usart.h

基于EK—STM32开发板的LCD驱动编程实现

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USART.H  file

作者：Computer-lov
建立日期: 2008.07.29
修改日期: 2008.07.29
版本：V1.2
版权所有，盗版必究。
Copyright(C) Computer-lov 2008-2018
All rights reserved            
*******************************************************************/

#ifndef __USART_H__
#define __USART_H__

#define USART1_BASE 0x40013800
#define USART2_BASE 0x40004400
#define USART3_BASE 0x40004800

#define USART1_SR (*((unsigned int *)(USART1_BASE + 0x00)))
#define USART1_DR (*((unsigned int *)(USART1_BASE + 0x04)))
#define USART1_BRR (*((unsigned int *)(USART1_BASE + 0x08)))
#define USART1_CR1 (*((unsigned int *)(USART1_BASE + 0x0C)))
#define USART1_CR2 (*((unsigned int *)(USART1_BASE + 0x10)))
#define USART1_CR3 (*((unsigned int *)(USART1_BASE + 0x14)))
#define USART1_GTPR (*((unsigned int *)(USART1_BASE + 0x18)))

#define USART2_SR (*((unsigned int *)(USART2_BASE + 0x00)))
#define USART2_DR (*((unsigned int *)(USART2_BASE + 0x04)))
#define USART2_BRR (*((unsigned int *)(USART2_BASE + 0x08)))
#define USART2_CR1 (*((unsigned int *)(USART2_BASE + 0x0C)))
#define USART2_CR2 (*((unsigned int *)(USART2_BASE + 0x10)))
#define USART2_CR3 (*((unsigned int *)(USART2_BASE + 0x14)))
#define USART2_GTPR (*((unsigned int *)(USART2_BASE + 0x18)))

#define USART3_SR (*((unsigned int *)(USART3_BASE + 0x00)))
#define USART3_DR (*((unsigned int *)(USART3_BASE + 0x04)))
#define USART3_BRR (*((unsigned int *)(USART3_BASE + 0x08)))
#define USART3_CR1 (*((unsigned int *)(USART3_BASE + 0x0C)))
#define USART3_CR2 (*((unsigned int *)(USART3_BASE + 0x10)))
#define USART3_CR3 (*((unsigned int *)(USART3_BASE + 0x14)))
#define USART3_GTPR (*((unsigned int *)(USART3_BASE + 0x18)))

typedef struct 
{
 unsigned int PE       :1; //Parity Error.
 unsigned int FE       :1; //Framing Error.
 unsigned int NE       :1; //Noise Error Flag.
 unsigned int ORE      :1; //OverRun Error.
 unsigned int IDLE     :1; //IDLE line detected.
 unsigned int RXNE     :1; //Read Data Register Not Empty.
 unsigned int TC       :1; //Transmission Complete.
 unsigned int TXE      :1; //Transmit Data Register Empty
 unsigned int LBD      :1; //LIN Break Detection Flag
 unsigned int CTS      :1; //CTS Flag
 unsigned int Reserved1 :22; //Reserved, forced by hardware to 0.
}bUSART_SR;

#define pbUSART1_SR ((bUSART_SR*)(&USART1_SR))
#define pbUSART2_SR ((bUSART_SR*)(&USART2_SR))
#define pbUSART3_SR ((bUSART_SR*)(&USART3_SR))

typedef struct
{
 unsigned int DR       :8; //Data value.
 unsigned int Reserved1 :24; //Reserved, forced by hardware to 0.
}bUSART_DR;

#define pbUSART1_DR ((bUSART_DR*)(&USART1_DR))
#define pbUSART2_DR ((bUSART_DR*)(&USART2_DR))
#define pbUSART3_DR ((bUSART_DR*)(&USART3_DR))

typedef struct
{
 unsigned int DIV_Fraction :4; //fraction of DIV.
 unsigned int DIV_Mantissa :12; //mantissa of DIV.
 unsigned int Reserved1    :16; //Reserved, forced by hardware to 0.
}bUSART_BRR;

