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-rw-r--r--src/cc1111/ao_timer.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cc1111/ao_timer.c b/src/cc1111/ao_timer.c
index 54af9605..75cc4ce8 100644
--- a/src/cc1111/ao_timer.c
+++ b/src/cc1111/ao_timer.c
@@ -95,6 +95,13 @@ ao_clock_init(void)
while (!(SLEEP & SLEEP_XOSC_STB))
;
+ /* Power down the unused HFRC oscillator */
+ SLEEP |= SLEEP_OSC_PD;
+
+ /* Wait for HFRC to power down */
+ while ((SLEEP & SLEEP_HFRC_STB) != 0)
+ ;
+
/* Crank up the timer tick and system clock speed */
CLKCON = ((CLKCON & ~(CLKCON_TICKSPD_MASK | CLKCON_CLKSPD_MASK)) |
(CLKCON_TICKSPD_1 | CLKCON_CLKSPD_1));