A collection of Analog Devices drivers for the mbed platform
For additional information check out the mbed page of the Analog Devices wiki: https://wiki.analog.com/resources/tools-software/mbed-drivers-all
libraries/AD5270/AD5270.cpp@24:dae7123d432a, 2016-05-18 (annotated)
- Committer:
- Adrian Suciu
- Date:
- Wed May 18 16:57:57 2016 +0300
- Revision:
- 24:dae7123d432a
- Child:
- 28:e24b911ddd7c
Improved compatibility with Linux systems
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Adrian Suciu |
24:dae7123d432a | 1 | /** |
Adrian Suciu |
24:dae7123d432a | 2 | * @file AD5270.cpp |
Adrian Suciu |
24:dae7123d432a | 3 | * @brief Source file for AD5270 rheostat |
Adrian Suciu |
24:dae7123d432a | 4 | * @author Analog Devices Inc. |
Adrian Suciu |
24:dae7123d432a | 5 | * |
Adrian Suciu |
24:dae7123d432a | 6 | * For support please go to: |
Adrian Suciu |
24:dae7123d432a | 7 | * Github: https://github.com/analogdevicesinc/mbed-adi |
Adrian Suciu |
24:dae7123d432a | 8 | * Support: https://ez.analog.com/community/linux-device-drivers/microcontroller-no-os-drivers |
Adrian Suciu |
24:dae7123d432a | 9 | * Product: http://www.analog.com/ad5270 |
Adrian Suciu |
24:dae7123d432a | 10 | * More: https://wiki.analog.com/resources/tools-software/mbed-drivers-all |
Adrian Suciu |
24:dae7123d432a | 11 | |
Adrian Suciu |
24:dae7123d432a | 12 | ******************************************************************************** |
Adrian Suciu |
24:dae7123d432a | 13 | * Copyright 2016(c) Analog Devices, Inc. |
Adrian Suciu |
24:dae7123d432a | 14 | * |
Adrian Suciu |
24:dae7123d432a | 15 | * All rights reserved. |
Adrian Suciu |
24:dae7123d432a | 16 | * |
Adrian Suciu |
24:dae7123d432a | 17 | * Redistribution and use in source and binary forms, with or without |
Adrian Suciu |
24:dae7123d432a | 18 | * modification, are permitted provided that the following conditions are met: |
Adrian Suciu |
24:dae7123d432a | 19 | * - Redistributions of source code must retain the above copyright |
Adrian Suciu |
24:dae7123d432a | 20 | * notice, this list of conditions and the following disclaimer. |
Adrian Suciu |
24:dae7123d432a | 21 | * - Redistributions in binary form must reproduce the above copyright |
Adrian Suciu |
24:dae7123d432a | 22 | * notice, this list of conditions and the following disclaimer in |
Adrian Suciu |
24:dae7123d432a | 23 | * the documentation and/or other materials provided with the |
Adrian Suciu |
24:dae7123d432a | 24 | * distribution. |
Adrian Suciu |
24:dae7123d432a | 25 | * - Neither the name of Analog Devices, Inc. nor the names of its |
Adrian Suciu |
24:dae7123d432a | 26 | * contributors may be used to endorse or promote products derived |
Adrian Suciu |
24:dae7123d432a | 27 | * from this software without specific prior written permission. |
Adrian Suciu |
24:dae7123d432a | 28 | * - The use of this software may or may not infringe the patent rights |
Adrian Suciu |
24:dae7123d432a | 29 | * of one or more patent holders. This license does not release you |
Adrian Suciu |
24:dae7123d432a | 30 | * from the requirement that you obtain separate licenses from these |
Adrian Suciu |
24:dae7123d432a | 31 | * patent holders to use this software. |
Adrian Suciu |
24:dae7123d432a | 32 | * - Use of the software either in source or binary form, must be run |
