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Hello everyone,
I have a following problem, I am trying to use my LPC4357 on MCB4300 as USB Host for CDC connection.
I have the simplest code
#include <stdio.h> #include "cmsis_os.h" #include "rl_usb.h" // Keil.MDK-Pro::USB:CORE #include "RTE_Components.h" // Component selection #include "EventRecorder.h" int main(){ usbStatus usb_status; // USB status uint16_t deviceVID; osKernelInitialize(); osKernelStart(); EventRecorderInitialize(EventRecordAll, 1); EventRecorderStart(); USBH_Initialize(0U); for(;;){ usb_status = USBH_CDC_ACM_GetDeviceStatus(0U); if(usb_status != usbDeviceError && usb_status != usbClassErrorCDC){ deviceVID = USBH_Device_GetVID(0); if (deviceVID != 0x00) { for (;;) {} } } } }
In this line usb_status = USBH_CDC_ACM_GetDeviceStatus(0U); I always get usbDeviceError, I have tried different devices and it doesn't work, when I use the same code but use device class "Mass storage"(USB stick) with USBH_MSC_GetDeviceStatus(0U) or "Human Interface device"(USB keyboard) with USBH_HID_GetDeviceStatus(0U) it works, what am I doint wrong. Thanks
What kind of CDC device are you connecting to Host?