Hi,
Are you using KSDK?
MQX In KSDK is MQX-Lite, which mainly responsible for task, semaphore, event, message queue, etc. No MQX IO driver is added.
So MQX applications in KSDK need to use OSA functions of MQX-Lite and KSDK drivers.
There're two examples under demo directory. One is sdhc_sdcard, which will demostrate usage of sdhc APIs, another is i2c_rtos, which will demostrate usage of MQX OSA functions.
Thanks!
Best regards
Terry