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-rw-r--r--keyboards/handwired/promethium/promethium.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/keyboards/handwired/promethium/promethium.h b/keyboards/handwired/promethium/promethium.h
index 6d51f81ca6..da37e5c560 100644
--- a/keyboards/handwired/promethium/promethium.h
+++ b/keyboards/handwired/promethium/promethium.h
@@ -7,6 +7,8 @@
#define UNICODE_TYPE_DELAY 0
#define BATTERY_PIN 9
#define BATTERY_POLL 30000
+#define MAX_VOLTAGE 4.2
+#define MIN_VOLTAGE 3.2
#define KEYMAP( \
k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c, \
@@ -103,4 +105,4 @@ enum led_sequence {
#endif
-void battery_poll(float percentage); \ No newline at end of file
+void battery_poll(uint8_t level); \ No newline at end of file