LPCxpresso55s36 -EVK CAN hardware setup

madhubanti — Wed, 29 Jan 2025 11:34:54 GMT

I am trying to run the mcan-interrupt transfer demo example. I connected the jumpers JP23 and JP24 to enable the CANH and CANL lines. But I am not able to successfully test the CAN working.

I read J48 and J49 also needs to be aligned for operation. But I am confused as they are already have the pins shorted.

Please guide me how to setup the CAN on the EVK board.

Re: LPCxpresso55s36 -EVK CAN hardware setup

Pablo_Ramos — Tue, 04 Feb 2025 20:50:03 GMT

Hi @madhubanti,

If you follow the readme file of the mcan-interrupt transfer demo example and short JP23 and JP24, what you are doing is disabling CANH and CANL bus line. JP48 and JP49 on the default setting (Pins 1-2 shorted) set the target MCU MCAN controller receive and transmit to PIO1_3 and PIO1_2 respectively.

See Table 6. LPCXpresso55S36 jumpers of LPCXpresso55S36 Development Board User Manual

Checking the schematic you could see that PIO1_3 and PIO1_2 are on J92.

Also, in order to complete the transmission two boards needs to be connected.

Best Regards,
Pablo

topic LPCxpresso55s36 -EVK CAN hardware setup in LPC Microcontrollers

LPCxpresso55s36 -EVK CAN hardware setup

Re: LPCxpresso55s36 -EVK CAN hardware setup