Added comments on example Factory Programming

gogi640 · gogi640 · commit d373c1c0bd5a · 2022-06-14T13:59:54.000+02:00
diff --git a/examples/Inkplate10/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino b/examples/Inkplate10/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino
@@ -445,7 +445,7 @@ void test()
         // alive.
         cnt++;
     }
-    if (WiFi.status() == WL_CONNECTED)
+    if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi
     {
         Serial.println("WiFi is working!");
     }
@@ -454,11 +454,11 @@ void test()
         Serial.println("Not connected to WiFi network!");
     }
 
-    Wire.beginTransmission(0x51);
+    Wire.beginTransmission(0x51); // Send address 0x51 on I2C
 
     time_t begined = 0;
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         begined = millis();
         display.rtcReset();
@@ -478,9 +478,9 @@ void test()
         Serial.println("SD card slot is not working");
     }
 
-    Wire.beginTransmission(0x20);
+    Wire.beginTransmission(0x20); // Send address 0x20 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /1 found");
     }
@@ -489,9 +489,9 @@ void test()
         Serial.println("MCP /1 not found");
     }
 
-    Wire.beginTransmission(0x22);
+    Wire.beginTransmission(0x22); // Send address 0x22 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /2 found");
     }
@@ -502,13 +502,13 @@ void test()
 
     display.einkOn();
 
+    Wire.beginTransmission(0x48); // Send address 0x48 on I2C
+
     delay(200);
-    
-    Wire.beginTransmission(0x48);
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
-        if (display.readPowerGood())
+        if (display.readPowerGood())  // Test if power supply for e-ink is OK
         {
             Serial.println("TPS working!");
         }
@@ -522,20 +522,18 @@ void test()
     {
         Serial.println("TPS not found!");
     }
-    display.digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, WAKEUP, LOW);
-    display.digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, PWRUP, LOW);
 
     delay(5000);
 
-    if (begined != 0)
+    if (begined != 0) // Check if RTC measures time correctly
     {
-        display.rtcGetRtcData();
+        display.rtcGetRtcData(); // Get data from RTC
 
-        begined = (millis() - begined) / 1000;
+        begined = (millis() - begined) / 1000; // Get time esp32 has measured
 
         time_t diff = display.rtcGetEpoch() - 1600000000ULL;
 
-        if ( abs(begined - diff) < 2)
+        if ( abs(begined - diff) < 2) // Compare times
         {
             Serial.println("RTC is working");
         }
diff --git a/examples/Inkplate5/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino b/examples/Inkplate5/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino
@@ -390,7 +390,7 @@ void test()
         // alive.
         cnt++;
     }
-    if (WiFi.status() == WL_CONNECTED)
+    if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi
     {
         Serial.println("WiFi is working!");
     }
@@ -399,11 +399,11 @@ void test()
         Serial.println("Not connected to WiFi network!");
     }
 
-    Wire.beginTransmission(0x51);
+    Wire.beginTransmission(0x51); // Send address 0x51 on I2C
 
     time_t begined = 0;
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         begined = millis();
         display.rtcReset();
@@ -423,9 +423,9 @@ void test()
         Serial.println("SD card slot is not working");
     }
 
-    Wire.beginTransmission(0x20);
+    Wire.beginTransmission(0x20); // Send address 0x20 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /1 found");
     }
@@ -434,9 +434,9 @@ void test()
         Serial.println("MCP /1 not found");
     }
 
-    Wire.beginTransmission(0x22);
+    Wire.beginTransmission(0x22); // Send address 0x22 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /2 found");
     }
@@ -447,13 +447,13 @@ void test()
 
     display.einkOn();
 
-    Wire.beginTransmission(0x48);
+    Wire.beginTransmission(0x48); // Send address 0x48 on I2C
 
     delay(200);
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
-        if (display.readPowerGood())
+        if (display.readPowerGood())  // Test if power supply for e-ink is OK
         {
             Serial.println("TPS working!");
         }
@@ -470,15 +470,15 @@ void test()
 
     delay(5000);
 
-    if (begined != 0)
+    if (begined != 0) // Check if RTC measures time correctly
     {
-        display.rtcGetRtcData();
+        display.rtcGetRtcData(); // Get data from RTC
 
