#ifndef _SIMU_UART_H
#define _SIMU_UART_H

/*
___         _______                                 _______                 ___________________
   |       |       |       :       :       :       |       |       :       |                   
   | start | bit 0 | bit 1 : bit 2 : bit 3 : bit 4 | bit 5 | bit 6 : bit 7 | stop              
   |_______|       |_______:_______:_______:_______|       |_______:_______|                   
*/
/*
    readme: 8bit,no parity,1 stopbit
*/

#define   TimerClkFrequency (48000000)  //
#define   GPIOUartRxBufferSize (128)
#if      (GPIOUartRxBufferSize&(GPIOUartRxBufferSize-1))
    #warning [GPIOUartRxBufferSize] SHOULD BE POWER OF 2 FOR OPTIMISING
#endif
#if      (GPIOUartRxBufferSize>256)
    #error   [GPIOUartRxBufferSize] SHOULD <= 256
#endif

#define   GPIOUartRxReadPin()       {}    //Rx 读取GPIO电平
#define   GPIOUartRxIoIrqSet()      {}    //RX GPIO口外部中断设置
#define   GPIOUartRxIoIrqDisable()  {}    //RX GPIO口外部中断禁用
#define   GPIOUartRxIoIrqEnable()   {}    //RX GPIO口外部中断使能
#define   GPIOUartRxTimerIrqEnable(t)  {}  //Rx 定时器使能
#define   GPIOUartRxTimerIrqAdjust(t)  {}  //Rx 定时器(采样时间调整)
#define   GPIOUartRxTimerIrqDisable()  {}  //Rx 定时器禁用

#define GPIOUartTxIoInit()        {}  //TX GPIO口初始化 输出模式，缺省高电平输出
#define GPIOUartTxTimerInit(t)    {}  //TX 定时器初始化设置
#define GPIOUartTxTimerEnable()   {}  //使能TX定时器
#define GPIOUartTxTimerDisable()  {}  //禁用TX定时器
#define GPIOUartTxSetIoHigh()     {}  //TX口输出高电平
#define GPIOUartTxSetIoLow()      {}  //TX口输出低电平

enum UART_STATE
{
   UART_IDLE = 0,
   UART_START,
   UART_TRANSFERRING,
   UART_PARITY,
   UART_STOPn
};

/// parity mode
enum GPIO_UART_PARITY_MODE
{
    GPIO_UART_PARITY_MODE_NONE = 0,        
    GPIO_UART_PARITY_MODE_ODD,            
    GPIO_UART_PARITY_MODE_EVEN
};

void GPIOUartRxInit(int bandrate);
int  GPIOUartRxBufferRead(unsigned char *);
void GPIOUartTxInit(int bandrate);
void GPIOUartTxSend(unsigned char data);

#endif