diff --git a/drivers/include/lps331ap.h b/drivers/include/lps331ap.h
index 096bc6ed6d..cda4e5b197 100644
--- a/drivers/include/lps331ap.h
+++ b/drivers/include/lps331ap.h
@@ -96,7 +96,7 @@ int lps331ap_read_pres(const lps331ap_t *dev);
  * @param[in] dev       device descriptor of sensor to enable
  *
  * @return              0 on success
- * @return              -1 on error
+ * @return              <0 on error
  */
 int lps331ap_enable(const lps331ap_t *dev);
 
@@ -106,7 +106,7 @@ int lps331ap_enable(const lps331ap_t *dev);
  * @param[in] dev       device descriptor of sensor to disable
  *
  * @return              0 on success
- * @return              -1 on error
+ * @return              <0 on error
  */
 int lps331ap_disable(const lps331ap_t *dev);
 
diff --git a/drivers/lps331ap/lps331ap.c b/drivers/lps331ap/lps331ap.c
index b5773bb04f..83df9215b3 100644
--- a/drivers/lps331ap/lps331ap.c
+++ b/drivers/lps331ap/lps331ap.c
@@ -29,11 +29,6 @@
 #include "lps331ap.h"
 #include "lps331ap-internal.h"
 
-/**
- * @brief default I2C bus speed for this sensor
- */
-#define BUS_SPEED           I2C_SPEED_FAST
-
 /**
  * @brief pressure divider for norming pressure output
  */
@@ -57,17 +52,11 @@ int lps331ap_init(lps331ap_t *dev, const lps331ap_params_t * params)
 
     /* Acquire exclusive access to the bus. */
     i2c_acquire(DEV_I2C);
-    /* initialize underlying I2C bus */
-    if (i2c_init_master(DEV_I2C, BUS_SPEED) < 0) {
-        /* Release the bus for other threads. */
-        i2c_release(DEV_I2C);
-        return -1;
-    }
 
     /* configure device, for simple operation only CTRL_REG1 needs to be touched */
     tmp = LPS331AP_CTRL_REG1_DBDU | LPS331AP_CTRL_REG1_PD |
           (DEV_RATE << LPS331AP_CTRL_REG1_ODR_POS);
-    if (i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp) != 1) {
+    if (i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp, 0) < 0) {
         i2c_release(DEV_I2C);
         return -1;
     }
@@ -83,9 +72,9 @@ int lps331ap_read_temp(const lps331ap_t *dev)
     float res = TEMP_BASE;      /* reference value -> see datasheet */
 
     i2c_acquire(DEV_I2C);
-    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_TEMP_OUT_L, &tmp);
+    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_TEMP_OUT_L, &tmp, 0);
     val |= tmp;
-    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_TEMP_OUT_H, &tmp);
+    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_TEMP_OUT_H, &tmp, 0);
     i2c_release(DEV_I2C);
     val |= ((uint16_t)tmp << 8);
 
@@ -103,11 +92,11 @@ int lps331ap_read_pres(const lps331ap_t *dev)
     float res;
 
     i2c_acquire(DEV_I2C);
-    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_XL, &tmp);
+    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_XL, &tmp, 0);
     val |= tmp;
-    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_L, &tmp);
+    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_L, &tmp, 0);
     val |= ((uint32_t)tmp << 8);
-    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_H, &tmp);
+    i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_PRESS_OUT_H, &tmp, 0);
     i2c_release(DEV_I2C);
     val |= ((uint32_t)tmp << 16);
     /* see if value is negative */
@@ -128,12 +117,12 @@ int lps331ap_enable(const lps331ap_t *dev)
     int status;
 
     i2c_acquire(DEV_I2C);
-    if (i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, &tmp) != 1) {
+    if (i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, &tmp, 0) < 0) {
         i2c_release(DEV_I2C);
         return -1;
     }
     tmp |= (LPS331AP_CTRL_REG1_PD);
-    status = i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp);
+    status = i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp, 0);
     i2c_release(DEV_I2C);
 
     return status;
@@ -145,12 +134,12 @@ int lps331ap_disable(const lps331ap_t *dev)
     int status;
 
     i2c_acquire(DEV_I2C);
-    if (i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, &tmp) != 1) {
+    if (i2c_read_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, &tmp, 0) < 0) {
         i2c_release(DEV_I2C);
         return -1;
     }
     tmp &= ~(LPS331AP_CTRL_REG1_PD);
-    status = i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp);
+    status = i2c_write_reg(DEV_I2C, DEV_ADDR, LPS331AP_REG_CTRL_REG1, tmp, 0);
     i2c_release(DEV_I2C);
 
     return status;