doc: complete the CAN blocks description

diff --git a/rpp/blocks/sfunction_canreceive.c b/rpp/blocks/sfunction_canreceive.c
index 6894536423a9b676592bb2dfa663f468605a6176..d52434c39145c8f4988dd58eafc055daff5d9e3b 100644 (file)
--- a/rpp/blocks/sfunction_canreceive.c
+++ b/rpp/blocks/sfunction_canreceive.c
@@ -96,6 +96,11 @@ Help: |
   The mailbox numbers are shared between CAN Transmit and CAN Receive
   blocks with the same CAN port (module) parameter.
 
   The mailbox numbers are shared between CAN Transmit and CAN Receive
   blocks with the same CAN port (module) parameter.
 

+  The order in which the messages are received and their priority depends on their
+  mailbox numbers. The lower the mailbox number is, the higher is the priority.
+  If you want to have the priority of the messages under control, you have to specify
+  the numbers of the mailboxes manually. 
+

   The output of this block is a message data in selected format: uint8, uint16, uint32
   or CAN\_MESSAGE. The CAN\_MESSAGE object can be unpacked by `CAN Unpack` block.
 
   The output of this block is a message data in selected format: uint8, uint16, uint32
   or CAN\_MESSAGE. The CAN\_MESSAGE object can be unpacked by `CAN Unpack` block.
 

diff --git a/rpp/blocks/sfunction_cantransmit.c b/rpp/blocks/sfunction_cantransmit.c
index a4152aae5aeda62ec7e9d1537fc327d00b70192f..b016e443cd0dbe40110591d23a63596bf37e38de 100644 (file)
--- a/rpp/blocks/sfunction_cantransmit.c
+++ b/rpp/blocks/sfunction_cantransmit.c
@@ -79,6 +79,11 @@ Help: |
   The mailbox numbers are shared between CAN Transmit and CAN Receive
   blocks with the same CAN port (module) parameter.
 
   The mailbox numbers are shared between CAN Transmit and CAN Receive
   blocks with the same CAN port (module) parameter.
 

+  The order in which the messages are transmitted depends on their mailbox numbers.
+  The lower the mailbox number is, the higher is the priority of the message and the
+  sooner will it be transmitted. If you want to have the priority of the messages
+  under control, you have to specify the numbers of the mailboxes manually. 
+

   In order to use this block, there must be a `CAN Configure` block in the model.
 
 Status: Stable
   In order to use this block, there must be a `CAN Configure` block in the model.
 
 Status: Stable