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analog reading pfutzing for better battery stability?

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Jorj Bauer 2017-08-14 19:48:37 -04:00
parent 58c636b484
commit c46f81ca58
1 changed files with 5 additions and 5 deletions
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10
teensy/teensy.ino
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@ -75,7 +75,7 @@ void setup()
pinMode(RESETPIN, INPUT); pinMode(RESETPIN, INPUT);
digitalWrite(RESETPIN, HIGH); digitalWrite(RESETPIN, HIGH);
analogReference(EXTERNAL); // 3.3v external, or 1.2v internal. We need 1.2 internal for the battery level, which means we're gonna have to do something about the paddles :/ analogReference(EXTERNAL); // 3.3v external, or 1.7v internal. We need 1.7 internal for the battery level, which means we're gonna have to do something about the paddles :/
analogReadRes(8); // We only need 8 bits of resolution (0-255) for battery & paddles analogReadRes(8); // We only need 8 bits of resolution (0-255) for battery & paddles
analogReadAveraging(4); // ?? dunno if we need this or not. analogReadAveraging(4); // ?? dunno if we need this or not.
analogWriteResolution(12); analogWriteResolution(12);
@ -263,7 +263,7 @@ void loop()
// FIXME: what about rollover? // FIXME: what about rollover?
nextBattCheck = millis() + 3 * 1000; // check every 30 seconds nextBattCheck = millis() + 3 * 1000; // check every 30 seconds
// This is a bit disruptive - but the external 3.3v will drop along with the battery level, so we should use the more stable (I hope) internal 1.2v. // This is a bit disruptive - but the external 3.3v will drop along with the battery level, so we should use the more stable (I hope) internal 1.7v.
// The alternative is to build a more stable buck/boost regulator for reference... // The alternative is to build a more stable buck/boost regulator for reference...
analogReference(INTERNAL); analogReference(INTERNAL);
batteryLevel = analogRead(BATTERYPIN); batteryLevel = analogRead(BATTERYPIN);
@ -290,10 +290,10 @@ void loop()
if (batteryLevel < 146) if (batteryLevel < 146)
batteryLevel = 146; batteryLevel = 146;
if (batteryLevel > 172) if (batteryLevel > 168)
batteryLevel = 172; batteryLevel = 168;
batteryLevel = map(batteryLevel, 146, 172, 0, 100); batteryLevel = map(batteryLevel, 146, 168, 0, 100);
g_display->drawBatteryStatus(batteryLevel); g_display->drawBatteryStatus(batteryLevel);
} }
} }