Driver for the AD5270 digipot
Dependents: ad5270-helloworld CN0357 CN0396
For additional information check out the mbed page of the Analog Devices wiki: https://wiki.analog.com/resources/tools-software/mbed-drivers-all
AD5270.cpp@1:9f9dd8c48e8a, 2016-08-18 (annotated)
- Committer:
- adisuciu
- Date:
- Thu Aug 18 12:38:39 2016 +0000
- Revision:
- 1:9f9dd8c48e8a
- Parent:
- 0:18d434f6f122
Implemented basic daisychain support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
adisuciu | 0:18d434f6f122 | 1 | /** |
adisuciu | 0:18d434f6f122 | 2 | * @file AD5270.cpp |
adisuciu | 0:18d434f6f122 | 3 | * @brief Source file for AD5270 rheostat |
adisuciu | 0:18d434f6f122 | 4 | * @author Analog Devices Inc. |
adisuciu | 0:18d434f6f122 | 5 | * |
adisuciu | 0:18d434f6f122 | 6 | * For support please go to: |
adisuciu | 0:18d434f6f122 | 7 | * Github: https://github.com/analogdevicesinc/mbed-adi |
adisuciu | 0:18d434f6f122 | 8 | * Support: https://ez.analog.com/community/linux-device-drivers/microcontroller-no-os-drivers |
adisuciu | 0:18d434f6f122 | 9 | * Product: http://www.analog.com/ad5270 |
adisuciu | 0:18d434f6f122 | 10 | * More: https://wiki.analog.com/resources/tools-software/mbed-drivers-all |
adisuciu | 0:18d434f6f122 | 11 | |
adisuciu | 0:18d434f6f122 | 12 | ******************************************************************************** |
adisuciu | 0:18d434f6f122 | 13 | * Copyright 2016(c) Analog Devices, Inc. |
adisuciu | 0:18d434f6f122 | 14 | * |
adisuciu | 0:18d434f6f122 | 15 | * All rights reserved. |
adisuciu | 0:18d434f6f122 | 16 | * |
adisuciu | 0:18d434f6f122 | 17 | * Redistribution and use in source and binary forms, with or without |
adisuciu | 0:18d434f6f122 | 18 | * modification, are permitted provided that the following conditions are met: |
adisuciu | 0:18d434f6f122 | 19 | * - Redistributions of source code must retain the above copyright |
adisuciu | 0:18d434f6f122 | 20 | * notice, this list of conditions and the following disclaimer. |
adisuciu | 0:18d434f6f122 | 21 | * - Redistributions in binary form must reproduce the above copyright |
adisuciu | 0:18d434f6f122 | 22 | * notice, this list of conditions and the following disclaimer in |
adisuciu | 0:18d434f6f122 | 23 | * the documentation and/or other materials provided with the |
adisuciu | 0:18d434f6f122 | 24 | * distribution. |
adisuciu | 0:18d434f6f122 | 25 | * - Neither the name of Analog Devices, Inc. nor the names of its |
adisuciu | 0:18d434f6f122 | 26 | * contributors may be used to endorse or promote products derived |
adisuciu | 0:18d434f6f122 | 27 | * from this software without specific prior written permission. |
adisuciu | 0:18d434f6f122 | 28 | * - The use of this software may or may not infringe the patent rights |
adisuciu | 0:18d434f6f122 | 29 | * of one or more patent holders. This license does not release you |
adisuciu | 0:18d434f6f122 | 30 | * from the requirement that you obtain separate licenses from these |
adisuciu | 0:18d434f6f122 | 31 | * patent holders to use this software. |
adisuciu | 0:18d434f6f122 | 32 | * - Use of the software either in source or binary form, must be run |
