LPC MicrocontrollersのトピックRe: LPC4370 timer reset by interrupt

LPC4370 timer reset by interrupt

vitaliylivnov — Tue, 21 Aug 2018 20:12:50 GMT

Our task is to port the modbus library for the LPC4370 controller using DMA. Tell me, please, how to make the timer, counting the timeout from the time of the last received byte on UART, be reset by the interrupt "Receive data ready"? The reset must be hardware, without the CPU usage. We suspect that we need to use the State Configurable Timer for these purposes, but we do not know how to use it

Re: LPC4370 timer reset by interrupt

jeremyzhou — Wed, 22 Aug 2018 02:14:47 GMT

Hi Vitaliy Livnov,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Actually, I'm very clear about your implementation.
So to provide the fastest possible support, I'd highly recommend you to refer to the application note (AN11538) which demonstrates a variety of SCTimer usage.
Have a great day,
TIC

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Re: LPC4370 timer reset by interrupt

vitaliylivnov — Wed, 22 Aug 2018 05:57:48 GMT

Hi, jeremyzhou. Thanks for your help. Perhaps you know the ready-made examples of modbus implementation for LPC43xx?

Re: LPC4370 timer reset by interrupt

jeremyzhou — Thu, 23 Aug 2018 01:55:26 GMT

Hi Vitaliy Livnov,
Unfortunately, there're no application notes about MODBUS protocol implementation for LPC43xx series.
I think you can contact NXP's partner: CASCADEMIC Solutions Pvt. Ltd to apply for this kind of solution.
There is a paper which introduces MODBUS Protocol Implementation for Microcontroller, you can refer to it for details.
http://academicscience.co.in/admin/resources/project/paper/f201708081502176908.pdf
Have a great day,
TIC

Re: LPC4370 timer reset by interrupt

vitaliylivnov — Thu, 23 Aug 2018 06:57:32 GMT

Ok, thank you.