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-rw-r--r--keyboards/preonic/rev3_drop/mcuconf.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/keyboards/preonic/rev3_drop/mcuconf.h b/keyboards/preonic/rev3_drop/mcuconf.h
index 31abf13b63..b51bf6708e 100644
--- a/keyboards/preonic/rev3_drop/mcuconf.h
+++ b/keyboards/preonic/rev3_drop/mcuconf.h
@@ -37,3 +37,7 @@
// TIM2 to TIM3.
#undef STM32_ST_USE_TIMER
#define STM32_ST_USE_TIMER 3
+
+// enable i2c
+#undef STM32_I2C_USE_I2C1
+#define STM32_I2C_USE_I2C1 TRUE \ No newline at end of file