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-rw-r--r--components/drivers/misc/rt_drv_pwm.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/drivers/misc/rt_drv_pwm.c b/components/drivers/misc/rt_drv_pwm.c
index 04895868e2..42325587ab 100644
--- a/components/drivers/misc/rt_drv_pwm.c
+++ b/components/drivers/misc/rt_drv_pwm.c
@@ -9,6 +9,7 @@
*/
#include <string.h>
+#include <stdlib.h>
#include <drivers/rt_drv_pwm.h>