mh
/
qmk_firmware
mirror of https://github.com/qmk/qmk_firmware/

#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