66 行
1.7 KiB
C
66 行
1.7 KiB
C
/*
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Copyright 2016 Kai Ryu <kai1103@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EXPANDER_H
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#define EXPANDER_H
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#include <stdint.h>
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#include "matrix.h"
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#define MCP23017
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#define MCP23017_A0 0
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#define MCP23017_A1 0
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#define MCP23017_A2 0
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#ifdef MCP23017
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#define EXPANDER_ADDR ((0x20|(MCP23017_A0<<0)|(MCP23017_A1<<1)|(MCP23017_A2<<2)) << 1)
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enum EXPANDER_REG_BANK0 {
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EXPANDER_REG_IODIRA = 0,
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EXPANDER_REG_IODIRB,
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EXPANDER_REG_IPOLA,
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EXPANDER_REG_IPOLB,
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EXPANDER_REG_GPINTENA,
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EXPANDER_REG_GPINTENB,
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EXPANDER_REG_DEFVALA,
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EXPANDER_REG_DEFVALB,
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EXPANDER_REG_INTCONA,
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EXPANDER_REG_INTCONB,
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EXPANDER_REG_IOCONA,
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EXPANDER_REG_IOCONB,
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EXPANDER_REG_GPPUA,
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EXPANDER_REG_GPPUB,
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EXPANDER_REG_INTFA,
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EXPANDER_REG_INTFB,
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EXPANDER_REG_INTCAPA,
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EXPANDER_REG_INTCAPB,
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EXPANDER_REG_GPIOA,
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EXPANDER_REG_GPIOB,
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EXPANDER_REG_OLATA,
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EXPANDER_REG_OLATB
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};
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#endif
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void expander_init(void);
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void expander_scan(void);
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void expander_read_cols(void);
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uint8_t expander_get_col(uint8_t col);
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matrix_row_t expander_read_row(void);
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void expander_unselect_rows(void);
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void expander_select_row(uint8_t row);
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#endif
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