Building a CAN API for Arduino DUE

Hardware Arduino Due
200

In the github CAN samples 1 & 2, I used four pins to control the two transceivers as follows:

CAN0 Transceiver

  • pin A7 (D61) to enable/disable the lowpower mode.
  • pin A8 (D62) to enable/disable the transceiver.

CAN1 Transceiver

  • pin A9 (D63) to enable/disable the lowpower mode.
  • pin A10 (D64) to enable/disable the transceiver.

But you can choose the pins that best suits your needs. For example, let's say you want to use pin 46 (D46) to enable the lowpower mode in the CAN1 transceiver, you have to use the following code:

SN65HVD234_SetRs(&can1_transceiver, 46);
SN65HVD234_EnableLowPower(&can1_transceiver);

Or, if you want to use pin A4 (D58) to restore normal lowpower mode (disable) in the CAN0 transceiver, you have to use the following code:

SN65HVD234_SetRs(&can0_transceiver, 58);
SN65HVD234_DisableLowPower(&can0_transceiver);

Similar case to enable or disable the transceivers. For example, you want to use pin 14 (D14) to disable the CAN0 transceiver, you have to use the following code:

SN65HVD234_SetEN(&can0_transceiver, 14);
SN65HVD234_Disable(&can0_transceiver);

I hope that the foregoing clarify a bit more the use of the control pins for the CAN transceivers.

EDIT: Of course, the four pins you choose and add to your sketch shall be connected to the transceivers pins EN ans Rs accordingly.