From c26619b71ebbaf1e68cb1eb23daff369a991fc18 Mon Sep 17 00:00:00 2001 From: Lars Op den Kamp Date: Fri, 3 Aug 2012 01:35:54 +0200 Subject: [PATCH] windows: update the error message when an error occurs while writing to the serial port --- src/lib/platform/windows/serialport.cpp | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/src/lib/platform/windows/serialport.cpp b/src/lib/platform/windows/serialport.cpp index ad7f871..c595468 100644 --- a/src/lib/platform/windows/serialport.cpp +++ b/src/lib/platform/windows/serialport.cpp @@ -100,7 +100,17 @@ void CSerialSocket::Shutdown(void) ssize_t CSerialSocket::Write(void* data, size_t len) { - return IsOpen() ? SerialSocketWrite(m_socket, &m_iError, data, len) : -1; + if (IsOpen()) + { + ssize_t iReturn = SerialSocketWrite(m_socket, &m_iError, data, len); + if (iReturn != len) + { + m_strError = "unable to write to the serial port"; + FormatWindowsError(GetLastError(), m_strError); + } + return iReturn; + } + return -1; } ssize_t CSerialSocket::Read(void* data, size_t len, uint64_t iTimeoutMs /* = 0 */) @@ -169,6 +179,7 @@ bool CSerialSocket::Open(uint64_t iTimeoutMs /* = 0 */) return false; } + m_strError.clear(); m_bIsOpen = true; return m_bIsOpen; } -- 2.34.1