topic LPC5536 set UART pin as High Impedance in LPC Microcontrollers

LPC5536 set UART pin as High Impedance

Prak — Mon, 28 Nov 2022 10:28:16 GMT

Hi,

Can I check how to set the UART TX pin for LPC5536 as High Impedance? Disabling the interrupt is not sufficient, may need to set as High impedance.

Do I need to set as Input and open drain with no pull resistor?
Is this setting correct?

GPIO_PinInit(GPIO, 0U, 30U, &led_config);

GPIO_PinWrite(GPIO, 0U, 30U, 0); //Tx pin is 30

Re: LPC5536 set UART pin as High Impedance

danielholala — Mon, 28 Nov 2022 14:16:45 GMT

Why not configure this pin using Config Tools (i.e., Pins Tool). The tool will generate matching source code which you can use directly or compare to the code you came up with.

Re: LPC5536 set UART pin as High Impedance

Prak — Wed, 30 Nov 2022 07:18:02 GMT

Hi,
I tried to set the settings from Config tools but still the pin is not set to High Impedance.(Tx pin as disabled).