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libraries/ad5270/AD5270.h@1:c1f0670bb370, 2016-03-30 (annotated)

Committer:
Suciu
Date:
Wed Mar 30 17:35:04 2016 +0300
Revision:
1:c1f0670bb370
Child:
3:1a8c14043a4e
Added CN0357-example project and related drivers

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Suciu 1:c1f0670bb370 1 /**
Suciu 1:c1f0670bb370 2 * @file AD5270.h
Suciu 1:c1f0670bb370 3 * @brief Header file for AD5270 rheostat
Suciu 1:c1f0670bb370 4 * @version V0.1
Suciu 1:c1f0670bb370 5 * @author ADI
Suciu 1:c1f0670bb370 6 * @date March 2015
Suciu 1:c1f0670bb370 7 **/
Suciu 1:c1f0670bb370 8
Suciu 1:c1f0670bb370 9 #ifndef AD5270_H
Suciu 1:c1f0670bb370 10 #define AD5270_H
Suciu 1:c1f0670bb370 11
Suciu 1:c1f0670bb370 12 #include "mbed.h"
Suciu 1:c1f0670bb370 13
Suciu 1:c1f0670bb370 14 /**
Suciu 1:c1f0670bb370 15 * @brief Analog Devices AD5270 SPI Digital Rheostat class
Suciu 1:c1f0670bb370 16 */
Suciu 1:c1f0670bb370 17 class AD5270
Suciu 1:c1f0670bb370 18 {
Suciu 1:c1f0670bb370 19 public:
Suciu 1:c1f0670bb370 20
Suciu 1:c1f0670bb370 21 /// AD5270 commands
Suciu 1:c1f0670bb370 22 typedef enum {
Suciu 1:c1f0670bb370 23 NO_OP = 0x00, ///< No data
Suciu 1:c1f0670bb370 24 NO_OP_cmd = 0x0000, ///< 16 bit no data
Suciu 1:c1f0670bb370 25 WRITE_RDAC = 0x04, ///< Write to the RDAC Register
Suciu 1:c1f0670bb370 26 READ_RDAC = 0x08, ///< Read from the RDAC Register
Suciu 1:c1f0670bb370 27 STORE_50TP = 0x0C, ///< Write to the RDAC to memory
Suciu 1:c1f0670bb370 28 SW_RST = 0x10, ///< Software reset to last memory location
Suciu 1:c1f0670bb370 29 READ_50TP_CONTENTS = 0x14, ///< Read the last memory contents
Suciu 1:c1f0670bb370 30 READ_50TP_ADDRESS = 0x18, ///< Read the last memory address
Suciu 1:c1f0670bb370 31 WRITE_CTRL_REG = 0x1C, ///< Write to the control Register
Suciu 1:c1f0670bb370 32 READ_CTRL_REG = 0x20, ///< Read from the control Register
Suciu 1:c1f0670bb370 33 SW_SHUTDOWN = 0x24, ///< Software shutdown (0) - Normal, (1) - Shutdown
Suciu 1:c1f0670bb370 34 HI_Zupper = 0x80, ///< Get the SDO line ready for High Z
Suciu 1:c1f0670bb370 35 HI_Zlower = 0x01, ///< Puts AD5270 into High Z mode
Suciu 1:c1f0670bb370 36 HI_Z_Cmd = 0x8001 ///< Puts AD5270 into High Z mode*/
Suciu 1:c1f0670bb370 37 } AD5270Commands_t;
Suciu 1:c1f0670bb370 38
Suciu 1:c1f0670bb370 39 AD5270(PinName CS=SPI_CS, float max_resistance = 20000.0, PinName MOSI=SPI_MOSI,PinName MISO=SPI_MISO,PinName SCK=SPI_SCK);
Suciu 1:c1f0670bb370 40 void set_SDO_HiZ(void);
Suciu 1:c1f0670bb370 41 void frequency(int hz);
Suciu 1:c1f0670bb370 42 uint16_t calc_RDAC(float resistance);
Suciu 1:c1f0670bb370 43 uint16_t write_cmd(uint8_t command, uint16_t data = 0x00);
Suciu 1:c1f0670bb370 44 uint16_t write_reg(uint16_t data);
Suciu 1:c1f0670bb370 45 float get_max_resistance(void);
Suciu 1:c1f0670bb370 46
Suciu 1:c1f0670bb370 47 SPI ad5270; ///< SPI instance of the AD5270
Suciu 1:c1f0670bb370 48 DigitalOut cs; ///< DigitalOut instance for the chipselect of the AD5270
Suciu 1:c1f0670bb370 49
Suciu 1:c1f0670bb370 50 private:
Suciu 1:c1f0670bb370 51 const static int _RESET = 0xff;
Suciu 1:c1f0670bb370 52 const static int _DUMMY_BYTE = 0xAA;
Suciu 1:c1f0670bb370 53 float _max_resistance;
Suciu 1:c1f0670bb370 54 };
Suciu 1:c1f0670bb370 55
Suciu 1:c1f0670bb370 56 #endif