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Improve radio RDS driver and framework

* 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* Text is no longer updated until a complete group has been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
This commit is contained in:
Michael Sevakis 2017-01-30 09:52:05 -05:00
parent 6436c6e749
commit fc9695eb47
25 changed files with 514 additions and 343 deletions

View file

@ -127,10 +127,6 @@
#include "iap.h"
#endif
#ifdef HAVE_RDS_CAP
#include "rds.h"
#endif
#include "talk.h"
static const char* threads_getname(int selected_item, void *data,
@ -2166,17 +2162,25 @@ static int radio_callback(int btn, struct gui_synclist *lists)
#endif /* TEA5760 */
#ifdef HAVE_RDS_CAP
simplelist_addline("PI:%04X PS:'%8s'",
rds_get_pi(), rds_get_ps());
simplelist_addline("RT:%s",
rds_get_rt());
time_t seconds = rds_get_ct();
{
char buf[65*4];
uint16_t pi;
time_t seconds;
tuner_get_rds_info(RADIO_RDS_NAME, buf, sizeof (buf));
tuner_get_rds_info(RADIO_RDS_PROGRAM_INFO, &pi, sizeof (pi));
simplelist_addline("PI:%04X PS:'%8s'", pi, buf);
tuner_get_rds_info(RADIO_RDS_TEXT, buf, sizeof (buf));
simplelist_addline("RT:%s", buf);
tuner_get_rds_info(RADIO_RDS_CURRENT_TIME, &seconds, sizeof (seconds));
struct tm* time = gmtime(&seconds);
simplelist_addline(
"CT:%4d-%02d-%02d %02d:%02d",
time->tm_year + 1900, time->tm_mon + 1, time->tm_mday,
time->tm_hour, time->tm_min, time->tm_sec);
#endif
}
#endif /* HAVE_RDS_CAP */
return ACTION_REDRAW;
}
static bool dbg_fm_radio(void)