📄 delay_t0.lst
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187 =2 sbit T2 = P1^7;
188 =2 sbit CLKOUT = P1^6;
189 =2 sbit T2EX = P1^5;
190 =2 sbit INT2 = P1^4;
191 =2 sbit INT6 = P1^3;
192 =2 sbit INT5 = P1^2;
193 =2 sbit INT4 = P1^1;
194 =2 sbit INT3 = P1^0;
195 =2
196 =2 /* P4 */
197 =2 sbit RXDC = P4^7;
198 =2 sbit TXDC = P4^6;
199 =2 sbit INT8 = P4^5;
200 =2 sbit SLS = P4^4;
201 =2 sbit STO = P4^3;
202 =2 sbit SRI = P4^2;
203 =2 sbit SCLK = P4^1;
204 =2 sbit ADST = P4^0;
205 =2
206 =2 #endif
33 =1
34 =1 // Include oscillator / chip details here
35 =1 // (essential if generic delays / timeouts are used)
36 =1 // -
37 =1 // Oscillator / resonator frequency (in Hz) e.g. (11059200UL)
38 =1 #define OSC_FREQ (10000000UL)
39 =1
40 =1 // Number of oscillations per instruction (4, 6 or 12)
41 =1 // 12 - Original 8051 / 8052 and numerous modern versions
42 =1 // 6 - Various Infineon and Philips devices, etc.
43 =1 // 4 - Dallas, etc.
44 =1 //
45 =1 // Take care with Dallas devices
46 =1 // - Timers default to *12* osc ticks unless CKCON is modified
47 =1 // - If using generic code on a Dallas device, use 12 here
48 =1 #define OSC_PER_INST (6)
49 =1
50 =1 //------------------------------------------------------------------
51 =1 // SHOULD NOT NEED TO EDIT THE SECTIONS BELOW
52 =1 //------------------------------------------------------------------
53 =1 typedef unsigned char tByte;
54 =1 typedef unsigned int tWord;
55 =1 typedef unsigned long tLong;
56 =1
57 =1 // Misc #defines
58 =1 #ifndef TRUE
59 =1 #define FALSE 0
60 =1 #define TRUE (!FALSE)
61 =1 #endif
62 =1
63 =1 #define RETURN_NORMAL (bit) 0
64 =1 #define RETURN_ERROR (bit) 1
65 =1
66 =1
67 =1 //------------------------------------------------------------------
68 =1 // Interrupts
69 =1 // - see Chapter 13.
70 =1 //------------------------------------------------------------------
71 =1
72 =1 // Generic 8051/52 timer interrupts (used in most schedulers)
C51 COMPILER V7.06 DELAY_T0 12/25/2007 19:33:30 PAGE 6
73 =1 #define INTERRUPT_Timer_0_Overflow 1
74 =1 #define INTERRUPT_Timer_1_Overflow 3
75 =1 #define INTERRUPT_Timer_2_Overflow 5
76 =1
77 =1 // Additional interrupts (used in shared-clock schedulers)
78 =1 #define INTERRUPT_EXTERNAL_0 0
79 =1 #define INTERRUPT_EXTERNAL_1 2
80 =1 #define INTERRUPT_UART_Rx_Tx 4
81 =1 #define INTERRUPT_CAN_c515c 17
82 =1
83 =1 //------------------------------------------------------------------
84 =1 // Error codes
85 =1 // - see Chapter 14.
86 =1 //------------------------------------------------------------------
87 =1
88 =1 #define ERROR_SCH_TOO_MANY_TASKS (1)
89 =1 #define ERROR_SCH_CANNOT_DELETE_TASK (2)
90 =1
91 =1 #define ERROR_SCH_WAITING_FOR_SLAVE_TO_ACK (3)
92 =1 #define ERROR_SCH_WAITING_FOR_START_COMMAND_FROM_MASTER (3)
93 =1
94 =1 #define ERROR_SCH_ONE_OR_MORE_SLAVES_DID_NOT_START (4)
95 =1 #define ERROR_SCH_LOST_SLAVE (5)
96 =1
97 =1 #define ERROR_SCH_CAN_BUS_ERROR (6)
98 =1
99 =1 #define ERROR_I2C_WRITE_BYTE (10)
100 =1 #define ERROR_I2C_READ_BYTE (11)
101 =1 #define ERROR_I2C_WRITE_BYTE_AT24C64 (12)
102 =1 #define ERROR_I2C_READ_BYTE_AT24C64 (13)
103 =1 #define ERROR_I2C_DS1621 (14)
104 =1
105 =1 #define ERROR_USART_TI (21)
106 =1 #define ERROR_USART_WRITE_CHAR (22)
107 =1
108 =1 #define ERROR_SPI_EXCHANGE_BYTES_TIMEOUT (31)
109 =1 #define ERROR_SPI_X25_TIMEOUT (32)
110 =1 #define ERROR_SPI_MAX1110_TIMEOUT (33)
111 =1
112 =1 #define ERROR_ADC_MAX150_TIMEOUT (44)
113 =1
114 =1 #endif
115 =1
116 =1 /*------------------------------------------------------------------*-
117 =1 ---- END OF FILE -------------------------------------------------
118 =1 -*------------------------------------------------------------------*/
25
26 // ------ Private constants ----------------------------------------
27
28 // Timer preload values for use in simple (hardware) delays
29 // - Timers are 16-bit, manual reload ('one shot').
