wimbeaumont Project / MCP4728

General usable MCP4728 quad DAC implementation only limited function has to be used together with the DevInterface lib

Dependents:   mbedSerialInterface_talkback2 MCP4728test mbedSerialInterface_sequencer

mcp4728.h@5:164362cf5836, 2016-07-06 (annotated)

Committer:
wbeaumont
Date:
Wed Jul 06 14:55:28 2016 +0000
Revision:
5:164362cf5836
Parent:
4:f45f4ff5a51a 
added methods to set output gain, ref source and power mode

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wbeaumont 0:7a0ebc527fb9 1 #ifndef MCP_4728_H
wbeaumont 0:7a0ebc527fb9 2 #define MCP_4728_H
wbeaumont 1:cd7c70a46739 3 #include "getVersion.h"
wbeaumont 0:7a0ebc527fb9 4
wbeaumont 0:7a0ebc527fb9 5 #include "stdbool.h"
wbeaumont 0:7a0ebc527fb9 6
wbeaumont 2:366e996af95c 7
wbeaumont 0:7a0ebc527fb9 8 #include "dev_interface_def.h"
wbeaumont 0:7a0ebc527fb9 9 #include "I2CInterface.h"
wbeaumont 0:7a0ebc527fb9 10 #include "DACInterface.h"
wbeaumont 0:7a0ebc527fb9 11
wbeaumont 5:164362cf5836 12 #define VERSION_MCP4728_HDR "0.50"
wbeaumont 0:7a0ebc527fb9 13
wbeaumont 0:7a0ebc527fb9 14 /** MCP4728 class.
wbeaumont 0:7a0ebc527fb9 15 * Used for interfacing with a mcp4728 12-Bit QUAD Digital-to-Analog Converter.
wbeaumont 1:cd7c70a46739 16 * For version 0.4X mode can not be set ( Intern ref, gain x2 power mode normal)
wbeaumont 2:366e996af95c 17 * It has to be used with the https://developer.mbed.org/users/wbeaumont/code/DevInterfaces/ package
wbeaumont 2:366e996af95c 18 * This includes the "virtual" I2CInterface class that is the interface to the I2C device
wbeaumont 2:366e996af95c 19 * An implementation of the I2Cinterface class for the MBED can be found at
wbeaumont 2:366e996af95c 20 *
wbeaumont 1:cd7c70a46739 21 * ( DACInterface inherits getVersion )
wbeaumont 5:164362cf5836 22 * ee-prom set / read not tested / implemented.
wbeaumont 5:164362cf5836 23 *
wbeaumont 5:164362cf5836 24 * V 0.50 added methods to set the modes ( gain, ch power mode , reference
wbeaumont 5:164362cf5836 25 *
wbeaumont 5:164362cf5836 26 * (C) Wim Beaumont Universiteit Antwerpen 2015 2016
wbeaumont 0:7a0ebc527fb9 27 *
wbeaumont 0:7a0ebc527fb9 28 */
wbeaumont 1:cd7c70a46739 29 class MCP4728 : public DACInterface {
wbeaumont 1:cd7c70a46739 30
wbeaumont 0:7a0ebc527fb9 31 public:
wbeaumont 0:7a0ebc527fb9 32 /** The device supports two types of power modes: normal and power-down. In normal mode the device
wbeaumont 0:7a0ebc527fb9 33 * operates a normal digital to analog conversion. In power-down mode all digitial to analog
wbeaumont 0:7a0ebc527fb9 34 * conversion is stopped, resulting in the device using less power (typically 60nA). Also, in power
wbeaumont 0:7a0ebc527fb9 35 * down mode Vout will be pulled to ground using either a 1k, 100k or 500k ohm internal resistors. */
wbeaumont 0:7a0ebc527fb9 36 enum PowerMode {
wbeaumont 0:7a0ebc527fb9 37 /** In normal mode the device operates a normal D2A conversion. */
wbeaumont 0:7a0ebc527fb9 38 Normal=0,
wbeaumont 0:7a0ebc527fb9 39 /** Enter the device into a power down mode, and pull Vout to ground using an internal 1k resistor. */
wbeaumont 0:7a0ebc527fb9 40 PowerDown1k=1,
wbeaumont 0:7a0ebc527fb9 41 /** Enter the device into a power down mode, and pull Vout to ground using an internal 100k resistor. */
wbeaumont 0:7a0ebc527fb9 42 PowerDown100k=2,
wbeaumont 0:7a0ebc527fb9 43 /** Enter the device into a power down mode, and pull Vout to ground using an internal 500k resistor. */
wbeaumont 0:7a0ebc527fb9 44 PowerDown500k=3
wbeaumont 0:7a0ebc527fb9 45 };
wbeaumont 2:366e996af95c 46 /** Voltage reference can be either External, this means the Vdd or internal , 2.048 V
wbeaumont 2:366e996af95c 47 The output goes from 0 to Vref ( either 2.048 V or Vdd ),
wbeaumont 2:366e996af95c 48 */
wbeaumont 0:7a0ebc527fb9 49 enum VrefMode {
wbeaumont 0:7a0ebc527fb9 50 ExternRef=0, // == VDD
wbeaumont 1:cd7c70a46739 51 InternRef=1
wbeaumont 0:7a0ebc527fb9 52 };
wbeaumont 2:366e996af95c 53 /** In case the internal reference is used the output can be multiplied by a factor 2.
