Forked repository to push EVAL-AD593x updates
Dependencies: platform_drivers
main.cpp@1:bd8aea0d51e0, 2019-09-16 (annotated)
- Committer:
- ssmith73
- Date:
- Mon Sep 16 14:08:37 2019 +0000
- Revision:
- 1:bd8aea0d51e0
- Parent:
- 0:86671e9c8db0
Initial Commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ssmith73 | 1:bd8aea0d51e0 | 1 | /*************************************************************************//** |
ssmith73 | 1:bd8aea0d51e0 | 2 | * @file main.cpp |
ssmith73 | 1:bd8aea0d51e0 | 3 | * @brief Main application code for AD5686 firmware example program |
ssmith73 | 1:bd8aea0d51e0 | 4 | * @author ssmith (sean.smith@analog.com) |
ssmith73 | 1:bd8aea0d51e0 | 5 | ****************************************************************************** |
ssmith73 | 1:bd8aea0d51e0 | 6 | * Copyright (c) 2019 Analog Devices, Inc. |
ssmith73 | 1:bd8aea0d51e0 | 7 | * |
ssmith73 | 1:bd8aea0d51e0 | 8 | * All rights reserved. |
ssmith73 | 1:bd8aea0d51e0 | 9 | * |
ssmith73 | 1:bd8aea0d51e0 | 10 | * Redistribution and use in source and binary forms, with or without |
ssmith73 | 1:bd8aea0d51e0 | 11 | * modification, are permitted provided that the following conditions are met: |
ssmith73 | 1:bd8aea0d51e0 | 12 | * - Redistributions of source code must retain the above copyright notice, |
ssmith73 | 1:bd8aea0d51e0 | 13 | * this list of conditions and the following disclaimer. |
ssmith73 | 1:bd8aea0d51e0 | 14 | * - Redistributions in binary form must reproduce the above copyright notice, |
ssmith73 | 1:bd8aea0d51e0 | 15 | * this list of conditions and the following disclaimer in the documentation |
ssmith73 | 1:bd8aea0d51e0 | 16 | * and/or other materials provided with the distribution. |
ssmith73 | 1:bd8aea0d51e0 | 17 | * - Modified versions of the software must be conspicuously marked as such. |
ssmith73 | 1:bd8aea0d51e0 | 18 | * - This software is licensed solely and exclusively for use with |
ssmith73 | 1:bd8aea0d51e0 | 19 | * processors/products manufactured by or for Analog Devices, Inc. |
ssmith73 | 1:bd8aea0d51e0 | 20 | * - This software may not be combined or merged with other code in any manner |
ssmith73 | 1:bd8aea0d51e0 | 21 | * that would cause the software to become subject to terms and |
ssmith73 | 1:bd8aea0d51e0 | 22 | * conditions which differ from those listed here. |
ssmith73 | 1:bd8aea0d51e0 | 23 | * - Neither the name of Analog Devices, Inc. nor the names of its |
ssmith73 | 1:bd8aea0d51e0 | 24 | * contributors may be used to endorse or promote products derived |
ssmith73 | 1:bd8aea0d51e0 | 25 | * from this software without specific prior written permission. |
ssmith73 | 1:bd8aea0d51e0 | 26 | * - The use of this software may or may not infringe the patent rights |
ssmith73 | 1:bd8aea0d51e0 | 27 | * of one or more patent holders. This license does not release you from |
ssmith73 | 1:bd8aea0d51e0 | 28 | * the requirement that you obtain separate licenses from these patent |
ssmith73 | 1:bd8aea0d51e0 | 29 | * holders to use this software. |
