#ifndef _IRDA_H_
#define _IRDA_H_

#include "stm32f10x_gpio.h"

enum
{
  CHECK_ODD,
  CHECK_EVEN,
  CHECK_NONE,
};

#define IRDA_BAUD                  1200            
#define IRDA_DATABITS              8
#define IRDA_CHECKBIT              CHECK_EVEN           
#define IRDA_STOPBIT               1

#define IRDA_BAUD_TIMER            TIM3
#define IRDA_BAUD_TIMER_CLK        RCC_APB1Periph_TIM3

#define IRDA_BAUD_IRQHandler       TIM3_IRQHandler

 
#define IRDA_BAUD_PRESC            100
#define IRDA_BAUD_PERIOD           (SystemCoreClock/IRDA_BAUD_PRESC/IRDA_BAUD)

#define IRDA_TX_PIN                GPIO_Pin_0
#define IRDA_TX_PORT               GPIOA
#define IRDA_TX_PORT_CLK           RCC_APB2Periph_GPIOA

#define IRDA_RX_PIN                GPIO_Pin_1
#define IRDA_RX_PORT               GPIOC
#define IRDA_RX_PORT_CLK           RCC_APB2Periph_GPIOC

#define IRDA_RX_PORT_SOURCE        GPIO_PortSourceGPIOC
#define IRDA_RX_PIN_SOURCE         GPIO_PinSource1
#define IRDA_RX_LINE               EXTI_Line1  
#define RX_START_IRQHandler        EXTI1_IRQHandler

#define IRDA_RX_BIT_VAL            GPIO_ReadInputDataBit(IRDA_RX_PORT, IRDA_RX_PIN)

#define IRDA_TX_BUFFER_SIZE        255     
#define IRDA_RX_BUFFER_SIZE        255

#define PWM_TIMER                  TIM2
#define PWM_TIMER_CLK              RCC_APB1Periph_TIM2
#define PWM_TIMER_CHANNEL          1
#define PWM_PRESC                  100         
#define PWM_FRE                    38000
#define PWM_PERIOD                 (SystemCoreClock/PWM_FRE/PWM_PRESC)

#define IRDA_BAUD_COFF             ((11.0 * 1000.0) / IRDA_BAUD)

void IRDA_PWM_Init();
void IRDA_GPIO_RX_init(void);
void IRDA_TX(u8 *buf, u8 length);
void baud_timer_init(u32 preriod);
void create_IRDA_task(void);
#endif