topic Re: CANopen LPCXpresso55S16 in LPC Microcontrollers

CANopen LPCXpresso55S16

ahmed007 — Wed, 05 Jul 2023 12:32:02 GMT

Hello,

Are there any practical instances where CANopen FD is utilized in real-world applications, apart from the standard SDK examples for LPCXpresso55S16?

Best regards,

Ahmed.

Re: CANopen LPCXpresso55S16

Alice_Yang — Thu, 06 Jul 2023 09:23:32 GMT

Hello @ahmed007

We only provide examples that can show the basic usage of every module of device, customer develop their own application based on it or just a reference.

Alice

Re: CANopen LPCXpresso55S16

ahmed007 — Mon, 10 Jul 2023 08:40:57 GMT

Dear @Alice_Yang ,

I appreciate your response. I am currently encountering an issue with the connection between the LPCXpresso55S16 and Raspberry Pi 4 using CANopen.

When the two boards are not connected, the LPCXpresso displays the following frames:

This indicates that the CANopen example is functioning on the board. On the other hand, the Raspberry Pi shows these frames:

This suggests that CANopen is also working properly on the Raspberry Pi. However, when we connect both boards together, we observe the following frames:

At this point, the LPCXpresso frames show the ESI flag (Error State Indicator), which prevents the LPCXpresso from entering the operational mode and consequently disrupts communication between the two boards.

Do you have any suggestions or solutions for this issue?

Thank you for your assistance.

Best regards,

Ahmed

Re: CANopen LPCXpresso55S16

Alice_Yang — Wed, 12 Jul 2023 08:55:13 GMT

Hello @ahmed007

How about check hardware connection?

Alice

Re: CANopen LPCXpresso55S16

ahmed007 — Wed, 12 Jul 2023 09:07:36 GMT

Hello @Alice_Yang ,

Thank you for your reply, Do you mean terminal resistors?

Best regards,

Ahmed Bouzid.

Re: CANopen LPCXpresso55S16

ahmed007 — Wed, 12 Jul 2023 09:16:32 GMT

Hello @Alice_Yang ,

Also, one thing to mention, the Raspberry Pi uses a 500000 CAN Bitrate and 2000000 CAN BRS_Bitrate while the LPCXpresso uses 500000 for both bitrates.

I tried to change the Raspberry PI CAN_BRS_Bitrate to 500000 but I lose communication with it that's why I kept them as they were defined.

best regards,

Ahmed.