Embest SBC8600B, Быстрый старт

Страница: 100 / 126

Page | 93
DeviceIoControl (hFile, IOCTL_GPIO_SETBIT, &id, sizeof (DWORD), NULL, 0,
NULL, NULL);
Output low level:
DeviceIoControl (hFile, IOCTL_GPIO_CLRBIT, &id, sizeof (DWORD), NULL, 0,
NULL, NULL);
Read the pin state
DeviceIoControl (hFile, IOCTL_GPIO_GETBIT, &id, sizeof (DWORD), &pinState,
sizeof (DWORD), NULL, NULL);
"id" is the GPIO pin number, "pinSate" returns to pin state
Other optional operations
Read the corresponding IRQ number of a GPIO pin
DWORD id = 0, irq = 0;
DeviceIoControl (hFile, IOCTL_GPIO_GETIRQ, &id, sizeof (DWORD), &irq, sizeof
(DWORD), NULL, NULL);
"id" is the GPIO pin number; "irq" returns the IRQ number
Close the GPIO device
CloseHandle (hFile);
Note:

Definition of GPIO pin: 0~127 MPU Bank0~3 GPIO pin.

GPIO pin 0~127 has to be configured as a GPIO under
SBC8600/SRC/inc/bsp_padcfg.h when referred to as a GPIO pin.