Hi! I'm new here in this community and in the world of ARM processors...
I'm working with the KL27 microcontroller series and I had some problems to make USB CDC communications work.
I follow some articles on the internet, and I saw that some people had troubles with the Kinetis Software Devlopment Kit, and solve it in simple ways.
The main problem is that I'm using the KL27Z256 microcontroller in a project. I can't use de "virtual_com" example provided by KSDK, because it's dedicated to KL27Z64 or FRDM-KL27 and I'm not getting sucess changing just the series number of microntroller in the compiler configurations.
Well... I found another article on the web, in this forum I think, here is the link: USB Device CDC on KSDK PEx components and KDS 3.0 and KSDK 1.2.0 or KSDK 1.3.0 .
I used the component "fsl_usb_framework" provided by the Processor Expert Library, configured it, and included the libraries from the directory: C:\Freescale\KSDK_1.3.0\usb\usb_core\device\sources\classes.
I tried to use the "fsl_usb descriptors" to generate the "usb_descriptor.c/.h" archives and can't initializate the components. I think it's a bug from PEx!?
Finally, it doesn't work. My Windows show a message like: "unknown device" or "driver error". The image below shows it (sorry portuguese):
I updated the driver from the "virtual_com" example ".inf" for FRDM-KL27Z, and it doesn't work.
Somebody know how can I change the target processor of the "virtual_com" FRDM-KL27Z app example for the KL27Z256 processor?
If we could use the Processor Expert tools with the KSDK is the best way for me, because I need to use the SPI interfaces and LPUART, and it's the best way for me in this time.
Thank's!!! Sorry my English...