDS information from the chipset. If anyone finds any relevant information post it here
Nycro

This tree was just added to the android source on the 12th of Jan looks to be mostley for the WLAN/Bluetooth features of the chipset
ttp://android.git.kernel.org/?p=platform/system/wlan/broadcom.git;a=summary

Have a look at.
codeaurora.org/gitweb/quic/la/?p=platform/packages/apps/FM.git;a=summary
Looks like an fm radio app for android using a qualcomm chip.

Im talking with the devolper of the driver for the wifi portion of the chip. At this time he is as well intrested in getting the Radio part of the chipset working but does not know much about it himself. Hopefully something will arise out of this conversation with him and maybe we will get a nice start to getting this portion of the chip working!
Im new with programing for android so I probley will need some help in the end lol.. allthough im pretty adaptive with c++ and some java im not no expert (Bacholers in network secuirty)

JHaste said:
lol clearly you did not read get my point... "they" are not making anything, else they would have marketed it from the get go... it is up to the android community more specifically the nexus one community to come up with a driver that makes the chip functional... the chip in the other devices may be different as well, aka different driver needed...
Click to expand...
Click to collapse
Clearly, you didn't get my point. For the TP2, not only was the Radio app not marketed, it was also not made available by HTC, but is now available on this forum. Secondly, I didn't contest that Google is not going to develop a Radio app - I simply said that HTC HAS made one. Hopefully, that clears things up

I have been talking with the guy from broadcom tongiht i will quote some of what was said here. Im not sure if he wants to be know to the comunity or not.
He had included the link to a video I have seen on this fourm will link below.
"I'll let you know when I figure something out. What other HTC phone uses the 4329 chip with Android? I wasn't aware of one. The HTC HD2 WM6.5 phone uses 4329, but I don't know if FM is enabled on that either.
There is an Android FM radio app for the BCM4325 chip, I saw a YouTube video of it running on a BeagleBoard: ww.youtube.com/watch?v=v6wdTOHrwQw This is using an AzureWave module, which has the 4325 in it.
The FM RX portion on the 4329 should be the same or nearly the same. I believe the FM is conrolled by special commands in the BT HCI interface, so some Android framework/JNI work might have to be done to the BT stack."
Thanks to Mr H ^^
I will do more work on this tommorow and see how far I can get
Thanks for everyones intrest and help!

An FM APP to unlock the FM Radio functions of my Nexus is something that I am willing to pay for!!!!
Some of the senior developers here are aces so I will keep my fingers crossed.

I just want to express my interest in a FM radio for Nexus One.
I think people (including me) will be happy to pay for an app that enables the FM reciever on the phone.
Good luck to whoever is trying to get this to work!

As I am not a developer all I can do to help is surf the web to see what I can find.
I found this link tp://www.9to5mac.com/broadcom-BCM4329-iphone-802.11n-FM
That states the iPhone has the BCM4329 chip in it. Now I have not found an apple app nor do I know if this helps any of the aces out there.
So just take a look.

Froyo FM radio? what gives?

I thought that was appart of the update? I don't seem to have that? Is it like the trackball that they released the driver/api and some dev has to make a app to use it now? I was hopeful for the transmitter more than a reciver but I guess I am a big dreamer ;-)

That was never confirmed to be apart of the update - it was simply speculation that evolved into false hope.

Do we know for sure that the FM hardware exists?

wick12345 said:
I thought that was appart of the update?
Click to expand...
Click to collapse
Can you provide a link to where/when Google stated that it would be part of 2.2?
Bet you can't

AndroidPerson said:
Do we know for sure that the FM hardware exists?
Click to expand...
Click to collapse
Yes we do...
Oddly, an app called "HTC Radio Info" is in the manage applications, all tab. Not sure if this has already been discussed?
Anyways, it was never confirmed, just speculated upon. And if it is an API, then I am sure we will see something come of it in due time.

