bitband.h

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/******************************************************************************
 * The MIT License
 *
 * Copyright (c) 2011 LeafLabs, LLC.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *****************************************************************************/

#ifndef _BITBAND_H_
#define _BITBAND_H_

#include "hal_types.h"

#ifdef __cplusplus
  extern "C" {
#endif
 

static inline volatile uint32_t* __bb_addr(volatile void*,
                                         uint32_t,
                                         uint32_t,
                                         uint32_t);

static inline volatile uint32_t* bb_sramp(volatile void *address, uint32_t bit) {
    return __bb_addr(address, bit, SRAM1_BB_BASE, SRAM_BASE);
}

static inline uint8_t bb_sram_get_bit(volatile void *address, uint32_t bit) {
    return *bb_sramp(address, bit);
}

static inline void bb_sram_set_bit(volatile void *address,
                                   uint32_t bit,
                                   uint8_t val) {
    *bb_sramp(address, bit) = val;
}

static inline volatile uint32_t* bb_perip(volatile void *address, uint32_t bit) {
    return __bb_addr(address, bit, PERIPH_BB_BASE, PERIPH_BASE);
}

static inline uint8_t bb_peri_get_bit(volatile void *address, uint32_t bit) {
    return *bb_perip(address, bit);
}

static inline void bb_peri_set_bit(volatile void *address,
                                   uint32_t bit,
                                   uint8_t val) {
    *bb_perip(address, bit) = val;
}

static inline volatile uint32_t* __bb_addr(volatile void *address,
                                         uint32_t bit,
                                         uint32_t bb_base,
                                         uint32_t bb_ref) {
    return (volatile uint32_t*)(bb_base + ((uint32_t)address - bb_ref) * 32 +
                              bit * 4);
}

#ifdef __cplusplus
  }
#endif
 

#endif  /* _BITBAND_H_ */