uart.h

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/* uart.h */

#ifndef UART_H
#define UART_H


#ifdef __cplusplus
extern "C"
{
#endif

// 奇偶校验标识
#define UART_BIT_9_H                     0xA5
#define UART_BIT_9_L                     0x5A

// 波特率定义
#define BAUD_RATE                        1200
#define IR_CARRIER                      38000

// ACLK=32768,SMCLK=ACLK*32
#define SMCLK_FREQ                 (32768*32)

// generate IR carrier
#define IR_CAR_GEN    (SMCLK_FREQ/IR_CARRIER)

// BAUD_RATE
#define Bitime_5   (SMCLK_FREQ/(2*BAUD_RATE)) // ~ 0.5 bit length + small adjustment 13.6533
#define Bitime       ((SMCLK_FREQ/BAUD_RATE)) // 427us bit length ~ 2341 baud 27.30666

// 串口发送定义
#define N_HALF_CLK                         10
#define N_SEND_BIT                        200

// 串口接收定义
#define UART_HALF_BIT_TIME_1200            14
#define UART_BIT_TIME_1200                 27

// 串口发送波特率定义
#define UART_BOND_RATE_1200               200

#define FRAME_BUFFER_LEN 23

extern unsigned char _frm_buf[FRAME_BUFFER_LEN];
extern unsigned char _frm_ptr;
extern unsigned char _wait_time;

extern void uart_start_to_rx(void);
extern void uart_start_to_tx(void);

#ifdef __cplusplus
}
#endif


#endif /* UART_H */