topic Re: gpio functioning in LPC Microcontrollers

gpio functioning

nelvijohn — Fri, 03 Mar 2017 17:04:10 GMT

let me know about how to make a gpio to read its pin status for lpc1857

Re: gpio functioning

soledad — Thu, 09 Mar 2017 17:34:26 GMT

Hi,

Which IDE are you using?

Are you using LPCOpen?

According with the reference manual:

Please check the following thread an let me know if this helps.

Simple Port / Register reading and writing. | www.LPCware.com

Have a great day,

Sol

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Re: gpio functioning

nelvijohn — Fri, 10 Mar 2017 07:02:05 GMT

Hi Soledad,

I have seen this user manual. I am using MDK5. Initially, the pin is configured as gpio input.

GPIO_SetDir(4,11,GPIO_DIR_INPUT); // GPIO direction

SCU_PinConfigure(4,11, SCU_PIN_CFG_INPUT_BUFFER_EN ); //Input buffer enable

if(!(GPIO_PinRead(4,11)))

{

// do neccessary

}

but it is always reading the status as 0 even the corresponding pin is in high state.