/// <summary>
/// 读输入寄存器状态
/// </summary>
/// <param name="reg">寄存器名称</param>
/// <returns>返回输入状态 '0'或‘非0’,0xffff表示访问错误</returns>
private async Task <UInt16> ReadReg(ReadableRegs reg)
{
UInt16 val = 0;
byte[] ar = generate_read_command((UInt16)reg);
await Task.Run(() =>
{
bool wait;
//串口资源互斥锁
//Console.WriteLine($"Before wait, thread id is {Thread.CurrentThread.ManagedThreadId}");
wait = _spmutex.WaitOne(50);
if (!wait)
{
val = 0xffff;
}
else
{
//Console.WriteLine($"Fetch wait, thread id is {Thread.CurrentThread.ManagedThreadId}");
_sp.Write(ar, 0, ar.Length);
val = recv_proc((UInt16)reg);
_spmutex.ReleaseMutex();
}
//Console.WriteLine($"after wait, thread id is {Thread.CurrentThread.ManagedThreadId}");
}).ConfigureAwait(false);
return(val);
}
public UInt16 ReadReg(ReadableRegs rr)
{
UInt16 val = 0;
return(val);
}