Adrian Suciu |
24:dae7123d432a | 33 | * on or directly connected to an Analog Devices Inc. component. |
Adrian Suciu |
24:dae7123d432a | 34 | * |
Adrian Suciu |
24:dae7123d432a | 35 | * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR |
Adrian Suciu |
24:dae7123d432a | 36 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, |
Adrian Suciu |
24:dae7123d432a | 37 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
Adrian Suciu |
24:dae7123d432a | 38 | * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, |
Adrian Suciu |
24:dae7123d432a | 39 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
Adrian Suciu |
24:dae7123d432a | 40 | * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR |
Adrian Suciu |
24:dae7123d432a | 41 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
Adrian Suciu |
24:dae7123d432a | 42 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
Adrian Suciu |
24:dae7123d432a | 43 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
Adrian Suciu |
24:dae7123d432a | 44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Adrian Suciu |
24:dae7123d432a | 45 | * |
Adrian Suciu |
24:dae7123d432a | 46 | ********************************************************************************/ |
Adrian Suciu |
24:dae7123d432a | 47 | |
Adrian Suciu |
24:dae7123d432a | 48 | |
Adrian Suciu |
24:dae7123d432a | 49 | #include "mbed.h" |
Adrian Suciu |
24:dae7123d432a | 50 | #include "AD5270.h" |
Adrian Suciu |
24:dae7123d432a | 51 | |
Adrian Suciu |
24:dae7123d432a | 52 | /** |
Adrian Suciu |
24:dae7123d432a | 53 | * @brief AD5270 constructor, sets CS pin and SPI format |
Adrian Suciu |
24:dae7123d432a | 54 | * @param CS - (optional)chip select of the AD5270 |
Adrian Suciu |
24:dae7123d432a | 55 | * @param max_resistance - (optional) nominal resistance of the AD5270 chip in ohms |
Adrian Suciu |
24:dae7123d432a | 56 | * @param MOSI - (optional)pin of the SPI interface |
Adrian Suciu |
24:dae7123d432a | 57 | * @param MISO - (optional)pin of the SPI interface |
Adrian Suciu |
24:dae7123d432a | 58 | * @param SCK - (optional)pin of the SPI interface |
Adrian Suciu |
24:dae7123d432a | 59 | */ |
Adrian Suciu |
24:dae7123d432a | 60 | AD5270::AD5270(PinName CS, float max_resistance, PinName MOSI, PinName MISO, PinName SCK): |
Adrian Suciu |
24:dae7123d432a | 61 | ad5270(MOSI, MISO, SCK), cs(CS), _max_resistance(max_resistance) |
Adrian Suciu |
24:dae7123d432a | 62 | { |
Adrian Suciu |
24:dae7123d432a | 63 | cs = true; |
Adrian Suciu |
24:dae7123d432a | 64 | ad5270.format(8, _SPI_MODE); |
Adrian Suciu |
24:dae7123d432a | 65 | } |
Adrian Suciu |
24:dae7123d432a | 66 | |
Adrian Suciu |
24:dae7123d432a | 67 | /** |
Adrian Suciu |
24:dae7123d432a | 68 | * @brief Compute for the nearest RDAC value from given resistance |
Adrian Suciu |
24:dae7123d432a | 69 | * @param resistance - resistor |
Adrian Suciu |
24:dae7123d432a | 70 | * @return RDAC value - closest possible to given resistance |
Adrian Suciu |
24:dae7123d432a | 71 | */ |
Adrian Suciu |
24:dae7123d432a | 72 | uint16_t AD5270::calc_RDAC(float resistance) |
Adrian Suciu |
24:dae7123d432a | 73 | { |
Adrian Suciu |
24:dae7123d432a | 74 | return static_cast<uint16_t>( (resistance / _max_resistance) * 1024.0 ); |
Adrian Suciu |
24:dae7123d432a | 75 | } |
Adrian Suciu |
24:dae7123d432a | 76 | |
