N900 FM radio receiver - Revision history

87.20.163.222: /* User */

2011-04-27T21:14:34Z

User

← Older revision		Revision as of 21:14, 27 April 2011
Line 67:		Line 67:

	[http://maemo.org/packages/view/fmradio/ FMRadio],		[http://maemo.org/packages/view/fmradio/ FMRadio],
	[http://maemo.org/packages/view/qradio/ ~~Qradio~~]		[http://maemo.org/packages/view/qradio/ QRadio]
	and		and
	[http://maemo.org/packages/view/cfmradio/ C FM Radio]		[http://maemo.org/packages/view/cfmradio/ C FM Radio]

	[[Category:N900 Hardware]]		[[Category:N900 Hardware]]

imported_>onion: add "C FM Radio"

2011-02-16T11:45:35Z

add "C FM Radio"

← Older revision		Revision as of 11:45, 16 February 2011
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	===User===		===User===

	There are ~~two~~ userspace application that uses the FM receiver:		There are 3 userspace application that uses the FM receiver:

	[http://maemo.org/packages/view/fmradio/ FMRadio]		[http://maemo.org/packages/view/fmradio/ FMRadio],
	and		[http://maemo.org/packages/view/qradio/ Qradio]
	[http://maemo.org/packages/view/~~qradio~~/ ~~Qradio~~ ]		and
			[http://maemo.org/packages/view/cfmradio/ C FM Radio]

	[[Category:N900 Hardware]]		[[Category:N900 Hardware]]

imported_>m750: /* User */

2011-01-06T13:14:53Z

User

← Older revision		Revision as of 13:14, 6 January 2011
Line 64:		Line 64:
	===User===		===User===

	~~The only (?)~~ userspace application that uses the FM receiver is [http://maemo.org/packages/view/fmradio/ FMRadio].		There are two userspace application that uses the FM receiver:

			[http://maemo.org/packages/view/fmradio/ FMRadio]
			and
			[http://maemo.org/packages/view/qradio/ Qradio ]

	[[Category:N900 Hardware]]		[[Category:N900 Hardware]]

imported_>amigadave: /* User */ more generic fmradio link

2010-09-14T09:31:07Z

User: more generic fmradio link

← Older revision		Revision as of 09:31, 14 September 2010
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	===User===		===User===

	The only (?) userspace application that uses the FM receiver is [http://maemo.org/packages~~/package_instance~~/view~~/fremantle_extras_free_armel~~/fmradio~~/2010.03.20~~/ FMRadio].		The only (?) userspace application that uses the FM receiver is [http://maemo.org/packages/view/fmradio/ FMRadio].

	[[Category:N900 Hardware]]		[[Category:N900 Hardware]]

imported_>amigadave: wikify slightly

2010-08-23T09:57:04Z

wikify slightly

← Older revision		Revision as of 09:57, 23 August 2010
Line 11:		Line 11:

	==Software==		==Software==

	===Kernel===		===Kernel===
	~~The FM receiver is implemented as a video4linux radio device by the [http://mxr.maemo.org/fremantle/source/kernel/drivers/media/radio/radio-bcm2048.c bcm2048] module.~~
	~~This controls the receiver over the [[N900 Hardware Bus I2C]].~~

	~~It appears~~ as device /~~dev~~/~~radio1~~.		The FM receiver is implemented as a video4linux radio device by the [http://mxr.maemo.org/fremantle/source/kernel/drivers/media/radio/radio-bcm2048.c bcm2048] module. This controls the receiver over the [[N900 Hardware Bus I2C]].

	v4l2-ctl --all -d /dev/radio1		It appears as device <code>/dev/radio1</code>.
	Driver Info:		<pre>
	Driver name : bcm2048		v4l2-ctl --all -d /dev/radio1
	Card type : Broadcom bcm2048 FM Radio Recei		Driver Info:
	Bus info : I2C: 0x22		Driver name : bcm2048
	Driver version: 1		Card type : Broadcom bcm2048 FM Radio Recei
	Capabilities : 0x00050400		Bus info : I2C: 0x22
	Tuner		Driver version: 1
	Radio		Capabilities : 0x00050400
	Video input : 0		Tuner
	Frequency: 1518400 (94.900000 MHz)		Radio
	Video Standard = 0x00000000		Video input : 0
	Streaming Parameters Video Capture:		Frequency: 1518400 (94.900000 MHz)
	Frames per second: 25.000 (25/1)		Video Standard = 0x00000000
	Read buffers : 0		Streaming Parameters Video Capture:
	Tuner:		Frames per second: 25.000 (25/1)
	Name : FM Receiver		Read buffers : 0
	Capabilities : 62.5 Hz stereo		Tuner:
	Frequency range : 87.5 MHz - 108.0 MHz		Name : FM Receiver
	Signal strength/AFC : 0%/0		Capabilities : 62.5 Hz stereo
	Current audio mode : stereo		Frequency range : 87.5 MHz - 108.0 MHz
	Available subchannels: stereo		Signal strength/AFC : 0%/0
			Current audio mode : stereo
			Available subchannels: stereo
			</pre>

	The module is only loaded when the radio is used.		The module is only loaded when the radio is used.
Line 61:		Line 63:

	===User===		===User===

	The only (?) userspace application that uses the FM receiver is [http://maemo.org/packages/package_instance/view/fremantle_extras_free_armel/fmradio/2010.03.20/ FMRadio].		The only (?) userspace application that uses the FM receiver is [http://maemo.org/packages/package_instance/view/fremantle_extras_free_armel/fmradio/2010.03.20/ FMRadio].

