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cc2538: sys_ctrl: Make it possible to use the 32-kHz crystal

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Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
Benoît Thébaudeau 2013-11-04 21:34:53 +01:00
parent a6227e1e3e
commit 47d570343e
3 changed files with 46 additions and 5 deletions
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17
cpu/cc2538/dev/sys-ctrl.h
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@ -228,11 +228,26 @@
#define SYS_CTRL_PMCTL_PM0 0x00000000 /**< PM0 */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SysCtrl 32-kHz oscillator selection
*
* Prefer the crystal oscillator for time accuracy, and the RC oscillator for
* cost and power consumption
* @{
*/
/* Defaults to RC oscillator unless the configuration tells us otherwise */
#ifdef SYS_CTRL_CONF_OSC32K_USE_XTAL
#define SYS_CTRL_OSC32K_USE_XTAL SYS_CTRL_CONF_OSC32K_USE_XTAL
#else
#define SYS_CTRL_OSC32K_USE_XTAL 0
#endif
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SysCtrl functions
* @{
*/
/** \brief Initialises the System Control Driver. The main purpose of this
* function is to power up and select clocks and oscillators */
* function is to power up and select clocks and oscillators
* \note This function depends on ioc_init() having been called beforehand. */
void sys_ctrl_init();
/** \brief Generates a warm reset through the SYS_CTRL_PWRDBG register */