ssmith73 | 1:bd8aea0d51e0 | 30 | * |
ssmith73 | 1:bd8aea0d51e0 | 31 | * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. AND CONTRIBUTORS "AS IS" |
ssmith73 | 1:bd8aea0d51e0 | 32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
ssmith73 | 1:bd8aea0d51e0 | 33 | * NON-INFRINGEMENT, TITLE, MERCHANTABILITY AND FITNESS FOR A |
ssmith73 | 1:bd8aea0d51e0 | 34 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, |
ssmith73 | 1:bd8aea0d51e0 | 35 | * INC. OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
ssmith73 | 1:bd8aea0d51e0 | 36 | * SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES |
ssmith73 | 1:bd8aea0d51e0 | 37 | * (INCLUDING, BUT NOT LIMITED TO, DAMAGES ARISING OUT OF CLAIMS OF |
ssmith73 | 1:bd8aea0d51e0 | 38 | * INTELLECTUAL PROPERTY RIGHTS INFRINGEMENT; PROCUREMENT OF SUBSTITUTE |
ssmith73 | 1:bd8aea0d51e0 | 39 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
ssmith73 | 1:bd8aea0d51e0 | 40 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
ssmith73 | 1:bd8aea0d51e0 | 41 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
ssmith73 | 1:bd8aea0d51e0 | 42 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
ssmith73 | 1:bd8aea0d51e0 | 43 | * POSSIBILITY OF SUCH DAMAGE. |
ssmith73 | 1:bd8aea0d51e0 | 44 | * |
ssmith73 | 1:bd8aea0d51e0 | 45 | * 20180927-7CBSD SLA |
ssmith73 | 1:bd8aea0d51e0 | 46 | *****************************************************************************/ |
malavikasaji | 0:86671e9c8db0 | 47 | |
ssmith73 | 1:bd8aea0d51e0 | 48 | #include <mbed.h> |
ssmith73 | 1:bd8aea0d51e0 | 49 | #include <ctype.h> |
ssmith73 | 1:bd8aea0d51e0 | 50 | #include "app_config.h" |
ssmith73 | 1:bd8aea0d51e0 | 51 | |
ssmith73 | 1:bd8aea0d51e0 | 52 | #define NOT_USED 0 |
ssmith73 | 1:bd8aea0d51e0 | 53 | //Lower this value if storage becomes a problem |
ssmith73 | 1:bd8aea0d51e0 | 54 | #define MAX_FREQ_INCREMENTS 511 |
ssmith73 | 1:bd8aea0d51e0 | 55 | #define TEMP_LIMIT_MIN -40 |
ssmith73 | 1:bd8aea0d51e0 | 56 | #define TEMP_LIMIT_MAX 125 |
ssmith73 | 1:bd8aea0d51e0 | 57 | |
malavikasaji | 0:86671e9c8db0 | 58 | |
ssmith73 | 1:bd8aea0d51e0 | 59 | static void print_title(void); |
ssmith73 | 1:bd8aea0d51e0 | 60 | static void getMenuSelect(uint8_t *menuSelect); |
ssmith73 | 1:bd8aea0d51e0 | 61 | static void print_prompt(); |
ssmith73 | 1:bd8aea0d51e0 | 62 | static uint8_t read_temperature(); |
ssmith73 | 1:bd8aea0d51e0 | 63 | static uint8_t set_system_clock(); |
ssmith73 | 1:bd8aea0d51e0 | 64 | static uint8_t set_vrange_and_pga_gain(); |
ssmith73 | 1:bd8aea0d51e0 | 65 | static int32_t configure_system(); |
ssmith73 | 1:bd8aea0d51e0 | 66 | static uint8_t calculate_gain_factor(); |
ssmith73 | 1:bd8aea0d51e0 | 67 | static uint8_t guide(); |
ssmith73 | 1:bd8aea0d51e0 | 68 | static uint8_t impedance_sweep(); |
malavikasaji | 0:86671e9c8db0 | 69 | |
ssmith73 | 1:bd8aea0d51e0 | 70 | typedef struct ad5933_config_data { |
ssmith73 | 1:bd8aea0d51e0 | 71 | float start_freq; |
