M1x22_gpio_control – Maxim Integrated 73M1822/73M1922 Control Module User Manual
Page 53
Advertising
UG_1x22_053
73M1822/73M1922 Control Module User Guide
Rev. 1.0
53
6.7.2 M1X22_GPIO_CONTROL
Description
The ioctl is used to control the operation of the GPIO pin.
#define M1X22_GPIO_CONTROL _IOWR(0xA4, 0xC1, unsigned int)
Prototype
int ioctl (
int chan_fd,
int M1X22_GPIO_CONTROL,
unsigned long param );
Parameters
Data Type
Name
Description
int
chan_fd
Channel descriptor.
int
M1X22_GPIO_CONTROL I/O control identifier for this operation.
unsigned long
param
Pointer to M1X22_GPIO_CONTROL_t.
Return Values
Data Type
Description
unsigned int
0 – Successful.
-1 – Failed to control GPIO.
Advertising