adisuciu | 0:18d434f6f122 | 33 | * on or directly connected to an Analog Devices Inc. component. |
adisuciu | 0:18d434f6f122 | 34 | * |
adisuciu | 0:18d434f6f122 | 35 | * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR |
adisuciu | 0:18d434f6f122 | 36 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, |
adisuciu | 0:18d434f6f122 | 37 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
adisuciu | 0:18d434f6f122 | 38 | * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, |
adisuciu | 0:18d434f6f122 | 39 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
adisuciu | 0:18d434f6f122 | 40 | * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR |
adisuciu | 0:18d434f6f122 | 41 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
adisuciu | 0:18d434f6f122 | 42 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
adisuciu | 0:18d434f6f122 | 43 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
adisuciu | 0:18d434f6f122 | 44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
adisuciu | 0:18d434f6f122 | 45 | * |
adisuciu | 0:18d434f6f122 | 46 | ********************************************************************************/ |
adisuciu | 0:18d434f6f122 | 47 | |
adisuciu | 0:18d434f6f122 | 48 | |
adisuciu | 0:18d434f6f122 | 49 | #include "mbed.h" |
adisuciu | 0:18d434f6f122 | 50 | #include "AD5270.h" |
adisuciu | 0:18d434f6f122 | 51 | |
adisuciu | 0:18d434f6f122 | 52 | /** |
adisuciu | 0:18d434f6f122 | 53 | * @brief AD5270 constructor, sets CS pin and SPI format |
adisuciu | 0:18d434f6f122 | 54 | * @param CS - (optional)chip select of the AD5270 |
adisuciu | 0:18d434f6f122 | 55 | * @param max_resistance - (optional) nominal resistance of the AD5270 chip in ohms |
adisuciu | 0:18d434f6f122 | 56 | * @param MOSI - (optional)pin of the SPI interface |
adisuciu | 0:18d434f6f122 | 57 | * @param MISO - (optional)pin of the SPI interface |
adisuciu | 0:18d434f6f122 | 58 | * @param SCK - (optional)pin of the SPI interface |
adisuciu | 0:18d434f6f122 | 59 | */ |
adisuciu | 0:18d434f6f122 | 60 | AD5270::AD5270(PinName CS, float max_resistance, PinName MOSI, PinName MISO, PinName SCK): |
adisuciu | 0:18d434f6f122 | 61 | ad5270(MOSI, MISO, SCK), cs(CS), _max_resistance(max_resistance) |
adisuciu | 0:18d434f6f122 | 62 | { |
adisuciu | 0:18d434f6f122 | 63 | cs = true; |
adisuciu | 0:18d434f6f122 | 64 | ad5270.format(8, _SPI_MODE); |
adisuciu | 0:18d434f6f122 | 65 | } |
adisuciu | 0:18d434f6f122 | 66 | |
adisuciu | 0:18d434f6f122 | 67 | /** |
adisuciu | 0:18d434f6f122 | 68 | * @brief Compute for the nearest RDAC value from given resistance |
adisuciu | 0:18d434f6f122 | 69 | * @param resistance - resistor |
adisuciu | 0:18d434f6f122 | 70 | * @return RDAC value - closest possible to given resistance |
adisuciu | 0:18d434f6f122 | 71 | */ |
adisuciu | 0:18d434f6f122 | 72 | uint16_t AD5270::calc_RDAC(float resistance) |
adisuciu | 0:18d434f6f122 | 73 | { |
adisuciu | 0:18d434f6f122 | 74 | return static_cast<uint16_t>( (resistance / _max_resistance) * 1024.0 ); |
adisuciu | 0:18d434f6f122 | 75 | } |
adisuciu | 0:18d434f6f122 | 76 | |
adisuciu | 0:18d434f6f122 | 77 | /** |
