pwm.lst

avr icc 平台开发的pwm模拟功能

    013A D141      RCALL	push_gset2
    013B 01B8      MOVW	R22,R16
(0008) 
(0009) void delay_nus(unsigned int n)       //N us延时函数
(0010)   {
(0011)    unsigned int i=0;
    013C 2744      CLR	R20
    013D 2755      CLR	R21
(0012)    for (i=0;i<n;i++)
    013E C003      RJMP	0x0142
(0013)    delay_1us();
    013F DFF8      RCALL	_delay_1us
    0140 5F4F      SUBI	R20,0xFF
    0141 4F5F      SBCI	R21,0xFF
    0142 1746      CP	R20,R22
    0143 0757      CPC	R21,R23
    0144 F3D0      BCS	0x013F
(0014)   }
    0145 D11B      RCALL	pop_gset2
    0146 9508      RET
(0015)   
(0016) void delay_1ms(void)                 //1ms延时函数
(0017)   {
(0018)    unsigned int i;
(0019)    for (i=0;i<(unsigned int)(XTAL*143-2);i++);
_delay_1ms:
  i                    --> R16
    0147 2700      CLR	R16
    0148 2711      CLR	R17
    0149 C002      RJMP	0x014C
    014A 5F0F      SUBI	R16,0xFF
    014B 4F1F      SBCI	R17,0xFF
    014C 330A      CPI	R16,0x3A
    014D E0E2      LDI	R30,2
    014E 071E      CPC	R17,R30
    014F F3D0      BCS	0x014A
(0020)   }
    0150 9508      RET
_delay_nms:
  i                    --> R20
  n                    --> R22
    0151 D12A      RCALL	push_gset2
    0152 01B8      MOVW	R22,R16
(0021)   
(0022) void delay_nms(unsigned int n)       //N ms延时函数
(0023)   {
(0024)    unsigned int i=0;
    0153 2744      CLR	R20
    0154 2755      CLR	R21
(0025)    for (i=0;i<n;i++)
    0155 C003      RJMP	0x0159
(0026)    {
(0027)       delay_1ms();
    0156 DFF0      RCALL	_delay_1ms
    0157 5F4F      SUBI	R20,0xFF
    0158 4F5F      SBCI	R21,0xFF
    0159 1746      CP	R20,R22
    015A 0757      CPC	R21,R23
    015B F3D0      BCS	0x0156
(0028)    }   
(0029)   }
    015C D104      RCALL	pop_gset2
    015D 9508      RET
FILE: D:\NEW\AVR_PWM\LCD.c
(0001) // ************************************************
(0002) // *** 采用4位数据线的1602液晶驱动程序 ***
(0003) // *** LCD.C ***
(0004) // ************************************************
(0005) #define ENABLE_BIT_DEFINITIONS
(0006) #define LCD_C
(0007) #include "includes.h"
(0008) // ***** Define I/O pins ***** //
(0009) #define BIT7 0x80
(0010) #define BIT6 0x40
(0011) #define BIT5 0x20
(0012) #define BIT4 0x10
(0013) #define BIT3 0x08
(0014) #define BIT2 0x04
(0015) #define BIT1 0x02
(0016) #define BIT0 0x01
(0017) // *** Set port for LCD Data Bus 8 bit mode *** //
(0018) #define LCD_OP_PORT PORTB
(0019) #define LCD_IP_PORT PINB
(0020) #define LCD_DIR_PORT DDRB
(0021) // *** Set LCD Enable Port and Bit values *** //
(0022) //#define LCD_EN LCD_OP_PORT.2
(0023) // *** Set LCD Register Select Port and Bit values *** //
(0024) //#define LCD_RS LCD_OP_PORT.0
(0025) // *** Set LCD Read/Write Port and Bit values *** //
(0026) //#define LCD_RW LCD_OP_PORT.1
(0027) /****************************************************************/
(0028)  
(0029)  #define LCD_EN  (1 << 2)     //引脚定义
