GPIO_HANDLE_SET_LINE_VALUES_IOCTL¶
Warning
This ioctl is part of GPIO Character Device Userspace API (v1) and is obsoleted by GPIO_V2_LINE_SET_VALUES_IOCTL.
Name¶
GPIO_HANDLE_SET_LINE_VALUES_IOCTL - Set the values of all requested output lines.
Synopsis¶
-
GPIO_HANDLE_SET_LINE_VALUES_IOCTL¶
int ioctl(int handle_fd, GPIO_HANDLE_SET_LINE_VALUES_IOCTL, struct gpiohandle_data *values)
Arguments¶
handle_fdThe file descriptor of the GPIO character device, as returned in the
request.fdby GPIO_GET_LINEHANDLE_IOCTL.valuesThe
line_valuesto set.
Description¶
Set the values of all requested output lines.
Only the values of output lines may be set. Attempting to set the value of input lines is an error (EPERM).
Return Value¶
On success 0.
On error -1 and the errno variable is set appropriately.
Common error codes are described in GPIO Error Codes.