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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
import { CPU } from '../cpu/cpu';
import { AVRIOPort, portBConfig, PinState } from './gpio';
const PINB = 0x23;
const DDRB = 0x24;
const PORTB = 0x25;
describe('GPIO', () => {
it('should invoke the listeners when the port is written to', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn();
cpu.writeData(DDRB, 0x0f);
port.addListener(listener);
cpu.writeData(PORTB, 0x55);
expect(listener).toHaveBeenCalledWith(0x55, 0);
expect(cpu.data[0x23]).toEqual(0x5); // PINB should return port value
});
it('should invoke the listeners when DDR changes (issue #28)', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn();
cpu.writeData(PORTB, 0x55);
port.addListener(listener);
cpu.writeData(DDRB, 0xf0);
expect(listener).toHaveBeenCalledWith(0x55, 0x55);
});
it('should invoke the listeners when pullup register enabled (issue #62)', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn();
port.addListener(listener);
cpu.writeData(PORTB, 0x55);
expect(listener).toHaveBeenCalledWith(0x55, 0);
});
it('should toggle the pin when writing to the PIN register', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn();
port.addListener(listener);
cpu.writeData(DDRB, 0x0f);
cpu.writeData(PORTB, 0x55);
cpu.writeData(PINB, 0x01);
expect(listener).toHaveBeenCalledWith(0x54, 0x55);
expect(cpu.data[PINB]).toEqual(0x4); // PINB should return port value
});
describe('removeListener', () => {
it('should remove the given listener', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn();
port.addListener(listener);
cpu.writeData(DDRB, 0x0f);
port.removeListener(listener);
cpu.writeData(PORTB, 0x99);
expect(listener).toBeCalledTimes(1);
});
});
describe('pinState', () => {
it('should return PinState.High when the pin set to output and HIGH', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
cpu.writeData(DDRB, 0x1);
cpu.writeData(PORTB, 0x1);
expect(port.pinState(0)).toEqual(PinState.High);
});
it('should return PinState.Low when the pin set to output and LOW', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
cpu.writeData(DDRB, 0x8);
cpu.writeData(PORTB, 0xf7);
expect(port.pinState(3)).toEqual(PinState.Low);
});
it('should return PinState.Input by default (reset state)', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
expect(port.pinState(1)).toEqual(PinState.Input);
});
it('should return PinState.InputPullUp when the pin is set to input with pullup', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
cpu.writeData(DDRB, 0);
cpu.writeData(PORTB, 0x2);
expect(port.pinState(1)).toEqual(PinState.InputPullUp);
});
it('should reflect the current port state when called inside a listener', () => {
// Related issue: https://github.com/wokwi/avr8js/issues/9
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn(() => {
expect(port.pinState(0)).toBe(PinState.High);
});
expect(port.pinState(0)).toBe(PinState.Input);
cpu.writeData(DDRB, 0x01);
port.addListener(listener);
cpu.writeData(PORTB, 0x01);
expect(listener).toHaveBeenCalled();
});
it('should reflect the current port state when called inside a listener after DDR change', () => {
// Related issue: https://github.com/wokwi/avr8js/issues/47
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
const listener = jest.fn(() => {
expect(port.pinState(0)).toBe(PinState.Low);
});
expect(port.pinState(0)).toBe(PinState.Input);
port.addListener(listener);
cpu.writeData(DDRB, 0x01);
expect(listener).toHaveBeenCalled();
});
});
describe('setPin', () => {
it('should set the value of the given pin', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
cpu.writeData(DDRB, 0);
port.setPin(4, true);
expect(cpu.data[0x23]).toEqual(0x10);
port.setPin(4, false);
expect(cpu.data[0x23]).toEqual(0x0);
});
it('should only update PIN register when pin in Input mode', () => {
const cpu = new CPU(new Uint16Array(1024));
const port = new AVRIOPort(cpu, portBConfig);
cpu.writeData(DDRB, 0x10);
cpu.writeData(PORTB, 0x0);
port.setPin(4, true);
expect(cpu.data[PINB]).toEqual(0x0);
cpu.writeData(DDRB, 0x0);
expect(cpu.data[PINB]).toEqual(0x10);
});
});
});
|
