4 Replies Latest reply on Feb 1, 2018 3:52 AM by pawank_66

PSoC5LP: How to achieve flexible data rate in CAN module

abnac_2802246 Nov 5, 2017 11:31 PM

Hello Team,

For one of our project, we are using Cy8ckit-001 EVK Board and CY8C5868-LP035 module. We are using PSoC creator for generating API and developing firmware. Does CY8C5868-LP035 support flexible baud rate?

We want to transfer large data from PSoC to another CAN device. While transferring large data we'll set baud rate as 1Mbps and while normal communication we want to set baud rate as 250kbps. Now, How can I change baud rate while PSoC is operating? I don't find any API for doing that.

Thanks and Regards,

Abhishek Naik.

1. Re: PSoC5LP: How to achieve flexible data rate in CAN module

abnac_2802246 Nov 7, 2017 9:59 PM (in response to abnac_2802246)

Hello Team,
I am waiting for your response. Please help me out with my query.

Thanks and Regards,
Abhishek Naik.
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2. Re: PSoC5LP: How to achieve flexible data rate in CAN module

abnac_2802246 Nov 9, 2017 10:13 PM (in response to abnac_2802246)

Hello Team,
I am waiting for your response. Please help me out with my query. We have to decide whether to go with MCU or no.

Thanks and Regards,
Abhishek Naik.
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3. Re: PSoC5LP: How to achieve flexible data rate in CAN module

abnac_2802246 Nov 15, 2017 3:27 AM (in response to abnac_2802246)

Hello Team,
I am waiting for your response. Please help me out with my query. We have to decide whether to go with MCU or no.

Thanks and Regards,
Abhishek Naik.
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4. Re: PSoC5LP: How to achieve flexible data rate in CAN module

pawank_66 Feb 1, 2018 3:52 AM (in response to abnac_2802246)

Hi,
For a 24MHz bus speed,
1-M baud rate could be achieved with
BRP-1, TQ-12, TSEG1-7, TSEG2-4, SJW-4.
250Kbps could be achieved with
BRP-7, TQ-12, TSEG1-7, TSEG2-4, SJW-4.

Further to our rescue there is API:
CAN_SetPreScaler()
Which could be used to change BRP from 1 to 7 or vice-versa.
Let me know if this is usefull.

Thanks.
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