xtal_cal.c并不使用the SDK projects its included in the prod_test tool. The value DEFAULT_TRIM is a value that acts as a starting point in an algorithm for finding the optimal value for crystal trimming. The DEFAULT_XTAL16M_TRIM_VALUE is just an approximation of a value that you can use as a crystal trimming value.
Hi Ciano,
xtal_cal.c并不使用the SDK projects its included in the prod_test tool. The value DEFAULT_TRIM is a value that acts as a starting point in an algorithm for finding the optimal value for crystal trimming. The DEFAULT_XTAL16M_TRIM_VALUE is just an approximation of a value that you can use as a crystal trimming value.
Thanks MT_dialog