adisuciu | 0:18d434f6f122 | 78 | * @brief sets a new value for the RDAC |
adisuciu | 0:18d434f6f122 | 79 | * @param resistance new value for the resistance |
adisuciu | 0:18d434f6f122 | 80 | * @return actual value of the resistance in the RDAC |
adisuciu | 0:18d434f6f122 | 81 | */ |
adisuciu | 0:18d434f6f122 | 82 | float AD5270::write_RDAC(float resistance) |
adisuciu | 0:18d434f6f122 | 83 | { |
adisuciu | 0:18d434f6f122 | 84 | // Compute for the RDAC code nearest to the required feedback resistance |
adisuciu | 0:18d434f6f122 | 85 | uint16_t RDAC_val = calc_RDAC(resistance); |
adisuciu | 0:18d434f6f122 | 86 | float RDAC_Value = ((static_cast<float> (RDAC_val) * _max_resistance) / 1024.0); // inverse operation to get actual resistance in the RDAC |
adisuciu | 0:18d434f6f122 | 87 | write_wiper_reg(RDAC_val); |
adisuciu | 0:18d434f6f122 | 88 | return RDAC_Value; |
adisuciu | 0:18d434f6f122 | 89 | } |
adisuciu | 0:18d434f6f122 | 90 | |
adisuciu | 0:18d434f6f122 | 91 | /** |
adisuciu | 0:18d434f6f122 | 92 | * Reads the RDAC register |
adisuciu | 0:18d434f6f122 | 93 | * @return RDAC resistor value |
adisuciu | 0:18d434f6f122 | 94 | */ |
adisuciu | 0:18d434f6f122 | 95 | float AD5270::read_RDAC() |
adisuciu | 0:18d434f6f122 | 96 | { |
adisuciu | 0:18d434f6f122 | 97 | uint16_t RDAC_val = read_wiper_reg(); |
adisuciu | 0:18d434f6f122 | 98 | return ((static_cast<float> (RDAC_val) * _max_resistance) / 1024.0); |
adisuciu | 0:18d434f6f122 | 99 | } |
adisuciu | 0:18d434f6f122 | 100 | |
adisuciu | 0:18d434f6f122 | 101 | /** |
adisuciu | 0:18d434f6f122 | 102 | * @brief Puts the AD5270 SDO line in to Hi-Z mode |
adisuciu | 0:18d434f6f122 | 103 | * @return none |
adisuciu | 0:18d434f6f122 | 104 | */ |
adisuciu | 0:18d434f6f122 | 105 | void AD5270::set_SDO_HiZ(void) |
adisuciu | 0:18d434f6f122 | 106 | { |
adisuciu | 0:18d434f6f122 | 107 | write_reg(HI_Z_Cmd); |
adisuciu | 0:18d434f6f122 | 108 | wait_us(2); |
adisuciu | 0:18d434f6f122 | 109 | write_reg(NO_OP_cmd); |
adisuciu | 0:18d434f6f122 | 110 | } |
adisuciu | 0:18d434f6f122 | 111 | |
adisuciu | 0:18d434f6f122 | 112 | /** |
adisuciu | 0:18d434f6f122 | 113 | * @brief Set AD5270 SPI frequency |
adisuciu | 0:18d434f6f122 | 114 | * @param hz - SPI bus frequency in hz |
adisuciu | 0:18d434f6f122 | 115 | * @return none |
adisuciu | 0:18d434f6f122 | 116 | */ |
adisuciu | 0:18d434f6f122 | 117 | void AD5270::frequency(int hz) |
adisuciu | 0:18d434f6f122 | 118 | { |
adisuciu | 0:18d434f6f122 | 119 | ad5270.frequency(hz); |
adisuciu | 0:18d434f6f122 | 120 | } |
adisuciu | 0:18d434f6f122 | 121 | |
adisuciu | 0:18d434f6f122 | 122 | /** |
adisuciu | 0:18d434f6f122 | 123 | * @brief Issues AD5270 a command |
adisuciu | 0:18d434f6f122 | 124 | * @param command - command to be sent |
adisuciu | 0:18d434f6f122 | 125 | * @param data - (optional)value for the requested command |
adisuciu | 0:18d434f6f122 | 126 | * @return response form the AD5270 |
adisuciu | 0:18d434f6f122 | 127 | */ |
adisuciu | 1:9f9dd8c48e8a | 128 | uint16_t AD5270::write_cmd(uint8_t command, uint16_t data, bool toggle_cs) |
adisuciu | 0:18d434f6f122 | 129 | { |
adisuciu | 0:18d434f6f122 | 130 | /* build 16 bit data to be written - Command + Value */ |
