root / proj / kbc.h @ 155
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/**
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* This file concerns everything related to the KBC (KeyBoard Controller, which
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* actually also manages the mouse)
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*/
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#ifndef KBC_H_INCLUDED
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#define KBC_H_INCLUDED
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/**
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* @brief High-level function that reads the command byte of the KBC
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* @param cmd Pointer to variable where command byte read from KBC will be stored
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_read_cmd)(uint8_t *cmd);
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/**
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* @brief High-level function that changes the command byte of the KBC
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* @param cmd New value for command byte of KBC
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_change_cmd)(uint8_t cmd);
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/**
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* @brief High-level function that restores KBC to normal state
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* High-level function that restores KBC to normal state, because lcf_start
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* changes the command byte of KBC. If this function is not used, there is a
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* chance that the keyboard and keyboard interrupts remain disabled.
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_restore_keyboard)();
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/**
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* @brief Low-level function to issue a command to keyboard
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* @param cmd command to be issued
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_issue_cmd)(uint8_t cmd);
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/**
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* @brief Low-level function to issue an argument of a command
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* @param cmd argument to be issued
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_issue_arg)(uint8_t arg);
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/**
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* @brief Low-level function for reading byte from keyboard
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* Low-level function for reading byte from keyboard. Waits until output buffer
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* is full
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* @param value Pointer to variable where byte read from keyboard will be stored
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* @return 0 if operation was successful, 1 otherwise
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*/
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int (kbc_read_byte)(uint8_t *byte);
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#endif //KBC_H_INCLUDED |