esp32[c3|c6|h2]: Add BMP180 sensor support

Documentation/platforms/risc-v/esp32c3/boards/esp32c3-generic/index.rst

@@ -53,6 +53,17 @@ All of the configurations presented below can be tested by running the following
 Where <config_name> is the name of board configuration you want to use, i.e.: nsh, buttons, wifi...
 Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
 
+bmp180
+------
+
+This configuration enables the use of the BMP180 pressure sensor over I2C.
+You can check that the sensor is working by using the ``bmp180`` application::
+
+    nsh> bmp180
+    Pressure value = 91531
+    Pressure value = 91526
+    Pressure value = 91525
+
 coremark
 --------
 

Documentation/platforms/risc-v/esp32c6/boards/esp32c6-devkitc/index.rst

@@ -88,6 +88,17 @@ All of the configurations presented below can be tested by running the following
 Where <config_name> is the name of board configuration you want to use, i.e.: nsh, buttons, wifi...
 Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
 
+bmp180
+------
+
+This configuration enables the use of the BMP180 pressure sensor over I2C.
+You can check that the sensor is working by using the ``bmp180`` application::
+
+    nsh> bmp180
+    Pressure value = 91531
+    Pressure value = 91526
+    Pressure value = 91525
+
 coremark
 --------
 

Documentation/platforms/risc-v/esp32c6/boards/esp32c6-devkitm/index.rst

@@ -88,6 +88,17 @@ All of the configurations presented below can be tested by running the following
 Where <config_name> is the name of board configuration you want to use, i.e.: nsh, buttons, wifi...
 Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
 
+bmp180
+------
+
+This configuration enables the use of the BMP180 pressure sensor over I2C.
+You can check that the sensor is working by using the ``bmp180`` application::
+
+    nsh> bmp180
+    Pressure value = 91531
+    Pressure value = 91526
+    Pressure value = 91525
+
 coremark
 --------
 

Documentation/platforms/risc-v/esp32h2/boards/esp32h2-devkit/index.rst

@@ -87,6 +87,17 @@ All of the configurations presented below can be tested by running the following
 Where <config_name> is the name of board configuration you want to use, i.e.: nsh, buttons, wifi...
 Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
 
+bmp180
+------
+
+This configuration enables the use of the BMP180 pressure sensor over I2C.
+You can check that the sensor is working by using the ``bmp180`` application::
+
+    nsh> bmp180
+    Pressure value = 91531
+    Pressure value = 91526
+    Pressure value = 91525
+
 coremark
 --------
 

boards/risc-v/esp32c3/common/include/esp_board_bmp180.h

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * boards/risc-v/esp32c3/common/include/esp_board_bmp180.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_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+#define __BOARDS_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SENSORS_BMP180
+int board_bmp180_initialize(int devno);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32C3_COMMON_INCLUDE_ESP_BOARD_BMP180_H */

boards/risc-v/esp32c3/common/src/Make.defs

@@ -56,6 +56,10 @@ ifeq ($(CONFIG_ESPRESSIF_WIFI),y)
   CSRCS += esp_board_wlan.c
 endif
 
+ifeq ($(CONFIG_SENSORS_BMP180),y)
+  CSRCS += esp_board_bmp180.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32c3/common/src/esp_board_bmp180.c

@@ -0,0 +1,86 @@
+/****************************************************************************
+ * boards/risc-v/esp32c3/common/src/esp_board_bmp180.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 <nuttx/arch.h>
+#include <nuttx/sensors/bmp180.h>
+#include <nuttx/i2c/i2c_master.h>
+
+#include "espressif/esp_i2c.h"
+
+#include "esp_board_bmp180.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_bmp180_initialize(int devno)
+{
+  struct i2c_master_s *i2c;
+  char devpath[12];
+  int ret;
+
+  sninfo("Initializing BMP180!\n");
+
+  /* Initialize BMP180 */
+
+  i2c = esp_i2cbus_initialize(ESPRESSIF_I2C0);
+
+  if (i2c)
+    {
+      /* Then try to register the barometer sensor in I2C0 */
+
+      snprintf(devpath, 12, "/dev/press%d", devno);
+      ret = bmp180_register(devpath, i2c);
+      if (ret < 0)
+        {
+          snerr("ERROR: Error registering BMP180 in I2C0\n");
+        }
+    }
+  else
+    {
+      ret = -ENODEV;
+    }
+
+  return ret;
+}

boards/risc-v/esp32c3/esp32c3-generic/configs/bmp180/defconfig

@@ -0,0 +1,50 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c3-generic"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C3_GENERIC=y
+CONFIG_ARCH_CHIP="esp32c3"
+CONFIG_ARCH_CHIP_ESP32C3_GENERIC=y
+CONFIG_ARCH_INTERRUPTSTACK=1536
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_ESPRESSIF_I2C0=y
+CONFIG_EXAMPLES_BMP180=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_BMP180=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32c3/esp32c3-generic/src/esp32c3_bringup.c