(0030)  #define LCD_RS (1 << 0)
(0031)  #define LCD_RW (1 << 1)
(0032)  
(0033)  #define lcd_set_e()  (LCD_OP_PORT |= LCD_EN)   //置位与清零
(0034)  #define lcd_set_rs() (LCD_OP_PORT |= LCD_RS)
(0035)  #define lcd_set_rw() (LCD_OP_PORT |= LCD_RW)
(0036)  #define lcd_clear_e()  (LCD_OP_PORT &= ~LCD_EN)
(0037)  #define lcd_clear_rs() (LCD_OP_PORT &= ~LCD_RS)
(0038)  #define lcd_clear_rw() (LCD_OP_PORT &= ~LCD_RW)
(0039) /****************************************************************/
(0040) 
(0041) #define LCD_ON 0x0C
(0042) #define LCD_CURS_ON 0x0D
(0043) #define LCD_OFF 0x08
(0044) #define LCD_HOME 0x02
(0045) #define LCD_CLEAR 0x01
(0046) #define LCD_NEW_LINE 0xC0
(0047) #define LCD_FUNCTION_SET 0x28
(0048) #define LCD_MODE_SET 0x06
(0049) 
(0050) 
(0051) void LCD_INIT(void)
(0052) {
(0053) LCD_DIR_PORT = 0xff; // LCD port output
_LCD_INIT:
    015E EF8F      LDI	R24,0xFF
    015F BB87      OUT	0x17,R24
(0054) LCD_OP_PORT = 0x30; // Load high-data to port
    0160 E380      LDI	R24,0x30
    0161 BB88      OUT	0x18,R24
(0055) lcd_clear_rw(); // Set LCD to write
    0162 98C1      CBI	0x18,1
(0056) lcd_clear_rs(); // Set LCD to command
    0163 98C0      CBI	0x18,0
    0164 940E0282  CALL	<created procedures>
(0057) lcd_set_e(); // Write data to LCD
(0058) asm("nop");
(0059) asm("nop");
(0060) lcd_clear_e(); // Disable LCD
(0061) delay_nus(40);
    0166 E208      LDI	R16,0x28
    0167 E010      LDI	R17,0
    0168 DFD1      RCALL	_delay_nus
(0062) lcd_clear_rw() ; // Set LCD to write
    0169 98C1      CBI	0x18,1
(0063) lcd_clear_rs(); // Set LCD to command
    016A 98C0      CBI	0x18,0
    016B 940E0282  CALL	<created procedures>
(0064) lcd_set_e(); // Write data to LCD
(0065) asm("nop");
(0066) asm("nop");
(0067) lcd_clear_e(); // Disable LCD
(0068) delay_nus(40);
    016D E208      LDI	R16,0x28
    016E E010      LDI	R17,0
    016F DFCA      RCALL	_delay_nus
    0170 940E0282  CALL	<created procedures>
(0069) lcd_set_e(); // Write data to LCD
(0070) asm("nop");
(0071) asm("nop");
(0072) lcd_clear_e(); // Disable LCD
(0073) delay_nus(40);
    0172 E208      LDI	R16,0x28
    0173 E010      LDI	R17,0
    0174 DFC5      RCALL	_delay_nus
(0074) LCD_OP_PORT = 0x20;
    0175 E280      LDI	R24,0x20
    0176 BB88      OUT	0x18,R24
    0177 940E0282  CALL	<created procedures>
(0075) lcd_set_e(); // Write data to LCD
(0076) asm("nop");
(0077) asm("nop");
(0078) lcd_clear_e(); // Disable LCD
(0079) delay_nus(40);
    0179 E208      LDI	R16,0x28
    017A E010      LDI	R17,0
(0080) }
    017B CFBE      RJMP	_delay_nus
_LCD_Busy:
  low                  --> R20
  high                 --> R22
  temp                 --> R10
    017C D102      RCALL	push_gset3
(0081) //*****************************************************//
(0082) // This routine will return the busy flag from the LCD //
(0083) //*****************************************************//
