not a good result
a very long time ago, i used a transformer 6v ac winding, full diode bridge and a 6v dc capacitor for smoothing.
i also discovered i could navigate 3 floors of stairs to the water tap with my eyes shut.
then again i've never repeated it either.
when looking at the schematics, we need to work out how the designer sees the peripheral devices.
it maybe that they don't see them as straight out interfaces, but in order to get the required devices to meet their specifications they've used that ability to remap ( move ) them to different pins.
so we read the schematic and because of remapping means they've moved spi1 to the spi3 pins and i2c1, spi2, i2c2 ... ... etc as an example they might need both 3v3 & 5v tolerant spi interfaces, moving spi1 (portA 3.3v) to spi3 (portB 5v)
also they might as all the outside world (us) uses them rename(renumber) the interfaces spi1->sp3 spi2->spi1 etc
stephen
