L VD / LTC2601

Mbed library for LTC2601 / Mikroe DAC 2 Click peripheral.

Dependents:   LTC2601_test

LTC2601.h@0:11d039b90bde, 2020-08-25 (annotated)

Committer:
elelthvd
Date:
Tue Aug 25 14:26:48 2020 +0800
Revision:
0:11d039b90bde
Add LTC2601 library for Mbed OS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elelthvd 0:11d039b90bde 1
elelthvd 0:11d039b90bde 2 #ifndef _LTC2601_H
elelthvd 0:11d039b90bde 3 #define _LTC2601_H
elelthvd 0:11d039b90bde 4 #include "mbed.h"
elelthvd 0:11d039b90bde 5
elelthvd 0:11d039b90bde 6 class LTC2601 {
elelthvd 0:11d039b90bde 7 public:
elelthvd 0:11d039b90bde 8 /** Commands (Table 1):
elelthvd 0:11d039b90bde 9 * C3 C2 C1 C0
elelthvd 0:11d039b90bde 10 * 0 0 0 0 Write to Input Register
elelthvd 0:11d039b90bde 11 * 0 0 0 1 Update (Power Up) DAC Register
elelthvd 0:11d039b90bde 12 * 0 0 1 1 Write to and Update (Power Up)
elelthvd 0:11d039b90bde 13 * 0 1 0 0 Power Down (and ignores data word)
elelthvd 0:11d039b90bde 14 * 1 1 1 1 No Operation (ignores data word)
elelthvd 0:11d039b90bde 15 * The first three commands all seem to have the same effect (update and power up). Commands not shown seem ignored.
elelthvd 0:11d039b90bde 16 *
elelthvd 0:11d039b90bde 17 */
elelthvd 0:11d039b90bde 18 enum CommandName {
elelthvd 0:11d039b90bde 19 WRITE = (0b0000<<4),
elelthvd 0:11d039b90bde 20 UPDATE = (0b0001<<4),
elelthvd 0:11d039b90bde 21 WRITE_UPDATE = (0b0011<<4),
elelthvd 0:11d039b90bde 22 POWERDOWN = (0b0100<<4),
elelthvd 0:11d039b90bde 23 NOOPERATION = (0b1111<<4),
elelthvd 0:11d039b90bde 24 } ;
elelthvd 0:11d039b90bde 25 /* Constructor */
elelthvd 0:11d039b90bde 26 LTC2601 (SPI *spi, PinName cs, PinName rst);
elelthvd 0:11d039b90bde 27
elelthvd 0:11d039b90bde 28 /* Set DAC voltage 0...5.0V */
elelthvd 0:11d039b90bde 29 void updateVoltage(float voltage);
elelthvd 0:11d039b90bde 30 /* Set DAC voltage 0...0xFFFF */
elelthvd 0:11d039b90bde 31 void updateVoltage(uint16_t dac_value);
elelthvd 0:11d039b90bde 32 void powerDown();
elelthvd 0:11d039b90bde 33 /*
elelthvd 0:11d039b90bde 34 * DAC 2 Click only has no MOSI function
elelthvd 0:11d039b90bde 35 *
elelthvd 0:11d039b90bde 36 * Input First SPI write 16-bit:
elelthvd 0:11d039b90bde 37 * 8 bits of don't care
elelthvd 0:11d039b90bde 38 * 4 bits of command word (C3-C0)
elelthvd 0:11d039b90bde 39 * 4 bits if don't care
elelthvd 0:11d039b90bde 40 *
elelthvd 0:11d039b90bde 41 * Input Second SPI write 16-bit:
elelthvd 0:11d039b90bde 42 * 16 bits of data word (D15-D0)
elelthvd 0:11d039b90bde 43 * This data word encodes the desired DAC value between 0.0V and Vref.
elelthvd 0:11d039b90bde 44 * Vref on the Mikroe DAC2 Click equals 5.0V (jumper default).
elelthvd 0:11d039b90bde 45 *
elelthvd 0:11d039b90bde 46 */
elelthvd 0:11d039b90bde 47 void writeRegister(CommandName command, uint16_t data);
elelthvd 0:11d039b90bde 48 void hwReset();
elelthvd 0:11d039b90bde 49 protected:
elelthvd 0:11d039b90bde 50 private:
elelthvd 0:11d039b90bde 51 SPI *_spi;
elelthvd 0:11d039b90bde 52 DigitalOut _cs;
elelthvd 0:11d039b90bde 53 DigitalOut _rst;
elelthvd 0:11d039b90bde 54 };
elelthvd 0:11d039b90bde 55
elelthvd 0:11d039b90bde 56
elelthvd 0:11d039b90bde 57 #endif // _LTC2601_H