DAC on MQX3.6

[Curro]

Hi to all,

I'm developing a new project and, at the moment, i'm working on twrk60n512 demo board using MQX 3.6 RTOS.

I'm trying to use DAC peripherals but I find many problems.

I started from C:\... ...\mqx\examples\dac\dac_demo.c.

MQXIOUG.pdf suggest to use custom API located in C:\... ...\mqx\source\io\dac but folder doesn't exist...

I found it in MQX 3.7 version and I tried to use drivers inside my project but I get many compiler errors.

I also tried to migrate with all my project to 3.7 but I find many other compiler errors. I think I have to spend many time to complete migration so at the moment I stopped this procedure because I'm not sure it 's the right way. 

Anyone can help me? Some ideas...?

Many thanks and best regards

[anthony_huereca]

The DAC driver in MQX isn't available for the Kinetis family. It only supports the MCF51MM family at this time.

However you can use Processor Expert to generate a DAC driver. The PE example project in MQX uses the DAC.
See the section on using PE with MQX in the document at

C:\Program Files\Freescale\Freescale MQX 3.7\doc\FSL_MQX_3_7_in_CW_10_1.pdf

You will need MQX 3.7 to use PE with MQX. Try looking at the MQX 3.6 -> MQX 3.7 porting guide to see what you need to change to get your 3.6 project to compile properly with 3.7:

C:\Program Files\Freescale\Freescale MQX 3.7\doc\FSL_MQX_3_7_Porting_Guide.pdf

That should get you on the right track!

[EduardB_]

Hi,

I have a custom board with the Kinetis K10N512 with a 4MHz oscillator on it. I was fighting a long time to port the bsp_twrk60n512_pe to K10 without any success - hundreds of errors etc. It looks like I'm not the only one:

https://community.freescale.com/thread/100698

But I was successful by porting the "non-PE" BSP - bsp_twrk60n512 to K10 (changing some macros regarding the oscillator frequency). Also the GPIO handling seems to work.

At the next step I tried to implement the DAC and realized that the IO-Drivers for the DAC are not available in the bsp_twrk60n512 - not in the MQX3.7 and also not in the MQX3.8.

Do you have any idea?

Thx

Eddie

[artur73]

I installed the latest MQX library available (4.0.0) and still no DAC support there for twrk60n512.

How can I proceed with development without drivers?

Does someone have ready solutions for DAC?

Thanks!

[LuisCasado]

Hello,

You can use LDD driver from Processor Expert, or just to access to registers within Task code, or write your own driver foloowing the Application note on web.

Best Regards,

[Curro]

Thanks a lot and best regards,

Corrado