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-rw-r--r--os/hal/boards/NRF51-DK/board.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/os/hal/boards/NRF51-DK/board.h b/os/hal/boards/NRF51-DK/board.h
index abd8f7a..04c8daf 100644
--- a/os/hal/boards/NRF51-DK/board.h
+++ b/os/hal/boards/NRF51-DK/board.h
@@ -23,6 +23,7 @@
/* Board oscillators-related settings. */
#define NRF51_XTAL_VALUE 16000000
+#define NRF51_LFCLK_SOURCE 1
/* GPIO pins. */
#define BTN1 17