summaryrefslogtreecommitdiff
path: root/keyboards/sx60/sx60.c
diff options
context:
space:
mode:
Diffstat (limited to 'keyboards/sx60/sx60.c')
-rwxr-xr-xkeyboards/sx60/sx60.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/keyboards/sx60/sx60.c b/keyboards/sx60/sx60.c
new file mode 100755
index 0000000000..ede8c07e97
--- /dev/null
+++ b/keyboards/sx60/sx60.c
@@ -0,0 +1,38 @@
+#include "sx60.h"
+#include "i2cmaster.h"
+
+
+bool i2c_initialized = 0;
+uint8_t mcp23018_status = 0x20;
+
+uint8_t init_mcp23018(void) {
+ mcp23018_status = 0x20;
+
+ /* I2C subsystem */
+
+ if (i2c_initialized == 0) {
+ i2c_init(); // on pins D(1,0)
+ i2c_initialized = true;
+ _delay_ms(1000);
+ }
+
+ /* B Pins are Row, A pins are Columns
+ Set them to output */
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(IODIRA); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b11111111); if (mcp23018_status) goto out;
+ /* Now write to IODIRB */
+ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
+ i2c_stop();
+
+ mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(GPPUA); if (mcp23018_status) goto out;
+ mcp23018_status = i2c_write(0b11111111); if (mcp23018_status) goto out;
+ /* Now write to GPPUB */
+ mcp23018_status = i2c_write(0b00000000); if (mcp23018_status) goto out;
+
+out:
+ i2c_stop();
+
+ return mcp23018_status;
+}