adisuciu | 0:18d434f6f122 | 131 | uint16_t ui16Command = ((command & 0x3C) << 8) | (data & 0x3FF); |
adisuciu | 1:9f9dd8c48e8a | 132 | return write_reg(ui16Command, toggle_cs); |
adisuciu | 0:18d434f6f122 | 133 | } |
adisuciu | 0:18d434f6f122 | 134 | |
adisuciu | 0:18d434f6f122 | 135 | /** |
adisuciu | 0:18d434f6f122 | 136 | * Enables the 50TP memory programming |
adisuciu | 0:18d434f6f122 | 137 | */ |
adisuciu | 0:18d434f6f122 | 138 | void AD5270::enable_50TP_programming() |
adisuciu | 0:18d434f6f122 | 139 | { |
adisuciu | 0:18d434f6f122 | 140 | uint8_t regVal = read_ctrl_reg(); |
adisuciu | 0:18d434f6f122 | 141 | write_cmd(WRITE_CTRL_REG, regVal | PROGRAM_50TP_ENABLE); // RDAC register write protect - allow update of wiper position through digital interface |
adisuciu | 0:18d434f6f122 | 142 | } |
adisuciu | 0:18d434f6f122 | 143 | |
adisuciu | 0:18d434f6f122 | 144 | /** |
adisuciu | 0:18d434f6f122 | 145 | * Stores current RDAC content to the 50TP memory |
adisuciu | 0:18d434f6f122 | 146 | */ |
adisuciu | 0:18d434f6f122 | 147 | void AD5270::store_50TP() |
adisuciu | 0:18d434f6f122 | 148 | { |
adisuciu | 0:18d434f6f122 | 149 | write_cmd(STORE_50TP); |
adisuciu | 0:18d434f6f122 | 150 | wait_ms(_WRITE_OPERATION_50TP_TIMEOUT); |
adisuciu | 0:18d434f6f122 | 151 | } |
adisuciu | 0:18d434f6f122 | 152 | |
adisuciu | 0:18d434f6f122 | 153 | /** |
adisuciu | 0:18d434f6f122 | 154 | * Disables the 50TP memory programming |
adisuciu | 0:18d434f6f122 | 155 | */ |
adisuciu | 0:18d434f6f122 | 156 | void AD5270::disable_50TP_programming() |
adisuciu | 0:18d434f6f122 | 157 | { |
adisuciu | 0:18d434f6f122 | 158 | uint8_t regVal = read_ctrl_reg(); |
adisuciu | 0:18d434f6f122 | 159 | write_cmd(WRITE_CTRL_REG, regVal & (~PROGRAM_50TP_ENABLE)); |
adisuciu | 0:18d434f6f122 | 160 | } |
adisuciu | 0:18d434f6f122 | 161 | |
adisuciu | 0:18d434f6f122 | 162 | /** |
adisuciu | 0:18d434f6f122 | 163 | * @brief Writes 16bit data to the AD5270 SPI interface |
adisuciu | 0:18d434f6f122 | 164 | * @param data to be written |
adisuciu | 0:18d434f6f122 | 165 | * @return data returned by the AD5270 |
adisuciu | 0:18d434f6f122 | 166 | */ |
adisuciu | 1:9f9dd8c48e8a | 167 | uint16_t AD5270::write_reg(uint16_t data, bool toggle_cs) |
adisuciu | 0:18d434f6f122 | 168 | { |
adisuciu | 0:18d434f6f122 | 169 | uint16_t result; |
adisuciu | 0:18d434f6f122 | 170 | uint8_t upper_byte = (data >> 8) & 0xFF; |
adisuciu | 0:18d434f6f122 | 171 | uint8_t lower_byte = data & 0xFF; |
adisuciu | 0:18d434f6f122 | 172 | ad5270.format(8, _SPI_MODE); |
adisuciu | 1:9f9dd8c48e8a | 173 | cs = false & toggle_cs; |
adisuciu | 0:18d434f6f122 | 174 | result = ((ad5270.write(upper_byte)) << 8); |
adisuciu | 0:18d434f6f122 | 175 | result |= ad5270.write(lower_byte); |
adisuciu | 1:9f9dd8c48e8a | 176 | cs = true & toggle_cs; |
adisuciu | 0:18d434f6f122 | 177 | return result; |
adisuciu | 0:18d434f6f122 | 178 | } |
adisuciu | 0:18d434f6f122 | 179 | |
adisuciu | 0:18d434f6f122 | 180 | /** |
adisuciu | 0:18d434f6f122 | 181 | * @brief Gets maximum resistance of the AD5270 digital rheostat |
