prevent pl from updating twice
prevent pl from updating twice

cathalmccabe/PYNQ,cathalmccabe/PYNQ,Xilinx/PYNQ,yunqu/PYNQ,yunqu/PYNQ,yunqu/PYNQ,Xilinx/PYNQ,schelleg/PYNQ,schelleg/PYNQ,cathalmccabe/PYNQ,Xilinx/PYNQ,schelleg/PYNQ,Xilinx/PYNQ,cathalmccabe/PYNQ,cathalmccabe/PYNQ,yunqu/PYNQ,schelleg/PYNQ,schelleg/PYNQ,Xilinx/PYNQ,cathalmccabe/PYNQ,yunqu/PYNQ