49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
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#ifndef _GPIO_H_
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#define _GPIO_H_
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/* GPIO event detect types */
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enum DETECT_TYPE {
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DETECT_NONE,
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DETECT_RISING,
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DETECT_FALLING,
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DETECT_HIGH,
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DETECT_LOW,
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DETECT_RISING_ASYNC,
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DETECT_FALLING_ASYNC
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};
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/* GPIO pull up or down states */
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enum PULL_STATE {
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PULL_DISABLE,
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PULL_UP,
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PULL_DOWN,
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PULL_RESERVED
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};
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/* Pin data direction */
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enum GPIO_DIR {
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GPIO_IN,
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GPIO_OUT
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};
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/* GPIO pin setup */
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void SetGpioFunction (unsigned int pinNum, unsigned int funcNum);
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/* A simple wrapper around SetGpioFunction */
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void SetGpioDirection (unsigned int pinNum, enum GPIO_DIR dir);
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/* Set GPIO output level */
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void SetGpio (unsigned int pinNum, unsigned int pinVal);
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/* Read GPIO pin level */
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int ReadGpio (unsigned int pinNum);
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/* GPIO pull up/down resistor control function (NOT YET IMPLEMENTED) */
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int PudGpio (unsigned int pinNum, enum PULL_STATE state);
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/* Interrupt related functions */
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void EnableGpioDetect (unsigned int pinNum, enum DETECT_TYPE type);
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void DisableGpioDetect (unsigned int pinNum, enum DETECT_TYPE type);
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void ClearGpioInterrupt (unsigned int pinNum);
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#endif
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