wbeaumont 2:366e996af95c 54 in that case the output goes between 0 and 4.096 V
wbeaumont 2:366e996af95c 55 */
wbeaumont 0:7a0ebc527fb9 56 enum GainMode {
wbeaumont 0:7a0ebc527fb9 57 GainX1=0,
wbeaumont 0:7a0ebc527fb9 58 GainX2=1
wbeaumont 0:7a0ebc527fb9 59 };
wbeaumont 0:7a0ebc527fb9 60
wbeaumont 1:cd7c70a46739 61
wbeaumont 1:cd7c70a46739 62
wbeaumont 0:7a0ebc527fb9 63
wbeaumont 0:7a0ebc527fb9 64
wbeaumont 0:7a0ebc527fb9 65 /** The device supports 3 different I2C bus frequencies.*/
wbeaumont 0:7a0ebc527fb9 66 enum BusFrequency {
wbeaumont 0:7a0ebc527fb9 67 /** Standard 100kHz bus. */
wbeaumont 0:7a0ebc527fb9 68 Standard100kHz,
wbeaumont 0:7a0ebc527fb9 69 /** Fast 400kHz bus. */
wbeaumont 0:7a0ebc527fb9 70 Fast400kHz,
wbeaumont 0:7a0ebc527fb9 71 /** High Speed 3.4Mhz bus. WARNING: the test suite fails for the mbed LPC1768 when this frequency is selected - not tested on other platforms.*/
wbeaumont 0:7a0ebc527fb9 72 HighSpeed3_4Mhz
wbeaumont 0:7a0ebc527fb9 73 };
wbeaumont 2:366e996af95c 74 /** structure used to set the channel configuration */
wbeaumont 2:366e996af95c 75 typedef struct MCP4728ChCfg{
wbeaumont 2:366e996af95c 76 GainMode gain;
wbeaumont 2:366e996af95c 77 VrefMode vref;
wbeaumont 2:366e996af95c 78 PowerMode pwr;
wbeaumont 2:366e996af95c 79 } MCP4728ChCfgdummy;
wbeaumont 2:366e996af95c 80
wbeaumont 0:7a0ebc527fb9 81
wbeaumont 0:7a0ebc527fb9 82 /** Create an mcp4725 I2C interface
wbeaumont 0:7a0ebc527fb9 83 *
wbeaumont 1:cd7c70a46739 84 * @param i2cinterface pointer to the I2C interface (proto type)
wbeaumont 0:7a0ebc527fb9 85 * @param device_address_bits The 3bit address bits of the device.
wbeaumont 3:2a2eafba8a1d 86 * @param Vdd the voltage on the Vdd pin ( power) is used to calculate voltage is Vref is set to external
wbeaumont 0:7a0ebc527fb9 87 */
wbeaumont 1:cd7c70a46739 88 MCP4728(I2CInterface* i2cinterface, int device_address_bits, float Vdd );
wbeaumont 0:7a0ebc527fb9 89
wbeaumont 1:cd7c70a46739 90
wbeaumont 1:cd7c70a46739 91 /** Read the contents of the dac registers,( also eeprom settings) , and if an eeprom write is currently active.