@@ -37,6 +37,7 @@
 #include "esp_board_ledc.h"
 #include "esp_board_spiflash.h"
 #include "esp_board_i2c.h"
+#include "esp_board_bmp180.h"
 
 #ifdef CONFIG_WATCHDOG
 #  include "espressif/esp_wdt.h"
@@ -269,6 +270,18 @@ int esp_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_BMP180
+  /* Try to register BMP180 device in I2C0 */
+
+  ret = board_bmp180_initialize(0);
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize BMP180 "
+             "Driver for I2C0: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_TWAI
 
   /* Initialize TWAI and register the TWAI driver. */

boards/risc-v/esp32c6/common/include/esp_board_bmp180.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * boards/risc-v/esp32c6/common/include/esp_board_bmp180.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_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+#define __BOARDS_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SENSORS_BMP180
+int board_bmp180_initialize(int devno);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32C6_COMMON_INCLUDE_ESP_BOARD_BMP180_H */

boards/risc-v/esp32c6/common/src/Make.defs

@@ -56,6 +56,10 @@ ifeq ($(CONFIG_ESPRESSIF_WIFI),y)
   CSRCS += esp_board_wlan.c
 endif
 
+ifeq ($(CONFIG_SENSORS_BMP180),y)
+  CSRCS += esp_board_bmp180.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32c6/common/src/esp_board_bmp180.c

@@ -0,0 +1,86 @@
+/****************************************************************************
+ * boards/risc-v/esp32c6/common/src/esp_board_bmp180.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 <nuttx/arch.h>
+#include <nuttx/sensors/bmp180.h>
+#include <nuttx/i2c/i2c_master.h>
+
+#include "espressif/esp_i2c.h"
+
+#include "esp_board_bmp180.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_bmp180_initialize(int devno)
+{
+  struct i2c_master_s *i2c;
+  char devpath[12];
+  int ret;
+
+  sninfo("Initializing BMP180!\n");
+
+  /* Initialize BMP180 */
+
+  i2c = esp_i2cbus_initialize(ESPRESSIF_I2C0);
+
+  if (i2c)
+    {
+      /* Then try to register the barometer sensor in I2C0 */
+
+      snprintf(devpath, 12, "/dev/press%d", devno);
+      ret = bmp180_register(devpath, i2c);
+      if (ret < 0)
+        {
+          snerr("ERROR: Error registering BMP180 in I2C0\n");
+        }
+    }
+  else
+    {
+      ret = -ENODEV;
+    }
+
+  return ret;
+}

boards/risc-v/esp32c6/esp32c6-devkitc/configs/bmp180/defconfig

@@ -0,0 +1,52 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c6-devkitc"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C6_DEVKITC=y
+CONFIG_ARCH_CHIP="esp32c6"
+CONFIG_ARCH_CHIP_ESP32C6=y
+CONFIG_ARCH_CHIP_ESP32C6WROOM1=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_ESPRESSIF_ESP32C6=y
+CONFIG_ESPRESSIF_I2C0=y
+CONFIG_EXAMPLES_BMP180=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_BMP180=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_bringup.c

@@ -37,6 +37,7 @@
 #include "esp_board_ledc.h"
 #include "esp_board_spiflash.h"
 #include "esp_board_i2c.h"
+#include "esp_board_bmp180.h"
 
 #ifdef CONFIG_WATCHDOG
 #  include "espressif/esp_wdt.h"
@@ -238,6 +239,18 @@ int esp_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_BMP180
+  /* Try to register BMP180 device in I2C0 */
+
+  ret = board_bmp180_initialize(0);
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize BMP180 "
+             "Driver for I2C0: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_TWAI0
 
   /* Initialize TWAI and register the TWAI driver. */

boards/risc-v/esp32c6/esp32c6-devkitm/configs/bmp180/defconfig

@@ -0,0 +1,52 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32c6-devkitm"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32C6_DEVKITM=y
+CONFIG_ARCH_CHIP="esp32c6"
+CONFIG_ARCH_CHIP_ESP32C6=y
+CONFIG_ARCH_CHIP_ESP32C6MINI1=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_ESPRESSIF_ESP32C6=y
+CONFIG_ESPRESSIF_I2C0=y
+CONFIG_EXAMPLES_BMP180=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_BMP180=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32c6/esp32c6-devkitm/src/esp32c6_bringup.c