adisuciu | 0:18d434f6f122 | 182 | * @return maximum resistance in ohms |
adisuciu | 0:18d434f6f122 | 183 | */ |
adisuciu | 0:18d434f6f122 | 184 | float AD5270::get_max_resistance() |
adisuciu | 0:18d434f6f122 | 185 | { |
adisuciu | 0:18d434f6f122 | 186 | return _max_resistance; |
adisuciu | 0:18d434f6f122 | 187 | } |
adisuciu | 0:18d434f6f122 | 188 | |
adisuciu | 0:18d434f6f122 | 189 | /** |
adisuciu | 0:18d434f6f122 | 190 | * Writes the wiper register. This includes reading the control register, |
adisuciu | 0:18d434f6f122 | 191 | * setting write protect off, writing the wiper, and reverting the settings |
adisuciu | 0:18d434f6f122 | 192 | * to the control reg. |
adisuciu | 0:18d434f6f122 | 193 | * @param data to be written |
adisuciu | 0:18d434f6f122 | 194 | */ |
adisuciu | 0:18d434f6f122 | 195 | void AD5270::write_wiper_reg(uint16_t data) |
adisuciu | 0:18d434f6f122 | 196 | { |
adisuciu | 0:18d434f6f122 | 197 | uint8_t reg_val = read_ctrl_reg(); |
adisuciu | 0:18d434f6f122 | 198 | write_cmd(WRITE_CTRL_REG, reg_val | RDAC_WRITE_PROTECT); // RDAC register write protect - allow update of wiper position through digital interface |
adisuciu | 0:18d434f6f122 | 199 | write_cmd(WRITE_RDAC, data); // write data to the RDAC register |
adisuciu | 0:18d434f6f122 | 200 | write_cmd(WRITE_CTRL_REG, reg_val); // RDAC register write protect - allow update of wiper position through digital interface |
adisuciu | 0:18d434f6f122 | 201 | } |
adisuciu | 0:18d434f6f122 | 202 | |
adisuciu | 0:18d434f6f122 | 203 | /** |
adisuciu | 0:18d434f6f122 | 204 | * Reads the wiper register value |
adisuciu | 0:18d434f6f122 | 205 | * @return value of the wiper register |
adisuciu | 0:18d434f6f122 | 206 | */ |
adisuciu | 0:18d434f6f122 | 207 | uint16_t AD5270::read_wiper_reg(void) |
adisuciu | 0:18d434f6f122 | 208 | { |
adisuciu | 0:18d434f6f122 | 209 | uint16_t RDAC_val; |
adisuciu | 0:18d434f6f122 | 210 | write_cmd(READ_RDAC); |
adisuciu | 0:18d434f6f122 | 211 | wait_us(_REG_OPERATION_TIMEOUT); |
adisuciu | 0:18d434f6f122 | 212 | RDAC_val = write_cmd(NO_OP); |
adisuciu | 0:18d434f6f122 | 213 | return RDAC_val; |
adisuciu | 0:18d434f6f122 | 214 | } |
adisuciu | 0:18d434f6f122 | 215 | |
adisuciu | 0:18d434f6f122 | 216 | /** |
adisuciu | 0:18d434f6f122 | 217 | * Reads the last programmed value of the 50TP memory |
adisuciu | 0:18d434f6f122 | 218 | * @return last programmed value |
adisuciu | 0:18d434f6f122 | 219 | */ |
adisuciu | 0:18d434f6f122 | 220 | uint8_t AD5270::read_50TP_last_address(void) |
adisuciu | 0:18d434f6f122 | 221 | { |
adisuciu | 0:18d434f6f122 | 222 | uint8_t ret_val; |
adisuciu | 0:18d434f6f122 | 223 | write_cmd(READ_50TP_ADDRESS); |
adisuciu | 0:18d434f6f122 | 224 | wait_us(_MEMORY_OPERATION_TIMEOUT); |
adisuciu | 0:18d434f6f122 | 225 | ret_val = write_cmd(NO_OP); |
adisuciu | 0:18d434f6f122 | 226 | return ret_val; |
adisuciu | 0:18d434f6f122 | 227 | } |
adisuciu | 0:18d434f6f122 | 228 | |
adisuciu | 0:18d434f6f122 | 229 | /** |
adisuciu | 0:18d434f6f122 | 230 | * Reads the content of a 50TP memory address |
adisuciu | 0:18d434f6f122 | 231 | * @param address memory to be read |