-        begined = (millis() - begined) / 1000;
+        begined = (millis() - begined) / 1000; // Get time esp32 has measured
 
         time_t diff = display.rtcGetEpoch() - 1600000000ULL;
 
-        if ( abs(begined - diff) < 2)
+        if ( abs(begined - diff) < 2) // Compare times
         {
             Serial.println("RTC is working");
         }
diff --git a/examples/Inkplate6/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino b/examples/Inkplate6/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino
@@ -396,7 +396,7 @@ void test()
         // alive.
         cnt++;
     }
-    if (WiFi.status() == WL_CONNECTED)
+    if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi
     {
         Serial.println("WiFi is working!");
     }
@@ -405,11 +405,11 @@ void test()
         Serial.println("Not connected to WiFi network!");
     }
 
-    Wire.beginTransmission(0x51);
+    Wire.beginTransmission(0x51); // Send address 0x51 on I2C
 
     time_t begined = 0;
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         begined = millis();
         display.rtcReset();
@@ -429,9 +429,9 @@ void test()
         Serial.println("SD card slot is not working");
     }
 
-    Wire.beginTransmission(0x20);
+    Wire.beginTransmission(0x20); // Send address 0x20 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /1 found");
     }
@@ -440,9 +440,9 @@ void test()
         Serial.println("MCP /1 not found");
     }
 
-    Wire.beginTransmission(0x22);
+    Wire.beginTransmission(0x22); // Send address 0x22 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /2 found");
     }
@@ -453,13 +453,13 @@ void test()
 
     display.einkOn();
 
-    Wire.beginTransmission(0x48);
+    Wire.beginTransmission(0x48); // Send address 0x48 on I2C
 
     delay(200);
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
-        if (display.readPowerGood())
+        if (display.readPowerGood())  // Test if power supply for e-ink is OK
         {
             Serial.println("TPS working!");
         }
@@ -476,15 +476,15 @@ void test()
 
     delay(5000);
 
-    if (begined != 0)
+    if (begined != 0) // Check if RTC measures time correctly
     {
-        display.rtcGetRtcData();
+        display.rtcGetRtcData(); // Get data from RTC
 
-        begined = (millis() - begined) / 1000;
+        begined = (millis() - begined) / 1000; // Get time esp32 has measured
 
         time_t diff = display.rtcGetEpoch() - 1600000000ULL;
 
-        if ( abs(begined - diff) < 2)
+        if ( abs(begined - diff) < 2) // Compare times
         {
             Serial.println("RTC is working");
         }
diff --git a/examples/Inkplate6PLUS/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino b/examples/Inkplate6PLUS/Others/Inkplate_Factory_Programming_VCOM/Inkplate_Factory_Programming_VCOM.ino
@@ -403,7 +403,7 @@ void test()
         // alive.
         cnt++;
     }
-    if (WiFi.status() == WL_CONNECTED)
+    if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi
     {
         Serial.println("WiFi is working!");
     }
@@ -412,11 +412,11 @@ void test()
         Serial.println("Not connected to WiFi network!");
     }
 
-    Wire.beginTransmission(0x51);
+    Wire.beginTransmission(0x51); // Send address 0x51 on I2C
 
     time_t begined = 0;
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         begined = millis();
         display.rtcReset();
@@ -436,9 +436,9 @@ void test()
         Serial.println("SD card slot is not working");
     }
 
-    Wire.beginTransmission(0x20);
+    Wire.beginTransmission(0x20); // Send address 0x20 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /1 found");
     }
@@ -447,9 +447,9 @@ void test()
         Serial.println("MCP /1 not found");
     }
 
-    Wire.beginTransmission(0x22);
+    Wire.beginTransmission(0x22); // Send address 0x22 on I2C
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
         Serial.println("MCP /2 found");
     }
@@ -460,14 +460,13 @@ void test()
 
     display.einkOn();
 
-    Wire.beginTransmission(0x48);
+    Wire.beginTransmission(0x48); // Send address 0x48 on I2C
 
     delay(200);
 
