diff --git a/drivers/include/io1_xplained.h b/drivers/include/io1_xplained.h
index 40f4c792df..c7bd76de3d 100644
--- a/drivers/include/io1_xplained.h
+++ b/drivers/include/io1_xplained.h
@@ -81,38 +81,13 @@ typedef struct {
  *
  * @return                  IO1_XPLAINED_OK on success
  * @return                  -IO1_XPLAINED_NOTEMP if temperature sensor initialization failed
+ * @return                  -IO1_XPLAINED_NOSDCARD if sdcard initialization failed
  * @return                  -IO1_XPLAINED_NOLED if LED initialization failed
  * @return                  -IO1_XPLAINED_NOGPIO1 if GPIO1 initialization failed
  * @return                  -IO1_XPLAINED_NOGPIO2 if GPIO2 initialization failed
  */
 int io1_xplained_init(io1_xplained_t *dev, const io1_xplained_params_t *params);
 
-/**
- * @brief   Read temperature value from the given IO1 Xplained extension, returned in °C
- *
- * @param[in] dev           Device descriptor of IO1 Xplained to read from
- * @param[out] temperature  Temperature in °C
- *
- * @return                  IO1_XPLAINED_READ_OK on success
- * @return                  -IO1_XPLAINED_READ_ERR if temperature sensor read failed
- */
-int io1_xplained_read_temperature(const io1_xplained_t *dev, float *temperature);
-
-/**
- * @brief   Set the on-board led of the IO1 Xplained extension
- */
-void io1_xplained_set_led(void);
-
-/**
- * @brief   Clear the on-board led of the IO1 Xplained extension
- */
-void io1_xplained_clear_led(void);
-
-/**
- * @brief   Toggle the on-board led of the IO1 Xplained extension
- */
-void io1_xplained_toggle_led(void);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/drivers/io1_xplained/io1_xplained.c b/drivers/io1_xplained/io1_xplained.c
index c4aa592eca..3ec6e1a9b2 100644
--- a/drivers/io1_xplained/io1_xplained.c
+++ b/drivers/io1_xplained/io1_xplained.c
@@ -18,13 +18,15 @@
  * @}
  */
 
-#include "log.h"
 #include "io1_xplained.h"
 #include "io1_xplained_internals.h"
 #include "at30tse75x.h"
 #include "periph/i2c.h"
 #include "periph/gpio.h"
 
+#define ENABLE_DEBUG (0)
+#include "debug.h"
+
 /*---------------------------------------------------------------------------*
  *                          IO1 Xplained Core API                            *
  *---------------------------------------------------------------------------*/
@@ -36,8 +38,9 @@ int io1_xplained_init(io1_xplained_t *dev, const io1_xplained_params_t *params)
     /* Initialize I2C interface */
     if (at30tse75x_init(&dev->temp,
                         I2C_DEV(0),
-                        I2C_SPEED_NORMAL, (TEMPERATURE_BASE_ADDR | dev->params.addr)) < 0) {
-        LOG_ERROR("Cannot initialize temperature sensor.\n");
+                        I2C_SPEED_NORMAL,
+                        (TEMPERATURE_BASE_ADDR | dev->params.addr)) < 0) {
+        DEBUG("[io1_xplained] Cannot initialize temperature sensor.\n");
         return -IO1_XPLAINED_NOTEMP;
     }
 
@@ -45,45 +48,21 @@ int io1_xplained_init(io1_xplained_t *dev, const io1_xplained_params_t *params)
     at30tse75x_set_resolution(&dev->temp, AT30TSE75X_RESOLUTION_12BIT);
 
     if (gpio_init(IO1_LED_PIN, GPIO_OUT) < 0) {
-        LOG_ERROR("GPIO LED not enabled\n");
+        DEBUG("[io1_xplained] LED initialization failed\n");
         return -IO1_XPLAINED_NOLED;
     }
 
     if (gpio_init(IO1_GPIO1_PIN, GPIO_OUT) < 0) {
-        LOG_ERROR("GPIO1 not enabled\n");
+        DEBUG("[io1_xplained] GPIO1 initialization failed\n");
         return -IO1_XPLAINED_NOGPIO1;
     }
 
     if (gpio_init(IO1_GPIO2_PIN, GPIO_OUT) < 0) {
-        LOG_ERROR("GPIO2 not enabled\n");
+        DEBUG("[io1_xplained] GPIO2 initialization failed\n");
         return -IO1_XPLAINED_NOGPIO2;
     }
 
-    LOG_DEBUG("IO1 Xplained extension initialized!\n");
+    DEBUG("IO1 Xplained extension initialized with success!\n");
 
     return IO1_XPLAINED_OK;
 }
-
-int io1_xplained_read_temperature(const io1_xplained_t *dev, float *temperature)
-{
-    if (at30tse75x_get_temperature(&dev->temp, temperature) < 0) {
-        LOG_ERROR("Cannot read temperature sensor.\n");
-        return -IO1_XPLAINED_READ_ERR;
-    }
-    return IO1_XPLAINED_READ_OK;
-}
-
-void io1_xplained_set_led(void)
-{
-    gpio_set(IO1_LED_PIN);
-}
-
-void io1_xplained_clear_led(void)
-{
-    gpio_clear(IO1_LED_PIN);
-}
-
-void io1_xplained_toggle_led(void)
-{
-    gpio_toggle(IO1_LED_PIN);
-}
diff --git a/drivers/io1_xplained/io1_xplained_saul.c b/drivers/io1_xplained/io1_xplained_saul.c
index ed56e621a0..bf051df408 100644
--- a/drivers/io1_xplained/io1_xplained_saul.c
+++ b/drivers/io1_xplained/io1_xplained_saul.c
@@ -22,12 +22,14 @@
 
 #include "saul.h"
 #include "io1_xplained.h"
+#include "at30tse75x.h"
 
 static float temperature;
 
 static int read_temperature(const void *dev, phydat_t *res)
 {
-    io1_xplained_read_temperature((const io1_xplained_t *)dev, &temperature);
+    const io1_xplained_t *io1 = (const io1_xplained_t *)dev;
+    at30tse75x_get_temperature(&io1->temp, &temperature);
     res->val[0] = (int)(temperature * 100.0);
     res->unit = UNIT_TEMP_C;
     res->scale = -2;