81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
//---
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// gint:clock - Clock signals, overclock, and standby modes
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//---
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#ifndef GINT_CLOCK
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#define GINT_CLOCK
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//---
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// Clock signals
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//---
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/* clock_frequency_t
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A dump of the Clock Pulse Generator's (CPG) configuration. Use the MPU
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detection functions from <gint/mpu.h> to use the correct fields. */
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typedef struct
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{
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union {
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int PLL1;
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int FLL;
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};
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union {
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int PLL2;
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int PLL;
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};
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int Bphi_div;
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int Iphi_div;
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int Pphi_div;
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union {
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int CKIO_f;
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int RTCCLK_f;
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};
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int Bphi_f;
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int Iphi_f;
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int Pphi_f;
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} clock_frequency_t;
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/* clock_freq() - get the frequency of the main clocks
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This function returns the address of a static object which is used by the
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module; this address never changes. */
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const clock_frequency_t *clock_freq(void);
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//---
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// Overclock
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//---
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/* TODO: All overclock */
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//---
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// Sleep functions
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//---
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/* sleep() - halt the processor until an event occurs
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The function stops the processor until an interrupt is accepted; the
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duration is not known in advance. This function should be used when the
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add-in is idle, for instance while waiting for keyboard input. */
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#define sleep() __asm__("sleep")
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/* sleep_us() - sleep for a definite duration in microseconds
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Stops the processor until [delay_us] microseconds have elapsed. Interrupts
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may occur during that time (especially timers firing), in which case the
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events will be treated as usual. The processor will resume sleeping after
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handling them.
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The user may choose the timer used to time out the sleep. Remember that only
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timers 0 to 2 have microsecond-level resolution; other timers count in units
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of about 30 us.
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@timer Which timer to use to time out the sleep
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@us_delay How long to sleep (in microseconds) */
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void sleep_us(int timer, int us_delay);
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/* sleep_ms() - sleep for a definite duration in milliseconds */
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#define sleep_ms(timer, ms_delay) sleep_us(timer, (ms_delay) * 1000)
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#endif /* GINT_CLOCK */
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