modbus: copy trans_id & proto_id to response header

f3dora19 · cfriedt · commit 19c519eb05d6 · 2021-08-26T06:56:25.000-04:00
Copy Transaction and Protocol Identifiers to response header.

Signed-off-by: Luc Viala &lt;luc.viala19@gmail.com&gt;
diff --git a/subsys/modbus/modbus_server.c b/subsys/modbus/modbus_server.c
@@ -950,6 +950,8 @@ bool modbus_server_handler(struct modbus_context *ctx)
 	}
 
 	/* Prepare response header */
+	ctx->tx_adu.trans_id = ctx->rx_adu.trans_id;
+	ctx->tx_adu.proto_id = ctx->rx_adu.proto_id;
 	ctx->tx_adu.unit_id = addr;
 	ctx->tx_adu.fc = fc;
 

Original file line number	Diff line number	Diff line change
`@@ -950,6 +950,8 @@ bool modbus_server_handler(struct modbus_context *ctx)`
`950`	`950`	`}`
`951`	`951`
`952`	`952`	`/* Prepare response header */`
	`953`	`+ ctx->tx_adu.trans_id = ctx->rx_adu.trans_id;`
	`954`	`+ ctx->tx_adu.proto_id = ctx->rx_adu.proto_id;`
`953`	`955`	`ctx->tx_adu.unit_id = addr;`
`954`	`956`	`ctx->tx_adu.fc = fc;`
`955`	`957`