当我第一次启动并写入时,我尝试使用节点串行端口在edc中写入,这是成功的,但第二次尝试返回错误,第三次尝试成功相同的行为继续
错误:
[Error: Writing to COM port (WriteFileEx): Invalid handle]
Error [ERR_STREAM_DESTROYED]: Cannot call write after a stream was destroyed
at onwriteError (internal/streams/writable.js:389:22)
at onwrite (internal/streams/writable.js:426:7)
我已经附上了从write Execution获得的日志
[Error: Writing to COM port (WriteFileEx): Invalid handle]
Error [ERR_STREAM_DESTROYED]: Cannot call write after a stream was destroyed
我在每个事务之后关闭端口(port.close()),并在每个事务开始时初始化节点串行端口对象
代码:
const port = new SerialPort(serialPortConfig, { baudRate: parseInt(baudRateConfig) }).setEncoding('hex');
const parser = new Readline();
port.pipe(parser);
port.write(data, (writeError) => {
if (writeError) {
console.log('[inside writeAndDrain write error::', writeError);
}
})
port.drain((drainError) => {
if (drainError) {
console.log('[inside writeAndDrain drain error::', drainError);
}
});
port.on('data', function (data) {
console.log('[response]:', data)
port.unpipe(parser);
port.destroy((destroyError) => {
console.log('[destroyError]:', destroyError)
})
port.close();
})
有谁能给我解决这个问题的办法吗?
暂无答案!
目前还没有任何答案,快来回答吧!