Solvline Eddy DKV2.1.0.3 - Manual (Page 98)

Chapter 6. Library
Introduction
98
GETGPIOPUL_LA
GETGPIOPUL_LB
GETGPIOPUL_LC
Function Reads Read/Write status value for one of Port A, B, C
Format void ioctl(int fd, GETGPIOVAL_L?, int *mode[3]);
Parameter fd Handle to GPIO device(‚/dev/eddy_gpio‛)
mode Pointer to the buffer that will store the ‚pullup‛
value.
Returns None
Notice
6.8 ADC Function
Eddy CPU provides 4 channels of ADC(Analog Digital Converter).
Eddy DK board has temperature and illumination sensor for testing and the status of the sensors can
be checked in real time with ADC.
Sample program ‚
Eddy_Apps/test_adc.c ‛ uses ADC interface so users can refer to this source for
developing programs.
ADCSETCHANNEL
Function Configures whether to use 4 channels of ADC device or not.
Format void ioctl(int fd, ADCSETCHANNEL, int *channel);
Parameter fd Handle to ADC device(‚/dev/adc‛)
mode Pointer to the buffer that stores channel configuration
Returns None
Notice X X X X X X X X (bits)
| | | |----- channel 1 (temperature sensor)
| | |--------- channel 2 (illumination sensor)
| |------------- channel 3 (future use)
|----------------- channel 4 (future use)
ADCGETVALUE
Function Reads operation status of 4channels of ADC device
Format void ioctl(int fd, ADCGETVALUE, struct adc_struct *channels);
Parameter fd Handle to ADC device(‚/dev/adc‛)
mode Pointer to the buffer that will store channel operation
status