-    if (Wire.endTransmission() == 0)
+    if (Wire.endTransmission() == 0) // Check if there was an error in communication
     {
-
-        if (display.readPowerGood())
+        if (display.readPowerGood())  // Test if power supply for e-ink is OK
         {
             Serial.println("TPS working!");
         }
@@ -484,15 +483,15 @@ void test()
 
     delay(5000);
 
-    if (begined != 0)
+    if (begined != 0) // Check if RTC measures time correctly
     {
-        display.rtcGetRtcData();
+        display.rtcGetRtcData(); // Get data from RTC
 
-        begined = (millis() - begined) / 1000;
+        begined = (millis() - begined) / 1000; // Get time esp32 has measured
 
         time_t diff = display.rtcGetEpoch() - 1600000000ULL;
 
-        if ( abs(begined - diff) < 2)
+        if ( abs(begined - diff) < 2) // Compare times
         {
             Serial.println("RTC is working");
         }

Original file line number	Diff line number	Diff line change
`@@ -445,7 +445,7 @@ void test()`
`445`	`445`	`// alive.`
`446`	`446`	`cnt++;`
`447`	`447`	`}`
`448`		`- if (WiFi.status() == WL_CONNECTED)`
	`448`	`+ if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi`
`449`	`449`	`{`
`450`	`450`	`Serial.println("WiFi is working!");`
`451`	`451`	`}`
`@@ -454,11 +454,11 @@ void test()`
`454`	`454`	`Serial.println("Not connected to WiFi network!");`
`455`	`455`	`}`
`456`	`456`
`457`		`- Wire.beginTransmission(0x51);`
	`457`	`+ Wire.beginTransmission(0x51); // Send address 0x51 on I2C`
`458`	`458`
`459`	`459`	`time_t begined = 0;`
`460`	`460`
`461`		`- if (Wire.endTransmission() == 0)`
	`461`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`462`	`462`	`{`
`463`	`463`	`begined = millis();`
`464`	`464`	`display.rtcReset();`
`@@ -478,9 +478,9 @@ void test()`
`478`	`478`	`Serial.println("SD card slot is not working");`
`479`	`479`	`}`
`480`	`480`
`481`		`- Wire.beginTransmission(0x20);`
	`481`	`+ Wire.beginTransmission(0x20); // Send address 0x20 on I2C`
`482`	`482`
`483`		`- if (Wire.endTransmission() == 0)`
	`483`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`484`	`484`	`{`
`485`	`485`	`Serial.println("MCP /1 found");`
`486`	`486`	`}`
`@@ -489,9 +489,9 @@ void test()`
`489`	`489`	`Serial.println("MCP /1 not found");`
`490`	`490`	`}`
`491`	`491`
`492`		`- Wire.beginTransmission(0x22);`
	`492`	`+ Wire.beginTransmission(0x22); // Send address 0x22 on I2C`
`493`	`493`
`494`		`- if (Wire.endTransmission() == 0)`
	`494`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`495`	`495`	`{`
`496`	`496`	`Serial.println("MCP /2 found");`
`497`	`497`	`}`
`@@ -502,13 +502,13 @@ void test()`
`502`	`502`
`503`	`503`	`display.einkOn();`
`504`	`504`
	`505`	`+ Wire.beginTransmission(0x48); // Send address 0x48 on I2C`
	`506`	`+`
`505`	`507`	`delay(200);`
`506`		`-`
`507`		`- Wire.beginTransmission(0x48);`
`508`	`508`
`509`		`- if (Wire.endTransmission() == 0)`
	`509`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`510`	`510`	`{`
`511`		`- if (display.readPowerGood())`
	`511`	`+ if (display.readPowerGood()) // Test if power supply for e-ink is OK`
`512`	`512`	`{`
`513`	`513`	`Serial.println("TPS working!");`
`514`	`514`	`}`
`@@ -522,20 +522,18 @@ void test()`
`522`	`522`	`{`
`523`	`523`	`Serial.println("TPS not found!");`
