From cfff87b1e4b93fa39162c65be7a5da2cd30256a1 Mon Sep 17 00:00:00 2001
From: Anson Biggs <anson@ansonbiggs.com>
Date: Fri, 19 Nov 2021 16:16:04 -0700
Subject: [PATCH] working load cell readout

---
 src/main.cpp | 63 ++++++++++++++++------------------------------------
 1 file changed, 19 insertions(+), 44 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 19cc6f2..02dbc63 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,7 @@
-#include <Arduino.h>
 #include "HX711.h"
 #include "LoadCells.h"
 #include "SD.h"
+#include <Arduino.h>
 
 LoadCells State;
 
@@ -24,11 +24,6 @@ const int pin_lc1 = 15;
 const int pin_lc2 = 19;
 const int pin_lc3 = 20;
 
-double lc0Offset = 0.0;
-double lc1Offset = 0.0;
-double lc2Offset = 0.0;
-double lc3Offset = 0.0;
-
 const int chipSelect = BUILTIN_SDCARD;
 File dataFile;
 
@@ -52,9 +47,13 @@ void setup() {
   lc3.set_scale();
 
   lc0.tare(50);
+  Serial.println(".");
   lc1.tare(50);
+  Serial.println(".");
   lc2.tare(50);
+  Serial.println(".");
   lc3.tare(50);
+  Serial.println("Load Cells Tared");
 
   // Attach ISRs to load cell data pins to read data when available
   attachInterrupt(digitalPinToInterrupt(pin_lc0), read_lc0, LOW);
@@ -65,32 +64,6 @@ void setup() {
   Serial.println("Load Cells Initialized");
   Serial.println("Calibrating");
 
-  // Load Cell Tare
-  double lc0Tot = 0.0;
-  double lc1Tot = 0.0;
-  double lc2Tot = 0.0;
-  double lc3Tot = 0.0;
-
-  for (int i = 0; i < 50; i++) {
-    lc0Tot += State.lc0;
-    lc1Tot += State.lc1;
-    lc2Tot += State.lc2;
-    lc3Tot += State.lc3;
-    delay(50);
-  }
-
-  lc0Offset = lc0Tot / 50.0;
-  lc1Offset = lc1Tot / 50.0;
-  lc2Offset = lc2Tot / 50.0;
-  lc3Offset = lc3Tot / 50.0;
-
-  Serial.println(lc0Tot);
-  Serial.println(lc1Tot);
-  Serial.println(lc2Tot);
-  Serial.println(lc3Tot);
-
-  Serial.println("Load Cells Tared");
-
   // Initializes State variables
   State.lc0 = lc0.get_value();
   State.lc1 = lc1.get_value();
@@ -100,14 +73,18 @@ void setup() {
 
 void loop() {
   // put your main code here, to run repeatedly:
-  write2CSV(State);
-  delay(20);
+  // write2CSV(State);
+  // delay(20);
+  Serial.println(String(State.lc0) + ",\t" + String(State.lc1) + ",\t" +
+                 String(State.lc2) + ",\t" + String(State.lc3));
+  Serial.println("~+~+~+~+~+~+~+~+~+~+~+~");
+  // delay(1000);
 }
 
-void read_lc0() { State.lc0 = lc0.get_value() - lc0Offset; }
-void read_lc1() { State.lc1 = lc1.get_value() - lc1Offset; }
-void read_lc2() { State.lc2 = lc2.get_value() - lc2Offset; }
-void read_lc3() { State.lc3 = lc3.get_value() - lc3Offset; }
+void read_lc0() { State.lc0 = lc0.get_value(); }
+void read_lc1() { State.lc1 = lc1.get_value(); }
+void read_lc2() { State.lc2 = lc2.get_value(); }
+void read_lc3() { State.lc3 = lc3.get_value(); }
 
 void write2CSV(LoadCells &State) {
 
@@ -122,7 +99,7 @@ void write2CSV(LoadCells &State) {
   dataFile.close();
 }
 
-void initFile(){
+void initFile() {
   Serial.print("Initializing SD card...");
   // see if the card is present and can be initialized:
   if (!SD.begin(chipSelect)) {
@@ -133,9 +110,9 @@ void initFile(){
   int i = 1;
   const char *fileName;
 
-  if (SD.exists("simOut.csv")) {
+  if (SD.exists("loadCell.csv")) {
     while (i > 0.0) {
-      fileName = ("simOut_" + String(i) + ".csv").c_str();
+      fileName = ("loadCell_" + String(i) + ".csv").c_str();
 
       if (!SD.exists(fileName)) {
         // Open simOut_i.csv
@@ -165,7 +142,5 @@ void initFile(){
       Serial.println("Error opening output file. \n\nABORTING SIMULATION");
     }
   }
-  dataFile.println(
-      "lc0,lc1,lc2,lc3");
+  dataFile.println("lc0,lc1,lc2,lc3");
 }
-  
\ No newline at end of file