A mbed-os v5 driver for BM1422AGMV (3 axis magnetic sensor, made by Rohm).
Dependents: rohm-SensorShield-example mbed_blinky
Diff: BM1422AGMV.h
- Revision:
- 0:203311da9813
diff -r 000000000000 -r 203311da9813 BM1422AGMV.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BM1422AGMV.h Mon Feb 18 13:00:55 2019 +0900
@@ -0,0 +1,126 @@
+/* Copyright (c) 2017 Renesas Electronics., MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef _BM1422AGMV_H_
+#define _BM1422AGMV_H_
+
+#include "mbed.h"
+
+#define BM1422AGMV_DEVICE_ADDRESS_0E (0x0E << 1)
+#define BM1422AGMV_DEVICE_ADDRESS_0F (0x0F << 1)
+#define BM1422AGMV_WIA_VAL (0x41)
+
+#define BM1422AGMV_WIA (0x0F)
+#define BM1422AGMV_DATAX (0x10)
+#define BM1422AGMV_STA1 (0x18)
+#define BM1422AGMV_CNTL1 (0x1B)
+#define BM1422AGMV_CNTL2 (0x1C)
+#define BM1422AGMV_CNTL3 (0x1D)
+#define BM1422AGMV_AVE_A (0x40)
+#define BM1422AGMV_CNTL4 (0x5C)
+
+#define BM1422AGMV_STA1_RD_DRDY (1 << 6)
+
+#define BM1422AGMV_CNTL1_FS1 (1 << 1)
+#define BM1422AGMV_CNTL1_ODR_10Hz (0 << 3)
+#define BM1422AGMV_CNTL1_RST_LV (1 << 5)
+#define BM1422AGMV_CNTL1_OUT_BIT (1 << 6)
+#define BM1422AGMV_CNTL1_PC1 (1 << 7)
+
+#define BM1422AGMV_CNTL2_DRP (1 << 2)
+#define BM1422AGMV_CNTL2_DREN (1 << 3)
+
+#define BM1422AGMV_CNTL3_FORCE (1 << 6)
+
+#define BM1422AGMV_AVE_A_AVE4 (0 << 2)
+
+#define BM1422AGMV_CNTL1_VAL (BM1422AGMV_CNTL1_FS1 | BM1422AGMV_CNTL1_OUT_BIT | BM1422AGMV_CNTL1_PC1)
+#define BM1422AGMV_CNTL2_VAL (BM1422AGMV_CNTL2_DREN)
+#define BM1422AGMV_CNTL3_VAL (BM1422AGMV_CNTL3_FORCE)
+#define BM1422AGMV_CNTL4_VAL (0x0000)
+#define BM1422AGMV_AVE_A_VAL (BM1422AGMV_AVE_A_AVE4)
+
+#define BM1422AGMV_14BIT_SENS (24)
+#define BM1422AGMV_12BIT_SENS (6)
+
+//#define _DEBUG
+#ifdef _DEBUG
+#undef DEBUG_PRINT
+extern Serial pc;
+#define DEBUG_PRINT(...) pc.printf(__VA_ARGS__)
+#else
+#define DEBUG_PRINT(...)
+#endif
+
+class BM1422AGMV
+{
+public:
+ /**
+ * BM1422 constructor
+ *
+ * @param sda SDA pin
+ * @param sdl SCL pin
+ * @param addr slave address of the I2C peripheral (default: 0x1C)
+ */
+ BM1422AGMV(PinName sda, PinName scl, int addr = BM1422AGMV_DEVICE_ADDRESS_0E);
+ /**
+ * Create a BM1422 instance which is connected to specified I2C pins
+ * with specified address
+ *
+ * @param i2c_obj I2C object (instance)
+ * @param addr slave address of the I2C-bus peripheral (default: 0x1C)
+ */
+ BM1422AGMV(I2C &i2c_obj, int addr = BM1422AGMV_DEVICE_ADDRESS_0E);
+ /**
+ * BM1422 destructor
+ */
+ ~BM1422AGMV();
+ /** Initializa BM1422 sensor
+ *
+ * Configure sensor setting
+ *
+ */
+ void initialize(void);
+ /**
+ * Get XYZ axis acceleration
+ *
+ * @returns XYZ (filled in float[3]) axis acceleration
+ */
+ void get_val(float *data);
+
+private:
+ I2C m_i2c;
+ int m_addr;
+ void readRegs(int addr, uint8_t * data, int len);
+ void writeRegs(uint8_t * data, int len);
+ uint8_t _sens;
+ /**
+ * Get XYZ axis acceleration
+ *
+ * @returns XYZ (rawdata) axis acceleration
+ */
+ void get_rawval(unsigned char *data);
+ /**
+ * Convert XYZ axis acceleration
+ *
+ * @returns XYZ (float array [3]) axis acceleration
+ */
+ void convert_uT(int16_t *rawdata, float *data);
+};
+
+#endif