sys/auto_init: add SAUL initialization for lis2dh12

sys/auto_init/auto_init.c

@@ -363,6 +363,10 @@ auto_init_mpu9150();
     extern void auto_init_adcxx1c(void);
     auto_init_adcxx1c();
 #endif
+#ifdef MODULE_LIS2DH12
+    extern void auto_init_lis2dh12(void);
+    auto_init_lis2dh12();
+#endif
 
 #endif /* MODULE_AUTO_INIT_SAUL */
 

sys/auto_init/saul/auto_init_lis2dh12.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2018 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ *
+ */
+
+/**
+ * @ingroup     auto_init_saul
+ * @{
+ *
+ * @file
+ * @brief       Auto initialization of LIS2DH12 accelerometers
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ *
+ * @}
+ */
+
+#ifdef MODULE_LIS2DH12
+
+#include "log.h"
+#include "assert.h"
+#include "saul_reg.h"
+#include "lis2dh12.h"
+#include "lis2dh12_params.h"
+
+/**
+ * @brief   Number of configured sensors
+ */
+#define LIS2DH12_NUM    (sizeof(lis2dh12_params) / sizeof(lis2dh12_params[0]))
+
+
+/**
+ * @brief   Number of defined SAUL registry info entries
+ */
+#define LIS2DH12_SAULINFO_NUM   (sizeof(lis2dh12_saul_info) / \
+                                 sizeof(lis2dh12_saul_info[0]))
+
+/**
+ * @brief   Allocate memory for the device descriptors
+ */
+static lis2dh12_t lis2dh12_devs[LIS2DH12_NUM];
+
+/**
+ * @brief   Memory for the SAUL registry entries
+ */
+static saul_reg_t saul_entries[LIS2DH12_NUM];
+
+void auto_init_lis2dh12(void)
+{
+    assert(LIS2DH12_NUM == LIS2DH12_SAULINFO_NUM);
+
+    for (unsigned int i = 0; i < LIS2DH12_NUM; i++) {
+        int res;
+
+        LOG_DEBUG("[auto_init_saul] initializing lis2dh12 #%u\n", i);
+
+        res = lis2dh12_init(&lis2dh12_devs[i], &lis2dh12_params[i]);
+        if (res < 0) {
+            LOG_ERROR("[auto_init_saul] error initializing lis2dh12 #%u\n", i);
+            continue;
+        }
+
+        saul_entries[i].dev = &(lis2dh12_devs[i]);
+        saul_entries[i].name = lis2dh12_saul_info[i].name;
+        saul_entries[i].driver = &lis2dh12_saul_driver;
+        saul_reg_add(&(saul_entries[i]));
+    }
+}
+
+#else
+typedef int dont_be_pedantic;
+#endif /* MODULE_LIS2DH12 */