From fc9695eb47732e1c189e2f033dbd55e5c346e8c4 Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Mon, 30 Jan 2017 09:52:05 -0500 Subject: 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 * Text is no longer updated until a complete group has been received, as is specified in the standard.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 --- firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'firmware/target/arm/imx233/sansa-fuzeplus') diff --git a/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c b/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c index bc4a83665d..5d146c4846 100644 --- a/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c +++ b/firmware/target/arm/imx233/sansa-fuzeplus/fmradio-i2c-fuzeplus.c @@ -23,7 +23,6 @@ #include "system.h" #include "kernel.h" #include "pinctrl-imx233.h" -#include "rds.h" #include "si4700.h" /** @@ -52,13 +51,11 @@ static void stc_rds_callback(int bank, int pin, intptr_t user) /* Captures RDS data and processes it */ static void NORETURN_ATTR rds_thread(void) { - uint16_t rds_data[4]; - while(true) { semaphore_wait(&rds_sema, TIMEOUT_BLOCK); - if(si4700_rds_read_raw(rds_data) && rds_process(rds_data)) - si4700_rds_set_event(); + si4700_rds_process(); + /* renable callback */ imx233_pinctrl_setup_irq(2, 27, true, true, false, &stc_rds_callback, 0); } @@ -86,7 +83,6 @@ void si4700_rds_powerup(bool on) void si4700_rds_init(void) { semaphore_init(&rds_sema, 1, 0); - rds_init(); create_thread(rds_thread, rds_stack, sizeof(rds_stack), 0, "rds" IF_PRIO(, PRIORITY_REALTIME) IF_COP(, CPU)); } -- cgit v1.2.3