driver, mag3110: add saul auto init

drivers/mag3110/mag3110_saul.c

@@ -24,7 +24,7 @@
 #include "saul.h"
 #include "mag3110.h"
 
-static int read_acc(void *dev, phydat_t *res)
+static int read_mag(void *dev, phydat_t *res)
 {
     mag3110_read((mag3110_t *)dev, (mag3110_data_t *)res);
 
@@ -35,7 +35,7 @@ static int read_acc(void *dev, phydat_t *res)
 }
 
 const saul_driver_t mag3110_saul_driver = {
-    .read = read_acc,
+    .read = read_mag,
     .write = saul_notsup,
     .type = SAUL_SENSE_MAG,
 };

sys/auto_init/auto_init.c

@@ -271,6 +271,10 @@ void auto_init(void)
     extern void auto_init_lis3dh(void);
     auto_init_lis3dh();
 #endif
+#ifdef MODULE_MAG3110
+    extern void auto_init_mag3110(void);
+    auto_init_mag3110();
+#endif
 #ifdef MODULE_MMA8X5X
     extern void auto_init_mma8x5x(void);
     auto_init_mma8x5x();

sys/auto_init/saul/auto_init_mag3110.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2017 HAW Hamburg
+ *
+ * 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 MAG3110 magnetometers
+ *
+ * @author      Sebastian Meiling <s@mlng.net>
+ *
+ * @}
+ */
+
+#ifdef MODULE_MAG3110
+
+#include "log.h"
+#include "saul_reg.h"
+
+#include "mag3110.h"
+#include "mag3110_params.h"
+
+/**
+ * @brief   Define the number of configured sensors
+ */
+#define MAG3110_NUM     (sizeof(mag3110_params) / sizeof(mag3110_params[0]))
+
+/**
+ * @brief   Allocate memory for the device descriptors
+ */
+static mag3110_t mag3110_devs[MAG3110_NUM];
+
+/**
+ * @brief   Memory for the SAUL registry entries
+ */
+static saul_reg_t saul_entries[MAG3110_NUM];
+
+/**
+ * @brief   Reference the driver struct
+ * @{
+ */
+extern const saul_driver_t mag3110_saul_driver;
+/** @} */
+
+void auto_init_mag3110(void)
+{
+    for (unsigned i = 0; i < MAG3110_NUM; i++) {
+        LOG_DEBUG("[auto_init_saul] initializing mag3110 #%u\n", i);
+
+        if (mag3110_init(&mag3110_devs[i], &mag3110_params[i]) != MAG3110_OK) {
+            LOG_ERROR("[auto_init_saul] error initializing mag3110 #%u\n", i);
+            continue;
+        }
+
+        saul_entries[i].dev = &(mag3110_devs[i]);
+        saul_entries[i].name = mag3110_saul_info[i].name;
+        saul_entries[i].driver = &mag3110_saul_driver;
+        saul_reg_add(&(saul_entries[i]));
+    }
+}
+
+#else
+typedef int dont_be_pedantic;
+#endif /* MODULE_MAG3110 */