atmega16l_uart.s

电梯楼层采集器代码

; 
; 10： 256Word/0xf00； 
; 
; 11： 128Word/0xf80
; 
; 
; /*
; ATMEGA16L 配置为外部16M晶振的方法：
; 配置环境：SL-ISP V1.4.2.3
; 熔丝配置：以下仅注明需要打勾的地方
; 
; BODLEVEL=0    //很关键
; CKSEL=1111    //很关键
; SUT=01        //可根据自己需要调整
; BOOTSZ=00     //可根据自己需要调整
; CKOPT=0       //很关键
; SPIEN=0       //特别关键，想不勾也不可能，不过如果显示没勾上就意味着软件出
; //------------------------------------------------------------------------------
; /*
; 引导码：		2 byte		= 0xFEFE 
; 系统设备号      1 byte		= 0x02
; 这三个不管他
; 对这三个固定值后面的数据没个字节进行CRC16效验，
; 算法：
; void CRC16(unsigned int *crc,unsigned char chr).{.  data unsigned int tmp;..  tmp = *crc;.  *crc = (tmp << 8) ^ TableOfCRC16[chr ^ (tmp >> 8)];.}
; 最后两个字节就是CRC16的值：
;           UDR = CRC >> 8;
;           UDR = CRC;
; 这个就是发送CRC最后两位数据：
; 引导码：			2 byte		= 0xFEFE 
; 系统设备号          1 byte		= 0x02
; 控制器地址码：		1 byte		= 1 - 127（0xFF为广播地址，0x00为系统保留）
; 数据包长度：		2 byte		= 0 - 0x07FF，表示紧跟数据包长度；
; 数据包：			(变长)		长度可变，由数据包长度指定；
; 校验码：			2 byte		= 计算从地址码开始到数据包最后一个字节的CRC16码。
; */
; //CCITT CRC16
; flash unsigned int TableOfCRC16[256] = /*CRC16校验码表*/
; {
; 	0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
; 	0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
; 	0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
; 	0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
; 	0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
; 	0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
; 	0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
; 	0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
; 	0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
; 	0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
; 	0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
; 	0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
; 	0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
; 	0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
; 	0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
; 	0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
; 	0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
; 	0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
; 	0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
; 	0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
; 	0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
; 	0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
; 	0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
; 	0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
; 	0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
; 	0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
; 	0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
; 	0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
; 	0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
; 	0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
; 	0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
; 	0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0,
; };
; 
; /*计算单字符CRC16代码*/
; void CRC16(unsigned int *crc,unsigned char chr)
; {
	.dbline 292
;   unsigned int tmp;
;   tmp = *crc;
	movw R30,R16
	ldd R10,z+0
	ldd R11,z+1
	.dbline 293
;   *crc = (tmp << 8) ^ TableOfCRC16[chr ^ (tmp >> 8)];
	movw R2,R10
	mov R2,R3
	clr R3
	mov R30,R18
	clr R31
	eor R30,R2
	eor R31,R3
	lsl R30
	rol R31
	ldi R24,<_TableOfCRC16
