#ifndef TIMER_H
#define TIMER_H

#include "../target/stm32f103xb.h"
#include "../config.h"
#include "rcc.h"

typedef void (*OnTick)(void);

//------------------------------------------------------------------------------
/** timer_wait_ms
 *  wait for ms milliseconds function
 */
int timer_wait_ms(TIM_TypeDef *tmr, uint16_t ms, OnTick cb);

/** timer_wait_us
 *   wait for us microseconds function
 */
int timer_wait_us(TIM_TypeDef *tmr, uint16_t us, OnTick cb);

//------------------------------------------------------------------------------
/** timer_tick_init
 *  setup timer to call cb function periodically, each tick_ms
 */
int timer_tick_init(TIM_TypeDef *tmr, uint16_t tick_ms, OnTick cb);

/** timer_set_period
 *  change the period, in ms when called after tick_init, 
 *  otherwise in whatever unit the timer is configured
 *  reset count when used
 */
int timer_set_period(TIM_TypeDef *tmr, uint16_t tick);

/** timer_start
 *  reset count and start counting
 */
void timer_start(TIM_TypeDef *tmr);

/** timer_stop
 *  stop counting
 */
void timer_stop(TIM_TypeDef *tmr);

//------------------------------------------------------------------------------
/** timer_enc_init
 *  setup timer to read encoder output and keep track of it's position in the
 *  CNT register whithout using CPU time
 */
int timer_enc_init(TIM_TypeDef* tmr);

//------------------------------------------------------------------------------
//#define PWM_CHANNEL_1		0
//#define PWM_CHANNEL_2		1
//#define PWM_CHANNEL_3		2
//#define PWM_CHANNEL_4		3
//
///** pwm_init
// *  setup pwm timer period, each tick_ms
// */
//int pwm_init(TIM_TypeDef *pwm, uint32_t period_ms, OnTick cb);
//
///** pwm_channel_enable
// *  set up pwm channel
// */
//int pwm_channel_enable(TIM_TypeDef *pwm, uint32_t channel, uint32_t dutycycle, uint32_t oe);
//
///** pwm_channel_disable
// *  disable pwm channel
// */
//int pwm_channel_disable(TIM_TypeDef *pwm, uint32_t channel);
//
///** pwm_channel_set
// *  set up dutycycle for pwm channel
// */
//int pwm_channel_set(TIM_TypeDef *pwm, uint32_t channel, uint32_t dutycycle);
//
///** pwm_start
// *  start counting
// */
//#define pwm_start(pwm)	timer_start(pwm)
//
///** pwm_stop
// *  stop and reset counting
// */
//#define pwm_stop(pwm)	timer_stop(pwm)

#endif