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authorPierre Constantineau2018-06-05 19:15:19 +0300
committerDrashna Jaelre2018-06-05 09:15:19 -0700
commitc5b9533312443b78b152385d267cb19a87189478 (patch)
tree94bc31d4589aff231fd26c67a57bff6d693e4cb2 /keyboards/ergotravel/i2c.h
parent6b1350d764a0caf16bcf9c175a5c7867d8cd4fcb (diff)
adding all ErgoTravel Files (#3129)
* adding all ErgoTravel Files * fixing KC_KEYMAP to LAYOUT_kc on Viet's keymap.c
Diffstat (limited to 'keyboards/ergotravel/i2c.h')
-rw-r--r--keyboards/ergotravel/i2c.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/keyboards/ergotravel/i2c.h b/keyboards/ergotravel/i2c.h
new file mode 100644
index 000000000..43e596988
--- /dev/null
+++ b/keyboards/ergotravel/i2c.h
@@ -0,0 +1,49 @@
+#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);
+
+
+static inline unsigned char i2c_start_read(unsigned char addr) {
+ return i2c_master_start((addr << 1) | I2C_READ);
+}
+
+static inline unsigned char i2c_start_write(unsigned char addr) {
+ return i2c_master_start((addr << 1) | I2C_WRITE);
+}
+
+// from SSD1306 scrips
+extern unsigned char i2c_rep_start(unsigned char addr);
+extern void i2c_start_wait(unsigned char addr);
+extern unsigned char i2c_readAck(void);
+extern unsigned char i2c_readNak(void);
+extern unsigned char i2c_read(unsigned char ack);
+
+#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
+
+#endif