	ldi R25,>_TableOfCRC16
	add R30,R24
	adc R31,R25
	lpm R2,Z+
	lpm R3,Z
	movw R4,R10
	mov R5,R4
	clr R4
	eor R4,R2
	eor R5,R3
	movw R30,R16
	std z+1,R5
	std z+0,R4
	.dbline -2
L2:
	.dbline 0 ; func end
	ld R11,y+
	ld R10,y+
	ret
	.dbsym r tmp 10 i
	.dbsym r chr 18 c
	.dbsym r crc 16 pi
	.dbend
	.dbfunc e Uart0_Init _Uart0_Init fV
	.even
_Uart0_Init::
	.dbline -1
	.dbline 299
; }
; 
; //------------------------------------------------------------------------------
; //串口初始化
; void Uart0_Init(void)
; {	 
	.dbline 300
; 	UCSRB = 0x00; //disable while setting baud rate
	clr R2
	out 0xa,R2
	.dbline 301
;  	UCSRA = 0x00;
	out 0xb,R2
	.dbline 303
; 	/*设置帧格式:8个数据位 1个停止位*/
; 	UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);//8位数据+1位STOP位 
	ldi R24,134
	out 0x20,R24
	.dbline 305
; 	/*设置波特率 9600*/ 
; 	UBRRL = 0x67; //set baud rate lo
	ldi R24,103
	out 0x9,R24
	.dbline 306
;     UBRRH = 0x00; //set baud rate hi
	out 0x20,R2
	.dbline 308
; 	/*接收结束中断使能/发送结束中断使能/接收器与发送器使能*/
; 	UCSRB = (1<<RXCIE)|(1<<TXCIE)|(1<<RXEN)|(1<<TXEN);
	ldi R24,216
	out 0xa,R24
	.dbline -2
L3:
	.dbline 0 ; func end
	ret
	.dbend
	.area vector(rom, abs)
	.org 44
	jmp _Uart0_rx_isr
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\Administrator\桌面\LCU904~1\固件程序\ATmega16L_Uart.C
	.area bss(ram, con, rel)
	.dbfile C:\DOCUME~1\Administrator\桌面\LCU904~1\固件程序\ATmega16L_Uart.C
L5:
	.blkb 1
L6:
	.blkb 2
L7:
	.blkb 2
L8:
	.blkb 2
	.area text(rom, con, rel)
	.dbfile C:\DOCUME~1\Administrator\桌面\LCU904~1\固件程序\ATmega16L_Uart.C
	.dbfunc e Uart0_rx_isr _Uart0_rx_isr fV
	.dbstruct 0 260 StructOfProtocol
	.dbfield 0 Address c
	.dbfield 1 Length i
	.dbfield 3 Command c
	.dbfield 4 Data A[256:256]c
	.dbend
	.dbstruct 0 4 data
	.dbfield 0 pc_rxd c
	.dbfield 1 pc_txd c
	.dbfield 2 c51_rxd c
	.dbfield 3 c51_txd c
	.dbend
	.dbsym s p_uart L8 pc
	.dbsym s Count L7 i
	.dbsym s CRC L6 i
	.dbsym s Status L5 c
;  communication -> R10,R11
;          p_buf -> R20,R21
;            tmp -> R22
	.even
_Uart0_rx_isr::
	st -y,R0
	st -y,R1
	st -y,R2
	st -y,R3
	st -y,R4
	st -y,R5
	st -y,R6
	st -y,R7
	st -y,R8
	st -y,R9
	st -y,R16
	st -y,R17
	st -y,R18
	st -y,R19
	st -y,R24
	st -y,R25
	st -y,R26
	st -y,R27
	st -y,R30
	st -y,R31
	in R0,0x3f
	st -y,R0
	xcall push_xgsetF03C
	.dbline -1
	.dbline 315
; }
; 
; //------------------------------------------------------------------------------
; //接收数据
; #pragma interrupt_handler Uart0_rx_isr:12 
; void Uart0_rx_isr(void) 
; { 
	.dbline 322
;     unsigned char tmp;
;     static unsigned char Status;
;     static unsigned int CRC,Count;
;     static unsigned char *p_uart;
;     struct StructOfProtocol *p_buf;
; 	struct data *communication;
;  	tmp = UDR;	//接收数据		
	in R22,0xc
	.dbline 323
; 	switch (Status)
	lds R20,L5
	clr R21
	cpi R20,0
	cpc R20,R21
	breq L12
X0:
	cpi R20,1
	ldi R30,0
	cpc R21,R30
	breq L13
X1:
	cpi R20,2
	ldi R30,0
	cpc R21,R30
	brne X18
	xjmp L18
X18:
X2:
	cpi R20,3
	ldi R30,0
	cpc R21,R30
	brne X19
	xjmp L21
X19:
X3:
	cpi R20,4
	ldi R30,0
	cpc R21,R30
	brne X20
	xjmp L22
X20:
X4:
	cpi R20,5
	ldi R30,0
	cpc R21,R30
	brne X21
	xjmp L23
X21:
X5:
	cpi R20,6
	ldi R30,0
	cpc R21,R30
	brne X22
	xjmp L26
X22:
X6:
	cpi R20,7
	ldi R30,0
	cpc R21,R30
	brne X23
	xjmp L29
X23:
X7:
	cpi R20,8
	ldi R30,0
	cpc R21,R30
	brne X24
	xjmp L30
X24:
X8:
	xjmp L9
L12:
	.dbline 326