ssmith73 | 1:bd8aea0d51e0 | 72 | uint8_t pga_gain; |
ssmith73 | 1:bd8aea0d51e0 | 73 | float output_voltage_range; |
ssmith73 | 1:bd8aea0d51e0 | 74 | int32_t start_frequency; |
ssmith73 | 1:bd8aea0d51e0 | 75 | int32_t frequency_increment; |
ssmith73 | 1:bd8aea0d51e0 | 76 | int32_t number_increments; |
ssmith73 | 1:bd8aea0d51e0 | 77 | int32_t number_settling_cycles; |
ssmith73 | 1:bd8aea0d51e0 | 78 | }ad5933_config_data; |
malavikasaji | 0:86671e9c8db0 | 79 | |
ssmith73 | 1:bd8aea0d51e0 | 80 | ad5933_config_data config_data; |
ssmith73 | 1:bd8aea0d51e0 | 81 | |
ssmith73 | 1:bd8aea0d51e0 | 82 | static double gain_factor = 0; |
ssmith73 | 1:bd8aea0d51e0 | 83 | static double temperature; |
ssmith73 | 1:bd8aea0d51e0 | 84 | |
ssmith73 | 1:bd8aea0d51e0 | 85 | |
ssmith73 | 1:bd8aea0d51e0 | 86 | /******************************************************************************/ |
ssmith73 | 1:bd8aea0d51e0 | 87 | /************************** Variables Declarations ****************************/ |
ssmith73 | 1:bd8aea0d51e0 | 88 | /******************************************************************************/ |
malavikasaji | 0:86671e9c8db0 | 89 | |
ssmith73 | 1:bd8aea0d51e0 | 90 | /** |
ssmith73 | 1:bd8aea0d51e0 | 91 | The following definitions are a requirement for the platform_driver |
ssmith73 | 1:bd8aea0d51e0 | 92 | Pin are changed if required in the app_config.h file |
ssmith73 | 1:bd8aea0d51e0 | 93 | ***/ |
ssmith73 | 1:bd8aea0d51e0 | 94 | mbed::SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS); |
ssmith73 | 1:bd8aea0d51e0 | 95 | mbed::I2C i2c(I2C_SDA, I2C_SCL); |
ssmith73 | 1:bd8aea0d51e0 | 96 | PinName slave_selects[MAX_SLAVE_SELECTS]; |
malavikasaji | 0:86671e9c8db0 | 97 | |
ssmith73 | 1:bd8aea0d51e0 | 98 | i2c_init_param i2c_params = |
ssmith73 | 1:bd8aea0d51e0 | 99 | { |
ssmith73 | 1:bd8aea0d51e0 | 100 | GENERIC_I2C, // i2c type |
ssmith73 | 1:bd8aea0d51e0 | 101 | 0, // i2c id |
ssmith73 | 1:bd8aea0d51e0 | 102 | 100000, // i2c max speed (hz) |
ssmith73 | 1:bd8aea0d51e0 | 103 | AD5933_ADDRESS << 1, // i2c slave address //A0 tied high |
ssmith73 | 1:bd8aea0d51e0 | 104 | }; |
malavikasaji | 0:86671e9c8db0 | 105 | |
malavikasaji | 0:86671e9c8db0 | 106 | |
ssmith73 | 1:bd8aea0d51e0 | 107 | ad5933_init_param init_params = { |
ssmith73 | 1:bd8aea0d51e0 | 108 | i2c_params, // I2C parameters |
ssmith73 | 1:bd8aea0d51e0 | 109 | AD5933_INTERNAL_SYS_CLK, //current_sys_clk frequency (16MHz) |
ssmith73 | 1:bd8aea0d51e0 | 110 | AD5933_CONTROL_INT_SYSCLK, //current_clock_source |
ssmith73 | 1:bd8aea0d51e0 | 111 | AD5933_RANGE_1000mVpp, //current_gain |
ssmith73 | 1:bd8aea0d51e0 | 112 | AD5933_GAIN_X1, //current_range |
ssmith73 | 1:bd8aea0d51e0 | 113 | AD5933_15_CYCLES, //current_settling |
ssmith73 | 1:bd8aea0d51e0 | 114 | }; |
ssmith73 | 1:bd8aea0d51e0 | 115 | |
ssmith73 | 1:bd8aea0d51e0 | 116 | ad5933_dev *device; |
ssmith73 | 1:bd8aea0d51e0 | 117 | int32_t connected = -1; |
ssmith73 | 1:bd8aea0d51e0 | 118 | Serial pc(USBTX, USBRX, 115200); |
