diff --git a/Include/system/stm32f0xx_hal_conf.h b/Include/system/stm32f0xx_hal_conf.h
--- a/Include/system/stm32f0xx_hal_conf.h
+++ b/Include/system/stm32f0xx_hal_conf.h
@@ -18,7 +18,7 @@
 //#define HAL_CRYP_MODULE_ENABLED   
 //#define HAL_TSC_MODULE_ENABLED   
 //#define HAL_DAC_MODULE_ENABLED   
-//#define HAL_I2C_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
 //#define HAL_I2S_MODULE_ENABLED   
 #define HAL_IWDG_MODULE_ENABLED
 //#define HAL_LCD_MODULE_ENABLED   
diff --git a/Libraries/aprs/aprs.c b/Libraries/aprs/aprs.c
--- a/Libraries/aprs/aprs.c
+++ b/Libraries/aprs/aprs.c
@@ -24,6 +24,7 @@
 #include <stdlib.h>
 
 #include "config.h"
+#include "pressure.h"
 #include "aprs.h"
 #include "gps.h"
 //#include "gps.h"
@@ -78,11 +79,11 @@ void aprs_send(void)
   ax25_send_string(tmpBuffer);
 
   // Pressure
-  snprintf(tmpBuffer, 128, "%d,", 23);
+  snprintf(tmpBuffer, 128, "%d,", pressure_getpressure());
   ax25_send_string(tmpBuffer);
   
   // Temperature
-  snprintf(tmpBuffer, 128, "%d,", 77);
+  snprintf(tmpBuffer, 128, "%d,", pressure_gettemp());
   ax25_send_string(tmpBuffer);
 
   // HDOP
diff --git a/Source/main.c b/Source/main.c
--- a/Source/main.c
+++ b/Source/main.c
@@ -13,6 +13,7 @@
 #include "si446x/si446x.h"
 #include "aprs/aprs.h"
 #include "aprs/afsk.h"
+#include "pressure.h"
 #include "gps.h"
 
 
@@ -26,6 +27,7 @@ int main(void)
   afsk_init();
   si446x_init();
   gps_poweron();
+  pressure_init();
 
   // Software timers
   uint32_t last_transmission = HAL_GetTick();
@@ -37,6 +39,7 @@ int main(void)
 	  if(HAL_GetTick() - last_transmission > 700)
 	  {
 		  gps_update_data(); // Will always return at 1hz rate (default measurement rate)
+		  pressure_read();
 		  aprs_send();
 		  //while(afsk_busy());
 
diff --git a/Source/system/interrupts.c b/Source/system/interrupts.c
--- a/Source/system/interrupts.c
+++ b/Source/system/interrupts.c
@@ -8,6 +8,7 @@
 #include "stm32f0xx.h"
 #include "system/gpio.h"
 #include "aprs/afsk.h"
+#include "pressure.h"
 
 // Systick
 void SysTick_Handler(void)
@@ -26,3 +27,14 @@ void TIM1_BRK_UP_TRG_COM_IRQHandler(void
 {
   HAL_TIM_IRQHandler(afsk_timer_gethandle());
 }
+
+
+// Handle I2C interrupts
+void I2C1_IRQHandler(void)
+{
+	if (pressure_get_i2c_handle()->Instance->ISR & (I2C_FLAG_BERR | I2C_FLAG_ARLO | I2C_FLAG_OVR)) {
+		HAL_I2C_ER_IRQHandler(pressure_get_i2c_handle());
+	} else {
+		HAL_I2C_EV_IRQHandler(pressure_get_i2c_handle());
+	}
+}