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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
use std::{process::Command, time::Duration, fmt::Debug, thread::sleep};
use rand::Rng;
use serialport::SerialPort;
use crate::error::Error;
use crate::{request::Request, build_request};
macro_rules! log {
($text: literal, $($arg:tt)*) => (println!(concat!("[B15F] ", $text), $($arg)*));
($text: literal) => (println!(concat!("[B15F] ", $text)));
}
macro_rules! log_start {
($text: literal, $($arg:tt)*) => (print!(concat!("[B15F] ", $text, "... "), $($arg)*));
($text: literal) => (print!(concat!("[B15F] ", $text, "... ")));
}
macro_rules! log_end {
($text: literal, $($arg:tt)*) => (println!($text, $($arg)*));
($text: literal) => (println!($text));
}
pub struct B15F {
usart: Box<dyn SerialPort>
}
impl B15F {
const MSG_OK: u8 = 0xFF;
pub fn new() -> Result<B15F, Error> {
let port = B15F::init_connection()?;
let mut drv =B15F {
usart: port
};
log_start!("Testing connection");
let mut tries = 3;
while tries > 0 {
drv.discard()?;
match drv.test_connection() {
Ok(()) => break,
Err(_) => {} };
tries -= 1;
}
if tries == 0 {
return Err("Connection test failed. Are you using the newest version?".into());
}
log_end!("Ok!");
let info = drv.get_board_info()?;
log!("AVR firmware version: {} built at {} ({})", info[0], info[1], info[2]);
Ok(drv)
}
fn init_connection() -> Result<Box<dyn SerialPort>, Error> {
let devices = B15F::get_devices();
let device = match devices.first() {
Some(item) => item,
None => return Err("Failed to find adapter".into())
};
log!("Using adapter: {}", device);
log_start!("Establish connection with adapter");
let port = serialport::new(device, 57_600)
.timeout(Duration::from_millis(1000))
.open()?;
log_end!("Ok!");
Ok(port)
}
pub fn get_board_info(&mut self) -> Result<Vec<String>, Error> {
let mut info: Vec<String> = vec![];
self.usart.write(build_request!(Request::Info))?;
let mut data_count: [u8; 1] = [0;1];
self.usart.read(&mut data_count)?;
while data_count[0] > 0 {
let mut len: [u8; 1] = [0;1];
self.usart.read(&mut len)?;
let mut data: Vec<u8> = vec![0; len[0] as usize];
self.usart.read(data.as_mut_slice())?;
info.push(
data.into_iter()
.map(|c| char::from(c))
.collect::<String>()
);
sleep(Duration::from_millis(4)); data_count[0] -= 1;
}
let mut aw: [u8; 1] = [0; 1];
self.usart.read(&mut aw)?;
if aw[0] != B15F::MSG_OK {
return Err(format!("Board info is faulty: code {}", aw[0]).into());
}
Ok(info)
}
pub fn discard(&mut self) -> Result<(), Error> {
self.usart.clear(serialport::ClearBuffer::Output)?;
for _ in 0..16 {
self.usart.write(build_request![Request::Discard])?;
sleep(Duration::from_millis(4));
}
self.usart.clear(serialport::ClearBuffer::Input)?;
Ok(())
}
pub fn test_connection(&mut self) -> Result<(), Error> {
let dummy: u8 = rand::thread_rng().gen_range(0x00..=0xFF);
self.usart.write(build_request![Request::Test, dummy])?;
let mut buffer: [u8; 2]= [0; 2];
self.usart.read(&mut buffer)?;
if buffer[0] != B15F::MSG_OK || buffer[1] != dummy {
return Err("Test request failed".into());
}
Ok(())
}
#[cfg(any(target_arch = "arm", target_arch = "aarch64"))]
fn get_devices() -> Vec<String> {
let output = Command::new("bash")
.args(["-c", "ls /dev/ttyAMA*"])
.output()
.expect("Failed to get serial interface");
String::from_utf8(output.stdout)
.expect("Failed to convert stdout to string")
.split_ascii_whitespace()
.map(|item| item.into())
.collect()
}
#[cfg(not(target_arch = "arm"))]
#[cfg(not(target_arch = "aarch64"))]
fn get_devices() -> Vec<String> {
let output = Command::new("bash")
.args(["-c", "ls /dev/ttyUSB*"])
.output()
.expect("Failed to get serial interface");
String::from_utf8(output.stdout)
.expect("Failed to convert stdout to string")
.split_ascii_whitespace()
.map(|item| item.into())
.collect()
}
}
impl Debug for B15F {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
writeln!(f, "Baudrate: {}", self.usart.baud_rate().unwrap())?;
writeln!(f, "Data bits: {:?}", self.usart.data_bits().unwrap())?;
writeln!(f, "Parity: {:?}", self.usart.parity().unwrap())
}
}