topic Use both GPIO and FGPIO in Kinetis Microcontrollers

Use both GPIO and FGPIO

jun1 — Thu, 27 Feb 2020 05:41:14 GMT

Hi.

I am always indebted.
If I want to use FGPIO in addition to GPIO, do I need to make initial settings such as the direction register of FGPIO if I make initial settings such as the direction register of GPIO?
Or do I need to configure both if I want to use both GPIOs?
It seems that only FGPIO should be used, but I also want to use BME, so BME is GPIO based, isn't it?

jun

Re: Use both GPIO and FGPIO

jingpan — Fri, 28 Feb 2020 04:18:08 GMT

Hi jun,

FGPIO space is alias to GPIO space. That is writing to FGPIO register also means writing to GPIO register. So, you needn't to write two times.

BME is GPIO based. The peripheral address space occupies a 516 KB region: 512 KB based at 0x4000_0000 plus a 4
KB space based at 0x400F_F000 for GPIO accesses.

Regards,

Jing

Re: Use both GPIO and FGPIO

jun1 — Fri, 28 Feb 2020 07:42:12 GMT

I understand.
I am always grateful for your help.

jun.