DIO_MODE=NOSHAREPIN, DIO_OEN=SP_NOEN
io mode register
DIO_MODE | IO mode register, SPI share MISO/MOSI at MOSI, USART share TXD/RXD at RXD 0 (NOSHAREPIN): do not share pin 1 (SHAREPIN): share pin |
DIO_OEN | shared pin direction register 0 (SP_NOEN): shared pin do not output 1 (SP_OEN): shared pin output enable |