Kinetis MicrocontrollersのトピックRe: MK66 MCU flex bus

MK66 MCU flex bus

karthikas — Wed, 09 Nov 2016 14:24:55 GMT

I am using MK66FN2M0VLQ18 MCU in our customized board.

In SDK_2.0_MK66FN2M0xxx18 stack there is no example using flex bus operation. I found some flex bus driver in middle ware , but quite confusing how start with that, How can I use flex bus related API's available.

Can any one give some brief idea on this.

Thank you.,

Regards

Karthik

Re: MK66 MCU flex bus

cutworth — Thu, 10 Nov 2016 04:53:25 GMT

Hi Karthik,

There is Flexbus example in KSDK2.0 package. You can refer to boards\twrk65f180m\driver_examples\flexbus. But this will depend on which exact device you connect with Flexbus. Is it external SRAM, bus interfaced LCD or CPLD/FPGA?

Hao

Re: MK66 MCU flex bus

karthikas — Thu, 10 Nov 2016 07:08:33 GMT

Hai Cutworth Wang.,

I am not interfacing any memory device , I just need two 32 bit I/O lines that is why i am using flex bus . I want to read write two 32 bit lines .

Regards

Karthik

Re: MK66 MCU flex bus

xiangjun_rong — Fri, 11 Nov 2016 02:46:20 GMT

Hi, Karthik,

This is my opinion, as you know that the FlexBus is used to read/write memory or memory-mapped device, the FlexBus data pins logic can not keep forever, when the memory accessing is over, the data bus logic are unknown.

If you want to read/write IO, how about using GPIO pins, the K65 has a lot of GPIO pins, for example PortA, PortB, PortC, PortD...

Hope it can help you

Xiangjun Rong

Re: MK66 MCU flex bus

karthikas — Wed, 16 Nov 2016 04:45:51 GMT

Hai xiangjun.rong.,

Thank you so much for the reply.

Actually I forgot to mention Flex bus is interfaced with some temporary Buffer memory. I understand how to read/write through flex bus. I will clarify if any further issue arise.

Thank a lot for the help.

Regards

Karthik.,