MQX Software Solutions中的主题 Re: device driver problem

device driver problem

botaoyang — Tue, 16 Jun 2015 02:13:26 GMT

I want to init a device like sd card and MFS in init_task, and the device will be used in another task like new_task, as
I have tried, in the new_task I can use the sd card device.

so I want to know if this method is posible, if it is posible, how to Implement this.

Re: device driver problem

danielchen — Tue, 16 Jun 2015 06:55:13 GMT

Hi Botao

Here is a document about how to make a new MQX driver, Please check the following document for details.

How to Make a new MQX Driver

Have a nice day,
Daniel

Re: device driver problem

botaoyang — Wed, 17 Jun 2015 01:09:20 GMT

Sorry, this is my fault that I didn't make my problem clear. I think you didn't get the main point of my question, I know how to make MQX drivers.

My problem is that I want to init a device in init_task, but in the main_task I am not able to use the device. if I want to use this device in many different tasks, do I have to init the device in each task, or could I init the device in init_task and can be used in other task?

If the device could be init in init_task and be used in other task, how to emplmemt this function?

Re: device driver problem

soledad — Mon, 22 Jun 2015 23:36:09 GMT

Hello botao,

Please check the sdcard example located at the path: C:\Freescale\Freescale_MQX_4_2\mfs\examples\sdcard

I hope this helps,

Have a great day,
Sol

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