Well, I have been skeptical about the FM radio because of the chip name.
"Of interest is a Broadcom chip labeled Broadcom BCM4329EKUBG. Why? Well, the BCM4329 (albeit, without the "EKUBG" qualifier) is capable of 802.11n (HTC only lists 802.11b/g) WiFi in addition to FM transmitter and receiver."
The chip name is not the same as the one with FM t/r but has been said to have it, which is pure speculation.
http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM4329

But the Nexus One DOES have a wireless N radio and you can connect to N only networks.

evilkorn said:
Well, I have been skeptical about the FM radio because of the chip name.
"Of interest is a Broadcom chip labeled Broadcom BCM4329EKUBG. Why? Well, the BCM4329 (albeit, without the "EKUBG" qualifier) is capable of 802.11n (HTC only lists 802.11b/g) WiFi in addition to FM transmitter and receiver."
The chip name is not the same as the one with FM t/r but has been said to have it, which is pure speculation.
http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM4329
Click to expand...
Click to collapse
Yes, and in addition even if the chip supports it the fm radio section might not be connected. On these types of devices that have fm receivers they are usually wired to use the headphones as an antenna since an fm antenna is far too large to fit in the device. Ours might not have that much needed connection.
Mike

IF we got it this would not be the first device I have owned that a supposedly not working/not connected fm radio module suddenly became a working/connected fm module. Not saying one way or the other but its absence is not absolute proof.

Paul from modaco has managed to get it to tune into stations, but just not get any audio out.

krabman said:
IF we got it this would not be the first device I have owned that a supposedly not working/not connected fm radio module suddenly became a working/connected fm module. Not saying one way or the other but its absence is not absolute proof.
Click to expand...
Click to collapse
It has a precedent, though - update for HTC Touch CDMA (HTC Vogue) enabling GPS receiver that was unused until then, existing in Qualcomm MSM7500 CPU of the Vogue.
So it was done before. The question is - would Google bother or would they just skip it and leave it to the community (if it's feasible at all, given that Desire has the same chip and connections - which isn't confirmed).

Thats what I mean I had a touch diamond NAM version with supposedly no fm because of some hardware deal and sure enough despite HTCs assurances that it could not be done the community got fm going after a time. I would bet there are other examples besides these.

Bluetooth 3.0 is a lie

Go to the bluetooth menu under ##DEBUG# with 2.2.1 and you'll see it says BCM4329 which is a 2.1+EDR chip. Right under that it will flat out say "BT_SPEC_VERSION_2_1".
Edit: Sorry for posting in the dev forum, I forgot I was still on there.

No. Epic 4G has bluetooth 2.1 and other galaxy s's have bluetooth 3.0. Simple is that and samsung did not lure about that.
Sent from my SPH-D700 using XDA App

Hmm, what chip do the other phones use?
Also, what's this supposed to mean? https://www.bluetooth.org/tpg/QLI_viewQDL.cfm?qid=16676

However, I noticed that the BCM4329 family does claim to have both FM receiver and transmitter capabilities... but then I guess that doesn't mean this particular chip, by the way it was worded - I hope it's not just wishful thinking

styles420 said:
However, I noticed that the BCM4329 family does claim to have both FM receiver and transmitter capabilities... but then I guess that doesn't mean this particular chip, by the way it was worded - I hope it's not just wishful thinking
Click to expand...
Click to collapse
A lot of phones have FM chips disabled. The Nexus One has this same chip actually and a lot of people tried getting FM transmitting to work but I haven't seen anything yet.
I emailed someone at Phonescoop and they say the phone has Bluetooth 3.0 and linked me to the same certification site I posted previously.

Isn't Bluetooth 3.0 effectively do authentication via bluetooth and send file over wifi? not to mention not too many devices support it :/
Bluetooth 4.0 introduces most of the goodies.. like low power mode..

FM for fascinate???

Samsung Fascinate have Fm Radio, but I don't find app its. Can I set app for my Cell. thanks

Huh? Could you reword that question? Its hard to understand what you mean.

Although I think this is a General Forum Question, I think he is trying to say.... "The Fascinate has an FM radio, but I can not find the App.... Where can I find said app to use the FM radio..."
Answer: Doesn't exist..

there is an FM radio in it?
Don't you think thats something they would advertise?
Highly doubtful

If there is a FM capable chip on board, we currently don't have any apps for it.
I don't believe that we have a FM chip in this phone.

