From 41538b1b600eef242d1ede9fe9039d1079f6891a Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Mon, 12 Oct 2020 16:40:41 -0700 Subject: [PATCH] altoslib: Add conversion for motor pressure sensor This assumes a standard 0.5-4.5 range 1600PSI sensor. Signed-off-by: Keith Packard --- altoslib/AltosConvert.java | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/altoslib/AltosConvert.java b/altoslib/AltosConvert.java index 83299632..e51e4f30 100644 --- a/altoslib/AltosConvert.java +++ b/altoslib/AltosConvert.java @@ -311,6 +311,25 @@ public class AltosConvert { return easy_mini_2_adc(sensor) * supply * 127/27; } + static double motor_pressure(double voltage) { + double base = 0.5; + double max = 4.5; + double full_scale_pressure = psi_to_pa(1600); + + if (voltage < base) + voltage = base; + if (voltage > max) + voltage = max; + return (voltage - base) / (max - base) * full_scale_pressure; + } + + static double easy_motor_2_motor_pressure(int sensor) { + double supply = 3.3; + double voltage = easy_mini_2_adc(sensor) * supply * 15.6 / 10.0; + + return motor_pressure(voltage); + } + public static double radio_to_frequency(int freq, int setting, int cal, int channel) { double f; -- 2.30.2