wbeaumont 1:cd7c70a46739 92 * result of the reading is stored in the channelstatus structure .
wbeaumont 4:f45f4ff5a51a 93 * @param checkall check if the channel nr and adress is returned correctly in 04x this is not tested /checked so set to false .
wbeaumont 4:f45f4ff5a51a 94 * @returns 0 on success non-0 on failure
wbeaumont 0:7a0ebc527fb9 95 */
wbeaumont 3:2a2eafba8a1d 96 int update(bool checkall);
wbeaumont 4:f45f4ff5a51a 97
wbeaumont 4:f45f4ff5a51a 98 /** Read the contents of the dac registers,( also eeprom settings) , and if an eeprom write is currently active.
wbeaumont 4:f45f4ff5a51a 99 * result of the reading is stored in the channelstatus structure .
wbeaumont 4:f45f4ff5a51a 100 * implementation of the update from the DACInterface
wbeaumont 4:f45f4ff5a51a 101 * @returns 0 on success non-0 on failure
wbeaumont 4:f45f4ff5a51a 102 */
wbeaumont 3:2a2eafba8a1d 103
wbeaumont 1:cd7c70a46739 104 virtual int update() { return update(false);}
wbeaumont 3:2a2eafba8a1d 105
wbeaumont 3:2a2eafba8a1d 106
wbeaumont 1:cd7c70a46739 107 /** format a string with the channel status
wbeaumont 1:cd7c70a46739 108 * @param ch : the channel nr
wbeaumont 3:2a2eafba8a1d 109 * @param updatereq: if true the function update(true) is called else the class status table is used .
wbeaumont 3:2a2eafba8a1d 110 * @param eprom: if true the values in the eprom are used else the values of the DAC channel
wbeaumont 4:f45f4ff5a51a 111 * @param str a pointer to an array of char by example chanstatstr[200] 200 is minuimum.
wbeaumont 1:cd7c70a46739 112 * @param dimension of the str array ( so sizeoff(chanstatstr)
wbeaumont 4:f45f4ff5a51a 113 * @return the number of chars in the string or negative in case of an error
wbeaumont 1:cd7c70a46739 114 */
wbeaumont 1:cd7c70a46739 115 int StatusString(int ch,bool updatereq ,bool eprom, char *str , int length);
wbeaumont 0:7a0ebc527fb9 116
wbeaumont 3:2a2eafba8a1d 117 /**gives the last value of the DAC register obtained by the last update command.
wbeaumont 3:2a2eafba8a1d 118 Implementation of the getDACvalue of the DACInterface
wbeaumont 3:2a2eafba8a1d 119 @param value by reference , the DAC value for the channel
wbeaumont 3:2a2eafba8a1d 120 @param ch the channel nr 0..3
wbeaumont 3:2a2eafba8a1d 121 @return the I2C result of the last update command
wbeaumont 3:2a2eafba8a1d 122 */
wbeaumont 1:cd7c70a46739 123 virtual int getDACvalue(int &value, int ch=0);
wbeaumont 3:2a2eafba8a1d 124 /** gives the last value of the DAC output voltage obtained by the last update command.
wbeaumont 3:2a2eafba8a1d 125 Use the channel status bits and eventual Vdd value to convert the DAC value to a voltage.
wbeaumont 3:2a2eafba8a1d 126 Implementation of the getVoltagevalue of the DACInterface
wbeaumont 3:2a2eafba8a1d 127 @param voltage by reference , the DAC output voltage for the channel
wbeaumont 3:2a2eafba8a1d 128 @param ch the channel nr 0..3
wbeaumont 3:2a2eafba8a1d 129 @return the I2C result of the last update command
wbeaumont 3:2a2eafba8a1d 130 */
wbeaumont 1:cd7c70a46739 131 virtual int getVoltage(float &voltage, int ch=0);
wbeaumont 0:7a0ebc527fb9 132
wbeaumont 3:2a2eafba8a1d 133 /** set the dac value for a certain channel.
