periph_cpu.h

Go to the documentation of this file.

/*
 * Copyright (C) 2015-2018 Freie Universität Berlin
 *               2020 Philipp-Alexander Blum <philipp-blum@jakiku.de>
 *
 * 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.
 */
 
#ifndef PERIPH_CPU_H
#define PERIPH_CPU_H
 
#include "periph_cpu_common.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifdef CPU_MODEL_NRF52832XXAA
#define ERRATA_SPI_SINGLE_BYTE_WORKAROUND (1)
#endif
 
#define CLOCK_CORECLOCK     (64000000U)
 
#define PERIPH_CLOCK        (16000000U)
 
#define SPI_SCKSEL          (dev(bus)->PSEL.SCK)
#define SPI_MOSISEL         (dev(bus)->PSEL.MOSI)
#define SPI_MISOSEL         (dev(bus)->PSEL.MISO)
#ifdef CPU_MODEL_NRF52832XXAA
#define UART_IRQN           (UARTE0_UART0_IRQn)
#endif
 
#define ADC_NUMOF           (9U)
 
#ifndef CONFIG_SPI_MBUF_SIZE
#define CONFIG_SPI_MBUF_SIZE    64
#endif
 
enum {
    NRF52_AIN0 = 0,         
    NRF52_AIN1 = 1,         
    NRF52_AIN2 = 2,         
    NRF52_AIN3 = 3,         
    NRF52_AIN4 = 4,         
    NRF52_AIN5 = 5,         
    NRF52_AIN6 = 6,         
    NRF52_AIN7 = 7,         
    NRF52_VDD  = 8,         
};
 
#ifndef DOXYGEN
 
#define HAVE_ADC_RES_T
typedef enum {
    ADC_RES_6BIT  = 0xf0,   
    ADC_RES_8BIT  = 0x00,   
    ADC_RES_10BIT = 0x01,   
    ADC_RES_12BIT = 0x02,   
    ADC_RES_14BIT = 0xf1,   
    ADC_RES_16BIT = 0xf2    
} adc_res_t;
#endif /* ndef DOXYGEN */
 
#ifndef DOXYGEN
 
#define HAVE_I2C_SPEED_T
typedef enum {
    I2C_SPEED_LOW       = 0xff,                         
    I2C_SPEED_NORMAL    = TWIM_FREQUENCY_FREQUENCY_K100,    
    I2C_SPEED_FAST      = TWIM_FREQUENCY_FREQUENCY_K400,    
    I2C_SPEED_FAST_PLUS = 0xfe,                         
    I2C_SPEED_HIGH      = 0xfd,                         
} i2c_speed_t;
#endif /* ndef DOXYGEN */
 
typedef struct {
    NRF_TWIM_Type *dev;         
    gpio_t scl;                 
    gpio_t sda;                 
    i2c_speed_t speed;          
} i2c_conf_t;
#define PERIPH_I2C_NEED_READ_REG
#define PERIPH_I2C_NEED_WRITE_REG
 
#define PWM_CHANNELS        (4U)
 
#define PWM_MODE(ud, pol)   (ud | (pol << 15))
 
#define HAVE_PWM_MODE_T
typedef enum {
    PWM_LEFT       = PWM_MODE(0, 1),    
    PWM_RIGHT      = PWM_MODE(0, 0),    
    PWM_CENTER     = PWM_MODE(1, 1),    
    PWM_CENTER_INV = PWM_MODE(1, 0)     
} pwm_mode_t;
#if defined(PWM_PRESENT) || DOXYGEN
typedef struct {
    NRF_PWM_Type *dev;                  
    gpio_t pin[PWM_CHANNELS];           
} pwm_conf_t;
#endif
 
#if !defined(CPU_MODEL_NRF52832XXAA)
 
typedef struct {
    NRF_UARTE_Type *dev;    
    gpio_t rx_pin;          
    gpio_t tx_pin;          
#ifdef MODULE_PERIPH_UART_HW_FC
    gpio_t rts_pin;         
    gpio_t cts_pin;         
#endif
    uint8_t irqn;           
} uart_conf_t;
#endif
 
typedef struct {
    NRF_SPIM_Type *dev; 
    gpio_t sclk;        
    gpio_t mosi;        
    gpio_t miso;        
#if ERRATA_SPI_SINGLE_BYTE_WORKAROUND
    uint8_t ppi;        
#endif
} spi_conf_t;
 
 
typedef void (*spi_twi_irq_cb_t)(void *arg);
 
void spi_twi_irq_register_spi(NRF_SPIM_Type *bus,
                              spi_twi_irq_cb_t cb, void *arg);
 
void spi_twi_irq_register_i2c(NRF_TWIM_Type *bus,
                              spi_twi_irq_cb_t cb, void *arg);
#ifdef __cplusplus
}
#endif
 
#endif /* PERIPH_CPU_H */