Adrian Suciu |
24:dae7123d432a | 77 | /** |
Adrian Suciu |
24:dae7123d432a | 78 | * @brief sets a new value for the RDAC |
Adrian Suciu |
24:dae7123d432a | 79 | * @param resistance new value for the resistance |
Adrian Suciu |
24:dae7123d432a | 80 | * @return actual value of the resistance in the RDAC |
Adrian Suciu |
24:dae7123d432a | 81 | */ |
Adrian Suciu |
24:dae7123d432a | 82 | float AD5270::write_RDAC(float resistance) |
Adrian Suciu |
24:dae7123d432a | 83 | { |
Adrian Suciu |
24:dae7123d432a | 84 | // Compute for the RDAC code nearest to the required feedback resistance |
Adrian Suciu |
24:dae7123d432a | 85 | uint16_t RDAC_val = calc_RDAC(resistance); |
Adrian Suciu |
24:dae7123d432a | 86 | float RDAC_Value = ((static_cast<float> (RDAC_val) * _max_resistance) / 1024.0); // inverse operation to get actual resistance in the RDAC |
Adrian Suciu |
24:dae7123d432a | 87 | write_wiper_reg(RDAC_val); |
Adrian Suciu |
24:dae7123d432a | 88 | return RDAC_Value; |
Adrian Suciu |
24:dae7123d432a | 89 | } |
Adrian Suciu |
24:dae7123d432a | 90 | |
Adrian Suciu |
24:dae7123d432a | 91 | /** |
Adrian Suciu |
24:dae7123d432a | 92 | * Reads the RDAC register |
Adrian Suciu |
24:dae7123d432a | 93 | * @return RDAC resistor value |
Adrian Suciu |
24:dae7123d432a | 94 | */ |
Adrian Suciu |
24:dae7123d432a | 95 | float AD5270::read_RDAC() |
Adrian Suciu |
24:dae7123d432a | 96 | { |
Adrian Suciu |
24:dae7123d432a | 97 | uint16_t RDAC_val = read_wiper_reg(); |
Adrian Suciu |
24:dae7123d432a | 98 | return ((static_cast<float> (RDAC_val) * _max_resistance) / 1024.0); |
Adrian Suciu |
24:dae7123d432a | 99 | } |
Adrian Suciu |
24:dae7123d432a | 100 | |
Adrian Suciu |
24:dae7123d432a | 101 | /** |
Adrian Suciu |
24:dae7123d432a | 102 | * @brief Puts the AD5270 SDO line in to Hi-Z mode |
Adrian Suciu |
24:dae7123d432a | 103 | * @return none |
Adrian Suciu |
24:dae7123d432a | 104 | */ |
Adrian Suciu |
24:dae7123d432a | 105 | void AD5270::set_SDO_HiZ(void) |
Adrian Suciu |
24:dae7123d432a | 106 | { |
Adrian Suciu |
24:dae7123d432a | 107 | write_reg(HI_Z_Cmd); |
Adrian Suciu |
24:dae7123d432a | 108 | wait_us(2); |
Adrian Suciu |
24:dae7123d432a | 109 | write_reg(NO_OP_cmd); |
Adrian Suciu |
24:dae7123d432a | 110 | } |
Adrian Suciu |
24:dae7123d432a | 111 | |
Adrian Suciu |
24:dae7123d432a | 112 | /** |
Adrian Suciu |
24:dae7123d432a | 113 | * @brief Set AD5270 SPI frequency |
Adrian Suciu |
24:dae7123d432a | 114 | * @param hz - SPI bus frequency in hz |
Adrian Suciu |
24:dae7123d432a | 115 | * @return none |
Adrian Suciu |
24:dae7123d432a | 116 | */ |
Adrian Suciu |
24:dae7123d432a | 117 | void AD5270::frequency(int hz) |
Adrian Suciu |
24:dae7123d432a | 118 | { |
Adrian Suciu |
24:dae7123d432a | 119 | ad5270.frequency(hz); |
Adrian Suciu |
24:dae7123d432a | 120 | } |
Adrian Suciu |
24:dae7123d432a | 121 | |
Adrian Suciu |
24:dae7123d432a | 122 | /** |
Adrian Suciu |
24:dae7123d432a | 123 | * @brief Issues AD5270 a command |
Adrian Suciu |
24:dae7123d432a | 124 | * @param command - command to be sent |
Adrian Suciu |
24:dae7123d432a | 125 | * @param data - (optional)value for the requested command |
Adrian Suciu |
24:dae7123d432a | 126 | * @return response form the AD5270 |
Adrian Suciu |
24:dae7123d432a | 127 | */ |
Adrian Suciu |
