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- /*
- Copyright 2016 Kai Ryu <[email protected]>
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef EXPANDER_H
- #define EXPANDER_H
-
- #include <stdint.h>
- #include "matrix.h"
-
- #define MCP23017
- #define MCP23017_A0 0
- #define MCP23017_A1 0
- #define MCP23017_A2 0
-
- #ifdef MCP23017
- #define EXPANDER_ADDR ((0x20|(MCP23017_A0<<0)|(MCP23017_A1<<1)|(MCP23017_A2<<2)) << 1)
- enum EXPANDER_REG_BANK0 {
- EXPANDER_REG_IODIRA = 0,
- EXPANDER_REG_IODIRB,
- EXPANDER_REG_IPOLA,
- EXPANDER_REG_IPOLB,
- EXPANDER_REG_GPINTENA,
- EXPANDER_REG_GPINTENB,
- EXPANDER_REG_DEFVALA,
- EXPANDER_REG_DEFVALB,
- EXPANDER_REG_INTCONA,
- EXPANDER_REG_INTCONB,
- EXPANDER_REG_IOCONA,
- EXPANDER_REG_IOCONB,
- EXPANDER_REG_GPPUA,
- EXPANDER_REG_GPPUB,
- EXPANDER_REG_INTFA,
- EXPANDER_REG_INTFB,
- EXPANDER_REG_INTCAPA,
- EXPANDER_REG_INTCAPB,
- EXPANDER_REG_GPIOA,
- EXPANDER_REG_GPIOB,
- EXPANDER_REG_OLATA,
- EXPANDER_REG_OLATB
- };
- #endif
-
- void expander_init(void);
- void expander_scan(void);
- void expander_read_cols(void);
- uint8_t expander_get_col(uint8_t col);
- matrix_row_t expander_read_row(void);
- void expander_unselect_rows(void);
- void expander_select_row(uint8_t row);
-
- #endif
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