wbeaumont 3:2a2eafba8a1d 134 Implementation of the setDACvalue of the DACInterface
wbeaumont 3:2a2eafba8a1d 135 It also sets the DAC configuration bits ( Vref, power mode , gain )
wbeaumont 3:2a2eafba8a1d 136 ( For version 0.4x this is internal, normal power , gain x2 )
wbeaumont 3:2a2eafba8a1d 137 @param value the DAC value to be set
wbeaumont 3:2a2eafba8a1d 138 @param ch the channel nr 0..3
wbeaumont 4:f45f4ff5a51a 139 @return the I2C result when trying to set the DAC value
wbeaumont 3:2a2eafba8a1d 140 */
wbeaumont 0:7a0ebc527fb9 141 virtual int setDACvalue( int value, int ch=0);
wbeaumont 3:2a2eafba8a1d 142
wbeaumont 3:2a2eafba8a1d 143
wbeaumont 3:2a2eafba8a1d 144 /** gives the last value of the DAC output voltage obtained by the last update command.
wbeaumont 3:2a2eafba8a1d 145 Use the channel configuration setings and eventual Vdd value to convert the voltage to a DAC value.
wbeaumont 3:2a2eafba8a1d 146 Then it calls setDACValue so it sets also the channel configuration.
wbeaumont 3:2a2eafba8a1d 147 Implementation of the setVoltagevalue of the DACInterface
wbeaumont 3:2a2eafba8a1d 148 @param voltage by reference , the request DAC output voltage for the channel
wbeaumont 3:2a2eafba8a1d 149 @param ch the channel nr 0..3
wbeaumont 4:f45f4ff5a51a 150 @return the I2C result when trying to set the DAC value
wbeaumont 3:2a2eafba8a1d 151 */
wbeaumont 3:2a2eafba8a1d 152
wbeaumont 1:cd7c70a46739 153 virtual int setVoltage (float voltage, int ch=0);
wbeaumont 2:366e996af95c 154
wbeaumont 5:164362cf5836 155 /** prepare power mode to 1k for all channels , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 156 */
wbeaumont 5:164362cf5836 157 void setPowerMode1k(){ for ( int ch=0;ch<4;ch++) ChCfg[ch].pwr=PowerDown1k;}
wbeaumont 2:366e996af95c 158
wbeaumont 5:164362cf5836 159 /** prepare power mode to 1k for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 160 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 161 */
wbeaumont 5:164362cf5836 162 void setPowerMode1k(int ch ){ ChCfg[ch].pwr=PowerDown1k;}
wbeaumont 5:164362cf5836 163
wbeaumont 5:164362cf5836 164 /** prepare power mode to 100k for all channels , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 165 */
wbeaumont 5:164362cf5836 166 void setPowerMode100k(){ for ( int ch=0;ch<4;ch++) ChCfg[ch].pwr=PowerDown100k;}
wbeaumont 5:164362cf5836 167
wbeaumont 5:164362cf5836 168 /** prepare power mode to 100k for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 169 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 170 */
wbeaumont 5:164362cf5836 171 void setPowerMode100k(int ch ){ ChCfg[ch].pwr=PowerDown100k;}
wbeaumont 5:164362cf5836 172
wbeaumont 5:164362cf5836 173 /** prepare power mode to 500k for all channels , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 174 */
wbeaumont 5:164362cf5836 175 void setPowerMode500k(){ for ( int ch=0;ch<4;ch++) ChCfg[ch].pwr=PowerDown500k;}
wbeaumont 5:164362cf5836 176
wbeaumont 5:164362cf5836 177 /** prepare power mode to 500k for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 178 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 179 */
wbeaumont 5:164362cf5836 180 void setPowerMode500k(int ch ){ ChCfg[ch].pwr=PowerDown500k;}
wbeaumont 5:164362cf5836 181
wbeaumont 5:164362cf5836 182 /** prepare power mode to normal (active) for all channels , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 183 */
wbeaumont 5:164362cf5836 184 void setPowerModeNormal(){ for ( int ch=0;ch<4;ch++) ChCfg[ch].pwr=Normal;}
wbeaumont 5:164362cf5836 185
wbeaumont 5:164362cf5836 186 /** prepare power mode to normal (active) for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 187 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 188 */
wbeaumont 5:164362cf5836 189 void setPowerModeNormal(int ch ){ ChCfg[ch].pwr=Normal;}
wbeaumont 5:164362cf5836 190
wbeaumont 5:164362cf5836 191 /** prepare to intern reference for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 192 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 193 */
wbeaumont 5:164362cf5836 194 void setRefIntern ( ) { for ( int ch=0;ch<4;ch++) ChCfg[ch].vref=InternRef;}
wbeaumont 5:164362cf5836 195
wbeaumont 5:164362cf5836 196 /** prepare to intern reference for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 197 @param the channel the reference has to be set for.