I found on gsmarena the specs of this phone and realize that the phone has "FM radio with RDS". ^^. lol.
http://www.gsmarena.com/samsung_fascinate-3492.php

Could this be a feature that froyo will enable? I seem to remember this happening to a friend of mine when his incredible was updated to 2.2; he got the radio & the flashlight.
Sent from my SCH-I500 using XDA App

it would be a nice little addition, however I think I would still prefer pandora or one of the many other internet radio apps.

The FM radio was listed on the first pre-release spec listings, but was removed from later listings. The prevailing theory is that the Fascinate was originally going to have an FM radio, but it was scrapped (like how we were supposed to have Media Hub like the other Galaxy S phones but are stuck with VCast). I wouldn't count on the hardware being there. The Incredible's FM tuner was functional with 2.1 (I can vouch for that firsthand).

FM radio stations are lobbying to make FM radio receivers mandatory in phones in the US (in exchange for paying higher fees).
Because of that, several phone manufacturers and chip makers have had the hardware put in their devices as a just in case measure. For instance you may find a Broadcom chip that controls the wifi and phone radio to have an fm receiver as well. In any case, these specifications sometimes fluctuate.
However, without actual drivers to run said unsupported tech, the issue is moot.
Swyped w/ XDA App. When in doubt, mumble.

Falcyn said:
The FM radio was listed on the first pre-release spec listings, but was removed from later listings. The prevailing theory is that the Fascinate was originally going to have an FM radio, but it was scrapped
Click to expand...
Click to collapse
+1 on this... Exactly what happened

i9305 Teardown

Hey guys,
before I hijack another Thread again, have som high-res pictures of the i9305 Board. I identified the Chips I could, but I couldn't get Info on all of them... I am posting this because we were wondering if the 9305 has FM Radio or not. (And it seems like it doesn't...)
Anyway find them pics here: https://www.dropbox.com/sh/nqqcbf0er57josh/Oaby-BzY9g
Cheers

Good Idea maybe someone with hardware knowledge can confirm But i cant see anything that looks like the chip andreilux was showing and that chip in the same location is blurry i cant see how many legs it has or any numbers on it
---------- Post added at 11:36 PM ---------- Previous post was at 11:27 PM ----------
This is also an interesting read
http://www.nab.org/xert/scitech/pdfs/rd031411.pdf
Which is probably why the dumbass samsung worker said its up to the carriers if they wish to include fm software maybe she was mistaken with another galaxy but unless someone can confirm it has the hardware then that worker obviously doesnt know what she is talking about
And I was doing a search and It came up under the I9300 detailed analasys a list of all the I9300 hardware
Network:
Broadcom BCM4334 - latest ultra low power solution for smartphones
Wi-fi 802.11 a/b/g/n
Bluetooth 4
Contains FM receiver (unused, Si4709 instead) <<<<<< Does this mean that the broadcom also has a fm receiver but they dont use it instead they use the SiLabs Silicon chip?
Does the I9305 have the Broadcom BCM4334??

I don't know about the Broadcom Chip, but I suspect it as this one Chip I couldn't identify... Yes, this one has a FM Receiver, but it also may be useless if it's not connected anywhere. We don't know that and we can't test that. At least I can't with my humble equipment

langer hans said:
I don't know about the Broadcom Chip, but I suspect it as this one Chip I couldn't identify... Yes, this one has a FM Receiver, but it also may be useless if it's not connected anywhere. We don't know that and we can't test that. At least I can't with my humble equipment
Click to expand...
Click to collapse
http://www.broadcom.com/products/Wireless-LAN/802.11-Wireless-LAN-Solutions/BCM4334
If you read there it says .... The chip includes IEEE 802.11 a/b/g/n single-stream MAC/baseband/radio, Bluetooth 4.0 + HS, and an integrated FM radio receiver.
I thought if its on the board it means its already wired up

A Chip beeing on a board doesn't imply it beeing fully wired up. Maybe they get a good price for this chip so they don't care about the FM part. And for why they used another chip on the 9300: I guess it was easier to layout. Maybe better reception, license fees or whatnot.

