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CC2640R2F: multi role connection Parameter update

Part Number: CC2640R2F
Other Parts Discussed in Thread: LAUNCHXL-CC2650, CC2650

dear all:

       I am using the multi role program as a base for my program, on LaunchXL-CC2650 units,  Protocol stack version:simplelink_cc2640r2_sdk_2_30_00_28.

       As a slave device, what functions can call to initiate a connection Parameter update to the master device?