topic Serial Transmission in MPC5xxx

Serial Transmission

andrerm — Sat, 20 May 2017 10:30:25 GMT

Hello

I have a problem with serial transmission

I have to send data from the ADC via serial port to my computer.

I'm not sure which module to use and I started working with the linflex in UART mode. It's correct?

I've read various examples (with and without DMA) but I still have a question about how to set data output to my PC

Can you help me?

PetrS — Mon, 22 May 2017 07:02:46 GMT

Hi Andrea,

Yes, the LINFlex (in UART mode) or eSCI modules can be used for that purpose. It depends which MCU do you have.

The MCU is connected to the PC via the USB or RS232 connector, thus appropriate UART transceiver has to be used.

It is always available on our EVBs.

BR, Petr

andrerm — Mon, 22 May 2017 14:28:57 GMT

Thank you for reply.

So i have to set the linflex in rx mode (to receive data from the mcu) and then to in tx mode (to send them to the pc)

it's correct?

PetrS — Tue, 23 May 2017 07:46:57 GMT

You will enable both the Transceiver and Receiver using respective bits in UARTCR register and then write/read data to/from Data register.

You can refer to this example https://community.nxp.com/docs/DOC-333894, which shows an ADC module usage.

It also displays converted result to the terminal window.

BR, Petr