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NXPTM M522XX, KINETIS and i.MX RT / USB-MSD with K20FX512
« on: January 04, 2016, 07:43:06 PM »
I’m trying to get the USB-MSD device serial loader working on a custom board with a MK20FX512VLQ12 processor with an 8 MHz external clock. I’m having a problem getting the serial loader to operate.
I read through the ?Tasker – Serial Loader User’s Guide and made the following changes.
In config.h:
Defined USB_INTERFACE and USB_MSD_DEVICE_LOADER
Added #define K20F120M to KINETIS_K20
In app_hw_kinetis.h added:
#define EXTERNAL_CLOCK 8000000
#define _EXTERNAL_CLOCK EXTERNAL_CLOCK
#define CLOCK_DIV 2
#define CLOCK_MUL 30
#define FLEX_CLOCK_DIVIDE 3
#define FLASH_CLOCK_DIVIDE 5
#define USB_CLOCK_SOURCE_MCGPLL0CLK
#define USB_CLOCK_GENERATED_INTERNALLY
and changed PIN_COUNT and PACKAGE_TYPE to match processor
After building and flashing the software on the processor, plugging the USB into a PC, no new mass storage device is displayed. I figure that I have missed something with the clock settings. Has anyone had any experience setting up the USB-MSD serial loader on an MK20FX512?
Thank you for your time.
I read through the ?Tasker – Serial Loader User’s Guide and made the following changes.
In config.h:
Defined USB_INTERFACE and USB_MSD_DEVICE_LOADER
Added #define K20F120M to KINETIS_K20
In app_hw_kinetis.h added:
#define EXTERNAL_CLOCK 8000000
#define _EXTERNAL_CLOCK EXTERNAL_CLOCK
#define CLOCK_DIV 2
#define CLOCK_MUL 30
#define FLEX_CLOCK_DIVIDE 3
#define FLASH_CLOCK_DIVIDE 5
#define USB_CLOCK_SOURCE_MCGPLL0CLK
#define USB_CLOCK_GENERATED_INTERNALLY
and changed PIN_COUNT and PACKAGE_TYPE to match processor
After building and flashing the software on the processor, plugging the USB into a PC, no new mass storage device is displayed. I figure that I have missed something with the clock settings. Has anyone had any experience setting up the USB-MSD serial loader on an MK20FX512?
Thank you for your time.