periph_cpu.h 1.79 KiB
/*
* Copyright (C) 2015-2017 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_nrf52
* @{
*
* @file
* @brief nRF52 specific definitions for handling peripherals
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*/
#ifndef PERIPH_CPU_H
#define PERIPH_CPU_H
#include "periph_cpu_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief System core clock speed, fixed to 64MHz for all NRF52x CPUs
*/
#define CLOCK_CORECLOCK (64000000U)
/**
* @brief Redefine some peripheral names to unify them between nRF51 and 52
* @{
*/
#define UART_IRQN (UARTE0_UART0_IRQn)
#define SPI_SCKSEL (dev(bus)->PSEL.SCK)
#define SPI_MOSISEL (dev(bus)->PSEL.MOSI)
#define SPI_MISOSEL (dev(bus)->PSEL.MISO)
/** @} */
/**
* @brief Override ADC resolution values
* @{
*/
#define HAVE_ADC_RES_T
typedef enum {
ADC_RES_6BIT = 0xf0, /**< not supported by hardware */
ADC_RES_8BIT = 0x00, /**< ADC resolution: 8 bit */
ADC_RES_10BIT = 0x01, /**< ADC resolution: 10 bit */
ADC_RES_12BIT = 0x02, /**< ADC resolution: 12 bit */
ADC_RES_14BIT = 0xf1, /**< supported with oversampling */
ADC_RES_16BIT = 0xf2 /**< not supported by hardware */
} adc_res_t;
/** @} */
/**
* @name ADC configuration, valid for all boards using this CPU
*
* The NRF52832 has a fixed mapping of ADC pins and a fixed number of ADC channels,
* so this ADC configuration is valid for all boards using this CPU. No need for
* any board specific configuration.
*/
#define ADC_NUMOF (8U)
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_H */
/** @} */