`524`	`524`	`}`
`525`		`- display.digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, WAKEUP, LOW);`
`526`		`- display.digitalWriteInternal(MCP23017_INT_ADDR, mcpRegsInt, PWRUP, LOW);`
`527`	`525`
`528`	`526`	`delay(5000);`
`529`	`527`
`530`		`- if (begined != 0)`
	`528`	`+ if (begined != 0) // Check if RTC measures time correctly`
`531`	`529`	`{`
`532`		`- display.rtcGetRtcData();`
	`530`	`+ display.rtcGetRtcData(); // Get data from RTC`
`533`	`531`
`534`		`- begined = (millis() - begined) / 1000;`
	`532`	`+ begined = (millis() - begined) / 1000; // Get time esp32 has measured`
`535`	`533`
`536`	`534`	`time_t diff = display.rtcGetEpoch() - 1600000000ULL;`
`537`	`535`
`538`		`- if ( abs(begined - diff) < 2)`
	`536`	`+ if ( abs(begined - diff) < 2) // Compare times`
`539`	`537`	`{`
`540`	`538`	`Serial.println("RTC is working");`
`541`	`539`	`}`
Original file line number	Diff line number	Diff line change
`@@ -390,7 +390,7 @@ void test()`
`390`	`390`	`// alive.`
`391`	`391`	`cnt++;`
`392`	`392`	`}`
`393`		`- if (WiFi.status() == WL_CONNECTED)`
	`393`	`+ if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi`
`394`	`394`	`{`
`395`	`395`	`Serial.println("WiFi is working!");`
`396`	`396`	`}`
`@@ -399,11 +399,11 @@ void test()`
`399`	`399`	`Serial.println("Not connected to WiFi network!");`
`400`	`400`	`}`
`401`	`401`
`402`		`- Wire.beginTransmission(0x51);`
	`402`	`+ Wire.beginTransmission(0x51); // Send address 0x51 on I2C`
`403`	`403`
`404`	`404`	`time_t begined = 0;`
`405`	`405`
`406`		`- if (Wire.endTransmission() == 0)`
	`406`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`407`	`407`	`{`
`408`	`408`	`begined = millis();`
`409`	`409`	`display.rtcReset();`
`@@ -423,9 +423,9 @@ void test()`
`423`	`423`	`Serial.println("SD card slot is not working");`
`424`	`424`	`}`
`425`	`425`
`426`		`- Wire.beginTransmission(0x20);`
	`426`	`+ Wire.beginTransmission(0x20); // Send address 0x20 on I2C`
`427`	`427`
`428`		`- if (Wire.endTransmission() == 0)`
	`428`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`429`	`429`	`{`
`430`	`430`	`Serial.println("MCP /1 found");`
`431`	`431`	`}`
`@@ -434,9 +434,9 @@ void test()`
`434`	`434`	`Serial.println("MCP /1 not found");`
`435`	`435`	`}`
`436`	`436`
`437`		`- Wire.beginTransmission(0x22);`
	`437`	`+ Wire.beginTransmission(0x22); // Send address 0x22 on I2C`
`438`	`438`
`439`		`- if (Wire.endTransmission() == 0)`
	`439`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`440`	`440`	`{`
`441`	`441`	`Serial.println("MCP /2 found");`
`442`	`442`	`}`
`@@ -447,13 +447,13 @@ void test()`
`447`	`447`
`448`	`448`	`display.einkOn();`
`449`	`449`
`450`		`- Wire.beginTransmission(0x48);`
	`450`	`+ Wire.beginTransmission(0x48); // Send address 0x48 on I2C`
`451`	`451`
`452`	`452`	`delay(200);`
`453`	`453`
`454`		`- if (Wire.endTransmission() == 0)`
	`454`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`455`	`455`	`{`
`456`		`- if (display.readPowerGood())`
	`456`	`+ if (display.readPowerGood()) // Test if power supply for e-ink is OK`
`457`	`457`	`{`
`458`	`458`	`Serial.println("TPS working!");`
`459`	`459`	`}`
`@@ -470,15 +470,15 @@ void test()`
`470`	`470`
`471`	`471`	`delay(5000);`
`472`	`472`
`473`		`- if (begined != 0)`