ahh well there goes that idea then... lol
I was reading this thread before http://forum.xda-developers.com/showthread.php?t=1059296
Mentions a list of products and ours was in the list but note what it says. Its funny how everyone says maybe this maybe that
Says:
These devices will likely never be able to support FM with Spirit or any FM app: (But you never know. OG Motorola Droid was found to be FM audio capable, almost 3 years after introduction in Oct. 2009)
This was in the list
- Samsung Galaxy S3 US/Canada/Japan SC-06D/etc LTE versions do not have needed WCN3660 and Broadcom combo chip FM antenna pin not connected. GT-i9305 also appears incapable of FM. NEW: GT-i9305 / 9305T may have FM hardware, but stock, un-rooted ROMs are not capable.
I also found out yes we do have the BroadCom 4334 its a Murata chipset with FM capabilities But I think one pin of the chip is not connected to anything and that is the FM. Even the I9300 have this chipset and the same pin is not connected they instead use the SiLabs FM chipset

btemtd said:
Says:
These devices will likely never be able to support FM with Spirit or any FM app: (But you never know. OG Motorola Droid was found to be FM audio capable, almost 3 years after introduction in Oct. 2009)
This was in the list
- Samsung Galaxy S3 US/Canada/Japan SC-06D/etc LTE versions do not have needed WCN3660 and Broadcom combo chip FM antenna pin not connected. GT-i9305 also appears incapable of FM. NEW: GT-i9305 / 9305T may have FM hardware, but stock, un-rooted ROMs are not capable.
Click to expand...
Click to collapse
Well, what I write there is based on what you guys are saying and we're all trying to find out together.
Re: telephone reps on the subject of whether or not a device supports FM: They seem to be accurate about 50-60% of the time. In fairness to them, they get little info from above and are not usually too tech savvy.
To many of these phone/support people, "FM" can include all the streaming apps that have "FM" in the title (when IMO they should say "streaming" or similar.) And there are SO many phones, and variants of hardware and software, coming out at a frantic pace, that it's difficult for them or ANY of us to figure out what's going on, unless we see a stock FM app, and someone reports it works.
As for the Broadcom BCM4330/4334/etc. chips for Bluetooth/Wifi, yes they all have FM receive (and transmit, but don't ask) hardware capability. But I think at least half of the devices using them don't use the FM part, and don't have the antenna pin(s) connected, nor the audio pins. And Broadcom has most of the market for "combo" chips.
So far I think every higher end Galaxy device uses Broadcom for Bluetooth and WiFi, and not a single one uses the FM part. This includes Galaxy S/S2/S3/Note/Note2/Player. If any of these devices has FM, it's via a dedicated Silicon Labs chip: Si4709 or Si4705 on GS3 at least.

Trying to clarify the stories of reports of FM on GT-i9305:
- The Youtube video demo showed an FM app. AFAICT that person started the app and heard radio type static, but no signals. He said he was in a rural area with few signals, so who knows.
But I've written elsewhere that I think hearing static is a good sign, as it proves the audio path and FM chip are there, IMO.
- My second point relates to the Note2. I previously mistakenly thought it was for 9305, but it was Note2, perhaps the GT-i7100 model. But there are similarities between Note2 (or at least the GT-i7105 variant) and GT-i9305.
Around the time of unveiling of the Note2 I saw videos that briefly showed an FM app in the app drawer. But I don't recall any video/demo showing the FM app working, or any specific claim it was tried and worked.
- Before anyone brings it up, Internet phone spec sites are notoriously bad at small detail accuracy, particularly for FM.

mikereidis said:
Trying to clarify the stories of reports of FM on GT-i9305:
- The Youtube video demo showed an FM app. AFAICT that person started the app and heard radio type static, but no signals. He said he was in a rural area with few signals, so who knows.
But I've written elsewhere that I think hearing static is a good sign, as it proves the audio path and FM chip are there, IMO.
Click to expand...
Click to collapse
The sound platforms are different for all the devices. Fact is globally all LTE variations of the S3 and Note 2 lack FM radio support, even if they magically had the hardware or pin-ups, the basic defconfig in all the kernels have the FM_RADIO base configuration turned off, not to mention the lack of GPIO pin definitions to it in any of the boards.

