1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Copyright 2022 Birte Kristina Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef GPIO_H
#define GPIO_H
#include "gio.h"
class GPIO {
private:
GPIO(const GPIO ©);
public:
GPIO () {}
enum Pin : unsigned char {
a0 = 0, a1, a2, a3, a4, a5, a6, a7,
b0, b1, b2, b3, b4, b5, b6, b7,
PIN_INVALID
};
inline void setup() {
/*
* Default configuration:
* A0 A1 A2 b1 B2 as output, others as input.
*/
gioInit();
}
inline void led_on(unsigned char id = 0) {
if (id == 0) {
gioPORTB->DSET = 1U << 1;
} else {
gioPORTB->DSET = 1U << 2;
}
}
inline void led_off(unsigned char id = 0) {
if (id == 0) {
gioPORTB->DCLR = 1U << 1;
} else {
gioPORTB->DCLR = 1U << 2;
}
}
inline void led_toggle(unsigned char id = 0) {
if (id == 0) {
gioToggleBit(gioPORTB,1);
} else {
gioToggleBit(gioPORTB,2);
}
}
inline void input(unsigned char const pin) {
if (pin < b0) {
gioPORTA->DIR &= ~(1U << pin);
} else if (pin < PIN_INVALID) {
gioPORTB->DIR &= ~(1U << (pin - b0));
}
}
inline void input(unsigned char const pin, unsigned char const pull) {
// TODO
}
inline void output(unsigned char const pin) {
if (pin < b0) {
gioPORTA->DIR |= 1U << pin;
} else if (pin < PIN_INVALID) {
gioPORTB->DIR |= 1U << (pin - b0);
}
}
inline void output(unsigned char const pin, unsigned char const value) {
write(pin, value);
output(pin);
}
inline unsigned char read(unsigned char const pin) {
if (pin < b0) {
return gioPORTA->DIN & (1U << pin);
} else if (pin < PIN_INVALID) {
return gioPORTB->DIN & (1U << (pin - b0));
}
return 0;
}
inline void write(unsigned char const pin, unsigned char value) {
if (pin < b0) {
if (value) {
gioPORTA->DSET = 1U << pin;
} else {
gioPORTA->DCLR = 1U << pin;
}
} else if (pin < PIN_INVALID) {
if (value) {
gioPORTB->DSET = 1U << (pin - b0);
} else {
gioPORTB->DCLR = 1U << (pin - b0);
}
}
}
inline void write_mask(unsigned char const pin_base, unsigned char set_mask, unsigned char clear_mask) {
// TODO
}
};
extern GPIO gpio;
#endif
|