wbeaumont 5:164362cf5836 198 */
wbeaumont 5:164362cf5836 199 void setRefIntern (int ch ) { ChCfg[ch].vref=InternRef;}
wbeaumont 5:164362cf5836 200
wbeaumont 5:164362cf5836 201 /** prepare to extern reference for a channel , mode becomes active with the next set voltage for the channel
wbeaumont 5:164362cf5836 202 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 203 */
wbeaumont 5:164362cf5836 204 void setRefExtern ( ) { for ( int ch=0;ch<4;ch++) ChCfg[ch].vref=ExternRef;}
wbeaumont 5:164362cf5836 205
wbeaumont 5:164362cf5836 206 /** prepare to intern reference for a channel.
wbeaumont 5:164362cf5836 207 mode becomes active with the next set voltage for the channel!!
wbeaumont 5:164362cf5836 208 @param the channel the reference has to be set for.
wbeaumont 5:164362cf5836 209 */
wbeaumont 5:164362cf5836 210 void setRefExtern (int ch ) { ChCfg[ch].vref=ExternRef;}
wbeaumont 5:164362cf5836 211
wbeaumont 5:164362cf5836 212 /** prepare to set the output gain to 2 for all channel
wbeaumont 5:164362cf5836 213 mode becomes active with the next set voltage for the channel!!
wbeaumont 5:164362cf5836 214 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 215 */
wbeaumont 5:164362cf5836 216 void setGainX2 () {for ( int ch=0;ch<4;ch++) ChCfg[ch].gain=GainX2;}
wbeaumont 5:164362cf5836 217
wbeaumont 5:164362cf5836 218 /** prepare to set the output gain to 2 for a channel
wbeaumont 5:164362cf5836 219 mode becomes active with the next set voltage for the channel!!
wbeaumont 5:164362cf5836 220 @param the channel the reference has to be set for.
wbeaumont 5:164362cf5836 221 */
wbeaumont 5:164362cf5836 222 void setGainX2 (int ch) { ChCfg[ch].gain=GainX2;}
wbeaumont 5:164362cf5836 223
wbeaumont 5:164362cf5836 224 /** prepare to set the output gain to 1 for all channel
wbeaumont 5:164362cf5836 225 mode becomes active with the next set voltage for the channel!!
wbeaumont 5:164362cf5836 226 @param the channel the power mode has to be set for.
wbeaumont 5:164362cf5836 227 */
wbeaumont 5:164362cf5836 228 void setGainX1 () {for ( int ch=0;ch<4;ch++) ChCfg[ch].gain=GainX1;}
wbeaumont 5:164362cf5836 229
wbeaumont 5:164362cf5836 230 /** prepare to set the output gain to 1 for a channel
wbeaumont 5:164362cf5836 231 mode becomes active with the next set voltage for the channel!!
wbeaumont 5:164362cf5836 232 @param the channel the reference has to be set for.
