From 1cd615ca77c5ab46c7b140a46e45885ae70c06b6 Mon Sep 17 00:00:00 2001
From: EmaMaker <emamaker0@gmail.com>
Date: Mon, 14 Jun 2021 15:50:52 +0200
Subject: [PATCH] firmware-teensy: default to none of the outputs selected

---
 Firmware/Teensy/include/waves.h | 1 +
 Firmware/Teensy/src/waves.cpp   | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Firmware/Teensy/include/waves.h b/Firmware/Teensy/include/waves.h
index c605b91..e4e7fc8 100644
--- a/Firmware/Teensy/include/waves.h
+++ b/Firmware/Teensy/include/waves.h
@@ -38,6 +38,7 @@ void generateSine(float);
 void generateSquare(float, int);
 void generateWave(float, int*, int);
 
+void noSelect();
 void selectDAC0();
 void selectDAC1();
 
diff --git a/Firmware/Teensy/src/waves.cpp b/Firmware/Teensy/src/waves.cpp
index dfb7811..65db6c4 100644
--- a/Firmware/Teensy/src/waves.cpp
+++ b/Firmware/Teensy/src/waves.cpp
@@ -24,6 +24,8 @@ void setupWaves(){
 	SIM_SCGC2 |= SIM_SCGC2_DAC1;
   DAC1_C0 = DAC_C0_DACEN | DAC_C0_DACRFS;
 
+  noSelect();
+
   //This one can be calculated only once
   calculateSineLookup();
 }
@@ -73,6 +75,11 @@ void selectDAC1(){
   digitalWriteFast(DAC1_SEL, HIGH);  
 }
 
+void noSelect(){
+  digitalWriteFast(DAC0_SEL, LOW);
+  digitalWriteFast(DAC1_SEL, LOW);  
+}
+
 //Write the DAC with using some parts of framework's Arduino.h, for higher speeds
 // Use FASTRUN to run code in RAM
 typedef int16_t __attribute__((__may_alias__)) aliased_int16_t;
@@ -107,7 +114,7 @@ FASTRUN void generateSine(float frequency){
 }
 
 FASTRUN void generateSquare(float frequency, int duty){
-    startGenerating();
+    selectDAC1();
     calculateSquareLookup(duty);
     generateWave(frequency, SQUARE_LUT, 1);
 }
\ No newline at end of file