update after first test on HW

APSCT_CLK_I2C.py

@@ -108,7 +108,7 @@ def Read_byte_PLL(reg_address, nof_bytes=1, ADDRESS=0x20 ):
 
 def setup_pll(pll_frequency='200MHz') :
     # Check PLL is in lock
-    if pll_frequency = '160MHz':
+    if pll_frequency == '160MHz':
         pll_address = PLL_160M
     else:
         pll_address=PLL_200M