// void end();
// private const int SPI_END = 1201;
public void end()
{
esp32If.GpioCommand(SPI_END, (int)spiBus, 0);
}
// void setClock(uint32_t frequency); // change bus clock without initing hardware
// private const int I2C_SET_CLOCK = 601;
public void setClock(uint frequency)
{
esp32If.GpioCommand(I2C_SET_CLOCK, busNum, (int)frequency);
}