From fe054c3c4e8e9a62cbf83b791de0a31f163b268a Mon Sep 17 00:00:00 2001
From: Andrey <anklimov@gmail.com>
Date: Thu, 9 Nov 2023 09:48:51 +0300
Subject: [PATCH] i2c reset utility

---
 lighthub/modules/in_ccs811_hdc1080.cpp | 11 +++--------
 lighthub/owTerm.cpp                    |  4 ++++
 lighthub/utils.cpp                     | 27 ++++++++++++++++++++++++++
 lighthub/utils.h                       |  2 ++
 4 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/lighthub/modules/in_ccs811_hdc1080.cpp b/lighthub/modules/in_ccs811_hdc1080.cpp
index 0b1592a..6d7293b 100644
--- a/lighthub/modules/in_ccs811_hdc1080.cpp
+++ b/lighthub/modules/in_ccs811_hdc1080.cpp
@@ -4,6 +4,7 @@
 #include "Streaming.h"
 #include "item.h"
 #include "main.h"
+#include "Wire.h"
 
 #if defined(M5STACK)
 #include <M5Stack.h>
@@ -63,8 +64,10 @@ delay(2000); */
 return 1;
 }
 
+
 int in_hdc1080::Setup()
 {
+//i2cReset();  
 if (HDC1080ready)  {debugSerial<<F("hdc1080 is already initialized")<<endl; return 0;}
 debugSerial.println("HDC1080 Init ");
 Wire.begin(); //Inialize I2C Harware
@@ -81,15 +84,7 @@ HDC1080ready = true;
 return 1;
 }
 
-void i2cReset(){
 
-#if defined (SCL_RESET)
-Wire.endTransmission(true);
-SCL_LOW();
-delay(300);
-SCL_HIGH();
-#endif
-}
 
 int in_hdc1080::Poll(short cause)
 {
diff --git a/lighthub/owTerm.cpp b/lighthub/owTerm.cpp
index f38ee04..0a62ef6 100644
--- a/lighthub/owTerm.cpp
+++ b/lighthub/owTerm.cpp
@@ -26,6 +26,7 @@ e-mail    anklimov@gmail.com
 #include "options.h"
 #include "main.h"
 #include "aJSON.h"
+//#include "twi.h"
 
 extern aJsonObject *owArr;
 extern  uint32_t timerCtr;
@@ -125,6 +126,9 @@ int owSetup() {
     //// todo - move memory allocation to here
     if (oneWire) return true;    // Already initialized
 #ifdef DS2482_100_I2C_TO_1W_BRIDGE
+//twi_setTimeoutInMicros()
+i2cReset();
+
     debugSerial<<F("DS2482_100_I2C_TO_1W_BRIDGE init")<<endl;
     debugSerial<<F("Free:")<<freeRam()<<endl;
     oneWire = new OneWire;
diff --git a/lighthub/utils.cpp b/lighthub/utils.cpp
index 3dd0901..e4850a6 100644
--- a/lighthub/utils.cpp
+++ b/lighthub/utils.cpp
@@ -876,5 +876,32 @@ bool checkToken(char * token, char * data)
   return false;    
   }
 
+
+
+
+void i2cReset(){
+
+#if defined (SCL_RESET)
+Wire.endTransmission(true);
+SCL_LOW();
+delay(300);
+SCL_HIGH();
+#endif
+
+Wire.endTransmission(true);
+Wire.end();
+pinMode(SCL,OUTPUT);
+pinMode(SDA,INPUT);
+  //10 сигналов клок
+  bool pulse=false;
+  for (int i=0; i<20;i++) {
+    //i2c_scl_toggle(i2c);
+        digitalWrite(SCL,pulse?HIGH:LOW);
+        pulse=!pulse;
+        delay(10);//10us мкс
+  }
+Wire.begin();
+}
+
 #pragma message(VAR_NAME_VALUE(debugSerial))
 #pragma message(VAR_NAME_VALUE(SERIAL_BAUD))
diff --git a/lighthub/utils.h b/lighthub/utils.h
index ab0be5a..967390a 100644
--- a/lighthub/utils.h
+++ b/lighthub/utils.h
@@ -79,3 +79,5 @@ bool getPinVal(uint8_t pin);
 int  str2regSize(char * str);
 bool checkToken(char * token, char * data);
  bool isProtectedPin(short pin);
+ void i2cReset();
+