ssmith73 | 1:bd8aea0d51e0 | 119 | |
malavikasaji | 0:86671e9c8db0 | 120 | |
malavikasaji | 0:86671e9c8db0 | 121 | int main() |
malavikasaji | 0:86671e9c8db0 | 122 | { |
ssmith73 | 1:bd8aea0d51e0 | 123 | uint8_t menu_select = 0; |
ssmith73 | 1:bd8aea0d51e0 | 124 | print_title(); |
ssmith73 | 1:bd8aea0d51e0 | 125 | connected = ad5933_init(&device, init_params); |
malavikasaji | 0:86671e9c8db0 | 126 | |
malavikasaji | 0:86671e9c8db0 | 127 | |
ssmith73 | 1:bd8aea0d51e0 | 128 | //Do a quick check to ensure basic connectivity is ok |
ssmith73 | 1:bd8aea0d51e0 | 129 | temperature = ad5933_get_temperature(device); |
ssmith73 | 1:bd8aea0d51e0 | 130 | if (temperature >= TEMP_LIMIT_MIN && temperature <= TEMP_LIMIT_MAX) { |
ssmith73 | 1:bd8aea0d51e0 | 131 | pc.printf("\nTemperature: %f, AD5933 initialisation successful!\n",temperature); |
ssmith73 | 1:bd8aea0d51e0 | 132 | } |
ssmith73 | 1:bd8aea0d51e0 | 133 | else { |
ssmith73 | 1:bd8aea0d51e0 | 134 | pc.printf("AD5933 initialisation reported a bad temperature - recommend debug :\n"); |
ssmith73 | 1:bd8aea0d51e0 | 135 | } |
ssmith73 | 1:bd8aea0d51e0 | 136 | |
ssmith73 | 1:bd8aea0d51e0 | 137 | while (connected == SUCCESS) { |
ssmith73 | 1:bd8aea0d51e0 | 138 | print_prompt(); |
ssmith73 | 1:bd8aea0d51e0 | 139 | getMenuSelect(&menu_select); |
ssmith73 | 1:bd8aea0d51e0 | 140 | config_data.start_freq = 10000; |
malavikasaji | 0:86671e9c8db0 | 141 | |
ssmith73 | 1:bd8aea0d51e0 | 142 | if (menu_select > 12) |
ssmith73 | 1:bd8aea0d51e0 | 143 | print_prompt(); |
ssmith73 | 1:bd8aea0d51e0 | 144 | else switch (menu_select) |
ssmith73 | 1:bd8aea0d51e0 | 145 | { |
ssmith73 | 1:bd8aea0d51e0 | 146 | case 0: |
ssmith73 | 1:bd8aea0d51e0 | 147 | guide(); |
ssmith73 | 1:bd8aea0d51e0 | 148 | wait(2); |
ssmith73 | 1:bd8aea0d51e0 | 149 | break; |
malavikasaji | 0:86671e9c8db0 | 150 | |
ssmith73 | 1:bd8aea0d51e0 | 151 | case 1: |
ssmith73 | 1:bd8aea0d51e0 | 152 | read_temperature(); |
ssmith73 | 1:bd8aea0d51e0 | 153 | break; |
ssmith73 | 1:bd8aea0d51e0 | 154 | case 2: |
ssmith73 | 1:bd8aea0d51e0 | 155 | configure_system(); |
ssmith73 | 1:bd8aea0d51e0 | 156 | break; |
ssmith73 | 1:bd8aea0d51e0 | 157 | case 3: |
ssmith73 | 1:bd8aea0d51e0 | 158 | calculate_gain_factor(); |
ssmith73 | 1:bd8aea0d51e0 | 159 | break; |
ssmith73 | 1:bd8aea0d51e0 | 160 | case 4: |
ssmith73 | 1:bd8aea0d51e0 | 161 | impedance_sweep(); |
ssmith73 | 1:bd8aea0d51e0 | 162 | break; |
malavikasaji | 0:86671e9c8db0 | 163 | |
ssmith73 | 1:bd8aea0d51e0 | 164 | default: |
ssmith73 | 1:bd8aea0d51e0 | 165 | pc.printf("Invalid option: Ignored."); |
ssmith73 | 1:bd8aea0d51e0 | 166 | break; |
ssmith73 | 1:bd8aea0d51e0 | 167 | } |
ssmith73 | 1:bd8aea0d51e0 | 168 | |
ssmith73 | 1:bd8aea0d51e0 | 169 | wait(0.1); |
ssmith73 | 1:bd8aea0d51e0 | 170 | } |
ssmith73 | 1:bd8aea0d51e0 | 171 | |
ssmith73 | 1:bd8aea0d51e0 | 172 | return 0; |
malavikasaji | 0:86671e9c8db0 | 173 | } |
malavikasaji | 0:86671e9c8db0 | 174 | |
ssmith73 | 1:bd8aea0d51e0 | 175 | //! Prints the title block |
