Issue:
USB mass storage error on Integration of GUI and USB Mass storage host
Software Development environment
- SDK version SDK_2_13_0_MIMXRT1170-EVK
- IDE version MCUXpressoIDE_11.7.0_9198.exe
Hardware used
Display Panel-DEMO_PANEL_RK055AHD091
IMXRT1176 EVK- SCH-32171 REV C2
PENDANT 8GB iball USB mass storage
Ellisys USB explorer
Deployment Diagram
To analyze resource requirement of combining USB host and GUI on we have integrated 2 sample apps in NXP sdk 2.13
- evkmimxrt1170_host_msd_fatfs_freertos_cm7
- evkmimxrt1170_ew_gui_pulse_oximeter
Code in fastfs sample is integrated to pulse oximeter sample
Task priority assigned
- GUI priority 5
- USB host task priority 4
- USB MSD fatfs task 3
USB Interrupt priority 6
Test Program
On successful detection of USB mass storage device a USB fastfs test code executed which will create 512 bytes of file in loop
Expected result
GUI and USB mass storage action executed parallel without performance issues
Actual result
USB fatfs write will fail if GUI is actively running
USB FATS is success only when GUI is suspended [done using vTaskSuspend(pxUITask)] when USB mass storage attach detected
Support required
Information on resource requirement of memory and CPU utilization following components
- USB interrupt
- USB host task
- USB Mass storage application task
- GUI task
Attachments
- USB fail stack trace.png
- Ellisys USB Analayser Software Setup.zip
- USB error IMXRT1170 EVK.ufo
- Screen shot of analyser output USB error IMXRT1170 EVK.bmp
- Test code used evkmimxrt1170_ew_gui_pulse_oximeter.zip
