[keyboard] Add SP-111 support (#10193)

* Initial sp111 support

* Align with template

1 files changed, 34 insertions, 0 deletions

diff --git a/keyboards/sp111/mcp23018.h b/keyboards/sp111/mcp23018.h
new file mode 100644
index 000000000..dc2251b72
--- /dev/null
+++ b/keyboards/sp111/mcp23018.h
@@ -0,0 +1,34 @@
+/* Copyright 2020 zvecr<git@zvecr.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define mcp23018_PORTA 0
+#define mcp23018_PORTB 1
+
+#define ALL_OUTPUT 0
+#define ALL_INPUT 0xFF
+#define ALL_LOW 0
+#define ALL_HIGH 0xFF
+
+void mcp23018_init(uint8_t addr);
+bool mcp23018_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf);
+bool mcp23018_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf);
+bool mcp23018_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB);
+bool mcp23018_readPins(uint8_t slave_addraddr, uint8_t port, uint8_t* ret);
+bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* ret);