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Sansa Clip+: add RDS support

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Based on a patch by Amaury Pouly which was based on a patch from Ryan
Hitchman.

I mainly moved the code for polling into the tuner driver so it can be
reused by other targets. I added the CONFIG parameter for the polling
frequency (in ticks) to save energy. Also, I did some minor cleanups.

Change-Id: I95a62e7e1e42c62dbf47ecb27a3b312a42be62aa
This commit is contained in:
Wolfram Sang 2021-11-15 20:46:28 +01:00 • committed by Solomon Peachy
parent 701d4ba77e
commit de0346065b
6 changed files with 76 additions and 2 deletions
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6
firmware/target/arm/as3525/fmradio-i2c-as3525.c
View file

@ -185,6 +185,11 @@ int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
}
#ifdef HAVE_RDS_CAP
/* On the Sansa Clip Zip, the tuner interrupt line is routed to the SoC so we
* can use to detect when a RDS packet is ready. On the Clip+, we have to
* regularly poll. */
#if !(CONFIG_RDS & RDS_CFG_POLL)
/* Low-level RDS Support */
static struct semaphore rds_sema;
static uint32_t rds_stack[DEFAULT_STACK_SIZE/sizeof(uint32_t)];
@ -231,4 +236,5 @@ void si4700_rds_init(void)
create_thread(rds_thread, rds_stack, sizeof(rds_stack), 0, "rds"
IF_PRIO(, PRIORITY_REALTIME) IF_COP(, CPU));
}
#endif /* !(CONFIG_RDS & RDS_CFG_POLL) */
#endif /* HAVE_RDS_CAP */

2
firmware/target/arm/as3525/system-as3525.c
View file

@ -180,7 +180,7 @@ void INT_GPIOA(void)
void button_gpioa_isr(void);
button_gpioa_isr();
#endif
#ifdef HAVE_RDS_CAP
#if defined(HAVE_RDS_CAP) && !(CONFIG_RDS & RDS_CFG_POLL)
void tuner_isr(void);
tuner_isr();
#endif