/// <summary>
/// 获取各个通道连接状态
/// </summary>
/// <param name="lightType">通道类型</param>
/// <returns>-1：函数执行失败，0：已连接光源，1：没有连接光源，2：短路保护3：过压保护4：过流保护</returns>
public int GetChannelState(LightChn lightType)
{
int i = 0;
unsafe
{
int *p = &i;
int ret = opt.GetChannelState(SwitchChannel(lightType), p);
if (ret == 0)
{
return(i);
}
return(-1);
}
}