Add support for the ErgoDone

1 files changed, 48 insertions, 0 deletions

diff --git a/keyboards/ergodox/ergodone/expander.h b/keyboards/ergodox/ergodone/expander.h
new file mode 100644
index 0000000000..8676fed693
--- /dev/null
+++ b/keyboards/ergodox/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