magic settings for avr-gcc development

common.h

#ifndef COMMON_H__
#define COMMON_H__


#include <inttypes.h>
#include <stdarg.h>

#ifdef __cplusplus
extern "C" {
#endif


  /**
   * \addtogroup helpers_bitmanipulation Bit-manipulation macros
   * @{
   **/

  /** 32 bit bit accessing macro. **/
#define _BV32(i) (uint32_t)((uint32_t)(1UL << i))

  /** Bit-level access and test macros. **/
#define SET_BIT(port, bit)   ((port) |= (1 << (bit)))
#define CLEAR_BIT(port, bit) ((port) &= ~(1 << (bit)))
#define TOGGLE_BIT(port, bit) ((port) ^= (1 << (bit)))
#define IS_BIT_SET(port, bit) (((port) & (1 << (bit))) ? 1 : 0)
#define IS_BIT_CLEAR(port, bit) (((port) & (1 << (bit))) == 0 ? 1 : 0)

  /** 8-bit macros. **/
#define SET_BIT8(port, bit)   ((port) |= (uint8_t)(1 << (bit)))
#define CLEAR_BIT8(port, bit) ((port) &= (uint8_t)~(1 << (bit)))
#define IS_BIT_SET8(port, bit) (((port) & (uint8_t)(1 << (bit))) ? 1 : 0)
#define IS_BIT_CLEAR8(port, bit) (((port) & (uint8_t)(1 << (bit))) == 0 ? 1 : 0)

  /** 32-bit macros. **/
#define SET_BIT32(port, bit)   ((port) |= (uint32_t)(1UL << (bit)))
#define CLEAR_BIT32(port, bit) ((port) &= (uint32_t)~(1UL << (bit)))
#define TOGGLE_BIT32(port, bit) ((port) ^= (uint32_t)(1UL << (bit)))
#define IS_BIT_SET32(port, bit) (((port) & (uint32_t)(1UL << (bit))) ? 1 : 0)
#define IS_BIT_CLEAR32(port, bit) (((port) & (uint32_t)(1UL << (bit))) == 0 ? 1 : 0)

  /** 64-bit macros. **/
#define SET_BIT64(port, bit)   ((port) |= (uint64_t)(1ULL << (bit)))
#define CLEAR_BIT64(port, bit) ((port) &= (uint64_t)~(1ULL << (bit)))
#define TOGGLE_BIT64(port, bit) ((port) ^= (uint64_t)(1ULL << (bit)))
#define IS_BIT_SET64(port, bit) (((port) & (uint64_t)(1ULL << (bit))) ? 1 : 0)
#define IS_BIT_CLEAR64(port, bit) (((port) & (uint64_t)(1ULL << (bit))) == 0 ? 1 : 0)

  /** @} */

  /**
   * \addtogroup helpers_common_symbols Commonly used symbols and macros
   * @{
   **/

  /** Define commonly used C symbols. **/
#ifndef NULL
#define NULL 0
#endif
  
#define FALSE 0
#define TRUE 1

  /** Number of elements in a static array. **/
#define countof(arr) ((sizeof(arr)/sizeof(arr[0])))
  
  /** Compile-time assertion in C. **/
#define C_ASSERT(e) extern char __C_ASSERT__[(e)?1:-1]

  /** Compress a C structure to byte aligned boundaries. **/
#define PACKED __attribute__ ((packed))

  /** @} **/

  /**
   * \addtogroup helpers_math Math macros
   * @{
   **/

  /** Get the minimum of x and y. **/
#define MIN(x, y) ((x) > (y) ? (y) : (x))
  /** Get the maximum of x and y. **/
#define MAX(x, y) ((x) > (y) ? (x) : (y))
  /** Get the absolute value of x. **/
#define ABS(x) ((x) < 0 ? -(x) : (x))

#include <util/delay.h>
  /** Use the arduino convention to delay inside the code. **/
#define delay(ms) _delay_ms(ms)
#define delayMicroseconds(us) _delay_us(us)

    /**
   * @}
   */
	
#ifdef __cplusplus
}
#endif

#endif /* COMMON_H__ */