@@ -37,6 +37,7 @@
 #include "esp_board_ledc.h"
 #include "esp_board_spiflash.h"
 #include "esp_board_i2c.h"
+#include "esp_board_bmp180.h"
 
 #ifdef CONFIG_WATCHDOG
 #  include "espressif/esp_wdt.h"
@@ -238,6 +239,18 @@ int esp_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_BMP180
+  /* Try to register BMP180 device in I2C0 */
+
+  ret = board_bmp180_initialize(0);
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize BMP180 "
+             "Driver for I2C0: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_TWAI0
 
   /* Initialize TWAI and register the TWAI driver. */

boards/risc-v/esp32h2/common/include/esp_board_bmp180.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * boards/risc-v/esp32h2/common/include/esp_board_bmp180.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_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+#define __BOARDS_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_BMP180_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SENSORS_BMP180
+int board_bmp180_initialize(int devno);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_RISCV_ESP32H2_COMMON_INCLUDE_ESP_BOARD_BMP180_H */

boards/risc-v/esp32h2/common/src/Make.defs

@@ -52,6 +52,10 @@ ifeq ($(CONFIG_ESPRESSIF_TWAI),y)
   CSRCS += esp_board_twai.c
 endif
 
+ifeq ($(CONFIG_SENSORS_BMP180),y)
+  CSRCS += esp_board_bmp180.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

boards/risc-v/esp32h2/common/src/esp_board_bmp180.c

@@ -0,0 +1,85 @@
+/****************************************************************************
+ * boards/risc-v/esp32h2/common/src/esp_board_bmp180.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 <nuttx/arch.h>
+#include <nuttx/sensors/bmp180.h>
+#include <nuttx/i2c/i2c_master.h>
+
+#include "espressif/esp_i2c.h"
+
+#include "esp_board_bmp180.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_bmp180_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_bmp180_initialize(int devno)
+{
+  struct i2c_master_s *i2c;
+  char devpath[12];
+  int ret;
+
+  sninfo("Initializing BMP180!\n");
+
+  /* Initialize BMP180 */
+
+  i2c = esp_i2cbus_initialize(ESPRESSIF_I2C0);
+
+  if (i2c)
+    {
+      /* Then try to register the barometer sensor in I2C0 */
+
+      snprintf(devpath, 12, "/dev/press%d", devno);
+      ret = bmp180_register(devpath, i2c);
+      if (ret < 0)
+        {
+          snerr("ERROR: Error registering BMP180 in I2C0\n");
+        }
+    }
+  else
+    {
+      ret = -ENODEV;
+    }
+
+  return ret;
+}

boards/risc-v/esp32h2/esp32h2-devkit/configs/bmp180/defconfig

@@ -0,0 +1,51 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="esp32h2-devkit"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32H2_DEVKIT=y
+CONFIG_ARCH_CHIP="esp32h2"
+CONFIG_ARCH_CHIP_ESP32H2=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARDCTL_RESET=y
+CONFIG_BOARD_LOOPSPERMSEC=15000
+CONFIG_BUILTIN=y
+CONFIG_DEV_ZERO=y
+CONFIG_ESPRESSIF_ESP32H2=y
+CONFIG_ESPRESSIF_I2C0=y
+CONFIG_EXAMPLES_BMP180=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_STRERROR=y
+CONFIG_PREALLOC_TIMERS=0
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_BACKTRACE=y
+CONFIG_SCHED_WAITPID=y
+CONFIG_SENSORS=y
+CONFIG_SENSORS_BMP180=y
+CONFIG_START_DAY=29
+CONFIG_START_MONTH=11
+CONFIG_START_YEAR=2019
+CONFIG_SYSTEM_DUMPSTACK=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_SERIAL_CONSOLE=y

boards/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_bringup.c

@@ -37,6 +37,7 @@
 #include "esp_board_ledc.h"
 #include "esp_board_spiflash.h"
 #include "esp_board_i2c.h"
+#include "esp_board_bmp180.h"
 
 #ifdef CONFIG_WATCHDOG
 #  include "espressif/esp_wdt.h"
@@ -230,6 +231,18 @@ int esp_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_BMP180
+  /* Try to register BMP180 device in I2C0 */
+
+  ret = board_bmp180_initialize(0);
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize BMP180 "
+             "Driver for I2C0: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_ESPRESSIF_TWAI
 
   /* Initialize TWAI and register the TWAI driver. */