diff --git a/cores/arduino/mik32/shared/ldscripts/spifi_cpp.ld b/cores/arduino/mik32/shared/ldscripts/spifi_cpp.ld
index a018295..8a15697 100644
--- a/cores/arduino/mik32/shared/ldscripts/spifi_cpp.ld
+++ b/cores/arduino/mik32/shared/ldscripts/spifi_cpp.ld
@@ -31,7 +31,7 @@ SECTIONS {
         . = ALIGN(CL_SIZE);
     } >rom 
 
-	.init_array :
+	.init_array (READONLY) :
 	{
 	  PROVIDE_HIDDEN (__init_array_start = .);
 	  KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
diff --git a/libraries/SPI/examples/SDcard_readInfo/SDcard_readInfo.ino b/libraries/SPI/examples/SDcard_readInfo/SDcard_readInfo.ino
new file mode 100644
index 0000000..67582f5
--- /dev/null
+++ b/libraries/SPI/examples/SDcard_readInfo/SDcard_readInfo.ino
@@ -0,0 +1,96 @@
+
+/*
+  An SD card connected via SPI is used for this test. 
+  The example is taken from the arduino SD library.
+
+  https://github.com/arduino-libraries/SD
+*/
+
+#include <SPI.h>
+#include <SD.h>
+
+// set up variables using the SD utility library functions:
+Sd2Card card;
+SdVolume volume;
+SdFile root;
+
+const int chipSelect = 9;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+  Serial.print("\nInitializing SD card...");
+
+  // we'll use the initialization code from the utility libraries
+  // since we're just testing if the card is working!
+  if (!card.init(SPI_QUARTER_SPEED, chipSelect)) {
+    Serial.println("initialization failed. Things to check:");
+    Serial.println("* is a card inserted?");
+    Serial.println("* is your wiring correct?");
+    Serial.println("* did you change the chipSelect pin to match your shield or module?");
+    while (1);
+  } else {
+    Serial.println("Wiring is correct and a card is present.");
+  }
+
+  // print the type of card
+  Serial.println();
+  Serial.print("Card type:         ");
+  switch (card.type()) {
+    case SD_CARD_TYPE_SD1:
+      Serial.println("SD1");
+      break;
+    case SD_CARD_TYPE_SD2:
+      Serial.println("SD2");
+      break;
+    case SD_CARD_TYPE_SDHC:
+      Serial.println("SDHC");
+      break;
+    default:
+      Serial.println("Unknown");
+  }
+
+  // Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
+  if (!volume.init(card)) {
+    Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
+    while (1);
+  }
+
+  Serial.print("Clusters:          ");
+  Serial.println(volume.clusterCount());
+  Serial.print("Blocks x Cluster:  ");
+  Serial.println(volume.blocksPerCluster());
+
+  Serial.print("Total Blocks:      ");
+  Serial.println(volume.blocksPerCluster() * volume.clusterCount());
+  Serial.println();
+
+  // print the type and size of the first FAT-type volume
+  uint32_t volumesize;
+  Serial.print("Volume type is:    FAT");
+  Serial.println(volume.fatType(), DEC);
+
+  volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
+  volumesize *= volume.clusterCount();       // we'll have a lot of clusters
+  volumesize /= 2;                           // SD card blocks are always 512 bytes (2 blocks are 1KB)
+  Serial.print("Volume size (Kb):  ");
+  Serial.println(volumesize);
+  Serial.print("Volume size (Mb):  ");
+  volumesize /= 1024;
+  Serial.println(volumesize);
+  Serial.print("Volume size (Gb):  ");
+  Serial.println((float)volumesize / 1024.0);
+
+  Serial.println("\nFiles found on the card (name, date and size in bytes): ");
+  root.openRoot(volume);
+
+  // list all files in the card with date and size
+  root.ls(LS_R | LS_DATE | LS_SIZE);
+}
+
+void loop(void) {
+}
diff --git a/variants/standart/pins_arduino.h b/variants/standart/pins_arduino.h
index 52624fc..d42138d 100644
--- a/variants/standart/pins_arduino.h
+++ b/variants/standart/pins_arduino.h
@@ -62,6 +62,8 @@ GPIO_TypeDef* digitalPinToPort(uint32_t digPinNumber);
 HAL_PinsTypeDef digitalPinToBitMask(uint32_t digPinNumber);
 // оtotal number of pins available for initialization
 uint16_t pinCommonQty(void);
+// the function returns a reference to the OUTPUT address of the GPIO register
+uint32_t* portOutputRegister(GPIO_TypeDef* GPIO_x);
 
 // ADC
 // determines the ADC channel number by the board pin number
diff --git a/variants/standart/variant.c b/variants/standart/variant.c
index 6b9fe62..7d9f779 100644
--- a/variants/standart/variant.c
+++ b/variants/standart/variant.c
@@ -94,6 +94,12 @@ uint16_t pinCommonQty(void)
   return (uint16_t)(sizeof(digitalPinToGpioPinArray)/sizeof(digitalPinToGpioPinArray[0]));
 }
 
+// the function returns a reference to the OUTPUT address of the GPIO register
+uint32_t* portOutputRegister(GPIO_TypeDef* GPIO_x)
+{
+  return &GPIO_x->OUTPUT_;
+}
+
 // ---------------------- АЦП ---------------------- //
 // determines the ADC channel number by the board pin number
 uint32_t analogInputToChannelNumber(uint32_t PinNumber)