You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
4 years ago
|
|
||
|
|
/**
|
||
|
|
* \file
|
||
|
|
*
|
||
|
|
* \brief SAM 32k Oscillators Controller.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
|
||
|
|
*
|
||
|
|
* \asf_license_start
|
||
|
|
*
|
||
|
|
* \page License
|
||
|
|
*
|
||
|
|
* Subject to your compliance with these terms, you may use Microchip
|
||
|
|
* software and any derivatives exclusively with Microchip products.
|
||
|
|
* It is your responsibility to comply with third party license terms applicable
|
||
|
|
* to your use of third party software (including open source software) that
|
||
|
|
* may accompany Microchip software.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
|
||
|
|
* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
|
||
|
|
* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
|
||
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
|
||
|
|
* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
|
||
|
|
* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
|
||
|
|
* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
|
||
|
|
* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
|
||
|
|
* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
|
||
|
|
* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
|
||
|
|
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
|
||
|
|
*
|
||
|
|
* \asf_license_stop
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#include <hpl_init.h>
|
||
|
|
#include <hpl_osc32kctrl_config.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Initialize 32 kHz clock sources
|
||
|
|
*/
|
||
|
|
void _osc32kctrl_init_sources(void)
|
||
|
|
{
|
||
|
|
void * hw = (void *)OSC32KCTRL;
|
||
|
|
uint16_t calib = 0;
|
||
|
|
|
||
|
|
#if CONF_XOSC32K_CONFIG == 1
|
||
|
|
hri_osc32kctrl_write_XOSC32K_reg(
|
||
|
|
hw,
|
||
|
|
OSC32KCTRL_XOSC32K_STARTUP(CONF_XOSC32K_STARTUP) | (CONF_XOSC32K_ONDEMAND << OSC32KCTRL_XOSC32K_ONDEMAND_Pos)
|
||
|
|
| (CONF_XOSC32K_RUNSTDBY << OSC32KCTRL_XOSC32K_RUNSTDBY_Pos)
|
||
|
|
| (CONF_XOSC32K_EN1K << OSC32KCTRL_XOSC32K_EN1K_Pos) | (CONF_XOSC32K_EN32K << OSC32KCTRL_XOSC32K_EN32K_Pos)
|
||
|
|
| (CONF_XOSC32K_XTALEN << OSC32KCTRL_XOSC32K_XTALEN_Pos) |
|
||
|
|
#ifdef CONF_XOSC32K_CGM
|
||
|
|
OSC32KCTRL_XOSC32K_CGM(CONF_XOSC32K_CGM) |
|
||
|
|
#endif
|
||
|
|
(CONF_XOSC32K_ENABLE << OSC32KCTRL_XOSC32K_ENABLE_Pos));
|
||
|
|
|
||
|
|
hri_osc32kctrl_write_CFDCTRL_reg(hw, (CONF_XOSC32K_CFDEN << OSC32KCTRL_CFDCTRL_CFDEN_Pos));
|
||
|
|
|
||
|
|
hri_osc32kctrl_write_EVCTRL_reg(hw, (CONF_XOSC32K_CFDEO << OSC32KCTRL_EVCTRL_CFDEO_Pos));
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if CONF_OSCULP32K_CONFIG == 1
|
||
|
|
calib = hri_osc32kctrl_read_OSCULP32K_CALIB_bf(hw);
|
||
|
|
hri_osc32kctrl_write_OSCULP32K_reg(hw,
|
||
|
|
#if CONF_OSCULP32K_CALIB_ENABLE == 1
|
||
|
|
OSC32KCTRL_OSCULP32K_CALIB(CONF_OSCULP32K_CALIB)
|
||
|
|
#else
|
||
|
|
OSC32KCTRL_OSCULP32K_CALIB(calib)
|
||
|
|
#endif
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if CONF_XOSC32K_CONFIG
|
||
|
|
#if CONF_XOSC32K_ENABLE == 1 && CONF_XOSC32K_ONDEMAND == 0
|
||
|
|
while (!hri_osc32kctrl_get_STATUS_XOSC32KRDY_bit(hw))
|
||
|
|
;
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
hri_osc32kctrl_write_RTCCTRL_reg(hw, OSC32KCTRL_RTCCTRL_RTCSEL(CONF_RTCCTRL));
|
||
|
|
(void)calib;
|
||
|
|
}
|