	`473`	`+ if (begined != 0) // Check if RTC measures time correctly`
`474`	`474`	`{`
`475`		`- display.rtcGetRtcData();`
	`475`	`+ display.rtcGetRtcData(); // Get data from RTC`
`476`	`476`
`477`		`- begined = (millis() - begined) / 1000;`
	`477`	`+ begined = (millis() - begined) / 1000; // Get time esp32 has measured`
`478`	`478`
`479`	`479`	`time_t diff = display.rtcGetEpoch() - 1600000000ULL;`
`480`	`480`
`481`		`- if ( abs(begined - diff) < 2)`
	`481`	`+ if ( abs(begined - diff) < 2) // Compare times`
`482`	`482`	`{`
`483`	`483`	`Serial.println("RTC is working");`
`484`	`484`	`}`
Original file line number	Diff line number	Diff line change
`@@ -396,7 +396,7 @@ void test()`
`396`	`396`	`// alive.`
`397`	`397`	`cnt++;`
`398`	`398`	`}`
`399`		`- if (WiFi.status() == WL_CONNECTED)`
	`399`	`+ if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi`
`400`	`400`	`{`
`401`	`401`	`Serial.println("WiFi is working!");`
`402`	`402`	`}`
`@@ -405,11 +405,11 @@ void test()`
`405`	`405`	`Serial.println("Not connected to WiFi network!");`
`406`	`406`	`}`
`407`	`407`
`408`		`- Wire.beginTransmission(0x51);`
	`408`	`+ Wire.beginTransmission(0x51); // Send address 0x51 on I2C`
`409`	`409`
`410`	`410`	`time_t begined = 0;`
`411`	`411`
`412`		`- if (Wire.endTransmission() == 0)`
	`412`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`413`	`413`	`{`
`414`	`414`	`begined = millis();`
`415`	`415`	`display.rtcReset();`
`@@ -429,9 +429,9 @@ void test()`
`429`	`429`	`Serial.println("SD card slot is not working");`
`430`	`430`	`}`
`431`	`431`
`432`		`- Wire.beginTransmission(0x20);`
	`432`	`+ Wire.beginTransmission(0x20); // Send address 0x20 on I2C`
`433`	`433`
`434`		`- if (Wire.endTransmission() == 0)`
	`434`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`435`	`435`	`{`
`436`	`436`	`Serial.println("MCP /1 found");`
`437`	`437`	`}`
`@@ -440,9 +440,9 @@ void test()`
`440`	`440`	`Serial.println("MCP /1 not found");`
`441`	`441`	`}`
`442`	`442`
`443`		`- Wire.beginTransmission(0x22);`
	`443`	`+ Wire.beginTransmission(0x22); // Send address 0x22 on I2C`
`444`	`444`
`445`		`- if (Wire.endTransmission() == 0)`
	`445`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`446`	`446`	`{`
`447`	`447`	`Serial.println("MCP /2 found");`
`448`	`448`	`}`
`@@ -453,13 +453,13 @@ void test()`
`453`	`453`
`454`	`454`	`display.einkOn();`
`455`	`455`
`456`		`- Wire.beginTransmission(0x48);`
	`456`	`+ Wire.beginTransmission(0x48); // Send address 0x48 on I2C`
`457`	`457`
`458`	`458`	`delay(200);`
`459`	`459`
`460`		`- if (Wire.endTransmission() == 0)`
	`460`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`461`	`461`	`{`
`462`		`- if (display.readPowerGood())`
	`462`	`+ if (display.readPowerGood()) // Test if power supply for e-ink is OK`
`463`	`463`	`{`
`464`	`464`	`Serial.println("TPS working!");`
`465`	`465`	`}`
`@@ -476,15 +476,15 @@ void test()`
`476`	`476`
`477`	`477`	`delay(5000);`
`478`	`478`
`479`		`- if (begined != 0)`
	`479`	`+ if (begined != 0) // Check if RTC measures time correctly`
`480`	`480`	`{`
`481`		`- display.rtcGetRtcData();`
	`481`	`+ display.rtcGetRtcData(); // Get data from RTC`
`482`	`482`
`483`		`- begined = (millis() - begined) / 1000;`
	`483`	`+ begined = (millis() - begined) / 1000; // Get time esp32 has measured`
`484`	`484`
