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@@ -131,7 +131,8 @@ void RS485_Set_Interface(
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* ALGORITHM: none
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* NOTES: none
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*****************************************************************************/
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bool RS485_Interface_Valid(unsigned port_number)
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bool RS485_Interface_Valid(
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unsigned port_number)
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{
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HANDLE h = 0;
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DWORD err = 0;
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@@ -139,17 +140,12 @@ bool RS485_Interface_Valid(unsigned port_number)
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char ifname[255] = "";
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sprintf(ifname, "\\\\.\\COM%u", port_number);
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h = CreateFile(
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ifname,
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GENERIC_READ | GENERIC_WRITE, 0,
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NULL, OPEN_EXISTING, 0,
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NULL);
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h = CreateFile(ifname, GENERIC_READ | GENERIC_WRITE, 0, NULL,
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OPEN_EXISTING, 0, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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err = GetLastError();
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if ((err == ERROR_ACCESS_DENIED) ||
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(err == ERROR_GEN_FAILURE) ||
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(err == ERROR_SHARING_VIOLATION) ||
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(err == ERROR_SEM_TIMEOUT)) {
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if ((err == ERROR_ACCESS_DENIED) || (err == ERROR_GEN_FAILURE) ||
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(err == ERROR_SHARING_VIOLATION) || (err == ERROR_SEM_TIMEOUT)) {
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status = true;
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}
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} else {
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@@ -68,7 +68,8 @@ extern "C" {
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void RS485_Print_Error(
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void);
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bool RS485_Interface_Valid(unsigned port_number);
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bool RS485_Interface_Valid(
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unsigned port_number);
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#ifdef __cplusplus
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