* Remove unused bits like the radio event and simplify basic
radio interface. It can be more self-contained with rds.h only
required by radio and tuner code.
* Add post-processing to text a-la Silicon Labs AN243. The chip's
error correction can only do so much; additional checks are highly
recommended. Simply testing for two identical messages in a row
is extremely effective and I've never seen corrupted text since
doing that, even with mediocre reception.
Groups segments must arrive in order, not randomly; logic change
only accepts them in order, starting at 0.
Time readout was made a bit better but really we'd need to use
verbose mode and ensure that no errors were seen during receiving
of time and more checks would be need to have a stable PI. The
text is the important bit anyway.
* Time out of stale text.
* Text is no longer updated until a complete group has been
received, as is specified in the standard. Perhaps go back to
scrolling text lines in the radio screen?
* Add proper character conversion to UTF-8. Only the default G0
table for the moment. The other two could be added in.
* Add variants "RDS_CFG_PROCESS" and "RDS_CFG_PUSH" to allow
the option for processed RDS data to be pushed to the driver and
still do proper post-processing (only text conversion for now for
the latter).
Change-Id: I4d83f8b2e89a209a5096d15ec266477318c66925
Choices are limited for those: i2c is either generic software or imx233
hardware and power is either none or with a gpio. So factor ever possible
combination in a single common file and use fmradio-target.h to supply the
required parameters. This will remove a bunch of duplicate code.
Change-Id: If12faeb2e371631cd39cc18a4c1d859812007934
The current pinctrl functions were a mess. Normalise the functions
names to make them shorter and clearer.
Change-Id: Iac6ff84625ef2b7610268e3a5802dc0088de3167
I successfully identified the STC/RDS pin as B2P27.
Strangely the OF uses polling instead of interrupts
but since they routed it, let's use it! On the fuze+
the fmradio i2c uses bit toggling so we can't read
the RDS data in the interrupt context. Instead we
defer the work to a thread.
Change-Id: Iedfa425320e6c91b4351b72e97c732696bdb2b73
Reviewed-on: http://gerrit.rockbox.org/236
Reviewed-by: Bertrik Sikken <bertrik@sikken.nl>
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
Past development has proved that one can mistakely use
the same pin for two uses without noticing. Since this
causes extremely hard to find bugs, the infrastructure
will allow to register pin uses and panic when a conflict
is detected. The pinctrl debug now shows the pin uses
when its support is compiled in.
Change-Id: Idb2d5235ce09207d77aa474d6f158e72b933761a
Only enable fmradio_i2c once with _init() called from system.
Move actual i2c init to system for consistency.
Move tuner power pin setup to power instead of fmradio.
Change-Id: Idb56bfba5803f71b5d049f174c48d2afb969a6ea