(0084) void LCD_Busy ( void )
(0085) {
(0086) unsigned char temp,high;
(0087) unsigned char low;
(0088) LCD_DIR_PORT = 0x0f; // Make I/O Port input
    017D E08F      LDI	R24,0xF
    017E BB87      OUT	0x17,R24
(0089) do
(0090) {
(0091) temp=LCD_OP_PORT;
    017F B2A8      IN	R10,0x18
(0092) temp=temp&BIT3;
    0180 2D8A      MOV	R24,R10
    0181 7088      ANDI	R24,0x8
    0182 2EA8      MOV	R10,R24
(0093) LCD_OP_PORT=temp;
    0183 BB88      OUT	0x18,R24
(0094) lcd_set_rw(); // Set LCD to READ
    0184 9AC1      SBI	0x18,1
(0095) lcd_clear_rs();
    0185 98C0      CBI	0x18,0
(0096) lcd_set_e();
    0186 9AC2      SBI	0x18,2
(0097) delay_nus(3);
    0187 E003      LDI	R16,3
    0188 E010      LDI	R17,0
    0189 DFB0      RCALL	_delay_nus
(0098) high = LCD_IP_PORT; // read the high nibble.
    018A B366      IN	R22,0x16
(0099) lcd_clear_e(); // Disable LCD
    018B 98C2      CBI	0x18,2
(0100) lcd_set_e();
    018C 9AC2      SBI	0x18,2
(0101) asm("nop");
    018D 0000      NOP
(0102) asm("nop");
    018E 0000      NOP
(0103) low = LCD_IP_PORT; // read the low nibble.
    018F B346      IN	R20,0x16
(0104) lcd_clear_e(); // Disable LCD
    0190 98C2      CBI	0x18,2
(0105) } while(high & 0x80);
    0191 FD67      SBRC	R22,7
    0192 CFEC      RJMP	0x017F
(0106) delay_nus(20);
    0193 E104      LDI	R16,0x14
    0194 E010      LDI	R17,0
    0195 DFA4      RCALL	_delay_nus
(0107) }
    0196 D0CC      RCALL	pop_gset3
    0197 9508      RET
_LCD_WriteControl:
  temp                 --> R20
  CMD                  --> R22
    0198 D0E3      RCALL	push_gset2
    0199 2F60      MOV	R22,R16
(0108) // ********************************************** //
(0109) // *** Write a control instruction to the LCD *** //
(0110) // ********************************************** //
(0111) void LCD_WriteControl (unsigned char CMD)
(0112) {
(0113) char temp;
(0114) LCD_Busy(); // Test if LCD busy
    019A DFE1      RCALL	_LCD_Busy
    019B 940E028D  CALL	0x28D
(0115) LCD_DIR_PORT = 0xff; // LCD port output
(0116) temp=LCD_OP_PORT;
(0117) temp=temp&BIT3;
(0118) LCD_OP_PORT =(CMD & 0xf0)|temp; // Load high-data to port
(0119) lcd_clear_rw(); // Set LCD to write
(0120) lcd_clear_rs(); // Set LCD to command
    019D 98C0      CBI	0x18,0
    019E 940E0282  CALL	<created procedures>
    01A0 940E02A6  CALL	0x2A6
(0121) lcd_set_e(); // Write data to LCD
(0122) asm("nop");
(0123) asm("nop");
(0124) lcd_clear_e(); // Disable LCD
(0125) LCD_OP_PORT =(CMD<<4)|temp; // Load low-data to port
(0126) lcd_clear_rw(); // Set LCD to write
(0127) lcd_clear_rs(); // Set LCD to command
    01A2 98C0      CBI	0x18,0
    01A3 940E0282  CALL	<created procedures>
(0128) lcd_set_e(); // Write data to LCD
(0129) asm("nop");
(0130) asm("nop");
(0131) lcd_clear_e(); // Disable LCD
(0132) }
    01A5 D0BB      RCALL	pop_gset2
    01A6 9508      RET
_LCD_WriteData:
  temp                 --> R20
