Timer0 Mode2 ticks to duration/frequency convertions

frequency and ticks
Timer ticks to frequency and vice versa convertions
#define	timer0_mode2_ticks_to_Hz(ticks)   (timer_ticks_to_Hz(ticks, get_timer0_clock_divider(), get_frequency_divider_scale()))
	Converts ticks to timer overflow frequency for timer0 mode2.
#define	timer0_mode2_Hz_to_ticks(frequency)   (timer_Hz_to_ticks_8bit(frequency, get_timer0_clock_divider(), get_frequency_divider_scale()))
	Converts frequency corresponding to ticks for timer0 mode2.
#define	timer0_mode2_ticks_to_mcs(ticks)   (timer_8bit_ticks_to_mcs(ticks, get_timer0_clock_divider(), get_frequency_divider_scale()))
	Convert ticks count to microseconds.
#define	timer0_mode2_ms_to_ticks(ms)   (timer_ms_to_ticks(ms, get_timer0_clock_divider(), get_frequency_divider_scale()))
	Convert milliseconds to timer0 ticks.

timer start for frequency and ms
Start Timer for ms or frequency
#define	timer0_mode2_start_ms(ms)
	Start timer0 in mode 2 with ms duration.
#define	timer0_mode2_start_Hz(freq)
	Start timer0 in mode 2 with Hz frequency.
#define	timer0_mode2_delay_ms(ms)
	Run timer0 mode2 once and wait with program flow blocking timer not finished.

Detailed Description

Functions and data structures for converting timer ticks to frequency and times for timer0 mode2.

Author

Michael Golovanov

Macro Definition Documentation

timer0_mode2_delay_ms

#define timer0_mode2_delay_ms

(

ms

)

Value:

do                                                      \
{                                                       \
    uint16_t ticks = timer0_mode2_ms_to_ticks(ms);      \
    timer0_mode2_delay(ticks);                          \
} while(0);

Run timer0 mode2 once and wait with program flow blocking timer not finished.

Parameters

ms	uint16_t delay ms duration

timer0_mode2_Hz_to_ticks

#define timer0_mode2_Hz_to_ticks

(

frequency

)

(timer_Hz_to_ticks_8bit(frequency, get_timer0_clock_divider(), get_frequency_divider_scale()))

Converts frequency corresponding to ticks for timer0 mode2.

Call this method after timer0 is initialized and MCU clock frequency divider scale is set.

Warning

On result iverflow returns 0. Be careful.

Parameters

frequency

uint32_t frequency value in Hz. Should not be 0;

Returns

uint8_t timer0 ticks corresponding to frequency value

timer0_mode2_ms_to_ticks

#define timer0_mode2_ms_to_ticks

(

ms

)

(timer_ms_to_ticks(ms, get_timer0_clock_divider(), get_frequency_divider_scale()))

Convert milliseconds to timer0 ticks.

Parameters

ms	uint16_t ms to convert. Range is 1..~9000

Returns

uint16_t Number of timer ticks corresponding to the input time. Returns 0 if the result overflows uint16_t range.

timer0_mode2_start_Hz

#define timer0_mode2_start_Hz

(

freq

)

Value:

do                                                      \
{                                                       \
    uint8_t ticks = timer0_mode2_Hz_to_ticks(freq);     \
    timer0_mode2_start(ticks);                          \
} while (0);

Start timer0 in mode 2 with Hz frequency.

Parameters

freq	uint32_t timer overflow frequency in Hz

timer0_mode2_start_ms

#define timer0_mode2_start_ms

(

ms

)

Value:

do                                                      \
{                                                       \
    uint8_t ticks = timer0_mode2_ms_to_ticks(ms);       \
    timer0_mode2_start(ticks);                          \
} while (0);

Start timer0 in mode 2 with ms duration.

Parameters

ms	uint8_t timer overflow duration

timer0_mode2_ticks_to_Hz

#define timer0_mode2_ticks_to_Hz

(

ticks

)

(timer_ticks_to_Hz(ticks, get_timer0_clock_divider(), get_frequency_divider_scale()))

Converts ticks to timer overflow frequency for timer0 mode2.

The output frequency = (SYSclk/timer_clock_divider)/(1 + ticks) .

Call this method after timer0 is initialized and MCU clock frequency divider scale is set.

uint16 ticks used in timer mode 0, 1, 3. For timer mode2 (8 bit autoreladable timer) ticks can be in 0..255 range.

Parameters

ticks

uint16_t timer ticks count to covert

Returns

uint32_t frequency multiplied by 100 corresponding to ticks count

timer0_mode2_ticks_to_mcs

#define timer0_mode2_ticks_to_mcs

(

ticks

)

(timer_8bit_ticks_to_mcs(ticks, get_timer0_clock_divider(), get_frequency_divider_scale()))

Convert ticks count to microseconds.

Parameters

ticks

uint8_t ticks count.

Returns

uint16_t microseconds time corresponing to timer ticks.