keyboards/ergodone/expander.h

   1 #ifndef EXPANDER_H
   2 #define EXPANDER_H
   3
   4 #include <stdint.h>
   5 #include "matrix.h"
   6
   7 #define MCP23017
   8 #define MCP23017_A0 0
   9 #define MCP23017_A1 0
  10 #define MCP23017_A2 0
  11
  12 #ifdef MCP23017
  13 #define EXPANDER_ADDR ((0x20|(MCP23017_A0<<0)|(MCP23017_A1<<1)|(MCP23017_A2<<2)) << 1)
  14 enum EXPANDER_REG_BANK0 {
  15   EXPANDER_REG_IODIRA = 0,
  16   EXPANDER_REG_IODIRB,
  17   EXPANDER_REG_IPOLA,
  18   EXPANDER_REG_IPOLB,
  19   EXPANDER_REG_GPINTENA,
  20   EXPANDER_REG_GPINTENB,
  21   EXPANDER_REG_DEFVALA,
  22   EXPANDER_REG_DEFVALB,
  23   EXPANDER_REG_INTCONA,
  24   EXPANDER_REG_INTCONB,
  25   EXPANDER_REG_IOCONA,
  26   EXPANDER_REG_IOCONB,
  27   EXPANDER_REG_GPPUA,
  28   EXPANDER_REG_GPPUB,
  29   EXPANDER_REG_INTFA,
  30   EXPANDER_REG_INTFB,
  31   EXPANDER_REG_INTCAPA,
  32   EXPANDER_REG_INTCAPB,
  33   EXPANDER_REG_GPIOA,
  34   EXPANDER_REG_GPIOB,
  35   EXPANDER_REG_OLATA,
  36   EXPANDER_REG_OLATB
  37 };
  38 #endif
  39
  40 void expander_init(void);
  41 void expander_scan(void);
  42 void expander_read_cols(void);
  43 uint8_t expander_get_col(uint8_t col);
  44 matrix_row_t expander_read_row(void);
  45 void expander_unselect_rows(void);
  46 void expander_select_row(uint8_t row);
  47
  48 #endif