power_management.h

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#ifndef POWER_MANAGEMENTH
#define POWER_MANAGEMENTH
 
#include <sys.h>
#include <bits.h>
#include <stdint.h>
 
#define WIRC_H_ADDRESS 0xf8
 
#define WIRC_L_ADDRESS 0xf9
 
 
#define WAKEUP_DEFAULT_FREQ 32768U
 
#define idle() (bit_set(PCON, SBIT0))
 
#define power_down()            \
do {                            \
    bit_set(PCON, SBIT1);       \
    __asm__("nop");             \
    __asm__("nop");             \
    __asm__("nop");             \
} while(0)
 
#define wakeup_timer_init(ticks)                        \
do {                                                    \
    WKTCH = (ticks >> 8) | 0x80;                        \
    WKTCL = ticks & 0xff;                               \
} while(0)
 
 
#define wakeup_timer_init_seconds(seconds)                          \
do {                                                                \
    uint16_t wakeup_freq = wakeup_timer_internal_clk_freq();        \
    if (!wakeup_freq) { wakeup_freq = WAKEUP_DEFAULT_FREQ; }        \
    uint16_t timer_ticks = seconds * (wakeup_freq >> 4);            \
    wakeup_timer_init(timer_ticks);                                 \
} while(0)
 
static volatile __idata uint8_t * const wirc_h_ptr = (__idata uint8_t *) WIRC_H_ADDRESS;
static volatile __idata uint8_t * const wirc_l_ptr = (__idata uint8_t *) WIRC_L_ADDRESS;
#define wakeup_timer_internal_clk_freq() (((uint16_t)*wirc_h_ptr << 8) | *wirc_l_ptr)
 
#define get_power_low_voltage_flag() (test_if_bit_set(PCON, 5))
 
#define clear_power_low_voltage_flag() (bit_clr(PCON, SBIT5))
 
#endif