
Change Si5351C CLK2 to 10MHz. Keep CLK3 at 20MHz, but not inverted. Source SGPIO8 from P1_12 instead of P9_6. (See "SGPIO Clock Routing") modification at https://github.com/mossmann/hackrf/wiki/Future-Hardware-Modifications ).
The firmware is set up for compilation with the GCC toolchain available here: https://code.launchpad.net/gcc-arm-embedded Required dependency: https://github.com/mossmann/libopencm3