PSoC™ 5, 3 & 1 Forum Discussions

[shil_1288831]

Hi,

We are using the Cypress bootloader to program PSoC 5LP via
serial port.

This work properly.

In addition we have an ability to program the same image
(*.cyacd) via CAN bus.

The CAN bus option works only if the programmed image is the
same size as the previous one.

If the size is different we are failing in checksum
validity.

1. Can you help us to understand what is missing in the CAN bus
   programmer?
2. Can you send us any document that describe the scenario of the
   serial programming?

Thanks

Shmuel

[Vison_Zhang · Accepted solution]

The Bootloader Host and slave communication flow during bootloading as follow. More detailed info please refer https://www.cypress.com/documentation/application-notes/an68272-psoc-3-psoc-4-psoc-5lp-and-psoc-anal...

Recommended debug this kind of problem using  'logic analyzer + contrast test'.