30 //
31 // NOTE: These values are portable but timings are *approximate*
32 // and *must* be checked by hand if accurate timing is required.
33 //
34 // Define Timer 0 / Timer 1 reload values for ~1 msec delay
35 // NOTE: Adjustment made to allow for function call overheard etc.
36 #define PRELOAD01 (65536 - (tWord)(OSC_FREQ / (OSC_PER_INST * 1063)))
37 #define PRELOAD01H (PRELOAD01 / 256)
38 #define PRELOAD01L (PRELOAD01 % 256)
39
40 /*------------------------------------------------------------------*-
C51 COMPILER V7.06 DELAY_T0 12/25/2007 19:33:30 PAGE 7
41
42 Hardware_Delay_T0()
43
44 Function to generate N millisecond delay (approx).
45
46 Uses Timer 0 (easily adapted to Timer 1).
47
48 -*------------------------------------------------------------------*/
49 void Hardware_Delay_T0(const tWord N)
50 {
51 1 tWord ms;
52 1
53 1 // Configure Timer 0 as a 16-bit timer
54 1 TMOD &= 0xF0; // Clear all T0 bits (T1 left unchanged)
55 1 TMOD |= 0x01; // Set required T0 bits (T1 left unchanged)
56 1
57 1 ET0 = 0; // No interupts
58 1
59 1 // Delay value is *approximately* 1 ms per loop
60 1 for (ms = 0; ms < N; ms++)
61 1 {
62 2 TH0 = PRELOAD01H;
63 2 TL0 = PRELOAD01L;
64 2
65 2 TF0 = 0; // clear overflow flag
66 2 TR0 = 1; // start timer 0
67 2
68 2 while (TF0 == 0); // Loop until Timer 0 overflows (TF0 == 1)
69 2
70 2 TR0 = 0; // Stop Timer 0
71 2 }
72 1 }
73
74 /*------------------------------------------------------------------*-
75 ---- END OF FILE -------------------------------------------------
76 -*------------------------------------------------------------------*/
C51 COMPILER V7.06 DELAY_T0 12/25/2007 19:33:30 PAGE 8
ASSEMBLY LISTING OF GENERATED OBJECT CODE
; FUNCTION _Hardware_Delay_T0 (BEGIN)
; SOURCE LINE # 49
;---- Variable 'N' assigned to Register 'R6/R7' ----
; SOURCE LINE # 50
; SOURCE LINE # 54
0000 5389F0 ANL TMOD,#0F0H
; SOURCE LINE # 55
0003 438901 ORL TMOD,#01H
; SOURCE LINE # 57
0006 C2A9 CLR ET0
; SOURCE LINE # 60
;---- Variable 'ms' assigned to Register 'R4/R5' ----
0008 E4 CLR A
0009 FD MOV R5,A
000A FC MOV R4,A
000B ?C0001:
000B C3 CLR C
000C ED MOV A,R5
000D 9F SUBB A,R7
000E EC MOV A,R4
000F 9E SUBB A,R6
0010 5016 JNC ?C0006
; SOURCE LINE # 61
; SOURCE LINE # 62
0012 758CF9 MOV TH0,#0F9H
; SOURCE LINE # 63
0015 758AE1 MOV TL0,#0E1H
; SOURCE LINE # 65
0018 C28D CLR TF0
; SOURCE LINE # 66
001A D28C SETB TR0
001C ?C0004:
; SOURCE LINE # 68
001C 308DFD JNB TF0,?C0004
001F ?C0005:
; SOURCE LINE # 70
001F C28C CLR TR0
; SOURCE LINE # 71
0021 0D INC R5
0022 BD0001 CJNE R5,#00H,?C0007
0025 0C INC R4
0026 ?C0007:
0026 80E3 SJMP ?C0001
; SOURCE LINE # 72
0028 ?C0006:
0028 22 RET
; FUNCTION _Hardware_Delay_T0 (END)
C51 COMPILER V7.06 DELAY_T0 12/25/2007 19:33:30 PAGE 9
NAME CLASS MSPACE TYPE OFFSET SIZE
==== ===== ====== ==== ====== ====
P1 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 0090H 1
P3 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00B0H 1
P4 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00E8H 1
tLong. . . . . . . . . . . . . . . . . TYPEDEF ----- U_LONG ----- 4
tByte. . . . . . . . . . . . . . . . . TYPEDEF ----- U_CHAR ----- 1
IEN0 . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00A8H 1
IEN1 . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00B8H 1
tWord. . . . . . . . . . . . . . . . . TYPEDEF ----- U_INT ----- 2
ADCON0 . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00D8H 1
SCON . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 0098H 1
TMOD . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 0089H 1
TCON . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 0088H 1
ET0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A9H 1
_Hardware_Delay_T0 . . . . . . . . . . PUBLIC CODE PROC 0000H -----
N. . . . . . . . . . . . . . . . . . * REG * DATA U_INT 0006H 2
ms . . . . . . . . . . . . . . . . . * REG * DATA U_INT 0004H 2
TF0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008DH 1
TH0. . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 008CH 1
TL0. . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 008AH 1
TR0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008CH 1
T2CON. . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00C8H 1
PSW. . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00D0H 1
IRCON. . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00C0H 1
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 41 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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