LPC1112 Bootloader - shared serial port

Started by thiagorod, April 03, 2018, 12:29:28 PM

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thiagorod

Hello,

Is it still possible to program the LPC1112 via serial port (using the bootloader) even if the serial port is being used by a different IC (serial-USB converter for instance) ? Or is it necessary to add resistors to one of the branches ?

Regards,

Andy Ayre

UART/RS232 is point-to-point and isn't designed for multiple devices to be attached to it. Use jumpers or tri-state outputs instead.
Embedded Systems Academy, Inc.
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thiagorod

Thanks for you reply Andy.

I agree with that, I´ve seen some ideas to split the UART, using resistors, diodes, but this is really not recommended, right?

Regards,

Andy Ayre

Embedded Systems Academy, Inc.
support at esacademy dot com