ssmith73 | 1:bd8aea0d51e0 | 176 | void print_title() |
ssmith73 | 1:bd8aea0d51e0 | 177 | { |
ssmith73 | 1:bd8aea0d51e0 | 178 | pc.printf("*****************************************************************\n"); |
ssmith73 | 1:bd8aea0d51e0 | 179 | pc.printf("* AD5933 Demonstration Program -- (mbed 1.0) *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 180 | pc.printf("* *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 181 | pc.printf("* This program demonstrates communication with the AD5933 *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 182 | pc.printf("* *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 183 | pc.printf("* 1 MSPS, 12-Bit Impedance Converter, Network analyser *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 184 | pc.printf("* *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 185 | pc.printf("* Set the baud rate to 115200 select the newline terminator. *\n"); |
ssmith73 | 1:bd8aea0d51e0 | 186 | pc.printf("*****************************************************************\n"); |
ssmith73 | 1:bd8aea0d51e0 | 187 | } |
malavikasaji | 0:86671e9c8db0 | 188 | |
ssmith73 | 1:bd8aea0d51e0 | 189 | void print_prompt() |
malavikasaji | 0:86671e9c8db0 | 190 | { |
ssmith73 | 1:bd8aea0d51e0 | 191 | pc.printf("\n\n\rCommand Summary:\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 192 | pc.printf(" 0 -Software Guide\n"); |
ssmith73 | 1:bd8aea0d51e0 | 193 | pc.printf(" 1 -Read temperature\n"); |
ssmith73 | 1:bd8aea0d51e0 | 194 | pc.printf(" 2 -Configure voltage-range, PGA-Gain and sweep parameters\n"); |
ssmith73 | 1:bd8aea0d51e0 | 195 | pc.printf(" 3 -Calculate Gain-Factor\n"); |
ssmith73 | 1:bd8aea0d51e0 | 196 | pc.printf(" 4 -Do an impedance sweep\n"); |
ssmith73 | 1:bd8aea0d51e0 | 197 | pc.printf("\n\rMake a selection...\n"); |
ssmith73 | 1:bd8aea0d51e0 | 198 | |
malavikasaji | 0:86671e9c8db0 | 199 | } |
malavikasaji | 0:86671e9c8db0 | 200 | |
malavikasaji | 0:86671e9c8db0 | 201 | |
ssmith73 | 1:bd8aea0d51e0 | 202 | static void getMenuSelect(uint8_t *menuSelect) { |
ssmith73 | 1:bd8aea0d51e0 | 203 | pc.scanf("%d", (int *)menuSelect); |
ssmith73 | 1:bd8aea0d51e0 | 204 | } |
ssmith73 | 1:bd8aea0d51e0 | 205 | |
ssmith73 | 1:bd8aea0d51e0 | 206 | static uint8_t read_temperature() |
ssmith73 | 1:bd8aea0d51e0 | 207 | { |
ssmith73 | 1:bd8aea0d51e0 | 208 | temperature = ad5933_get_temperature(device); |
ssmith73 | 1:bd8aea0d51e0 | 209 | |
ssmith73 | 1:bd8aea0d51e0 | 210 | pc.printf("Current temperature:%.3f C", temperature); |
ssmith73 | 1:bd8aea0d51e0 | 211 | return SUCCESS; |
ssmith73 | 1:bd8aea0d51e0 | 212 | } |
ssmith73 | 1:bd8aea0d51e0 | 213 | |
ssmith73 | 1:bd8aea0d51e0 | 214 | static uint8_t set_system_clock() |
ssmith73 | 1:bd8aea0d51e0 | 215 | { |
ssmith73 | 1:bd8aea0d51e0 | 216 | pc.printf(" Select Internal (1) or external clock (2): "); |
ssmith73 | 1:bd8aea0d51e0 | 217 | |
ssmith73 | 1:bd8aea0d51e0 | 218 | int input = 0; |
ssmith73 | 1:bd8aea0d51e0 | 219 | pc.scanf("%d", &input); |