I would love to see a teardown of a 9305T now to see if they've installed another bandfilter to 'break' 2100MHz reception!!!

I see a chip in the GT-i9305 pics in the same position as the si4705 FM chip on the GT-i9300. It's about half the length and width (1/4 area) as on the GT-i9300 but it's there.
It could be a Silicon Labs FM chip in a smaller package size, and that's my "bet" for what it is.
In the "FM is off topic, please don't post about FM" thread, I think the best page of posts is here: http://forum.xda-developers.com/showthread.php?t=1932997&page=6 . AndreiLux posted a pic there showing the Si4705 between the Murata/Broadcom BT/WiFi/FM combo module/chip and the chip.
BTW, the Si4705 is U203 in the GT-i9300 service manual. There's an error claiming the Si4705 is u711, which is actually a big camera chip I guess.
There are GT-i9305 pics here: http://imgur.com/a/ypxOf#aS29c and I think best pic/resolution is pic 6 of 11 (0?) here: http://imgur.com/a/ypxOf#aS29c
In that pic 6, the Murata/Broadcom module is at lower left. Immediately to it's right is a small surface mount component at top, and below it what may be a chip.
Move to the right from the component and you see what I think is the Silicon Labs FM chip. There are several solder bumps.
For reference, further to the right and below is the white push button switch.
----
Software wise, my suspicion would be that a kernel for the GT-i9300 that supported the chip would "magically" support this alleged FM chip, using whatever constants and port values worked for 9300. It's the same Exynos SOC pretty much, and the board layouts are similar, right ?

ewok666 said:
I would love to see a teardown of a 9305T now to see if they've installed another bandfilter to 'break' 2100MHz reception!!!
Click to expand...
Click to collapse
The I9305 Runs on the 2100mhz are you saying that the I9305T may not?
---------- Post added at 12:17 PM ---------- Previous post was at 12:11 PM ----------
mikereidis said:
----
Software wise, my suspicion would be that a kernel for the GT-i9300 that supported the chip would "magically" support this alleged FM chip, using whatever constants and port values worked for 9300. It's the same Exynos SOC pretty much, and the board layouts are similar, right ?
Click to expand...
Click to collapse
Yes its the same exynos SOC and layous are similar .
Maybe andreilux has some input on your post, its very interesting.

