nuttx/arch/arm/src/nrf52/nrf52_clockconfig.h
Alin Jerpelea 5867ddac59 arch: arm: nrf52: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-24 23:58:46 -07:00

80 lines
2.8 KiB
C

/****************************************************************************
* arch/arm/src/nrf52/nrf52_clockconfig.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_NRF52_NRF52_CLOCKCONFIG_H
#define __ARCH_ARM_SRC_NRF52_NRF52_CLOCKCONFIG_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Frequencies of internal clocks */
#define NRF52_SYSTEM_CLOCK 64000000 /* Default System clock value */
#define NRF52_RTC_CLOCK 32768 /* RTC oscillator 32 kHz output
* (32k_clk)
*/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: nrf52_clockconfig
*
* Description:
* Called to initialize the NRF52xxx. This does whatever setup is needed
* to put the MCU in a usable state. This includes the initialization of
* clocking using the settings in board.h. This function also performs
* other low-level chip as necessary.
*
****************************************************************************/
void nrf52_clockconfig(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_NRF52_NRF52_CLOCKCONFIG_H */