	[[Category:N900 Hardware]]		[[Category:N900 Hardware]]

imported_>speedevil: /* Kernel */

2010-08-22T01:58:11Z

Kernel

← Older revision		Revision as of 01:58, 22 August 2010
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	fm_rds_mask rds_b_block_match uevent		fm_rds_mask rds_b_block_match uevent
	</pre>		</pre>
			The sysfs interface allows configuration of region (which affects frequency ranges and other parameters).

	===User===		===User===

imported_>speedevil: /* Kernel */

2010-08-22T01:55:51Z

Kernel

← Older revision		Revision as of 01:55, 22 August 2010
Line 41:		Line 41:

	The module is only loaded when the radio is used.		The module is only loaded when the radio is used.

			It is also exposed under sysfs.
			<pre>
			/sys/class/i2c-adapter/i2c-3/3-0022# ls
			audio_route fm_rssi rds_data
			bus fm_search_mode_direction rds_pi
			dac_output fm_search_rssi_threshold rds_pi_mask
			driver fm_search_tune_mode rds_pi_match
			fm_af_frequency modalias rds_ps
			fm_best_tune_mode mute rds_rt
			fm_carrier_error name rds_wline
			fm_deemphasis power region
			fm_frequency power_state region_bottom_frequency
			fm_hi_lo_injection rds region_top_frequency
			fm_rds_flags rds_b_block_mask subsystem
			fm_rds_mask rds_b_block_match uevent
			</pre>

	===User===		===User===

imported_>speedevil: /* Kernel */

2010-08-03T00:58:56Z

Kernel

← Older revision		Revision as of 00:58, 3 August 2010
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	v4l2-ctl --all -d /dev/radio1		v4l2-ctl --all -d /dev/radio1
	Driver Info:		Driver Info:
	Driver name : bcm2048		Driver name : bcm2048
	Card type : Broadcom bcm2048 FM Radio Recei		Card type : Broadcom bcm2048 FM Radio Recei
	Bus info : I2C: 0x22		Bus info : I2C: 0x22
	Driver version: 1		Driver version: 1
	Capabilities : 0x00050400		Capabilities : 0x00050400
	Tuner		Tuner
	Radio		Radio
	Video input : 0		Video input : 0
	Frequency: 1518400 (94.900000 MHz)		Frequency: 1518400 (94.900000 MHz)
	Video Standard = 0x00000000		Video Standard = 0x00000000
	Streaming Parameters Video Capture:		Streaming Parameters Video Capture:
	Frames per second: 25.000 (25/1)		Frames per second: 25.000 (25/1)
	Read buffers : 0		Read buffers : 0
	Tuner:		Tuner:
	Name : FM Receiver		Name : FM Receiver
	Capabilities : 62.5 Hz stereo		Capabilities : 62.5 Hz stereo
	Frequency range : 87.5 MHz - 108.0 MHz		Frequency range : 87.5 MHz - 108.0 MHz
	Signal strength/AFC : 0%/0		Signal strength/AFC : 0%/0
	Current audio mode : stereo		Current audio mode : stereo
	Available subchannels: stereo		Available subchannels: stereo

	The module is only loaded when the radio is used.		The module is only loaded when the radio is used.

imported_>speedevil: /* Kernel */

2010-08-03T00:57:35Z

Kernel

← Older revision		Revision as of 00:57, 3 August 2010
Line 16:		Line 16:

	It appears as device /dev/radio1.		It appears as device /dev/radio1.

			v4l2-ctl --all -d /dev/radio1
			Driver Info:
			Driver name : bcm2048
			Card type : Broadcom bcm2048 FM Radio Recei
			Bus info : I2C: 0x22
			Driver version: 1
			Capabilities : 0x00050400
			Tuner
			Radio
			Video input : 0
			Frequency: 1518400 (94.900000 MHz)
			Video Standard = 0x00000000
			Streaming Parameters Video Capture:
			Frames per second: 25.000 (25/1)
			Read buffers : 0
			Tuner:
			Name : FM Receiver
			Capabilities : 62.5 Hz stereo
			Frequency range : 87.5 MHz - 108.0 MHz
			Signal strength/AFC : 0%/0
			Current audio mode : stereo
			Available subchannels: stereo

	The module is only loaded when the radio is used.		The module is only loaded when the radio is used.

imported_>speedevil: /* Kernel */

2010-08-03T00:54:42Z

Kernel

← Older revision		Revision as of 00:54, 3 August 2010
Line 13:		Line 13:
	===Kernel===		===Kernel===
	The FM receiver is implemented as a video4linux radio device by the [http://mxr.maemo.org/fremantle/source/kernel/drivers/media/radio/radio-bcm2048.c bcm2048] module.		The FM receiver is implemented as a video4linux radio device by the [http://mxr.maemo.org/fremantle/source/kernel/drivers/media/radio/radio-bcm2048.c bcm2048] module.
	This controls the receiver over the [[N900 Hardware I2C]] ~~bus~~.		This controls the receiver over the [[N900 Hardware Bus I2C]].

	It appears as device /dev/radio1.		It appears as device /dev/radio1.