boards: cxd56xx: Add board function for scd41 sensor driver

Add board function for SCD41 CO2, temperature and humidity sensor driver.

boards/arm/cxd56xx/common/src/Make.defs

@@ -110,6 +110,10 @@ ifeq ($(CONFIG_SENSORS_RPR0521RS_SCU),y)
 CSRCS += cxd56_rpr0521rs_scu.c
 endif
 
+ifeq ($(CONFIG_SENSORS_SCD41),y)
+CSRCS += cxd56_scd41_i2c.c
+endif
+
 ifeq ($(CONFIG_NETDEVICES),y)
 CSRCS += cxd56_netinit.c
 endif

boards/arm/cxd56xx/common/src/cxd56_scd41_i2c.c

@@ -0,0 +1,72 @@
+/****************************************************************************
+ * boards/arm/cxd56xx/common/src/cxd56_scd41_i2c.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/board.h>
+
+#include <nuttx/sensors/scd41.h>
+
+#include "cxd56_i2c.h"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_SCD41)
+
+int board_scd41_initialize(FAR const char *devpath, int bus)
+{
+  int ret;
+  FAR struct i2c_master_s *i2c;
+
+  sninfo("Initializing SCD41...\n");
+
+  /* Initialize i2c device */
+
+  i2c = cxd56_i2cbus_initialize(bus);
+  if (!i2c)
+    {
+      snerr("ERROR: Failed to initialize i2c%d.\n", bus);
+      return -ENODEV;
+    }
+
+  ret = scd41_register_i2c(devpath, i2c);
+  if (ret < 0)
+    {
+      snerr("Error registering SCD41.\n");
+    }
+
+  return ret;
+}
+
+#endif

boards/arm/cxd56xx/common/src/cxd56_sensors.c

@@ -216,6 +216,9 @@ static struct sensor_device_s sensor_device[] =
 #if defined(CONFIG_SENSORS_BH1745NUC) || defined(CONFIG_SENSORS_BH1745NUC_SCU)
   _I2C_DEVICE(bh1745nuc, "/dev/color"), /* Color */
 #endif
+#if defined(CONFIG_SENSORS_SCD41)
+  _I2C_DEVICE(scd41, "/dev/co2"), /* CO2 */
+#endif
 };
 
 /****************************************************************************

boards/arm/cxd56xx/spresense/include/board.h

@@ -61,6 +61,7 @@
 #include "cxd56_kx022.h"
 #include "cxd56_lt1pa01.h"
 #include "cxd56_rpr0521rs.h"
+#include "cxd56_scd41.h"
 #include "cxd56_sensors.h"
 
 #include "cxd56_isx012.h"

boards/arm/cxd56xx/spresense/include/cxd56_scd41.h

@@ -0,0 +1,71 @@
+/****************************************************************************
+ * boards/arm/cxd56xx/spresense/include/cxd56_scd41.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_SCD41_H
+#define __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_SCD41_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_scd41_initialize
+ *
+ * Description:
+ *   Initialize SCD41 i2c driver and register the SCD41 device.
+ *
+ ****************************************************************************/
+
+#if defined (CONFIG_SENSORS_SCD41)
+int board_scd41_initialize(FAR const char *devpath, int bus);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_CXD56XX_SPRESENSE_INCLUDE_CXD56_SCD41_H */