From 2b4d2f5bba73461c61b153be5a5be5453c7b2928 Mon Sep 17 00:00:00 2001
From: Alberto Lopez <Alberto2k7@gmail.com>
Date: Mon, 29 Jul 2019 12:44:49 -0300
Subject: [PATCH] Added configuration variables as #defines in my_user_config.h

Code in driver changed to se new config vars.
---
 sonoff/my_user_config.h     |  6 ++++++
 sonoff/xsns_47_max31865.ino | 18 ++++++++++--------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/sonoff/my_user_config.h b/sonoff/my_user_config.h
index ef7e9393a..0f6e07e5f 100644
--- a/sonoff/my_user_config.h
+++ b/sonoff/my_user_config.h
@@ -429,6 +429,12 @@
 
 #define USE_MAX31865                             // Add support for MAX31865 RTD sensors using softSPI
 
+#ifdef USE_MAX31865
+  #define MAX31865_PTD_WIRES  2                 // PTDs come in several flavors. Pick yours
+  #define MAX31865_PTD_RES    100               // Nominal PTD resistance at 0°C (100Ω for a PT100, 1000Ω for a PT1000, YMMV!)
+  #define MAX31865_REF_RES    430               // Reference resistor (Usually 430Ω for a PT100, 4300Ω for a PT1000)
+#endif
+
 // -- IR Remote features --------------------------
 #define USE_IR_REMOTE                            // Send IR remote commands using library IRremoteESP8266 and ArduinoJson (+4k3 code, 0k3 mem, 48 iram)
 //  #define USE_IR_SEND_AIWA                       // Support IRsend Aiwa protocol
diff --git a/sonoff/xsns_47_max31865.ino b/sonoff/xsns_47_max31865.ino
index 00e0d8dd8..e3574fe12 100644
--- a/sonoff/xsns_47_max31865.ino
+++ b/sonoff/xsns_47_max31865.ino
@@ -1,8 +1,7 @@
 /*
   xsns_39_MAX31865.ino - MAX31865 thermocouple sensor support for Sonoff-Tasmota
 
-  Copyright (C) 2019 Alberto Lopez
-  Based on original code for MAx31855 written by Markus Past
+  Copyright (C) 2019 Alberto Lopez Siemens
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -18,15 +17,18 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-//#if defined(USE_MAX31855) || defined(USE_MAX31865)
-
 #ifdef USE_MAX31865
 #include "Adafruit_MAX31865.h"
 
 #define XSNS_47              47
 
-#define RTD0                 104.0   // Temperature at 0 degrees Celcius
-#define RREF                 430.0
+#if MAX31865_PTD_WIRES == 4
+  #define PTD_WIRES MAX31865_4WIRE
+#elif MAX31865_PTD_WIRES == 3
+  #define PTD_WIRES MAX31865_3WIRE
+#else
+  #define PTD_WIRES MAX31865_2WIRE
+#endif
 
 int8_t init_status = 0;
 
@@ -49,7 +51,7 @@ void MAX31865_Init(void){
     pin[GPIO_SSPI_SCLK]
   );
 
-  if(max31865.begin(MAX31865_2WIRE))
+  if(max31865.begin(PTD_WIRES))
     init_status = 1;
   else
     init_status = -1;
@@ -61,7 +63,7 @@ void MAX31865_Init(void){
 */
 void MAX31865_GetResult(void){
     MAX31865_Result.PtdResistance = max31865.readRTD();
-    MAX31865_Result.PtdTemp = max31865.rtd_to_temperature(MAX31865_Result.PtdResistance, RTD0, RREF);
+    MAX31865_Result.PtdTemp = max31865.rtd_to_temperature(MAX31865_Result.PtdResistance, MAX31865_PTD_RES, MAX31865_REF_RES);
 }
 
 void MAX31865_Show(bool Json){