From 3ef38d91b0474ea0fa6e92b3e179911816277fc4 Mon Sep 17 00:00:00 2001
From: davidcliddell <david@liddell.com>
Date: Thu, 15 Apr 2021 11:01:48 +0100
Subject: added setSingleChannel

---
 src/ADS1115_WE.cpp | 8 +++++++-
 src/ADS1115_WE.h   | 5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/ADS1115_WE.cpp b/src/ADS1115_WE.cpp
index debe73a..01cb4fa 100644
--- a/src/ADS1115_WE.cpp
+++ b/src/ADS1115_WE.cpp
@@ -218,7 +218,13 @@ void ADS1115_WE::setCompareChannels(ADS1115_MUX mux){
         delayAccToRate(rate);               
     }       
 }
-    
+
+void ADS1115_WE::setSingleChannel(size_t channel) {
+    if (channel >=  4)
+        return;
+    setCompareChannels((ADS1115_MUX)(ADS1115_COMP_0_GND + ADS1115_COMP_INC*channel));
+}
+
 bool ADS1115_WE::isBusy(){
     uint16_t currentConfReg = readRegister(ADS1115_CONFIG_REG);
     return (!(currentConfReg>>15) & 1);
diff --git a/src/ADS1115_WE.h b/src/ADS1115_WE.h
index 6d68123..395d4d0 100644
--- a/src/ADS1115_WE.h
+++ b/src/ADS1115_WE.h
@@ -95,6 +95,7 @@ typedef enum ADS1115_MUX{
     ADS1115_COMP_2_GND = 0x6000,
     ADS1115_COMP_3_GND = 0x7000
 } mux;
+#define ADS1115_COMP_INC 0x1000     // increment to next channel
 
 typedef enum ADS1115_STATUS_OR_START{
     ADS1115_BUSY          = 0x0000,
@@ -213,6 +214,10 @@ public:
     */
     void setCompareChannels(ADS1115_MUX mux);
 
+    /* Set to channel (0-3) in single ended mode
+     */
+    void setSingleChannel(size_t channel);
+
     bool isBusy();
     void startSingleMeasurement();
     float getResult_V();
-- 
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