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-rw-r--r--src/avr/gpio.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/avr/gpio.h b/src/avr/gpio.h
index 9d98ee70..9f28a30a 100644
--- a/src/avr/gpio.h
+++ b/src/avr/gpio.h
@@ -50,8 +50,8 @@ struct i2c_config {
};
struct i2c_config i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr);
-void i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write);
-void i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg
+int i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write);
+int i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg
, uint8_t read_len, uint8_t *read);
#endif // gpio.h