btemtd said:
Yes its the same exynos SOC and layous are similar .
Click to expand...
Click to collapse
Thanks for the email log. So yours is a 9305 on Vodafone AU ?
I have another log from a 9305T on Telstra AU, but it wasn't rooted so I get less info.
The only sign of FM on either device is the "FM In" control in the ALSA audio driver. This doesn't prove anything one way or another though; "phantom" controls on variants are common.
If anyone can look closer at the FM chip and Murata module area, please do, and if you can, post high res pictures.
Besides that I look forward to someone building and installing a kernel with the Samsung Si4709_driver / radio-si4709-i2c drivers enabled, either in the main kernel or as loadable *.ko drivers. There are alternative V4L drivers for si470x but the Samsung ones are preferred for my app, and needed for the Samsung app.
IMO, a kernel dev could pretty much use the config from a GT-i9300.
These investigations usually end in defeat, and I could be wrong, but I'm feeling optimistic about this one with the evidence so far.
I see 4 kernel variants:
GT-I9305
GT-I930N
GT-I9305T_SEA
GT-I9305_HK
All use arch/arm/configs/m3_00_defconfig and none have the FM driver enabled. Interestingly GT-I9305_HK m3_00_variant_defconfig has some stuff for variants, but nothing impacts FM:
3vzw="CONFIG_TARGET_LOCALE_USA=y CONFIG_MACH_M3_USA_VZW=y"
m3vzw_undef="TARGET_LOCALE_EUR \
SND_USE_LINEOUT_SWITCH USB_SERIAL_CSVT"
m3spr="CONFIG_TARGET_LOCALE_USA=y CONFIG_MACH_M3_USA_SPR=y"
m3spr_undef="TARGET_LOCALE_EUR \
SND_USE_LINEOUT_SWITCH USB_SERIAL_CSVT"
m3tmo="CONFIG_TARGET_LOCALE_USA=y CONFIG_MACH_M3_USA_TMO=y"
m3tmo_undef="TARGET_LOCALE_EUR \
SND_USE_LINEOUT_SWITCH USB_SERIAL_CSVT"
m3att="CONFIG_TARGET_LOCALE_USA=y CONFIG_MACH_M3_USA_ATT=y"
m3att_undef="TARGET_LOCALE_EUR \
SND_USE_LINEOUT_SWITCH USB_SERIAL_CSVT"
m3dcm="CONFIG_TARGET_LOCALE_JPN=y CONFIG_MACH_M3_JPN_DCM=y \
CONFIG_EXYNOS4_MSHC_SUPPORT_PQPRIME_EPLL=y \
CONFIG_FELICA=y CONFIG_ISDBT=y CONFIG_ISDBT_FC8150=y"
m3dcm_undef="TARGET_LOCALE_EUR \
SND_USE_LINEOUT_SWITCH USB_SERIAL_CSVT NFC_DEVICES PN65N_NFC"
Click to expand...
Click to collapse
From the m0_00_defconfig file for GT-i9300 I think we need these 3 lines, but not sure about "Samsung Modules":
CONFIG_SAMSUNG_MODULES=y
CONFIG_FM_RADIO=y
CONFIG_FM_SI4705=y

mikereidis said:
Thanks for the email log. So yours is a 9305 on Vodafone AU ?
I have another log from a 9305T on Telstra AU, but it wasn't rooted so I get less info.
The only sign of FM on either device is the "FM In" control in the ALSA audio driver. This doesn't prove anything one way or another though; "phantom" controls on variants are common.
If anyone can look closer at the FM chip and Murata module area, please do, and if you can, post high res pictures.
Besides that I look forward to someone building and installing a kernel with the Samsung Si4709_driver / radio-si4709-i2c drivers enabled, either in the main kernel or as loadable *.ko drivers. There are alternative V4L drivers for si470x but the Samsung ones are preferred for my app, and needed for the Samsung app.
IMO, a kernel dev could pretty much use the config from a GT-i9300.
These investigations usually end in defeat, and I could be wrong, but I'm feeling optimistic about this one with the evidence so far.
Downloading the Samung kernel source now to see if their config disables the FM driver. Will edit this post with an answer.
I see 4 kernel variants:
GT-I9305
GT-I930N
GT-I9305T_SEA
GT-I9305_HK
Click to expand...
Click to collapse
Yes Vodafone is my network provider, I will see if OP can get High res pics... And Andreilux already made the kernel with FM but didnt want to release it untill 100% sure about FM... becuase it may brick a device??

btemtd said:
Yes Vodafone is my network provider, I will see if OP can get High res pics... And Andreilux already made the kernel with FM but didnt want to release it untill 100% sure about FM... becuase it may brick a device??
Click to expand...
Click to collapse
I seriously doubt bricking potential, but with software you never ever know for sure until you try. Communications with the chip is via I2C, not potentially dangerous GPIOs. but there are some GPIOs used for power and who knows what else.
I note that this is a somewhat new si4705 driver Samsung has in drivers/samsung/fm_si47xx for GT-i9300, although it seems little different from the Galaxy S/S2/Note fm_si4709 driver, at first glance at least.
For anyone interested, there is some useful information here about FM missing from the original US LTE GS3s, compared to GT-i9300: http://forum.xda-developers.com/showthread.php?p=31576462
There are various pics, schematic excerpts and a bit about the differences with Si4705 versus the si4709 of the International Galaxy S/S2/Notes.

