sys/auto_init: Added auto initialization for pH OEM driver

sys/auto_init/auto_init.c

@@ -445,6 +445,10 @@ void auto_init(void)
     extern void auto_init_mpu9150(void);
     auto_init_mpu9150();
 #endif
+#ifdef MODULE_PH_OEM
+    extern void auto_init_ph_oem(void);
+    auto_init_ph_oem();
+#endif
 #ifdef MODULE_PIR
     extern void auto_init_pir(void);
     auto_init_pir();

sys/auto_init/saul/auto_init_ph_oem.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2019 University of Applied Sciences Emden / Leer
+ *
+ * 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     sys_auto_init_saul
+ * @{
+ *
+ * @file
+ * @brief       Auto initialization of Atlas Scientific pH OEM sensor
+ *
+ * @author      igor.knippenberg@gmail.com
+ *
+ * @}
+ */
+
+#ifdef MODULE_PH_OEM
+
+#include "assert.h"
+#include "log.h"
+
+#include "saul_reg.h"
+#include "ph_oem.h"
+#include "ph_oem_params.h"
+
+/**
+ * @brief   Define the number of configured sensors
+ */
+#define PH_OEM_NUM   (sizeof(ph_oem_params) / sizeof(ph_oem_params[0]))
+
+/**
+ * @brief   Allocate memory for the device descriptors
+ */
+static ph_oem_t ph_oem_devs[PH_OEM_NUM];
+
+/**
+ * @brief   Memory for the SAUL registry entries
+ */
+static saul_reg_t saul_entries[PH_OEM_NUM];
+
+/**
+ * @brief   Define the number of saul info
+ */
+#define PH_OEM_INFO_NUM (sizeof(ph_oem_saul_info) / sizeof(ph_oem_saul_info[0]))
+
+/**
+ * @brief   Reference the driver struct
+ */
+extern saul_driver_t ph_oem_saul_driver;
+
+void auto_init_ph_oem(void)
+{
+    assert(PH_OEM_INFO_NUM == PH_OEM_NUM);
+
+    for (unsigned i = 0; i < PH_OEM_NUM; i++) {
+        LOG_DEBUG("[auto_init_saul] initializing ph_oem #%d\n", i);
+        if (ph_oem_init(&ph_oem_devs[i], &ph_oem_params[i]) < 0) {
+            LOG_ERROR("[auto_init_saul] error initializing ph_oem #%d\n", i);
+            continue;
+        }
+
+        saul_entries[i].dev = &(ph_oem_devs[i]);
+        saul_entries[i].name = ph_oem_saul_info[i].name;
+        saul_entries[i].driver = &ph_oem_saul_driver;
+        saul_reg_add(&(saul_entries[i]));
+    }
+}
+
+#else
+typedef int dont_be_pedantic;
+#endif /* MODULE_PH_OEM */