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authorJack Humbert2016-07-06 23:44:22 -0400
committerGitHub2016-07-06 23:44:22 -0400
commit21e443101f4873a813d33e50486d4e9591e89f4e (patch)
treed06043ac6fe7003ba2e9d7c3ea30378b6a51c3d5 /keyboards/lets_split/i2c.h
parent5baaf871bbdd6667625860b0daef7fe9a91e08db (diff)
parenta4bf46f9b1d0a0be0cecb2cd0f0d941aa7c71bd3 (diff)
Merge pull request #484 from jackhumbert/lets-split-support
Add Let's Split support
Diffstat (limited to 'keyboards/lets_split/i2c.h')
-rw-r--r--keyboards/lets_split/i2c.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/keyboards/lets_split/i2c.h b/keyboards/lets_split/i2c.h
new file mode 100644
index 000000000..08ce4b009
--- /dev/null
+++ b/keyboards/lets_split/i2c.h
@@ -0,0 +1,31 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#define I2C_ACK 1
+#define I2C_NACK 0
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency
+#define SCL_CLOCK 100000L
+
+extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+void i2c_master_init(void);
+uint8_t i2c_master_start(uint8_t address);
+void i2c_master_stop(void);
+uint8_t i2c_master_write(uint8_t data);
+uint8_t i2c_master_read(int);
+void i2c_reset_state(void);
+void i2c_slave_init(uint8_t address);
+
+#endif