`485`	`485`	`time_t diff = display.rtcGetEpoch() - 1600000000ULL;`
`486`	`486`
`487`		`- if ( abs(begined - diff) < 2)`
	`487`	`+ if ( abs(begined - diff) < 2) // Compare times`
`488`	`488`	`{`
`489`	`489`	`Serial.println("RTC is working");`
`490`	`490`	`}`
Original file line number	Diff line number	Diff line change
`@@ -403,7 +403,7 @@ void test()`
`403`	`403`	`// alive.`
`404`	`404`	`cnt++;`
`405`	`405`	`}`
`406`		`- if (WiFi.status() == WL_CONNECTED)`
	`406`	`+ if (WiFi.status() == WL_CONNECTED) // Check if board is connected to WiFi`
`407`	`407`	`{`
`408`	`408`	`Serial.println("WiFi is working!");`
`409`	`409`	`}`
`@@ -412,11 +412,11 @@ void test()`
`412`	`412`	`Serial.println("Not connected to WiFi network!");`
`413`	`413`	`}`
`414`	`414`
`415`		`- Wire.beginTransmission(0x51);`
	`415`	`+ Wire.beginTransmission(0x51); // Send address 0x51 on I2C`
`416`	`416`
`417`	`417`	`time_t begined = 0;`
`418`	`418`
`419`		`- if (Wire.endTransmission() == 0)`
	`419`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`420`	`420`	`{`
`421`	`421`	`begined = millis();`
`422`	`422`	`display.rtcReset();`
`@@ -436,9 +436,9 @@ void test()`
`436`	`436`	`Serial.println("SD card slot is not working");`
`437`	`437`	`}`
`438`	`438`
`439`		`- Wire.beginTransmission(0x20);`
	`439`	`+ Wire.beginTransmission(0x20); // Send address 0x20 on I2C`
`440`	`440`
`441`		`- if (Wire.endTransmission() == 0)`
	`441`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`442`	`442`	`{`
`443`	`443`	`Serial.println("MCP /1 found");`
`444`	`444`	`}`
`@@ -447,9 +447,9 @@ void test()`
`447`	`447`	`Serial.println("MCP /1 not found");`
`448`	`448`	`}`
`449`	`449`
`450`		`- Wire.beginTransmission(0x22);`
	`450`	`+ Wire.beginTransmission(0x22); // Send address 0x22 on I2C`
`451`	`451`
`452`		`- if (Wire.endTransmission() == 0)`
	`452`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`453`	`453`	`{`
`454`	`454`	`Serial.println("MCP /2 found");`
`455`	`455`	`}`
`@@ -460,14 +460,13 @@ void test()`
`460`	`460`
`461`	`461`	`display.einkOn();`
`462`	`462`
`463`		`- Wire.beginTransmission(0x48);`
	`463`	`+ Wire.beginTransmission(0x48); // Send address 0x48 on I2C`
`464`	`464`
`465`	`465`	`delay(200);`
`466`	`466`
`467`		`- if (Wire.endTransmission() == 0)`
	`467`	`+ if (Wire.endTransmission() == 0) // Check if there was an error in communication`
`468`	`468`	`{`
`469`		`-`
`470`		`- if (display.readPowerGood())`
	`469`	`+ if (display.readPowerGood()) // Test if power supply for e-ink is OK`
`471`	`470`	`{`
`472`	`471`	`Serial.println("TPS working!");`
`473`	`472`	`}`
`@@ -484,15 +483,15 @@ void test()`
`484`	`483`
`485`	`484`	`delay(5000);`
`486`	`485`
`487`		`- if (begined != 0)`
	`486`	`+ if (begined != 0) // Check if RTC measures time correctly`
`488`	`487`	`{`
`489`		`- display.rtcGetRtcData();`
	`488`	`+ display.rtcGetRtcData(); // Get data from RTC`
`490`	`489`
`491`		`- begined = (millis() - begined) / 1000;`
	`490`	`+ begined = (millis() - begined) / 1000; // Get time esp32 has measured`
`492`	`491`
`493`	`492`	`time_t diff = display.rtcGetEpoch() - 1600000000ULL;`
`494`	`493`
`495`		`- if ( abs(begined - diff) < 2)`
	`494`	`+ if ( abs(begined - diff) < 2) // Compare times`
`496`	`495`	`{`
`497`	`496`	`Serial.println("RTC is working");`
`498`	`497`	`}`