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Standard C library for AVR-GCC

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iocompat.h
1 /*
2  * ----------------------------------------------------------------------------
3  * "THE BEER-WARE LICENSE" (Revision 42):
4  * <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
5  * can do whatever you want with this stuff. If we meet some day, and you think
6  * this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
7  * ----------------------------------------------------------------------------
8  *
9  * IO feature compatibility definitions for various AVRs.
10  *
11  * $Id: iocompat_8h_source.html,v 1.1.1.6 2016/02/09 07:13:49 joerg_wunsch Exp $
12  */
13 
14 #if !defined(IOCOMPAT_H)
15 #define IOCOMPAT_H 1
16 
17 /*
18  * Device-specific adjustments:
19  *
20  * Supply definitions for the location of the OCR1[A] port/pin, the
21  * name of the OCR register controlling the PWM, and adjust interrupt
22  * vector names that differ from the one used in demo.c
23  * [TIMER1_OVF_vect].
24  */
25 #if defined(__AVR_AT90S2313__)
26 # define OC1 PB3
27 # define OCR OCR1
28 # define DDROC DDRB
29 # define TIMER1_OVF_vect TIMER1_OVF1_vect
30 #elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__)
31 # define OC1 PB1
32 # define DDROC DDRB
33 # define OCR OCR1
34 #elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || \
35  defined(__AVR_AT90S4434__) || defined(__AVR_AT90S8535__) || \
36  defined(__AVR_ATmega163__) || defined(__AVR_ATmega8515__) || \
37  defined(__AVR_ATmega8535__) || \
38  defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || \
39  defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) || \
40  defined(__AVR_ATmega1284P__)
41 # define OC1 PD5
42 # define DDROC DDRD
43 # define OCR OCR1A
44 # if !defined(TIMSK) /* new ATmegas */
45 # define TIMSK TIMSK1
46 # endif
47 #elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega48__) || \
48  defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
49 # define OC1 PB1
50 # define DDROC DDRB
51 # define OCR OCR1A
52 # if !defined(TIMSK) /* ATmega48/88/168 */
53 # define TIMSK TIMSK1
54 # endif /* !defined(TIMSK) */
55 #elif defined(__AVR_ATtiny2313__)
56 # define OC1 PB3
57 # define OCR OCR1A
58 # define DDROC DDRB
59 #elif defined(__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || \
60  defined(__AVR_ATtiny84__)
61 # define OC1 PA6
62 # define DDROC DDRA
63 # if !defined(OCR1A)
64 # /* work around misspelled name in avr-libc 1.4.[0..1] */
65 # define OCR OCRA1
66 # else
67 # define OCR OCR1A
68 # endif
69 # define TIMSK TIMSK1
70 # define TIMER1_OVF_vect TIM1_OVF_vect /* XML and datasheet mismatch */
71 #elif defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || \
72  defined(__AVR_ATtiny85__)
73 /* Timer 1 is only an 8-bit timer on these devices. */
74 # define OC1 PB1
75 # define DDROC DDRB
76 # define OCR OCR1A
77 # define TCCR1A TCCR1
78 # define TCCR1B TCCR1
79 # define TIMER1_OVF_vect TIM1_OVF_vect
80 # define TIMER1_TOP 255 /* only 8-bit PWM possible */
81 # define TIMER1_PWM_INIT _BV(PWM1A) | _BV(COM1A1)
82 # define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
83 #elif defined(__AVR_ATtiny26__)
84 /* Rather close to ATtinyX5 but different enough for its own section. */
85 # define OC1 PB1
86 # define DDROC DDRB
87 # define OCR OCR1A
88 # define TIMER1_OVF_vect TIMER1_OVF1_vect
89 # define TIMER1_TOP 255 /* only 8-bit PWM possible */
90 # define TIMER1_PWM_INIT _BV(PWM1A) | _BV(COM1A1)
91 # define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
92 /*
93  * Without setting OCR1C to TOP, the ATtiny26 does not trigger an
94  * overflow interrupt in PWM mode.
95  */
96 # define TIMER1_SETUP_HOOK() OCR1C = 255
97 #elif defined(__AVR_ATtiny261__) || defined(__AVR_ATtiny461__) || \
98  defined(__AVR_ATtiny861__)
99 # define OC1 PB1
100 # define DDROC DDRB
101 # define OCR OCR1A
102 # define TIMER1_PWM_INIT _BV(WGM10) | _BV(PWM1A) | _BV(COM1A1)
103 /*
104  * While timer 1 could be operated in 10-bit mode on these devices,
105  * the handling of the 10-bit IO registers is more complicated than
106  * that of the 16-bit registers of other AVR devices (no combined
107  * 16-bit IO operations possible), so we restrict this demo to 8-bit
108  * mode which is pretty standard.
109  */
110 # define TIMER1_TOP 255
111 # define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
112 #elif defined(__AVR_ATmega32__) || defined(__AVR_ATmega16__)
113 # define OC1 PD5
114 # define DDROC DDRD
115 # define OCR OCR1A
116 #elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) || \
117  defined(__AVR_ATmega165__) || defined(__AVR_ATmega169__) || \
118  defined(__AVR_ATmega325__) || defined(__AVR_ATmega3250__) || \
119  defined(__AVR_ATmega645__) || defined(__AVR_ATmega6450__) || \
120  defined(__AVR_ATmega329__) || defined(__AVR_ATmega3290__) || \
121  defined(__AVR_ATmega649__) || defined(__AVR_ATmega6490__) || \
122  defined(__AVR_ATmega640__) || \
123  defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || \
124  defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__) || \
125  defined(__AVR_ATmega32U4__)
126 # define OC1 PB5
127 # define DDROC DDRB
128 # define OCR OCR1A
129 # if !defined(PB5) /* work around missing bit definition */
130 # define PB5 5
131 # endif
132 # if !defined(TIMSK) /* new ATmegas */
133 # define TIMSK TIMSK1
134 # endif
135 #else
136 # error "Don't know what kind of MCU you are compiling for"
137 #endif
138 
139 /*
140  * Map register names for older AVRs here.
141  */
142 #if !defined(COM1A1)
143 # define COM1A1 COM11
144 #endif
145 
146 #if !defined(WGM10)
147 # define WGM10 PWM10
148 # define WGM11 PWM11
149 #endif
150 
151 /*
152  * Provide defaults for device-specific macros unless overridden
153  * above.
154  */
155 #if !defined(TIMER1_TOP)
156 # define TIMER1_TOP 1023 /* 10-bit PWM */
157 #endif
158 
159 #if !defined(TIMER1_PWM_INIT)
160 # define TIMER1_PWM_INIT _BV(WGM10) | _BV(WGM11) | _BV(COM1A1)
161 #endif
162 
163 #if !defined(TIMER1_CLOCKSOURCE)
164 # define TIMER1_CLOCKSOURCE _BV(CS10) /* full clock */
165 #endif
166 
167 #endif /* !defined(IOCOMPAT_H) */