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-rw-r--r--os/hal/include/adc.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/os/hal/include/adc.h b/os/hal/include/adc.h
index d7f918da3..7db0f7641 100644
--- a/os/hal/include/adc.h
+++ b/os/hal/include/adc.h
@@ -228,7 +228,7 @@ typedef enum {
/* Invokes the callback passing the 2nd half of the buffer.*/ \
size_t half = (adcp)->depth / 2; \
size_t half_index = half * (adcp)->grpp->num_channels; \
- (adcp)->grpp->end_cb(adcp, (adcp)->samples + half_index, (adcp)->depth - half); \
+ (adcp)->grpp->end_cb(adcp, (adcp)->samples + half_index, half); \
} \
else { \
/* Invokes the callback passing the whole buffer.*/ \