24:dae7123d432a | 128 | uint16_t AD5270::write_cmd(uint8_t command, uint16_t data) |
Adrian Suciu |
24:dae7123d432a | 129 | { |
Adrian Suciu |
24:dae7123d432a | 130 | /* build 16 bit data to be written - Command + Value */ |
Adrian Suciu |
24:dae7123d432a | 131 | uint16_t ui16Command = ((command & 0x3C) << 8) | (data & 0x3FF); |
Adrian Suciu |
24:dae7123d432a | 132 | return write_reg(ui16Command); |
Adrian Suciu |
24:dae7123d432a | 133 | } |
Adrian Suciu |
24:dae7123d432a | 134 | |
Adrian Suciu |
24:dae7123d432a | 135 | /** |
Adrian Suciu |
24:dae7123d432a | 136 | * Enables the 50TP memory programming |
Adrian Suciu |
24:dae7123d432a | 137 | */ |
Adrian Suciu |
24:dae7123d432a | 138 | void AD5270::enable_50TP_programming() |
Adrian Suciu |
24:dae7123d432a | 139 | { |
Adrian Suciu |
24:dae7123d432a | 140 | uint8_t regVal = read_ctrl_reg(); |
Adrian Suciu |
24:dae7123d432a | 141 | write_cmd(WRITE_CTRL_REG, regVal | PROGRAM_50TP_ENABLE); // RDAC register write protect - allow update of wiper position through digital interface |
Adrian Suciu |
24:dae7123d432a | 142 | } |
Adrian Suciu |
24:dae7123d432a | 143 | |
Adrian Suciu |
24:dae7123d432a | 144 | /** |
Adrian Suciu |
24:dae7123d432a | 145 | * Stores current RDAC content to the 50TP memory |
Adrian Suciu |
24:dae7123d432a | 146 | */ |
Adrian Suciu |
24:dae7123d432a | 147 | void AD5270::store_50TP() |
Adrian Suciu |
24:dae7123d432a | 148 | { |
Adrian Suciu |
24:dae7123d432a | 149 | write_cmd(STORE_50TP); |
Adrian Suciu |
24:dae7123d432a | 150 | wait_ms(_WRITE_OPERATION_50TP_TIMEOUT); |
Adrian Suciu |
24:dae7123d432a | 151 | } |
Adrian Suciu |
24:dae7123d432a | 152 | |
Adrian Suciu |
24:dae7123d432a | 153 | /** |
Adrian Suciu |
24:dae7123d432a | 154 | * Disables the 50TP memory programming |
Adrian Suciu |
24:dae7123d432a | 155 | */ |
Adrian Suciu |
24:dae7123d432a | 156 | void AD5270::disable_50TP_programming() |
Adrian Suciu |
24:dae7123d432a | 157 | { |
Adrian Suciu |
24:dae7123d432a | 158 | uint8_t regVal = read_ctrl_reg(); |
Adrian Suciu |
24:dae7123d432a | 159 | write_cmd(WRITE_CTRL_REG, regVal & (~PROGRAM_50TP_ENABLE)); |
Adrian Suciu |
24:dae7123d432a | 160 | } |
Adrian Suciu |
24:dae7123d432a | 161 | |
Adrian Suciu |
24:dae7123d432a | 162 | /** |
Adrian Suciu |
24:dae7123d432a | 163 | * @brief Writes 16bit data to the AD5270 SPI interface |
Adrian Suciu |
24:dae7123d432a | 164 | * @param data to be written |
Adrian Suciu |
24:dae7123d432a | 165 | * @return data returned by the AD5270 |
Adrian Suciu |
24:dae7123d432a | 166 | */ |
Adrian Suciu |
24:dae7123d432a | 167 | uint16_t AD5270::write_reg(uint16_t data) |
Adrian Suciu |
24:dae7123d432a | 168 | { |
Adrian Suciu |
24:dae7123d432a | 169 | uint16_t result; |
Adrian Suciu |
24:dae7123d432a | 170 | uint8_t upper_byte = (data >> 8) & 0xFF; |
Adrian Suciu |
24:dae7123d432a | 171 | uint8_t lower_byte = data & 0xFF; |
Adrian Suciu |
24:dae7123d432a | 172 | ad5270.format(8, _SPI_MODE); |
Adrian Suciu |
24:dae7123d432a | 173 | cs = false; |
Adrian Suciu |
24:dae7123d432a | 174 | result = ((ad5270.write(upper_byte)) << 8); |
Adrian Suciu |
24:dae7123d432a | 175 | result |= ad5270.write(lower_byte); |
Adrian Suciu |
24:dae7123d432a | 176 | cs = true; |
Adrian Suciu |
24:dae7123d432a | 177 | return result; |
Adrian Suciu |
24:dae7123d432a | 178 | } |
Adrian Suciu |
24:dae7123d432a | 179 | |
