JHCTech KMDA-3921 User Manual page 70

/*==========================================================================
1 * int smbus_16pin_gpio_input (int port);
2 * function description：read the motherboard GPIO input level
3 * parameter description：
Return value：return a byte (8 bit), each bit of the 8-bit corresponding to the level state of a GPIO
pin
Return value
GPIO pin
parameter：port fill in sub-card GPIO number, 1 or 2
Note: The read value is valid only when the pin is in input mode
4 * creation date：
5*========================================================================*/
Note: If you want more programs of the motherboard's watchdog and subcard's GPIO, please call +86-
0755-86021176-(8021)/+86-0755-86021176-(8023) for more information.
Bit7 Bit6 Bit5
PIN8 PIN7 PIN6
Bit4 Bit3 Bit2
PIN5 PIN4 PIN3
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User's Manual
Bit1 Bit0
PIN2 PIN1