ssmith73 | 1:bd8aea0d51e0 | 220 | if (isdigit(input) == 0 && (input == 1 || input == 2)) |
ssmith73 | 1:bd8aea0d51e0 | 221 | { |
ssmith73 | 1:bd8aea0d51e0 | 222 | input == 1 ? pc.printf("\n You selected Internal clock source\n") : |
ssmith73 | 1:bd8aea0d51e0 | 223 | pc.printf(" You selected external Source clock source\n"); |
ssmith73 | 1:bd8aea0d51e0 | 224 | } |
ssmith73 | 1:bd8aea0d51e0 | 225 | else |
ssmith73 | 1:bd8aea0d51e0 | 226 | { |
ssmith73 | 1:bd8aea0d51e0 | 227 | pc.printf("Invalid entry\n"); |
ssmith73 | 1:bd8aea0d51e0 | 228 | wait(2); |
ssmith73 | 1:bd8aea0d51e0 | 229 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 230 | } |
ssmith73 | 1:bd8aea0d51e0 | 231 | |
ssmith73 | 1:bd8aea0d51e0 | 232 | if (input == 2) |
ssmith73 | 1:bd8aea0d51e0 | 233 | { |
ssmith73 | 1:bd8aea0d51e0 | 234 | |
ssmith73 | 1:bd8aea0d51e0 | 235 | pc.printf(" Enter external clock frequency in Hz "); |
ssmith73 | 1:bd8aea0d51e0 | 236 | pc.scanf("%d", &input); |
ssmith73 | 1:bd8aea0d51e0 | 237 | if (isdigit(input) == 0 && input > 0 && input < 20000000) |
ssmith73 | 1:bd8aea0d51e0 | 238 | { |
ssmith73 | 1:bd8aea0d51e0 | 239 | pc.printf(" External clk-source frequency set to %d \n", input); |
ssmith73 | 1:bd8aea0d51e0 | 240 | } |
ssmith73 | 1:bd8aea0d51e0 | 241 | else |
ssmith73 | 1:bd8aea0d51e0 | 242 | { |
ssmith73 | 1:bd8aea0d51e0 | 243 | pc.printf("Invalid entry\n"); |
ssmith73 | 1:bd8aea0d51e0 | 244 | wait(2); |
ssmith73 | 1:bd8aea0d51e0 | 245 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 246 | } |
ssmith73 | 1:bd8aea0d51e0 | 247 | } |
ssmith73 | 1:bd8aea0d51e0 | 248 | |
ssmith73 | 1:bd8aea0d51e0 | 249 | ad5933_set_system_clk(device, |
ssmith73 | 1:bd8aea0d51e0 | 250 | input == 1 ? AD5933_CONTROL_INT_SYSCLK : |
ssmith73 | 1:bd8aea0d51e0 | 251 | AD5933_CONTROL_EXT_SYSCLK, |
ssmith73 | 1:bd8aea0d51e0 | 252 | input); |
ssmith73 | 1:bd8aea0d51e0 | 253 | |
ssmith73 | 1:bd8aea0d51e0 | 254 | return 0; |
ssmith73 | 1:bd8aea0d51e0 | 255 | } |
ssmith73 | 1:bd8aea0d51e0 | 256 | |
ssmith73 | 1:bd8aea0d51e0 | 257 | static uint8_t set_vrange_and_pga_gain() |
malavikasaji | 0:86671e9c8db0 | 258 | { |
ssmith73 | 1:bd8aea0d51e0 | 259 | int input; |
ssmith73 | 1:bd8aea0d51e0 | 260 | uint8_t v_range = AD5933_RANGE_1000mVpp; |
ssmith73 | 1:bd8aea0d51e0 | 261 | |
ssmith73 | 1:bd8aea0d51e0 | 262 | pc.printf(" Select output voltage range:\n"); |
ssmith73 | 1:bd8aea0d51e0 | 263 | pc.printf(" 0: 2Vpp typical:\n"); |
ssmith73 | 1:bd8aea0d51e0 | 264 | pc.printf(" 1: 200mVpp typical:\n"); |
ssmith73 | 1:bd8aea0d51e0 | 265 | pc.printf(" 2: 400mVpp typical:\n"); |
ssmith73 | 1:bd8aea0d51e0 | 266 | pc.printf(" 3: 1Vpp typical:\n"); |
ssmith73 | 1:bd8aea0d51e0 | 267 | |
ssmith73 | 1:bd8aea0d51e0 | 268 | |
ssmith73 | 1:bd8aea0d51e0 | 269 | pc.scanf("%d", &input); |
ssmith73 | 1:bd8aea0d51e0 | 270 | if (input >= 0 && input < 4) |
ssmith73 | 1:bd8aea0d51e0 | 271 | { |
ssmith73 | 1:bd8aea0d51e0 | 272 | switch (input) |
