Add support for Bosch BMP388 barometer

2026-10-29 07:53:34 +08:00 · 2019-10-15 23:33:49 -04:00
parent c58cfce6be
commit 1e1549a169
9 changed files with 1577 additions and 1 deletions
@@ -0,0 +1,134 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2019 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file bmp388_i2c.cpp
+ *
+ * I2C interface for BMP388
+ */
+
+#include <drivers/device/i2c.h>
+
+#include "bmp388.h"
+
+#if defined(PX4_I2C_OBDEV_BMP388) || defined(PX4_I2C_EXT_OBDEV_BMP388)
+
+class BMP388_I2C: public device::I2C, public IBMP388
+{
+public:
+	BMP388_I2C(uint8_t bus, uint32_t device, bool external);
+	virtual ~BMP388_I2C() = default;
+
+	bool is_external();
+	int init();
+
+	uint8_t get_reg(uint8_t addr);
+	int get_reg_buf(uint8_t addr, uint8_t *buf, uint8_t len);
+	int set_reg(uint8_t value, uint8_t addr);
+	data_s *get_data(uint8_t addr);
+	calibration_s *get_calibration(uint8_t addr);
+
+	uint32_t get_device_id() const override { return device::I2C::get_device_id(); }
+
+private:
+	struct calibration_s _cal;
+	struct data_s _data;
+	bool _external;
+};
+
+IBMP388 *bmp388_i2c_interface(uint8_t busnum, uint32_t device, bool external)
+{
+	return new BMP388_I2C(busnum, device, external);
+}
+
+BMP388_I2C::BMP388_I2C(uint8_t bus, uint32_t device, bool external) :
+	I2C("BMP388_I2C", nullptr, bus, device, 100 * 1000)
+{
+	_external = external;
+}
+
+bool BMP388_I2C::is_external()
+{
+	return _external;
+}
+
+int BMP388_I2C::init()
+{
+	return I2C::init();
+}
+
+uint8_t BMP388_I2C::get_reg(uint8_t addr)
+{
+	uint8_t cmd[2] = { (uint8_t)(addr), 0};
+	transfer(&cmd[0], 1, &cmd[1], 1);
+
+	return cmd[1];
+}
+
+int BMP388_I2C::get_reg_buf(uint8_t addr, uint8_t *buf, uint8_t len)
+{
+	const uint8_t cmd = (uint8_t)(addr);
+	return transfer(&cmd, sizeof(cmd), buf, len);
+}
+
+int BMP388_I2C::set_reg(uint8_t value, uint8_t addr)
+{
+	uint8_t cmd[2] = { (uint8_t)(addr), value};
+	return transfer(cmd, sizeof(cmd), nullptr, 0);
+}
+
+data_s *BMP388_I2C::get_data(uint8_t addr)
+{
+	const uint8_t cmd = (uint8_t)(addr);
+
+	if (transfer(&cmd, sizeof(cmd), (uint8_t *)&_data, sizeof(struct data_s)) == OK) {
+		return (&_data);
+
+	} else {
+		return nullptr;
+	}
+}
+
+calibration_s *BMP388_I2C::get_calibration(uint8_t addr)
+{
+	const uint8_t cmd = (uint8_t)(addr);
+
+	if (transfer(&cmd, sizeof(cmd), (uint8_t *)&_cal, sizeof(struct calibration_s)) == OK) {
+		return &(_cal);
+
+	} else {
+		return nullptr;
+	}
+}
+
+#endif /* PX4_I2C_OBDEV_BMP388 || PX4_I2C_EXT_OBDEV_BMP388 */