Adrian Suciu |
24:dae7123d432a | 180 | /** |
Adrian Suciu |
24:dae7123d432a | 181 | * @brief Gets maximum resistance of the AD5270 digital rheostat |
Adrian Suciu |
24:dae7123d432a | 182 | * @return maximum resistance in ohms |
Adrian Suciu |
24:dae7123d432a | 183 | */ |
Adrian Suciu |
24:dae7123d432a | 184 | float AD5270::get_max_resistance() |
Adrian Suciu |
24:dae7123d432a | 185 | { |
Adrian Suciu |
24:dae7123d432a | 186 | return _max_resistance; |
Adrian Suciu |
24:dae7123d432a | 187 | } |
Adrian Suciu |
24:dae7123d432a | 188 | |
Adrian Suciu |
24:dae7123d432a | 189 | /** |
Adrian Suciu |
24:dae7123d432a | 190 | * Writes the wiper register. This includes reading the control register, |
Adrian Suciu |
24:dae7123d432a | 191 | * setting write protect off, writing the wiper, and reverting the settings |
Adrian Suciu |
24:dae7123d432a | 192 | * to the control reg. |
Adrian Suciu |
24:dae7123d432a | 193 | * @param data to be written |
Adrian Suciu |
24:dae7123d432a | 194 | */ |
Adrian Suciu |
24:dae7123d432a | 195 | void AD5270::write_wiper_reg(uint16_t data) |
Adrian Suciu |
24:dae7123d432a | 196 | { |
Adrian Suciu |
24:dae7123d432a | 197 | uint8_t reg_val = read_ctrl_reg(); |
Adrian Suciu |
24:dae7123d432a | 198 | write_cmd(WRITE_CTRL_REG, reg_val | RDAC_WRITE_PROTECT); // RDAC register write protect - allow update of wiper position through digital interface |
Adrian Suciu |
24:dae7123d432a | 199 | write_cmd(WRITE_RDAC, data); // write data to the RDAC register |
Adrian Suciu |
24:dae7123d432a | 200 | write_cmd(WRITE_CTRL_REG, reg_val); // RDAC register write protect - allow update of wiper position through digital interface |
Adrian Suciu |
24:dae7123d432a | 201 | } |
Adrian Suciu |
24:dae7123d432a | 202 | |
Adrian Suciu |
24:dae7123d432a | 203 | /** |
Adrian Suciu |
24:dae7123d432a | 204 | * Reads the wiper register value |
Adrian Suciu |
24:dae7123d432a | 205 | * @return value of the wiper register |
Adrian Suciu |
24:dae7123d432a | 206 | */ |
Adrian Suciu |
24:dae7123d432a | 207 | uint16_t AD5270::read_wiper_reg(void) |
Adrian Suciu |
24:dae7123d432a | 208 | { |
Adrian Suciu |
24:dae7123d432a | 209 | uint16_t RDAC_val; |
Adrian Suciu |
24:dae7123d432a | 210 | write_cmd(READ_RDAC); |
Adrian Suciu |
24:dae7123d432a | 211 | wait_us(_REG_OPERATION_TIMEOUT); |
Adrian Suciu |
24:dae7123d432a | 212 | RDAC_val = write_cmd(NO_OP); |
Adrian Suciu |
24:dae7123d432a | 213 | return RDAC_val; |
Adrian Suciu |
24:dae7123d432a | 214 | } |
Adrian Suciu |
24:dae7123d432a | 215 | |
Adrian Suciu |
24:dae7123d432a | 216 | /** |
Adrian Suciu |
24:dae7123d432a | 217 | * Reads the last programmed value of the 50TP memory |
Adrian Suciu |
24:dae7123d432a | 218 | * @return last programmed value |
Adrian Suciu |
24:dae7123d432a | 219 | */ |
Adrian Suciu |
24:dae7123d432a | 220 | uint8_t AD5270::read_50TP_last_address(void) |
Adrian Suciu |
24:dae7123d432a | 221 | { |
Adrian Suciu |
24:dae7123d432a | 222 | uint8_t ret_val; |
Adrian Suciu |
24:dae7123d432a | 223 | write_cmd(READ_50TP_ADDRESS); |
Adrian Suciu |
24:dae7123d432a | 224 | wait_us(_MEMORY_OPERATION_TIMEOUT); |
Adrian Suciu |
24:dae7123d432a | 225 | ret_val = write_cmd(NO_OP); |
Adrian Suciu |
24:dae7123d432a | 226 | return ret_val; |
Adrian Suciu |
24:dae7123d432a | 227 | } |
Adrian Suciu |
