AN144

Rev. 2.0

11

5.1. CP210x_GetNumDevices

Description:

This function returns the number of CP210x devices connected to the host.

Supported Devices:

CP2101, CP2102, CP2103, CP2104, CP2105

Location:

CP210x Manufacturing DLL

Prototype:

CP210x_STATUS CP210x_GetNumDevices( LPDWORD NumDevices )

Parameters:

1. NumDevices—Address of a DWORD that will contain the number of devices.

Return Value: CP210x_STATUS = CP210x_SUCCESS,



CP210x_DEVICE_NOT_FOUND,



CP210x_INVALID_PARAMETER

5.2. CP210x_GetProductString

Description:

This function returns a NULL-terminated serial number (S/N) string, product description string, or

full path string for the device specified by an index passed in the DeviceNum parameter. The index

of the first device is 0, and the index of the last device is the value (NumDevices) returned by

CP210x_GetNumDevices() - 1.

Supported Devices:

CP2101, CP2102, CP2103, CP2104, CP2105

Location:

CP210x Manufacturing DLL

Prototype:

CP210x_STATUS CP210x_GetProductString( DWORD DeviceNum,



LPVOID DeviceString, DWORD Options )

Parameters:

1. DeviceNum—Index of the device for which the product description string, serial number, or full

path is desired.

2. DeviceString—Variable of type CP210x_DEVICE_STRING returning the NULL-terminated

serial number, device description or full path string.

3. Options—Flag that determines if DeviceString contains the product description, serial number,

or full-path string.

Return Value: CP210x_STATUS = CP210x_SUCCESS,



CP210x_DEVICE_NOT_FOUND,



CP210x_INVALID_PARAMETER