uart.lst

meg16 的所有功能实例

__start:
__text_start:
    002A E5CF      LDI	R28,0x5F
    002B E0D4      LDI	R29,4
    002C BFCD      OUT	0x3D,R28
    002D BFDE      OUT	0x3E,R29
    002E 51C0      SUBI	R28,0x10
    002F 40D0      SBCI	R29,0
    0030 EA0A      LDI	R16,0xAA
    0031 8308      STD	Y+0,R16
    0032 2400      CLR	R0
    0033 E6E0      LDI	R30,0x60
    0034 E0F0      LDI	R31,0
    0035 E010      LDI	R17,0
    0036 36EC      CPI	R30,0x6C
    0037 07F1      CPC	R31,R17
    0038 F011      BEQ	0x003B
    0039 9201      ST	R0,Z+
    003A CFFB      RJMP	0x0036
    003B 8300      STD	Z+0,R16
    003C E5E4      LDI	R30,0x54
    003D E0F0      LDI	R31,0
    003E E6A0      LDI	R26,0x60
    003F E0B0      LDI	R27,0
    0040 E010      LDI	R17,0
    0041 35E4      CPI	R30,0x54
    0042 07F1      CPC	R31,R17
    0043 F021      BEQ	0x0048
    0044 95C8      LPM
    0045 9631      ADIW	R30,1
    0046 920D      ST	R0,X+
    0047 CFF9      RJMP	0x0041
    0048 940E004B  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
FILE: E:\MYWORK~1\开发设计\EasyAVR\程序范例\Mega16程序包\完成整理\UARTEC~1\main.c
(0001) /****************************************Copyright (c)**************************************************
(0002) **                               ADEmbed Development Co.,LTD.                                    
(0003) **                                 http://www.adembed.com
(0004) **--------------File Info-------------------------------------------------------------------------------
(0005) ** File name:			main.c
(0006) ** Last modified Date:  2008-12-13
(0007) ** Last Version:		1.0
(0008) ** Descriptions:		UART Echo Test.
(0009) ** 
(0010) **------------------------------------------------------------------------------------------------------
(0011) ** Created by:			junbolu
(0012) ** Created date:		2008-12-13
(0013) ** Version:				1.0
(0014) ** Descriptions:		
(0015) **
(0016) **------------------------------------------------------------------------------------------------------
(0017) ** Modified by:
(0018) ** Modified date:
(0019) ** Version:
(0020) ** Descriptions:
(0021) **
(0022) **------------------------------------------------------------------------------------------------------
(0023) **ICC-AVR application builder : 2008-12-13
(0024) **Target : M16
(0025) **Crystal: 7.3728Mhz
(0026) *******************************************************************************************************/
(0027) 
(0028) #include <iom16v.h>
(0029) #include <macros.h>
(0030) #include "main.h"
(0031) #include "Define.h"
(0032) 
(0033) unsigned char GET_Rx;
(0034) unsigned char GET_RxNum;
(0035) unsigned char GET_RxBUF[10];
(0036) 
(0037) void Uart_Init(void); 
(0038) void USART_TXD(uint8 data);
(0039)  
(0040) void main(void)
(0041) {
(0042)  Uart_Init();                 //TART初始化
_main:
    004B D010      RCALL	_Uart_Init
(0043)  SEI();                       //全局中断使能
    004C 9478      BSET	7
(0044)  
(0045)  GET_Rx=False;
    004D 2422      CLR	R2
    004E 9220006B  STS	GET_Rx,R2
(0046)  for(;;)
(0047)      {
(0048)      if(GET_Rx==True)
    0050 9180006B  LDS	R24,GET_Rx
    0052 3081      CPI	R24,1
    0053 F7E1      BNE	0x0050
(0049)  	     {
(0050) 		 USART_TXD(GET_RxBUF[0]);
    0054 91000060  LDS	R16,GET_RxBUF
    0056 D00E      RCALL	_USART_TXD
(0051) 		 GET_Rx=False;
    0057 2422      CLR	R2
    0058 9220006B  STS	GET_Rx,R2
    005A CFF5      RJMP	0x0050
    005B 9508      RET
(0052)    		 } 
(0053)      }
(0054) }
(0055) 
(0056) //===============================================================
(0057) void Uart_Init(void)          //UART初始化
(0058)   { 
(0059)      
(0060)     //设置侦格式
(0061) 	//异步，8位数据，无奇偶校验，一个停止位，无倍速
(0062) 	UCSRC=(1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);
_Uart_Init:
    005C E886      LDI	R24,0x86
    005D BD80      OUT	0x20,R24
(0063) 	
(0064)     //设置波特率
(0065)     UBRRL= (F_osc/Baud_rate/16-1)%256;
    005E E28F      LDI	R24,0x2F
    005F B989      OUT	0x09,R24
(0066)     UBRRH= (F_osc/Baud_rate/16-1)/256;
    0060 2422      CLR	R2
    0061 BC20      OUT	0x20,R2
(0067) 
(0068) 	//使能接收中断，使能接收，使能发送
(0069)     UCSRB = (1<<RXCIE)|(1<<RXEN)|(1<<TXEN);
    0062 E988      LDI	R24,0x98
    0063 B98A      OUT	0x0A,R24
    0064 9508      RET
(0070)   }
(0071)   
(0072) 
(0073) //===============================================================
(0074) void USART_TXD(uint8 data) //发送采用查询方式
(0075) {
(0076) 	while( !(UCSRA & BIT(UDRE)) );
_USART_TXD:
  data                 --> R16
    0065 9B5D      SBIS	0x0B,5
    0066 CFFE      RJMP	_USART_TXD
(0077) 	UDR=data;
    0067 B90C      OUT	0x0C,R16
(0078) 	while( !(UCSRA & BIT(TXC )) );
    0068 9B5E      SBIS	0x0B,6
    0069 CFFE      RJMP	0x0068
(0079) 	UCSRA|=BIT(TXC);
    006A 9A5E      SBI	0x0B,6
    006B 9508      RET
_USART_RXC:
    006C 922A      ST	R2,-Y
    006D 938A      ST	R24,-Y
    006E B62F      IN	R2,0x3F
    006F 922A      ST	R2,-Y
(0080) }
(0081) 
(0082) //=======================================================================
(0083) 
(0084) #pragma interrupt_handler USART_RXC:12
(0085) void USART_RXC(void)
(0086) {
(0087)  GET_RxBUF[0]=UDR;
    0070 B02C      IN	R2,0x0C
    0071 92200060  STS	GET_RxBUF,R2
(0088)  GET_Rx=True;
FILE: <library>
    0073 E081      LDI	R24,1
    0074 9380006B  STS	GET_Rx,R24
    0076 9029      LD	R2,Y+
    0077 BE2F      OUT	0x3F,R2
    0078 9189      LD	R24,Y+
    0079 9029      LD	R2,Y+
    007A 9518      RETI