原文
PULSOUT Output a timed pulse by inverting a pin for
some time (resolution of 2 µs).作者: st860740 時間: 2012-9-6 21:32
解析度是2us 這個是什麼意思呢?
而420us脈衝寬 是說一個時脈的時間嗎?還是?
不太懂脈衝寬的意思作者: mzw2008 時間: 2012-9-7 01:03
送一個維持420us高態的訊號波過去
這是基本電學知識
出現了下面這段英文
不懂為什麼會這樣
Error using serial/fopen (line 72)
Open failed: Cannot connect to the COM5 port. Possible reasons are another
application is connected to the port or the port does not exist.
我檢查了連線
rs232drv
Serial Port Object : Serial-COM5
Communication Settings
Port: COM5
BaudRate: 19200
Terminator: 'LF'
Communication State
Status: closed
RecordStatus: off
Read/Write State
TransferStatus: idle
BytesAvailable: 0
ValuesReceived: 0
ValuesSent: 0
看不出哪邊有了問題
有人遇過這個狀況嗎作者: mzw2008 時間: 2012-9-15 11:48
Cannot connect to the COM5 port