serial.c: force DTR serial connection flag to ON for Windows clients

On Linux and MacOS the serial connection handler has the DTR flag configured as ON by default. The Windows handler has it OFF by default, which prevents a successful serial connection because the driver expects it to be ON. This issue can be reproduced using UART over USB. Signed-off-by: AlexandraTrifan <[email protected]>
analogdevicesinc · May 24, 2024 · e02bc69 · e02bc69
1 parent 18df990
commit e02bc69
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/serial.c b/serial.c
@@ -375,6 +375,11 @@ static int apply_settings(struct sp_port *port, unsigned int baud_rate,
 {
 	int ret;
 
+#ifdef _WIN32
+	ret = libserialport_to_errno(sp_set_dtr(port, SP_DTR_ON));
+	if (ret)
+		return ret;
+#endif
 	ret = libserialport_to_errno(sp_set_baudrate(port, (int) baud_rate));
 	if (ret)
 		return ret;