SystemBase Eddy DK, Руководство программиста

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Eddy DK Programmer Guide
114
GETGPIOMOD_LM
Function Reads Read/Write direction for all Port A, B, C
Format void ioctl(int fd, GETGPIOMOD_LM, int *mode[3]);
Parameter fd Handle to GPIO device(“/dev/eddy_gpio”)
mode Pointer to the buffer that will store the “mode”
value of Port A, B, C
Returns None
Notice
SETGPIOVAL_LM
Function Sets output value when Port A, B, C are all in output mode.
Format void ioctl(int fd, SETGPIOVAL_LM, int *value[3]);
Parameter fd Handle to GPIO device(“/dev/eddy_gpio”)
mode Pointer to the buffer that stores the “value” value
of Port A, B, C.
Bit value 0 means Low, 1 means High.
Returns None
Notice Any value is ok for bits that are not set to be used GPIO