diff --git a/variants/elsomik/pins_arduino.h b/variants/elsomik/pins_arduino.h
index a311bcb..4382db1 100644
--- a/variants/elsomik/pins_arduino.h
+++ b/variants/elsomik/pins_arduino.h
@@ -131,17 +131,29 @@ TIMER32_TypeDef* pwmPinToTimer(uint32_t digPinNumber);
 HAL_TIMER32_CHANNEL_IndexTypeDef pwmPinToTimerChannel(uint32_t digPinNumber);
 
 // SPI
-#define PIN_SPI_SS    (P1_3)
-#define PIN_SPI_MOSI  (P1_1)
-#define PIN_SPI_MISO  (P1_0)
-#define PIN_SPI_SCK   (P1_2)
+#define SPI_COMMON_QTY  2
+
+#define PIN_SPI_SS      P1_3
+#define PIN_SPI_MOSI    P1_1
+#define PIN_SPI_MISO    P1_0
+#define PIN_SPI_SCK     P1_2
 static const uint8_t SS   = PIN_SPI_SS;
 static const uint8_t MOSI = PIN_SPI_MOSI;
 static const uint8_t MISO = PIN_SPI_MISO;
 static const uint8_t SCK  = PIN_SPI_SCK;
-// functions is needed for compatibility with other boards
-static inline void spi_onBegin(void) {}
-static inline void spi_onEnd(void) {}
+
+#define PIN_SPI1_SS      P0_3
+#define PIN_SPI1_MOSI    P0_1
+#define PIN_SPI1_MISO    P0_0
+#define PIN_SPI1_SCK     P0_2
+static const uint8_t SS1   = PIN_SPI1_SS;
+static const uint8_t MOSI1 = PIN_SPI1_MOSI;
+static const uint8_t MISO1 = PIN_SPI1_MISO;
+static const uint8_t SCK1  = PIN_SPI1_SCK;
+
+// check if pwm is used on spi pins
+void spi_onBegin(uint8_t spiNum);
+static inline void spi_onEnd(uint8_t spiNum){}
 
 // I2C
 #define PIN_WIRE_SDA  (P1_12)
diff --git a/variants/elsomik/variant.c b/variants/elsomik/variant.c
index 0e8baff..3480f52 100644
--- a/variants/elsomik/variant.c
+++ b/variants/elsomik/variant.c
@@ -191,4 +191,32 @@ int8_t digitalPinToInterrupt(uint32_t digPinNumber)
       return i;
   }
   return NOT_AN_INTERRUPT;
+}
+
+// ---------------------- SPI ---------------------- //
+void spi_onBegin(uint8_t spiNum)
+{
+  // On mik32 spi0 needs pin 0.3, spi1 needs pin 1.3 for correct work.
+  // This pins also can be used as pwm. If pwm is working when spi begins, we should stop the pwm channel
+
+  // get pin NSS_IN config
+  uint8_t config;
+  if (spiNum == 1)
+    config = PIN_GET_PAD_CONFIG(PORT_1_CFG, PIN_MASK_TO_PIN_NUMBER(GPIO_PIN_3));
+  else
+    config = PIN_GET_PAD_CONFIG(PORT_0_CFG, PIN_MASK_TO_PIN_NUMBER(GPIO_PIN_3));
+
+  if(config == 2)  // timer for pwm
+  {
+    if (spiNum == 1)
+    {
+      analogWriteStop(P1_3);
+      ErrorMsgHandler("analogWrite(): P1_3 cannot be used as PWM pin while SPI is running");
+    }
+    else
+    {
+      analogWriteStop(P0_3);
+      ErrorMsgHandler("analogWrite(): P0_3 cannot be used as PWM pin while SPI1 is running");
+    }
+  }
 }
\ No newline at end of file
diff --git a/variants/start/pins_arduino.h b/variants/start/pins_arduino.h
index 4231d8a..8a95936 100644
--- a/variants/start/pins_arduino.h
+++ b/variants/start/pins_arduino.h
@@ -143,17 +143,29 @@ TIMER32_TypeDef* pwmPinToTimer(uint32_t digPinNumber);
 HAL_TIMER32_CHANNEL_IndexTypeDef pwmPinToTimerChannel(uint32_t digPinNumber);
 
 // SPI
-#define PIN_SPI_SS    (P1_3)
-#define PIN_SPI_MOSI  (P1_1)
-#define PIN_SPI_MISO  (P1_0)
-#define PIN_SPI_SCK   (P1_2)
+#define SPI_COMMON_QTY  2
+
+#define PIN_SPI_SS      P1_3
+#define PIN_SPI_MOSI    P1_1
+#define PIN_SPI_MISO    P1_0
+#define PIN_SPI_SCK     P1_2
 static const uint8_t SS   = PIN_SPI_SS;
 static const uint8_t MOSI = PIN_SPI_MOSI;
 static const uint8_t MISO = PIN_SPI_MISO;
 static const uint8_t SCK  = PIN_SPI_SCK;
-// functions is needed for compatibility with other boards
-static inline void spi_onBegin(void) {}
-static inline void spi_onEnd(void) {}
+
+#define PIN_SPI1_SS      P0_3
+#define PIN_SPI1_MOSI    P0_1
+#define PIN_SPI1_MISO    P0_0
+#define PIN_SPI1_SCK     P0_2
+static const uint8_t SS1   = PIN_SPI1_SS;
+static const uint8_t MOSI1 = PIN_SPI1_MOSI;
+static const uint8_t MISO1 = PIN_SPI1_MISO;
+static const uint8_t SCK1  = PIN_SPI1_SCK;
+
+// check if pwm is used on spi pins
+void spi_onBegin(uint8_t spiNum);
+static inline void spi_onEnd(uint8_t spiNum){}
 
 // I2C
 #define PIN_WIRE_SDA  (P1_12)
diff --git a/variants/start/variant.c b/variants/start/variant.c
index 82e8e90..c19e64f 100644
--- a/variants/start/variant.c
+++ b/variants/start/variant.c
@@ -205,4 +205,32 @@ int8_t digitalPinToInterrupt(uint32_t digPinNumber)
       return i;
   }
   return NOT_AN_INTERRUPT;
+}
+
+// ---------------------- SPI ---------------------- //
+void spi_onBegin(uint8_t spiNum)
+{
+  // On mik32 spi0 needs pin 0.3, spi1 needs pin 1.3 for correct work.
+  // This pins also can be used as pwm. If pwm is working when spi begins, we should stop the pwm channel
+
+  // get pin NSS_IN config
+  uint8_t config;
+  if (spiNum == 1)
+    config = PIN_GET_PAD_CONFIG(PORT_1_CFG, PIN_MASK_TO_PIN_NUMBER(GPIO_PIN_3));
+  else
+    config = PIN_GET_PAD_CONFIG(PORT_0_CFG, PIN_MASK_TO_PIN_NUMBER(GPIO_PIN_3));
+
+  if(config == 2)  // timer for pwm
+  {
+    if (spiNum == 1)
+    {
+      analogWriteStop(P1_3);
+      ErrorMsgHandler("analogWrite(): P1_3 cannot be used as PWM pin while SPI is running");
+    }
+    else
+    {
+      analogWriteStop(P0_3);
+      ErrorMsgHandler("analogWrite(): P0_3 cannot be used as PWM pin while SPI1 is running");
+    }
+  }
 }
\ No newline at end of file