adisuciu | 0:18d434f6f122 | 232 | * @return value stored in the 50TP address |
adisuciu | 0:18d434f6f122 | 233 | */ |
adisuciu | 0:18d434f6f122 | 234 | uint16_t AD5270::read_50TP_memory(uint8_t address) |
adisuciu | 0:18d434f6f122 | 235 | { |
adisuciu | 0:18d434f6f122 | 236 | uint16_t ret_val; |
adisuciu | 0:18d434f6f122 | 237 | write_cmd(READ_50TP_CONTENTS, address); |
adisuciu | 0:18d434f6f122 | 238 | wait_us(_MEMORY_OPERATION_TIMEOUT); |
adisuciu | 0:18d434f6f122 | 239 | ret_val = write_cmd(NO_OP); |
adisuciu | 0:18d434f6f122 | 240 | return ret_val; |
adisuciu | 0:18d434f6f122 | 241 | } |
adisuciu | 0:18d434f6f122 | 242 | |
adisuciu | 0:18d434f6f122 | 243 | /** |
adisuciu | 0:18d434f6f122 | 244 | * Writes the control register |
adisuciu | 0:18d434f6f122 | 245 | * @param data to be written |
adisuciu | 0:18d434f6f122 | 246 | */ |
adisuciu | 0:18d434f6f122 | 247 | void AD5270::write_ctrl_reg(uint8_t data) |
adisuciu | 0:18d434f6f122 | 248 | { |
adisuciu | 0:18d434f6f122 | 249 | write_cmd(WRITE_CTRL_REG, data); |
adisuciu | 0:18d434f6f122 | 250 | } |
adisuciu | 0:18d434f6f122 | 251 | |
adisuciu | 0:18d434f6f122 | 252 | /** |
adisuciu | 0:18d434f6f122 | 253 | * Reads the control register |
adisuciu | 0:18d434f6f122 | 254 | * @return value of the control register |
adisuciu | 0:18d434f6f122 | 255 | */ |
adisuciu | 0:18d434f6f122 | 256 | uint8_t AD5270::read_ctrl_reg(void) |
adisuciu | 0:18d434f6f122 | 257 | { |
adisuciu | 0:18d434f6f122 | 258 | uint8_t ret_val; |
adisuciu | 0:18d434f6f122 | 259 | write_cmd(READ_CTRL_REG); |
adisuciu | 0:18d434f6f122 | 260 | wait_us(_REG_OPERATION_TIMEOUT); |
adisuciu | 0:18d434f6f122 | 261 | ret_val = write_cmd(NO_OP); |
adisuciu | 0:18d434f6f122 | 262 | return ret_val; |
adisuciu | 0:18d434f6f122 | 263 | } |
adisuciu | 0:18d434f6f122 | 264 | |
adisuciu | 0:18d434f6f122 | 265 | /** |
adisuciu | 0:18d434f6f122 | 266 | * Resets the wiper register value to the data last written in the 50TP |
adisuciu | 0:18d434f6f122 | 267 | */ |
adisuciu | 0:18d434f6f122 | 268 | void AD5270::reset_RDAC(void) |
adisuciu | 0:18d434f6f122 | 269 | { |
adisuciu | 0:18d434f6f122 | 270 | write_cmd(SW_RST); |
adisuciu | 0:18d434f6f122 | 271 | } |
adisuciu | 0:18d434f6f122 | 272 | |
adisuciu | 0:18d434f6f122 | 273 | /** |
adisuciu | 0:18d434f6f122 | 274 | * Changes the device mode, enabled or shutdown |
adisuciu | 0:18d434f6f122 | 275 | * @param mode - new mode of the device |
adisuciu | 0:18d434f6f122 | 276 | */ |
adisuciu | 0:18d434f6f122 | 277 | void AD5270::change_mode(AD5270Modes_t mode) |
adisuciu | 0:18d434f6f122 | 278 | { |
adisuciu | 0:18d434f6f122 | 279 | write_cmd(SW_SHUTDOWN, static_cast<uint8_t>(mode)); |
adisuciu | 0:18d434f6f122 | 280 | } |
adisuciu | 0:18d434f6f122 | 281 | |
adisuciu | 1:9f9dd8c48e8a | 282 | void AD5270::daisy_chain(uint8_t *buffer, uint8_t size) |
adisuciu | 1:9f9dd8c48e8a | 283 | { |
adisuciu | 1:9f9dd8c48e8a | 284 | cs = 0; |
adisuciu | 1:9f9dd8c48e8a | 285 | for(int i = 0; i < size; i++) |
adisuciu | 1:9f9dd8c48e8a | 286 | buffer[i] = ad5270.write(buffer[i]); |
adisuciu | 1:9f9dd8c48e8a | 287 | cs = 1; |
adisuciu | 1:9f9dd8c48e8a | 288 | } |
adisuciu | 0:18d434f6f122 | 289 |