Low-level API for interacting with the FPGA chip.
freq_mhz- Exported clock frequency in MHz. Valid values: 48MHz, 24MHz, 16MHz 12MHz, 8MHz, 6MHz, 4MHz, 3MHz, 2MHz, 1MHz.
Let the FPGA start and export a clock for it over
The RP2040 exports its own crystal-based clock to the iCE40, through the dedicated
CLOCK GPOUT0 feature.
Set the ICE_FPGA_CRESET_B_PIN to LOW which keeps the FPGA in reset mode.
trueon success and
falseif it timeouts.
Release the stop mode if it was present, and wait that the FPGA confirms its startup with