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-rw-r--r--firmware/target/arm/as3525/pcm-as3525.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/firmware/target/arm/as3525/pcm-as3525.c b/firmware/target/arm/as3525/pcm-as3525.c
index 4f9e18523d..20579806c0 100644
--- a/firmware/target/arm/as3525/pcm-as3525.c
+++ b/firmware/target/arm/as3525/pcm-as3525.c
@@ -150,9 +150,14 @@ void pcm_dma_apply_settings(void)
if(divider < 0 || divider > 511)
panicf("unsupported frequency %ld", frequency);
- CGU_AUDIO &= ~(((511 ^ divider) << 2) /* I2SOUT */
- /*| ((511 ^ divider) << 14) */ /* I2SIN */
- );
+ int cgu_audio = CGU_AUDIO; /* read register */
+ cgu_audio &= ~(511 << 2); /* clear i2sout divider */
+ cgu_audio |= divider << 2; /* set new i2sout divider */
+#if 0
+ cgu_audio &= ~(511 << 14); /* clear i2sin divider */
+ cgu_audio |= divider << 14; /* set new i2sin divider */
+#endif
+ CGU_AUDIO = cgu_audio; /* write back register */
}
size_t pcm_get_bytes_waiting(void)