  Data                 --> R22
    01A7 D0D4      RCALL	push_gset2
    01A8 2F60      MOV	R22,R16
(0133) // ***************************************** //
(0134) // *** Write one byte of data to the LCD *** //
(0135) // ***************************************** //
(0136) void LCD_WriteData (unsigned char Data)
(0137) {
(0138) char temp;
(0139) LCD_Busy(); // Test if LCD Busy
    01A9 DFD2      RCALL	_LCD_Busy
    01AA 940E028D  CALL	0x28D
(0140) LCD_DIR_PORT = 0xFF; // LCD port output
(0141) temp=LCD_OP_PORT;
(0142) temp=temp&BIT3;
(0143) LCD_OP_PORT =(Data & 0xf0)|temp; // Load high-data to port
(0144) lcd_clear_rw() ; // Set LCD to write
(0145) lcd_set_rs(); // Set LCD to data
    01AC 9AC0      SBI	0x18,0
    01AD 940E0282  CALL	<created procedures>
    01AF 940E02A6  CALL	0x2A6
(0146) lcd_set_e(); // Write data to LCD
(0147) asm("nop");
(0148) asm("nop");
(0149) lcd_clear_e(); // Disable LCD
(0150) LCD_OP_PORT = (Data << 4)|temp; // Load low-data to port
(0151) lcd_clear_rw() ; // Set LCD to write
(0152) lcd_set_rs(); // Set LCD to data
    01B1 9AC0      SBI	0x18,0
    01B2 940E0282  CALL	<created procedures>
(0153) lcd_set_e(); // Write data to LCD
(0154) asm("nop");
(0155) asm("nop");
(0156) lcd_clear_e(); // Disable LCD
(0157) }
    01B4 D0AC      RCALL	pop_gset2
    01B5 9508      RET
(0158) // ********************************* //
(0159) // *** Initialize the LCD driver *** //
(0160) // ********************************* //
(0161) void Init_LCD(void)
(0162) {
(0163) LCD_INIT();
_Init_LCD:
    01B6 DFA7      RCALL	_LCD_INIT
(0164) LCD_WriteControl (LCD_FUNCTION_SET);
    01B7 E208      LDI	R16,0x28
    01B8 DFDF      RCALL	_LCD_WriteControl
(0165) LCD_WriteControl (LCD_OFF);
    01B9 E008      LDI	R16,0x8
    01BA DFDD      RCALL	_LCD_WriteControl
(0166) LCD_WriteControl (LCD_CLEAR);
    01BB E001      LDI	R16,1
    01BC DFDB      RCALL	_LCD_WriteControl
(0167) LCD_WriteControl (LCD_MODE_SET);
    01BD E006      LDI	R16,6
    01BE DFD9      RCALL	_LCD_WriteControl
(0168) LCD_WriteControl (LCD_ON);
    01BF E00C      LDI	R16,0xC
    01C0 DFD7      RCALL	_LCD_WriteControl
(0169) LCD_WriteControl (LCD_HOME);
    01C1 E002      LDI	R16,2
(0170) }
    01C2 CFD5      RJMP	_LCD_WriteControl
(0171) // ************************************************ //
(0172) // *** Clear the LCD screen (also homes cursor) *** //
(0173) // ************************************************ //
(0174) void LCD_Clear(void)
(0175) {
(0176) LCD_WriteControl(0x01);
_LCD_Clear:
    01C3 E001      LDI	R16,1
(0177) }
    01C4 CFD3      RJMP	_LCD_WriteControl
(0178) // *********************************************** //
(0179) // *** Position the LCD cursor at row 1, col 1 *** //
(0180) // *********************************************** //
(0181) void LCD_Home(void)
(0182) {
(0183) LCD_WriteControl(0x02);
_LCD_Home:
    01C5 E002      LDI	R16,2
(0184) }