51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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Copyright 2017 fishpepper <AT> gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http:// www.gnu.org/licenses/>.
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author: fishpepper <AT> gmail.com
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*/
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#include "hal_clocksource.h"
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#include "hal_cc25xx.h"
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#include "led.h"
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void hal_clocksource_init(void) {
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// for debugging clocksource problems
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led_red_on();
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led_green_on();
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// power up osc (?)
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SLEEP &= ~CLOCKSOURCE_OSC_PD_BIT;
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// wait for XOSC stable
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while (!CLOCKSOURCE_XOSC_STABLE()) {}
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NOP();
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// start crystal osc as HS clocksource, OSC32 is int rc osc
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CLKCON = 0x80;
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// wait for selection to be active
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while (!CLOCKSOURCE_XOSC_STABLE()) {}
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NOP();
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// power down the unused oscillator
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SLEEP |= CLOCKSOURCE_OSC_PD_BIT;
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// for debugging clocksource problems
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led_red_off();
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led_green_off();
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}
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