24:dae7123d432a | 228 | |
Adrian Suciu |
24:dae7123d432a | 229 | /** |
Adrian Suciu |
24:dae7123d432a | 230 | * Reads the content of a 50TP memory address |
Adrian Suciu |
24:dae7123d432a | 231 | * @param address memory to be read |
Adrian Suciu |
24:dae7123d432a | 232 | * @return value stored in the 50TP address |
Adrian Suciu |
24:dae7123d432a | 233 | */ |
Adrian Suciu |
24:dae7123d432a | 234 | uint16_t AD5270::read_50TP_memory(uint8_t address) |
Adrian Suciu |
24:dae7123d432a | 235 | { |
Adrian Suciu |
24:dae7123d432a | 236 | uint16_t ret_val; |
Adrian Suciu |
24:dae7123d432a | 237 | write_cmd(READ_50TP_CONTENTS, address); |
Adrian Suciu |
24:dae7123d432a | 238 | wait_us(_MEMORY_OPERATION_TIMEOUT); |
Adrian Suciu |
24:dae7123d432a | 239 | ret_val = write_cmd(NO_OP); |
Adrian Suciu |
24:dae7123d432a | 240 | return ret_val; |
Adrian Suciu |
24:dae7123d432a | 241 | } |
Adrian Suciu |
24:dae7123d432a | 242 | |
Adrian Suciu |
24:dae7123d432a | 243 | /** |
Adrian Suciu |
24:dae7123d432a | 244 | * Writes the control register |
Adrian Suciu |
24:dae7123d432a | 245 | * @param data to be written |
Adrian Suciu |
24:dae7123d432a | 246 | */ |
Adrian Suciu |
24:dae7123d432a | 247 | void AD5270::write_ctrl_reg(uint8_t data) |
Adrian Suciu |
24:dae7123d432a | 248 | { |
Adrian Suciu |
24:dae7123d432a | 249 | write_cmd(WRITE_CTRL_REG, data); |
Adrian Suciu |
24:dae7123d432a | 250 | } |
Adrian Suciu |
24:dae7123d432a | 251 | |
Adrian Suciu |
24:dae7123d432a | 252 | /** |
Adrian Suciu |
24:dae7123d432a | 253 | * Reads the control register |
Adrian Suciu |
24:dae7123d432a | 254 | * @return value of the control register |
Adrian Suciu |
24:dae7123d432a | 255 | */ |
Adrian Suciu |
24:dae7123d432a | 256 | uint8_t AD5270::read_ctrl_reg(void) |
Adrian Suciu |
24:dae7123d432a | 257 | { |
Adrian Suciu |
24:dae7123d432a | 258 | uint8_t ret_val; |
Adrian Suciu |
24:dae7123d432a | 259 | write_cmd(READ_CTRL_REG); |
Adrian Suciu |
24:dae7123d432a | 260 | wait_us(_REG_OPERATION_TIMEOUT); |
Adrian Suciu |
24:dae7123d432a | 261 | ret_val = write_cmd(NO_OP); |
Adrian Suciu |
24:dae7123d432a | 262 | return ret_val; |
Adrian Suciu |
24:dae7123d432a | 263 | } |
Adrian Suciu |
24:dae7123d432a | 264 | |
Adrian Suciu |
24:dae7123d432a | 265 | /** |
Adrian Suciu |
24:dae7123d432a | 266 | * Resets the wiper register value to the data last written in the 50TP |
Adrian Suciu |
24:dae7123d432a | 267 | */ |
Adrian Suciu |
24:dae7123d432a | 268 | void AD5270::reset_RDAC(void) |
Adrian Suciu |
24:dae7123d432a | 269 | { |
Adrian Suciu |
24:dae7123d432a | 270 | write_cmd(SW_RST); |
Adrian Suciu |
24:dae7123d432a | 271 | } |
Adrian Suciu |
24:dae7123d432a | 272 | |
Adrian Suciu |
24:dae7123d432a | 273 | /** |
Adrian Suciu |
24:dae7123d432a | 274 | * Changes the device mode, enabled or shutdown |
Adrian Suciu |
24:dae7123d432a | 275 | * @param mode - new mode of the device |
Adrian Suciu |
24:dae7123d432a | 276 | */ |
Adrian Suciu |
24:dae7123d432a | 277 | void AD5270::change_mode(AD5270Modes_t mode) |
Adrian Suciu |
24:dae7123d432a | 278 | { |
Adrian Suciu |
24:dae7123d432a | 279 | write_cmd(SW_SHUTDOWN, static_cast<uint8_t>(mode)); |
Adrian Suciu |
24:dae7123d432a | 280 | } |
Adrian Suciu |
24:dae7123d432a | 281 | |
Adrian Suciu |
24:dae7123d432a | 282 | |
Adrian Suciu |
24:dae7123d432a | 283 |