IWR1843BOOST: IWR1843BOOST

Alan Milne

Part Number: IWR1843BOOST
Other Parts Discussed in Thread: IWR1843

UARTS:

I can see access set up and usage for UART_A both Tx & Rx - but only for UART_B_TX. Is it possible to access UARTB_RX?

I can see that UARTA goes to device pins N4 & N5 for RS232 interface, UARTB_TX to pin F14 which seems to be SPI_CLK_2 ... is there an RX function to go with this?

reason:

I want to access data inside the 1843 ... and this is usually done via UARTB, i.e. at the higher of the two comPort rates. I have had trouble doing this at the PC end, and so have split the comPprt handling into two separate PC programs. This would be much easier if I had both Tx & Rx for the fast comPort, so I can have separate interface controls & functionality for each, and so have complete control over the data interchange using just that comPort.

If this is not possible, I can do what I need, but it will have to pass (qiuite large) data sets via the slow comPort.

many thanks

Alan

over 2 years ago

0 Pedrhom Nafisi over 2 years ago

TI__Mastermind 22537 points

Hello,

As per 1843 data sheet these are the pins responsible for UARTA and UARTB

Best Regards,

Pedrhom Nafisi

0 Alan Milne over 2 years ago in reply to Pedrhom Nafisi

Intellectual 285 points

Hi Pedrhom,

thanks - that matches up with what's in the pinmuxXX.h file, so I think I understand it thus far.

That's the IWR1843 part of it - but there's also how its used on the BOOST. This is, I think, where there is a problem. N4 is allocated to UARTA_RX, and P4 just goes to the DCA1000 connector .... it would need to be connected to U6 TM4C1294, to get to the incoming signal from the USB, wouldn't it?

So, as far as I can see, UARTB_RX isn't accessible - unless there's another way, or something I haven't seen yet, hence the question.

many thanks

Alan

0 Pedrhom Nafisi over 2 years ago in reply to Alan Milne

TI__Mastermind 22537 points

Hey Alan,

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/992136/awr1843boost-tx-rx-data-through-2nd-uart-interface-on-awr1843boost-evm

Check this other thread discussing UARTB_RX and what needs to be done in order to get it working. The pin you are looking for is indeed P4, but you will need a 0ohm resistor as well as software changes, both listed in that thread.

Best Regards,

Pedrhom Nafisi

0 Alan Milne over 2 years ago in reply to Pedrhom Nafisi

Intellectual 285 points

Hi Pedrhom,

thanks for the link - that should answer the question.

many thanks

Alan

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IWR1843BOOST: IWR1843BOOST