Guide: GPIO and COM port on i5-8250 industrial pc
2020-09-23

4 channel output GPIO0~GPIO3, operation I/O interface oxA06, each bit correspondence as follows:

GPIO0
GPIO1
GPIO2
GPIO3
0xA06.bit0
0xA06.bit1
0xA06.bit2
0xA06.bit3
 

4 channel output GPIO4~GPIO7, operation I/O interface oxA06, each bit correspondence as follows:


GPIO4
GPIO5
GPIO6
GPIO7
0xA06.bit4 
0xA06.bit5
0xA06.bit6

0xA06.bit7

Hardware definition:


GPIO on VENOEN mini pc P12-i5-8250U:


On P12-i5-8250U, COM1 and COM2 can be changed to RS232, RS422 and RS485 from Bios, guide pls click here, other 4 COM port definition below:

TXD3+RXD3+GND = COM3 (RS232)

TXD4+RXD4+GND = COM4 (RS232)

TXD5+RXD5+GND = COM5 (RS232)

TXD6+RXD6+GND = COM6 (RS232)

Totally it is 6 COM port onboard of P12-i5-8250 mini pc.

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