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-rw-r--r--bsp/env/coreplexip-arty.h2
-rw-r--r--bsp/env/hifive1.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/bsp/env/coreplexip-arty.h b/bsp/env/coreplexip-arty.h
index 161da7c..eedcaa5 100644
--- a/bsp/env/coreplexip-arty.h
+++ b/bsp/env/coreplexip-arty.h
@@ -97,6 +97,6 @@
#define RTC_FREQ 32768
-void write_hex(int fd, long int hex);
+void write_hex(int fd, unsigned long int hex);
#endif /* _SIFIVE_COREPLEXIP_ARTY_H */
diff --git a/bsp/env/hifive1.h b/bsp/env/hifive1.h
index b987847..0db2f0f 100644
--- a/bsp/env/hifive1.h
+++ b/bsp/env/hifive1.h
@@ -76,6 +76,6 @@
#define RTC_FREQ 32768
-void write_hex(int fd, long int hex);
+void write_hex(int fd, unsigned long int hex);
#endif /* _SIFIVE_HIFIVE1_H */