MIOS32_TIMER

Defines
#define	TIM_PERIPHERAL_FRQ   (MIOS32_SYS_CPU_FREQUENCY/4)
#define	NUM_TIMERS   3
#define	TIMER0_BASE   LPC_TIM0
#define	TIMER0_IRQ   TIMER0_IRQn
#define	TIMER0_IRQ_HANDLER   void TIMER0_IRQHandler(void)
#define	TIMER1_BASE   LPC_TIM1
#define	TIMER1_IRQ   TIMER1_IRQn
#define	TIMER1_IRQ_HANDLER   void TIMER1_IRQHandler(void)
#define	TIMER2_BASE   LPC_TIM2
#define	TIMER2_IRQ   TIMER2_IRQn
#define	TIMER2_IRQ_HANDLER   void TIMER2_IRQHandler(void)
#define	NUM_TIMERS   3
#define	TIMER0_BASE   TIM2
#define	TIMER0_RCC   RCC_APB1Periph_TIM2
#define	TIMER0_IRQ   TIM2_IRQn
#define	TIMER0_IRQ_HANDLER   void TIM2_IRQHandler(void)
#define	TIMER1_BASE   TIM3
#define	TIMER1_RCC   RCC_APB1Periph_TIM3
#define	TIMER1_IRQ   TIM3_IRQn
#define	TIMER1_IRQ_HANDLER   void TIM3_IRQHandler(void)
#define	TIMER2_BASE   TIM5
#define	TIMER2_RCC   RCC_APB1Periph_TIM5
#define	TIMER2_IRQ   TIM5_IRQn
#define	TIMER2_IRQ_HANDLER   void TIM5_IRQHandler(void)
#define	TIM_PERIPHERAL_FRQ   MIOS32_SYS_CPU_FREQUENCY
Functions
s32	MIOS32_TIMER_Init (u8 timer, u32 period, void(*_irq_handler)(void), u8 irq_priority)
s32	MIOS32_TIMER_ReInit (u8 timer, u32 period)
s32	MIOS32_TIMER_DeInit (u8 timer)

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Detailed Description

Timer functions for MIOS32

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Define Documentation

#define NUM_TIMERS   3

#define NUM_TIMERS   3

#define TIM_PERIPHERAL_FRQ   MIOS32_SYS_CPU_FREQUENCY

#define TIM_PERIPHERAL_FRQ   (MIOS32_SYS_CPU_FREQUENCY/4)

#define TIMER0_BASE   TIM2

#define TIMER0_BASE   LPC_TIM0

#define TIMER0_IRQ   TIM2_IRQn

#define TIMER0_IRQ   TIMER0_IRQn

#define TIMER0_IRQ_HANDLER   void TIM2_IRQHandler(void)

#define TIMER0_IRQ_HANDLER   void TIMER0_IRQHandler(void)

#define TIMER0_RCC   RCC_APB1Periph_TIM2

#define TIMER1_BASE   TIM3

#define TIMER1_BASE   LPC_TIM1

#define TIMER1_IRQ   TIM3_IRQn

#define TIMER1_IRQ   TIMER1_IRQn

#define TIMER1_IRQ_HANDLER   void TIM3_IRQHandler(void)

#define TIMER1_IRQ_HANDLER   void TIMER1_IRQHandler(void)

#define TIMER1_RCC   RCC_APB1Periph_TIM3

#define TIMER2_BASE   TIM5

#define TIMER2_BASE   LPC_TIM2

#define TIMER2_IRQ   TIM5_IRQn

#define TIMER2_IRQ   TIMER2_IRQn

#define TIMER2_IRQ_HANDLER   void TIM5_IRQHandler(void)

#define TIMER2_IRQ_HANDLER   void TIMER2_IRQHandler(void)

#define TIMER2_RCC   RCC_APB1Periph_TIM5

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Function Documentation

s32 MIOS32_TIMER_DeInit

(

u8

timer

)

De-Initialize a timer

Example:

   // disable timer
   MIOS32_TIMER_DeInit(0);

Parameters:

[in]

timer

(0..2)

Returns:

0 if timer has been disabled

-1 if invalid timer number

s32 MIOS32_TIMER_Init	(	u8	timer,
		u32	period,
		void(*)(void)	_irq_handler,
		u8	irq_priority
	)

Initialize a timer

Parameters:

[in]	timer	(0..2) Timer allocation on STM32: 0=TIM2, 1=TIM3, 2=TIM5
[in]	period	in uS accuracy (1..65536)
[in]	_irq_handler	(function name)
[in]	irq_priority,:	one of these values: MIOS32_IRQ_PRIO_LOW // lower than RTOS MIOS32_IRQ_PRIO_MID // higher than RTOS MIOS32_IRQ_PRIO_HIGH // same like SRIO, AIN, etc... MIOS32_IRQ_PRIO_HIGHEST // higher than SRIO, AIN, etc...

Example:

   // initialize timer for 1000 uS (= 1 mS) period
   MIOS32_TIMER_Init(0, 1000, MyTimer, MIOS32_IRQ_PRIO_MID);

this will call following function periodically:

 void MyTimer(void)
 {
    // your code
 }

Returns:

0 if initialisation passed

-1 if invalid timer number

-2 if invalid period

s32 MIOS32_TIMER_ReInit	(	u8	timer,
		u32	period
	)

Re-Initialize a timer with given period

Example:

   // change timer period to 2 mS
   MIOS32_TIMER_ReInit(0, 2000);

Parameters:

[in]	timer	(0..2) Timer allocation on STM32: 0=TIM2, 1=TIM3, 2=TIM5
[in]	period	in uS accuracy (1..65536)

Returns:

0 if initialisation passed

if invalid timer number

-2 if invalid period

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