#define pbUSART1_BRR ((bUSART_BRR *)(&USART1_BRR))
#define pbUSART2_BRR ((bUSART_BRR *)(&USART2_BRR))
#define pbUSART3_BRR ((bUSART_BRR *)(&USART3_BRR))

typedef struct 
{
 unsigned int SBK          :1; //Send Break.
 unsigned int RWU          :1; //Receiver wakeup.
 unsigned int RE           :1; //Receiver Enable.
 unsigned int TE           :1; //Transmitter Enable.
 unsigned int IDLEIE       :1; //IDLE Interrupt Enable.
 unsigned int RXNEIE       :1; //RXNE Interrupt Enable.
 unsigned int TCIE         :1; //Transmission Complete Interrupt Enable.
 unsigned int TXEIE        :1; //TXE Interrupt Enable.
 unsigned int PEIE         :1; //PE Interrupt Enable.
 unsigned int PS           :1; //Parity Selection.
 unsigned int PCE          :1; //Parity Control Enable.
 unsigned int WAKE         :1; //Wakeup method.
 unsigned int M            :1; //word length.
 unsigned int UE           :1; //USART Enable.
 unsigned int Reserved1    :18; //Reserved, forced by hardware to 0.
}bUSART_CR1;

#define pbUSART1_CR1 ((bUSART_CR1*)(&USART1_CR1))
#define pbUSART2_CR1 ((bUSART_CR1*)(&USART2_CR1))
#define pbUSART3_CR1 ((bUSART_CR1*)(&USART3_CR1))

typedef struct
{
 unsigned int ADD          :4; //Address of the USART node.
 unsigned int Reserved1    :1; //Reserved, forced by hardware to 0.
 unsigned int LBDL         :1; //LIN Break Detection Length.
 unsigned int LBDIE        :1; //LIN Break Detection Interrupt Enable.
 unsigned int Reserved2    :1; //Reserved, forced by hardware to 0.
 unsigned int LBCL         :1; //Last Bit Clock pulse.
 unsigned int CPHA         :1; //Clock Phase
 unsigned int CPOL         :1; //Clock Polarity.
 unsigned int CLKEN        :1; //Clock Enable.
 unsigned int STOP         :2; //STOP bits.
 unsigned int LINEN        :1; //LIN mode enable
 unsigned int Reserved3    :17; //Reserved, forced by hardware to 0.
}bUSART_CR2;

#define pbUSART1_CR2 ((bUSART_CR2 *)(&USART1_CR2))
#define pbUSART2_CR2 ((bUSART_CR2 *)(&USART2_CR2))
#define pbUSART3_CR2 ((bUSART_CR2 *)(&USART3_CR2))

typedef struct
{
 unsigned int EIE          :1; //Error Interrupt Enable.
 unsigned int IREN         :1; //IrDA mode Enable.
 unsigned int IRLP         :1; //IrDA Low-Power.
 unsigned int HDSEL        :1; //Half-Duplex Selection.
 unsigned int NACK         :1; //Smartcard NACK enable.
 unsigned int SCEN         :1; //Smartcard mode enable.
 unsigned int DMAR         :1; //DMA Enable Receiver.
 unsigned int DMAT         :1; //DMA Enable Transmitter.
 unsigned int RTSE         :1; //RTS Enable.
 unsigned int CTSE         :1; //CTS Enable.
 unsigned int CTSIE        :1; // CTS Interrupt Enable.
 unsigned int Reserved1    :21; //Reserved, forced by hardware to 0.
}bUSART_CR3;

#define pbUSART1_CR3  ((bUSART_CR3 *)(&USART1_CR3))
#define pbUSART2_CR3  ((bUSART_CR3 *)(&USART2_CR3))
#define pbUSART3_CR3  ((bUSART_CR3 *)(&USART3_CR3))

typedef struct
{
 unsigned int PSC          :8;  //Prescaler value.
 unsigned int GT           :8;  //Guard time value.
 unsigned int Reserved1    :16; //Reserved, forced by hardware to 0.
}bUSART_GTPR;

#define pbUSART1_GTPR  ((bUSART_GTPR *)(&USART1_GTPR))
#define pbUSART2_GTPR  ((bUSART_GTPR *)(&USART2_GTPR))
#define pbUSART3_GTPR  ((bUSART_GTPR *)(&USART3_GTPR))

void Usart1Init(void);
unsigned char Usart1GetChar(void);
void Usart1PutChar(unsigned char Value);
void Usart1PutString(unsigned char *pString);

#endif