From de2e812b02a99a2f6d85f15a9600265931f6f6b0 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sat, 7 Dec 2013 09:38:50 -0800 Subject: [PATCH] src/cc1111: Turn off RC osc after xtal is running There's no reason to keep running the RC oscillator after we switch to the crystal, so turn it off. Signed-off-by: Keith Packard --- src/cc1111/ao_timer.c | 7 +++++++ 1 file changed, 7 insertions(+) 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)); -- 2.30.2