FYI the pin labels are next to the wrong pins for J199 on the Quick Reference Card for the FRDM-K64F.
This is the red & white card that comes as part of the packaging for the Freedom board.
The J199 connector is shown in one image (Figure 1) with an arrow pointing to it from a label "Add-on BT Module JY-MCU BT Board V1.05"
The other image (Figure 2) shows labels for each pin (1-P3V3, 2-GND, 3-PTC14, 4-PTC15) but the label for pin 1 is next to pin 4 and vice-versa.
