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Renesas M32R/ECU Series User Manual

Renesas M32R/ECU Series
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13-81
13
32180 Group Users Manual (Rev.1.0)
CAN MODULE
13.6 Receiving Data Frames
13.6 Receiving Data Frames
13.6.1 Data Frame Receive Procedure
The following describes the procedure for receiving data frames.
(1) Initializing the CAN Message Slot Control Register
Initialize the CAN Message Slot Control Register for the slot in which to receive by writing H00 to the register.
(2) Confirming that reception is idle
Read the CAN Message Slot Control Register that has just been initialized and check the TRSTAT (Transmit/
Receive Status) bit to see that reception has stopped and remains idle. If this bit = "1", it means that the CAN
module is accessing the message slot. Therefore, wait until the bit is cleared to "0".
(3) Setting the receive ID
Set the desired receive ID in the message slot.
(4) Setting the Extended ID Register
Set the corresponding bit in the Extended ID Register to "0" if a standard frame is to be received, or "1" if an
extended frame is to be received.
(5) Setting the CAN Message Slot Control Register
Write H40 to the CAN Message Slot Control Register to set the RR (Receive Request) bit to "1".

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Renesas M32R/ECU Series Specifications

General IconGeneral
BrandRenesas
ModelM32R/ECU Series
CategoryComputer Hardware
LanguageEnglish

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