Utility/Misc.

Macros
#define	WS_HZ_TO_DIVIDER(hz, clock_hz)
	Convert a frequency in Hertz to a clock divider value.

Functions
void	ws_portcpy (uint16_t port, const void __far *src, uint16_t count)
	Copy memory data to I/O ports, in order.
void	ws_delay_us (uint16_t us)
	Delay for a set number of microseconds.
void	ws_delay_ms (uint16_t ms)
	Delay for a set number of milliseconds.

Detailed Description

Macro Definition Documentation

WS_HZ_TO_DIVIDER

#define WS_HZ_TO_DIVIDER	(		hz,
			clock_hz )

Value:

(((clock_hz) + ((((hz) + 1)) >> 1)) / (hz))

Convert a frequency in Hertz to a clock divider value.

Definition at line 40 of file util.h.

Function Documentation

ws_delay_ms()

void ws_delay_ms

(

uint16_t

ms

)

Delay for a set number of milliseconds.

This is not recommended - use only when necessary! Not halting the CPU can lead to higher power consumption. The recommended approach is configuring an interrupt handler and using cpu_halt() - which will then sleep until any interrupt occurs.

Parameters

ms	Approximate number of milliseconds.

ws_delay_us()

void ws_delay_us

(

uint16_t

us

)

Delay for a set number of microseconds.

This is not recommended - use only when necessary! Not halting the CPU can lead to higher power consumption. The recommended approach is configuring an interrupt handler and using cpu_halt() - which will then sleep until any interrupt occurs.

Parameters

us	Approximate number of microseconds.

ws_portcpy()

void ws_portcpy	(	uint16_t	port,
		const void __far *	src,
		uint16_t	count )

Copy memory data to I/O ports, in order.

Parameters

port	Destination port.
src	Source pointer.
count	Count, in bytes.