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[/] [scarts/] [trunk/] [drivers/] [src/] [include/] [key_matrix.h] - Rev 3
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/** * \brief Driver for key matrix module. */ #ifndef __key_matrix_h__ #define __key_matrix_h__ #include "drivers.h" #define KEY_MATRIX_PRESSED_KEY 4 /** * \brief Initilizes a new handle for a memory mapped module. * \param h The handle which is initialized. * \param baseAddress The base addresse where the module is mapped. */ void key_matrix_initHandle(module_handle_t *h, scarts_addr_t baseAddress); /** * \brief Free dynamically allocated resources. * \param h Handle. */ void key_matrix_releaseHandle(module_handle_t *h); /** * \brief Query which button has been pressed last. * This is typically done in the interrupt service routine. * \param h Handle. */ uint8_t key_matrix_get_key(module_handle_t *h); /** * \brief Send acknowledgement to hardware module that interrupt * has been processed. This needs to be done at the end of the * interrupt service routine. * \param h Handle. */ void key_matrix_irq_ack(module_handle_t *h); #endif // __key_matrix_h__