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更新校验函数

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CSSC-WORK\murmur 2024-09-12 16:44:24 +08:00
parent 036a74c7ba
commit f6a6dd5d29
1 changed files with 23 additions and 13 deletions
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36
tcl.c
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@ -143,34 +143,44 @@ void retryTimerCallback(MultiTimer *timer, void *userData)
printf("Timer 1 fired at %lu ms\n", getPlatformTicks());
}
/// @brief
/// @brief 计算异或XOR校验
/// @param data
/// @param len
/// @return 0->校验失败 1->校验成功
int crc(uint8_t *data, uint8_t len)
/// @return 校验结果
uint8_t bccCRC(uint8_t *data, uint8_t len)
{
return 0;
uint8_t crc = 0;
for (int i = 0; i < len; i++)
{
crc ^= data[i];
}
return crc;
}
/// @brief 检查数据有效性
/// @param data
/// @param len
/// @return 1->有效 0->无效
int isDataValid(uint8_t *data, uint8_t len)
/// @return 0->有效 1->帧头无效 2->帧尾无效 3->校验位无效
int chkDataValid(uint8_t *data, uint8_t len)
{
// 按帧发送数据
// 判断帧的完整性及校验位
if (data[0] != 0x5A || data[1] != 0xA5 || data[len - 1] != 0xED) // 帧头、帧尾校验
if (data[0] != 0x5A || data[1] != 0xA5) // 帧头校验
{
return 0;
return 1;
}
if (crc(data + 2, len - 2) != 0) // 校验位校验
if (data[len - 1] != 0xED) // 帧尾校验
{
return 0;
return 2;
}
return 1;
if (bccCRC(data + 2, len - 4) != data[len - 2]) // 校验位校验
{
return 3;
}
return 0;
}
/// @brief 用户接口接收数据回调
@ -208,7 +218,7 @@ void userRecDataCallback(uint8_t *data, uint8_t len)
}
else
{
if (isDataValid(data, len))
if (chkDataValid(data, len))
{
lineTransmitData(data, len);
}
@ -248,7 +258,7 @@ void lineRecCallback(uint8_t *data, uint8_t len)
}
else
{
if (isDataValid(data, len))
if (chkDataValid(data, len))
{
userTransmitData(data, len);
}