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修复：适配 CH9329F 71 字节参数响应

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mofeng-git
2026-09-29 20:32:29 +08:00
parent 7e6dc91095
commit 1e0b0407d3
1 changed files with 21 additions and 23 deletions
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44
src/hid/ch9329_proto.rs
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@@ -9,8 +9,11 @@ pub const RESPONSE_ERROR_MASK: u8 = 0xC0;
pub const DEFAULT_ADDR: u8 = 0x00;
pub const DEFAULT_BAUD_RATE: u32 = 9600;
pub const MAX_DATA_LEN: usize = 64;
pub const MAX_PACKET_SIZE: usize = 70;
const EXTENDED_PARAMETER_RESPONSE_SIZES: [usize; 2] = [72, 88];
// Includes the 71-byte CH9329F GET_PARA_CFG response.
pub const MAX_PACKET_SIZE: usize = 71;
// This CH9329F firmware keeps LEN=50 but appends 15 reserved bytes before the
// checksum, making the complete response 71 bytes.
const EXTENDED_PARAMETER_RESPONSE_SIZE: usize = 71;
pub mod cmd {
pub const GET_INFO: u8 = 0x01;
@@ -243,14 +246,10 @@ pub fn try_extract_response(buffer: &[u8]) -> Option<(Response, usize)> {
&& matches!(buffer[data_start], 0x00..=0x03 | 0x80..=0x83)
&& matches!(buffer[data_start + 1], 0x00..=0x02 | 0x80..=0x82);
if parameter_payload_is_plausible {
for extended_size in EXTENDED_PARAMETER_RESPONSE_SIZES {
let extended_end = offset + extended_size;
if buffer.len() >= extended_end {
let checksum_index = extended_end - 1;
if calculate_checksum(&buffer[offset..checksum_index]) != buffer[checksum_index]
{
continue;
}
let extended_end = offset + EXTENDED_PARAMETER_RESPONSE_SIZE;
if buffer.len() >= extended_end {
let checksum_index = extended_end - 1;
if calculate_checksum(&buffer[offset..checksum_index]) == buffer[checksum_index] {
return Some((
Response {
cmd,
@@ -263,7 +262,7 @@ pub fn try_extract_response(buffer: &[u8]) -> Option<(Response, usize)> {
}
}
if buffer.len() < offset + EXTENDED_PARAMETER_RESPONSE_SIZES[1] {
if buffer.len() < extended_end {
return None;
}
}
@@ -295,19 +294,18 @@ mod tests {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
];
for reserved_len in [16, 32] {
let mut frame = vec![0x57, 0xAB, DEFAULT_ADDR, 0x88, 50];
frame.extend_from_slice(&payload);
frame.extend_from_slice(&vec![0; reserved_len]);
frame.push(calculate_checksum(&frame));
let mut frame = vec![0x57, 0xAB, DEFAULT_ADDR, 0x88, 50];
frame.extend_from_slice(&payload);
frame.extend_from_slice(&[0; 15]);
frame.push(calculate_checksum(&frame));
assert!(Response::parse(&frame[..56]).is_none());
let (response, consumed) = try_extract_response(&frame).expect("extended response");
assert_eq!(response.cmd, 0x88);
assert_eq!(response.data, payload);
assert!(!response.is_error);
assert_eq!(consumed, frame.len());
}
assert_eq!(frame.len(), 71);
assert!(Response::parse(&frame[..56]).is_none());
let (response, consumed) = try_extract_response(&frame).expect("CH9329F response");
assert_eq!(response.cmd, 0x88);
assert_eq!(response.data, payload);
assert!(!response.is_error);
assert_eq!(consumed, frame.len());
}
#[test]