diff options
Diffstat (limited to 'keyboards/ergodone/expander.h')
| -rw-r--r-- | keyboards/ergodone/expander.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/keyboards/ergodone/expander.h b/keyboards/ergodone/expander.h new file mode 100644 index 0000000000..8676fed693 --- /dev/null +++ b/keyboards/ergodone/expander.h @@ -0,0 +1,48 @@ +#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 |