modify twi scl and sda for nrf51422 eval board
add gpiote for pca10001
fix up gpiote

this is for driving an pwm so it is not exactly what we need for an
example
gcc dfu test build
uart example testing
Makefiles for s310 ble & ant
attempt to create gcc compiled dfu
perm changes
ignore keil gui files
keil build for pca10001 eval board
ant_ble_hrm_s310
    twi with shorts

    Nordic has kept the old version PPI of twi_hw_master around to be
    compatible with old hardware.

    Problem is PPI version is not compatible with BLE.

    Don't use twi_hw_master if you have old hardware.

    If you have new hardware such as nrf51422 E00, you can use twi_hw_master
    but you must uses SHORTS.
TWI harware master

twi hardware master using ble compatable SHORTS
ble_ant_example
examples wirkign