wbeaumont 5:164362cf5836 233 */
wbeaumont 5:164362cf5836 234 void setGainX1 (int ch) { ChCfg[ch].gain=GainX1;}
wbeaumont 5:164362cf5836 235
wbeaumont 2:366e996af95c 236
wbeaumont 0:7a0ebc527fb9 237 protected:
wbeaumont 1:cd7c70a46739 238 /** pointer to the I2C interface driver. */
wbeaumont 0:7a0ebc527fb9 239 I2CInterface* _i2c_interface;
wbeaumont 0:7a0ebc527fb9 240 /** The full i2c device address. */
wbeaumont 0:7a0ebc527fb9 241 int _device_address;
wbeaumont 1:cd7c70a46739 242 char _adrbytes;
wbeaumont 3:2a2eafba8a1d 243 /** calculates the voltage based on the value and the channel configuration bits
wbeaumont 3:2a2eafba8a1d 244 @param value : the value of the DAC register
wbeaumont 3:2a2eafba8a1d 245 @param gain : the gain setting x1 or x2
wbeaumont 3:2a2eafba8a1d 246 @param vref : use internal or external reference
wbeaumont 3:2a2eafba8a1d 247 @return : the voltage based on the parameters
wbeaumont 3:2a2eafba8a1d 248 */
wbeaumont 1:cd7c70a46739 249 float dig2volt( short int value,GainMode gain, VrefMode vref);
wbeaumont 3:2a2eafba8a1d 250
wbeaumont 3:2a2eafba8a1d 251 /** calculates the nearest DAC register setting to get the requested voltage output
wbeaumont 3:2a2eafba8a1d 252 given the DAC configuration. There is no "under/ overflow" check
wbeaumont 3:2a2eafba8a1d 253 @param voltage the requested voltage
wbeaumont 3:2a2eafba8a1d 254 @param gain : the gain setting x1 or x2
wbeaumont 4:f45f4ff5a51a 255 @param vref : use internal or external reference
wbeaumont 3:2a2eafba8a1d 256 @return : the DAC value based the parameters to get the requested output voltage
wbeaumont 3:2a2eafba8a1d 257 */
wbeaumont 1:cd7c70a46739 258 short int volt2dig( float voltage,GainMode gain, VrefMode vref);
wbeaumont 3:2a2eafba8a1d 259
wbeaumont 3:2a2eafba8a1d 260 /** holds the Vdd value , used to calculate the voltage in case of vref = external */
wbeaumont 1:cd7c70a46739 261 float Vdd;
wbeaumont 3:2a2eafba8a1d 262 /** holds the status of the last update request */
wbeaumont 3:2a2eafba8a1d 263 int lastupdateresult;
wbeaumont 0:7a0ebc527fb9 264
wbeaumont 3:2a2eafba8a1d 265 /** array for reading the status will be removed after debugging so don't use for future development */
wbeaumont 3:2a2eafba8a1d 266 char rbdata[24] ;
wbeaumont 2:366e996af95c 267
wbeaumont 3:2a2eafba8a1d 268 /** used setting the configuration bits for each channel
wbeaumont 3:2a2eafba8a1d 269 These values are the "requested" values so not the actual values.
wbeaumont 3:2a2eafba8a1d 270 These values are not updated after a update request !!
wbeaumont 3:2a2eafba8a1d 271 */
wbeaumont 2:366e996af95c 272 MCP4728ChCfg ChCfg[4];
wbeaumont 3:2a2eafba8a1d 273 /** structure to store all channel status / config bits */
wbeaumont 2:366e996af95c 274 typedef struct MCP4728ChStatus{
wbeaumont 2:366e996af95c 275 GainMode gain;
wbeaumont 2:366e996af95c 276 VrefMode vref;
wbeaumont 2:366e996af95c 277 PowerMode pwr;
wbeaumont 3:2a2eafba8a1d 278 bool busy;
wbeaumont 2:366e996af95c 279 bool por;
wbeaumont 2:366e996af95c 280 short int dacvalue;
wbeaumont 2:366e996af95c 281 short int promvalue;
wbeaumont 2:366e996af95c 282 GainMode promgain;
wbeaumont 2:366e996af95c 283 VrefMode promvref;
wbeaumont 2:366e996af95c 284 PowerMode prompwr;
wbeaumont 2:366e996af95c 285
wbeaumont 2:366e996af95c 286 } MCP4728Chstatus;
wbeaumont 2:366e996af95c 287
wbeaumont 3:2a2eafba8a1d 288 /** storage of the channel status and configuration bits */
wbeaumont 3:2a2eafba8a1d 289 MCP4728ChStatus chstat[4];
wbeaumont 2:366e996af95c 290
wbeaumont 2:366e996af95c 291
wbeaumont 0:7a0ebc527fb9 292 };
wbeaumont 0:7a0ebc527fb9 293
wbeaumont 0:7a0ebc527fb9 294 #endif