Page Comparison

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usbd_phdc.h / usbd_phdc.c

Prototype

CPU_BOOLEAN  USBD_PHDC_IsConn (CPU_INT08U  class_nbr);

Arguments

class_nbr

PHDC instance number.

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USBD_PHDC_IsConn() is typically used to verify that the device is in ‘configured’ state and that the PHDC instance is ready for communication. The following code illustrates a typical example:

CPU_BOOLEAN  conn;
 
conn = USBD_PHDC_IsConn(class_nbr);
while (conn != DEF_YES) {
    OSTimeDlyHMSM(0, 0, 0, 250);
 
    conn = USBD_PHDC_IsConn(class_nbr);
}

Once the connected status is DEF_YES, the communication can start.