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comparison 1wire-delay.h @ 10:eb1faf51968e

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- Add some useful return values to search functions. - Remove some unecessary trailing \'s in macros - Replace some inline assembly I missed last time with C/macros.
author darius
date Mon, 12 Jul 2004 23:59:00 +0930
parents f9a085a0ba93
children 8dc98a293e43
comparison
equal deleted inserted replaced
9:7ed10c59ba06 10:eb1faf51968e
39 #define DELAY_A asm volatile( \ 39 #define DELAY_A asm volatile( \
40 "ldi r21, 6\n\t" \ 40 "ldi r21, 6\n\t" \
41 "L_%=: nop\n\t" \ 41 "L_%=: nop\n\t" \
42 "dec r21\n\t" \ 42 "dec r21\n\t" \
43 "brne L_%=\n\t" \ 43 "brne L_%=\n\t" \
44 ::: "r21"); 44 ::: "r21")
45 45
46 /* 64 usec */ 46 /* 64 usec */
47 #define DELAY_B asm volatile( \ 47 #define DELAY_B asm volatile( \
48 "ldi r21, 32\n\t" \ 48 "ldi r21, 32\n\t" \
49 "L_%=: nop\n\t" \ 49 "L_%=: nop\n\t" \
51 "nop\n\t" \ 51 "nop\n\t" \
52 "nop\n\t" \ 52 "nop\n\t" \
53 "nop\n\t" \ 53 "nop\n\t" \
54 "dec r21\n\t" \ 54 "dec r21\n\t" \
55 "brne L_%=\n\t" \ 55 "brne L_%=\n\t" \
56 ::: "r21"); 56 ::: "r21")
57 57
58 /* 60 usec */ 58 /* 60 usec */
59 #define DELAY_C asm volatile( \ 59 #define DELAY_C asm volatile( \
60 "ldi r21, 30\n\t" \ 60 "ldi r21, 30\n\t" \
61 "L_%=: nop\n\t" \ 61 "L_%=: nop\n\t" \
63 "nop\n\t" \ 63 "nop\n\t" \
64 "nop\n\t" \ 64 "nop\n\t" \
65 "nop\n\t" \ 65 "nop\n\t" \
66 "dec r21\n\t" \ 66 "dec r21\n\t" \
67 "brne L_%=\n\t" \ 67 "brne L_%=\n\t" \
68 ::: "r21"); 68 ::: "r21")
69 69
70 /* 10 usec */ 70 /* 10 usec */
71 #define DELAY_D asm volatile( \ 71 #define DELAY_D asm volatile( \
72 "ldi r21, 9\n\t" \ 72 "ldi r21, 9\n\t" \
73 "L_%=: nop\n\t" \ 73 "L_%=: nop\n\t" \
74 "dec r21\n\t" \ 74 "dec r21\n\t" \
75 "brne L_%=\n\t" \ 75 "brne L_%=\n\t" \
76 ::: "r21"); 76 ::: "r21")
77 77
78 /* 9 usec */ 78 /* 9 usec */
79 #define DELAY_E asm volatile( \ 79 #define DELAY_E asm volatile( \
80 "ldi r21, 8\n\t" \ 80 "ldi r21, 8\n\t" \
81 "L_%=: nop\n\t" \ 81 "L_%=: nop\n\t" \
82 "dec r21\n\t" \ 82 "dec r21\n\t" \
83 "brne L_%=\n\t" \ 83 "brne L_%=\n\t" \
84 ::: "r21"); 84 ::: "r21")
85 85
86 /* 55 usec */ 86 /* 55 usec */
87 #define DELAY_F asm volatile( \ 87 #define DELAY_F asm volatile( \
88 "ldi r21, 27\n\t" \ 88 "ldi r21, 27\n\t" \
89 "L_%=: nop\n\t" \ 89 "L_%=: nop\n\t" \
99 "nop\n\t" \ 99 "nop\n\t" \
100 "nop\n\t" \ 100 "nop\n\t" \
101 "nop\n\t" \ 101 "nop\n\t" \
102 "dec r21\n\t" \ 102 "dec r21\n\t" \
103 "brne L_%=\n\t" \ 103 "brne L_%=\n\t" \
104 ::: "r21"); 104 ::: "r21")
105 105
106 /* 0 usec */ 106 /* 0 usec */
107 #define DELAY_G 107 #define DELAY_G
108 108
109 /* 480 usec */ 109 /* 480 usec */
122 "nop\n\t" \ 122 "nop\n\t" \
123 "nop\n\t" \ 123 "nop\n\t" \
124 "nop\n\t" \ 124 "nop\n\t" \
125 "dec r21\n\t" \ 125 "dec r21\n\t" \
126 "brne L_%=\n\t" \ 126 "brne L_%=\n\t" \
127 ::: "r21"); 127 ::: "r21")
128 128
129 /* 70 usec */ 129 /* 70 usec */
130 #define DELAY_I asm volatile( \ 130 #define DELAY_I asm volatile( \
131 "ldi r21, 35\n\t" \ 131 "ldi r21, 35\n\t" \
132 "L_%=: nop\n\t" \ 132 "L_%=: nop\n\t" \
134 "nop\n\t" \ 134 "nop\n\t" \
135 "nop\n\t" \ 135 "nop\n\t" \
136 "nop\n\t" \ 136 "nop\n\t" \
137 "dec r21\n\t" \ 137 "dec r21\n\t" \
138 "brne L_%=\n\t" \ 138 "brne L_%=\n\t" \
139 ::: "r21"); 139 ::: "r21")
140 #else 140 #else
141 #error No 1 wire delay routines for selected clock speed 141 #error No 1 wire delay routines for selected clock speed
142 #endif 142 #endif
143 143