; 	{
;       case 0:                              /*接收初始化*/
;          Count = 0;                        /*清计数器*/
	clr R2
	clr R3
	sts L7+1,R3
	sts L7,R2
	.dbline 327
;          Status++;
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
L13:
	.dbline 329
;       case 1:                              /*引导码接收*/
;          if (tmp == BOOT_CODE)             /*引导码字符确认*/
	cpi R22,254
	brne L14
X9:
	.dbline 330
;          {
	.dbline 331
;            if (++Count >= 2)     Status++; /*引导码长度确认*/
	lds R24,L7
	lds R25,L7+1
	adiw R24,1
	movw R2,R24
	sts L7+1,R3
	sts L7,R2
	cpi R24,2
	ldi R30,0
	cpc R25,R30
	brsh X25
	xjmp L10
X25:
X10:
	.dbline 331
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
	.dbline 332
;          }
	xjmp L10
L14:
	.dbline 333
;          else  Status = 0;
	clr R2
	sts L5,R2
	.dbline 334
;          break;
	xjmp L10
L18:
	.dbline 336
;       case 2:                       /*设备号接收*/
;          if (tmp == DEVICE_NUMBER) /*设备号确认*/
	cpi R22,2
	brne L19
X11:
	.dbline 337
; 		 {
	.dbline 338
; 			CRC = 0xffff;          /*初始化校验码*/
	ldi R24,65535
	ldi R25,255
	sts L6+1,R25
	sts L6,R24
	.dbline 339
; 			p_uart = Buffer485;    /*初始化数据接收指针*/
	ldi R24,<_Buffer485
	ldi R25,>_Buffer485
	sts L8+1,R25
	sts L8,R24
	.dbline 340
; 			Status++;
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
	.dbline 341
; 		 }
	xjmp L10
L19:
	.dbline 342
;          else   Status = 0;
	clr R2
	sts L5,R2
	.dbline 343
;          break;
	xjmp L10
L21:
	.dbline 345
;       case 3:                       /*地址码接收*/
;          *p_uart++ = tmp;           /*接收地址*/
	lds R30,L8
	lds R31,L8+1
	st Z+,R22
	sts L8+1,R31
	sts L8,R30
	.dbline 346
;          CRC16(&CRC,tmp);           /*数据校验*/
	mov R18,R22
	ldi R16,<L6
	ldi R17,>L6
	xcall _CRC16
	.dbline 347
;          Status++;
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
	.dbline 348
;          break;
	xjmp L10
L22:
	.dbline 350
;       case 4:                   /*包长度高位字节接收*/
;          *p_uart++ = tmp;        /*接收包长度低位字节*/
	lds R30,L8
	lds R31,L8+1
	st Z+,R22
	sts L8+1,R31
	sts L8,R30
	.dbline 351
;          CRC16(&CRC,tmp);        /*数据校验*/
	mov R18,R22
	ldi R16,<L6
	ldi R17,>L6
	xcall _CRC16
	.dbline 352
;          Status++;
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
	.dbline 353
;          break;
	xjmp L10
L23:
	.dbline 355
;       case 5:                                                 /*包长度低位字节接收*/
;          *p_uart++ = tmp;                                     /*接收包长度高位字节*/
	lds R30,L8
	lds R31,L8+1
	st Z+,R22
	sts L8+1,R31
	sts L8,R30
	.dbline 356
;          CRC16(&CRC,tmp);                                     /*数据校验*/
	mov R18,R22
	ldi R16,<L6
	ldi R17,>L6
	xcall _CRC16
	.dbline 357
;          p_buf = (struct StructOfProtocol *)Buffer485;
	ldi R20,<_Buffer485
	ldi R21,>_Buffer485
	.dbline 358
;          Count = p_buf->Length;
	movw R30,R20
	ldd R2,z+1
	ldd R3,z+2
	sts L7+1,R3
	sts L7,R2
	.dbline 359
;          if (Count && Count <= (256 - 8))  Status++; /*包长度检查*/
	tst R2
	brne X12
	tst R3
	breq L24
X12:
	ldi R24,248
	ldi R25,0
	cp R24,R2
	cpc R25,R3
	brlo L24
X13:
	.dbline 359
	lds R24,L5
	subi R24,255    ; addi 1
	sts L5,R24
	xjmp L10
L24:
	.dbline 360
;          else Status = 0;                                    /*包长度异常 - 状态返回*/
	clr R2
	sts L5,R2
	.dbline 361
;          break;