Merge pull request #9386 from Hyungsin/forupstream_hdc1000

drivers/hdc1000: change renew_interval to a parameter

drivers/hdc1000/hdc1000.c

@@ -31,10 +31,6 @@
 #define ENABLE_DEBUG    (0)
 #include "debug.h"
 
-#ifndef HDC1000_RENEW_INTERVAL
-#define HDC1000_RENEW_INTERVAL     (1000000ul)
-#endif
-
 static int16_t temp_cached, hum_cached;
 static uint32_t last_read_time;
 
@@ -144,7 +140,7 @@ int hdc1000_read_cached(const hdc1000_t *dev, int16_t *temp, int16_t *hum)
     uint32_t now = xtimer_now_usec();
 
     /* check if readings are outdated */
-    if (now - last_read_time > HDC1000_RENEW_INTERVAL) {
+    if (now - last_read_time > dev->p.renew_interval) {
         /* update last_read_time */
         if (hdc1000_read(dev, &temp_cached, &hum_cached) != HDC1000_OK) {
             return HDC1000_BUSERR;

drivers/hdc1000/include/hdc1000_params.h

@@ -32,22 +32,26 @@ extern "C" {
  * @{
  */
 #ifndef HDC1000_PARAM_I2C
-#define HDC1000_PARAM_I2C           I2C_DEV(0)
+#define HDC1000_PARAM_I2C            I2C_DEV(0)
 #endif
 #ifndef HDC1000_PARAM_ADDR
-#define HDC1000_PARAM_ADDR          (HDC1000_I2C_ADDRESS)
+#define HDC1000_PARAM_ADDR           (HDC1000_I2C_ADDRESS)
 #endif
 #ifndef HDC1000_PARAM_RES
-#define HDC1000_PARAM_RES           HDC1000_14BIT
+#define HDC1000_PARAM_RES            HDC1000_14BIT
+#endif
+#ifndef HDC1000_PARAM_RENEW_INTERVAL
+#define HDC1000_PARAM_RENEW_INTERVAL (1000000ul)
 #endif
 
 #ifndef HDC1000_PARAMS
-#define HDC1000_PARAMS              { .i2c  = HDC1000_PARAM_I2C,  \
-                                      .addr = HDC1000_PARAM_ADDR, \
-                                      .res  = HDC1000_PARAM_RES }
+#define HDC1000_PARAMS               { .i2c  = HDC1000_PARAM_I2C,  \
+                                       .addr = HDC1000_PARAM_ADDR, \
+                                       .res  = HDC1000_PARAM_RES, \
+                                       .renew_interval = HDC1000_PARAM_RENEW_INTERVAL }
 #endif
 #ifndef HDC1000_SAUL_INFO
-#define HDC1000_SAUL_INFO           { .name = "hdc1000" }
+#define HDC1000_SAUL_INFO            { .name = "hdc1000" }
 #endif
 /**@}*/
 

drivers/include/hdc1000.h

@@ -88,9 +88,10 @@ typedef enum {
  * @brief   Parameters needed for device initialization
  */
 typedef struct {
-    i2c_t i2c;              /**< bus the device is connected to */
-    uint8_t addr;           /**< address on that bus */
-    hdc1000_res_t res;      /**< resolution used for sampling temp and hum */
+    i2c_t i2c;               /**< bus the device is connected to */
+    uint8_t addr;            /**< address on that bus */
+    hdc1000_res_t res;       /**< resolution used for sampling temp and hum */
+    uint32_t renew_interval; /**< interval for cache renewal */
 } hdc1000_params_t;
 
 /**