btemtd said:
The I9305 Runs on the 2100mhz are you saying that the I9305T may not?
---------- Post added at 12:17 PM ---------- Previous post was at 12:11 PM ----------
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No, I'm saying that on past 'T' models the 2100MHz band was attenuated to reduce signal and make them prefer other bands. This is a link but the discussion has been had here before and you should be able to find pictures showing the element discussed.
http://webdevsys.com/gt-i9100t.htm

mikereidis said:
I seriously doubt bricking potential, but with software you never ever know for sure until you try. Communications with the chip is via I2C, not potentially dangerous GPIOs. but there are some GPIOs used for power and who knows what else.
I note that this is a somewhat new si4705 driver Samsung has in drivers/samsung/fm_si47xx for GT-i9300, although it seems little different from the Galaxy S/S2/Note fm_si4709 driver, at first glance at least.
For anyone interested, there is some useful information here about FM missing from the original US LTE GS3s, compared to GT-i9300: http://forum.xda-developers.com/showthread.php?p=31576462
There are various pics, schematic excerpts and a bit about the differences with Si4705 versus the si4709 of the International Galaxy S/S2/Notes.
Click to expand...
Click to collapse
Good research Mike! we'll just wait till andreilux joins the convo, as he has the knowledge of creating the Kernel side.
Also you might like to know that apparently the Law in hong kong restricts the use of Fm radio in Mobile devices, as i have been told by a few suppliers.

ewok666 said:
No, I'm saying that on past 'T' models the 2100MHz band was attenuated to reduce signal and make them prefer other bands. This is a link but the discussion has been had here before and you should be able to find pictures showing the element discussed.
http://webdevsys.com/gt-i9100t.htm
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Click to collapse
Whether it's true or not, my i9305T appears to have equal or better reception on optus than my i9000 (hard to tell 100% but it certainly crazy fast with H+ at my home! My i9000 was almost always crawling on H (hsdpa? the naming scheme really confuses me). I may try to install a stock i9305 modem in future to test though

Well i know for a fact the i9305 is fine on every network in australia just depends on the providor on what speed and quality you will get. And yes we have Dc-hspa+ which is 2 times faster then normal 3g hspa+ ...which is why your getting high speeds. Our phone will still only show h+ if we are on DC i already looked into that .Just imagine 4g.. browsing will go on yet a whole other level again! Lol
I think the 9305t is the same thing to be honest unless telstra did restrict a band to force people to stick with them. That is what you would call a big shifty company.
Becausr the i9300t was the same as the i9300. So i am only assuming this would be the same
Sent from my GT-I9305 using xda app-developers app

btemtd said:
The I9305 Runs on the 2100mhz are you saying that the I9305T may not?
---------- Post added at 12:17 PM ---------- Previous post was at 12:11 PM ----------
Yes its the same exynos SOC and layous are similar .
Maybe andreilux has some input on your post, its very interesting.
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Click to collapse
btemtd said:
Well i know for a fact the i9305 is fine on every network in australia just depends on the providor on what speed and quality you will get. And yes we have Dc-hspa+ which is 2 times faster then normal 3g hspa+ ...which is why your getting high speeds. Our phone will still only show h+ if we are on DC i already looked into that .Just imagine 4g.. browsing will go on yet a whole other level again! Lol
I think the 9305t is the same thing to be honest unless telstra did restrict a band to force people to stick with them. That is what you would call a big shifty company.
Becausr the i9300t was the same as the i9300. So i am only assuming this would be the same
Sent from my GT-I9305 using xda app-developers app
Click to expand...
Click to collapse
Can't say much about the i9300 vs i9300T or the i9305 for that matter BUT what I do know is that the i9100 was supposed to be the same as the i9100T and it very clearly was not. From my own experience the i9100T was sh1t in some areas where an i9100 was perfectly fine and a teardown showed a bandfilter where the i9100 had none.
On Whirlpool is a guy who flashed the Singapore firmware onto his Telstra i9305T and promptly lost 4G. He flashed back the Telstra firmware and got 4G back. I have the Singapore firmware on an i9305 (non T) and my 4G works just fine.
Now, you tell me what to conclude from this but I will not spend a single cent on another T model....I just don't need this kind of crap! (and by crap I don't mean the phone itself but rather the practice of crippling something that works perfectly fine just so you can force your customers one way or the other!)