From 5944ab246a981d6ceca94b0972345277a746c2d3 Mon Sep 17 00:00:00 2001
From: Priyadi Iman Nurcahyo <priyadi@priyadi.net>
Date: Fri, 10 Feb 2017 21:28:46 +0700
Subject: Implement battery level indicator

---
 keyboards/handwired/promethium/promethium.c | 34 +++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

(limited to 'keyboards/handwired/promethium/promethium.c')

diff --git a/keyboards/handwired/promethium/promethium.c b/keyboards/handwired/promethium/promethium.c
index a0035cce1..7f876c756 100644
--- a/keyboards/handwired/promethium/promethium.c
+++ b/keyboards/handwired/promethium/promethium.c
@@ -1,6 +1,36 @@
 #include "promethium.h"
+#include "analog.h"
+#include "timer.h"
+#include "matrix.h"
 
-void matrix_init_kb(void) {
+float battery_percentage(void) {
+    float voltage = analogRead(BATTERY_PIN) * 2 * 3.3 / 1024;
+    float percentage = (voltage - 3.5) * 143;
+    if (percentage > 100) {
+        return 100;
+    } else if (percentage < 0) {
+        return 0;
+    } else {
+        return percentage;
+    }
+}
+
+__attribute__ ((weak))
+void battery_poll(float percentage) {
+}
 
+void matrix_init_kb(void) {
 	matrix_init_user();
-}
\ No newline at end of file
+}
+
+void matrix_scan_kb(void) {
+    static uint16_t counter = BATTERY_POLL;
+    counter++;
+
+    if (counter > BATTERY_POLL) {
+        counter = 0;
+        battery_poll(battery_percentage());
+    }
+}
+
+
-- 
cgit v1.2.3-24-g4f1b


From 909fd4ae64432206e80925f12268c17ea7f2f68f Mon Sep 17 00:00:00 2001
From: Priyadi Iman Nurcahyo <priyadi@priyadi.net>
Date: Sat, 11 Feb 2017 00:07:10 +0700
Subject: Generalize layer indicators

---
 keyboards/handwired/promethium/promethium.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'keyboards/handwired/promethium/promethium.c')

diff --git a/keyboards/handwired/promethium/promethium.c b/keyboards/handwired/promethium/promethium.c
index 7f876c756..adfc11e2a 100644
--- a/keyboards/handwired/promethium/promethium.c
+++ b/keyboards/handwired/promethium/promethium.c
@@ -31,6 +31,8 @@ void matrix_scan_kb(void) {
         counter = 0;
         battery_poll(battery_percentage());
     }
+
+    matrix_scan_user();
 }
 
 
-- 
cgit v1.2.3-24-g4f1b


From 9fc3afbef4b3ecc8568c37f247c3c7f1ec87a4c1 Mon Sep 17 00:00:00 2001
From: Priyadi Iman Nurcahyo <priyadi@priyadi.net>
Date: Sat, 11 Feb 2017 14:50:43 +0700
Subject: simplify battery calculation for now

---
 keyboards/handwired/promethium/promethium.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

(limited to 'keyboards/handwired/promethium/promethium.c')

diff --git a/keyboards/handwired/promethium/promethium.c b/keyboards/handwired/promethium/promethium.c
index adfc11e2a..3e369a624 100644
--- a/keyboards/handwired/promethium/promethium.c
+++ b/keyboards/handwired/promethium/promethium.c
@@ -3,20 +3,17 @@
 #include "timer.h"
 #include "matrix.h"
 
-float battery_percentage(void) {
+// cubic fit {3.3, 0}, {3.5, 2.9}, {3.6, 5}, {3.7, 8.6}, {3.8, 36},  {3.9, 62}, {4.0, 73}, {4.05, 83}, {4.1, 89}, {4.15, 94}, {4.2, 100}
+
+uint8_t battery_level(void) {
     float voltage = analogRead(BATTERY_PIN) * 2 * 3.3 / 1024;
-    float percentage = (voltage - 3.5) * 143;
-    if (percentage > 100) {
-        return 100;
-    } else if (percentage < 0) {
-        return 0;
-    } else {
-        return percentage;
-    }
+    if (voltage < MIN_VOLTAGE) return 0;
+    if (voltage > MAX_VOLTAGE) return 255;
+    return (voltage - MIN_VOLTAGE) / (MAX_VOLTAGE - MIN_VOLTAGE) * 255;
 }
 
 __attribute__ ((weak))
-void battery_poll(float percentage) {
+void battery_poll(uint8_t level) {
 }
 
 void matrix_init_kb(void) {
@@ -29,7 +26,7 @@ void matrix_scan_kb(void) {
 
     if (counter > BATTERY_POLL) {
         counter = 0;
-        battery_poll(battery_percentage());
+        battery_poll(battery_level());
     }
 
     matrix_scan_user();
-- 
cgit v1.2.3-24-g4f1b


From 79de0cd11964e9205654498aa0027510e3c3535e Mon Sep 17 00:00:00 2001
From: Priyadi Iman Nurcahyo <priyadi@priyadi.net>
Date: Sat, 11 Feb 2017 19:03:18 +0700
Subject: Implement Capslock LED

---
 keyboards/handwired/promethium/promethium.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'keyboards/handwired/promethium/promethium.c')

diff --git a/keyboards/handwired/promethium/promethium.c b/keyboards/handwired/promethium/promethium.c
index 3e369a624..62e2281fa 100644
--- a/keyboards/handwired/promethium/promethium.c
+++ b/keyboards/handwired/promethium/promethium.c
@@ -32,4 +32,7 @@ void matrix_scan_kb(void) {
     matrix_scan_user();
 }
 
+void led_set_kb(uint8_t usb_led) {
+    led_set_user(usb_led);
+}
 
-- 
cgit v1.2.3-24-g4f1b