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-rw-r--r--libmaple/include/libmaple/i2c.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libmaple/include/libmaple/i2c.h b/libmaple/include/libmaple/i2c.h
index c66ebcb..f7821af 100644
--- a/libmaple/include/libmaple/i2c.h
+++ b/libmaple/include/libmaple/i2c.h
@@ -193,7 +193,7 @@ typedef struct i2c_msg {
/* I2C enable options */
#define I2C_FAST_MODE 0x1 // 400 khz
#define I2C_DUTY_16_9 0x2 // 16/9 duty ratio
-#define I2C_REMAP 0x4 // Use alternate pin mapping
+/* Flag 0x4 is reserved; DO NOT USE. */
#define I2C_BUS_RESET 0x8 // Perform a bus reset
void i2c_master_enable(i2c_dev *dev, uint32 flags);