ssmith73 | 1:bd8aea0d51e0 | 273 | { |
ssmith73 | 1:bd8aea0d51e0 | 274 | case AD5933_RANGE_2000mVpp: { |
ssmith73 | 1:bd8aea0d51e0 | 275 | pc.printf(" Selected 2V pp typical.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 276 | break; |
ssmith73 | 1:bd8aea0d51e0 | 277 | } |
ssmith73 | 1:bd8aea0d51e0 | 278 | case AD5933_RANGE_200mVpp: { |
ssmith73 | 1:bd8aea0d51e0 | 279 | pc.printf(" Selected 200mV pp typical.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 280 | break; |
ssmith73 | 1:bd8aea0d51e0 | 281 | } |
ssmith73 | 1:bd8aea0d51e0 | 282 | case AD5933_RANGE_400mVpp: { |
ssmith73 | 1:bd8aea0d51e0 | 283 | pc.printf(" Selected 400mV pp typical.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 284 | break; |
ssmith73 | 1:bd8aea0d51e0 | 285 | } |
ssmith73 | 1:bd8aea0d51e0 | 286 | case AD5933_RANGE_1000mVpp: { |
ssmith73 | 1:bd8aea0d51e0 | 287 | pc.printf(" Selected 1V pp typical.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 288 | break; |
ssmith73 | 1:bd8aea0d51e0 | 289 | } |
ssmith73 | 1:bd8aea0d51e0 | 290 | } |
ssmith73 | 1:bd8aea0d51e0 | 291 | v_range = input; |
ssmith73 | 1:bd8aea0d51e0 | 292 | } |
ssmith73 | 1:bd8aea0d51e0 | 293 | else |
ssmith73 | 1:bd8aea0d51e0 | 294 | { |
ssmith73 | 1:bd8aea0d51e0 | 295 | pc.printf("Invalid entry\n"); |
ssmith73 | 1:bd8aea0d51e0 | 296 | wait(2); |
ssmith73 | 1:bd8aea0d51e0 | 297 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 298 | } |
ssmith73 | 1:bd8aea0d51e0 | 299 | |
ssmith73 | 1:bd8aea0d51e0 | 300 | pc.printf("\n Select PGA Gain (0=X5, 1=X1)\n"); |
ssmith73 | 1:bd8aea0d51e0 | 301 | pc.scanf("%d", &input); |
ssmith73 | 1:bd8aea0d51e0 | 302 | if (input >= 0 && input < 2) |
ssmith73 | 1:bd8aea0d51e0 | 303 | { |
ssmith73 | 1:bd8aea0d51e0 | 304 | config_data.pga_gain = input; |
ssmith73 | 1:bd8aea0d51e0 | 305 | config_data.output_voltage_range = v_range; |
ssmith73 | 1:bd8aea0d51e0 | 306 | |
ssmith73 | 1:bd8aea0d51e0 | 307 | pc.printf("PGA gain set to : "); |
ssmith73 | 1:bd8aea0d51e0 | 308 | input == AD5933_GAIN_X5 ? printf("X5\n\n") : printf("X1\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 309 | ad5933_set_range_and_gain(device, |
ssmith73 | 1:bd8aea0d51e0 | 310 | config_data.output_voltage_range, |
ssmith73 | 1:bd8aea0d51e0 | 311 | config_data.pga_gain); |
ssmith73 | 1:bd8aea0d51e0 | 312 | } |
ssmith73 | 1:bd8aea0d51e0 | 313 | else |
ssmith73 | 1:bd8aea0d51e0 | 314 | { |
ssmith73 | 1:bd8aea0d51e0 | 315 | pc.printf("Invalid entry: write aborted\n"); |
ssmith73 | 1:bd8aea0d51e0 | 316 | wait(2); |
ssmith73 | 1:bd8aea0d51e0 | 317 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 318 | } |
ssmith73 | 1:bd8aea0d51e0 | 319 | |
ssmith73 | 1:bd8aea0d51e0 | 320 | |
ssmith73 | 1:bd8aea0d51e0 | 321 | return SUCCESS; |
malavikasaji | 0:86671e9c8db0 | 322 | } |
malavikasaji | 0:86671e9c8db0 | 323 | |
ssmith73 | 1:bd8aea0d51e0 | 324 | static int32_t configure_system() |
ssmith73 | 1:bd8aea0d51e0 | 325 | { |
ssmith73 | 1:bd8aea0d51e0 | 326 | |
ssmith73 | 1:bd8aea0d51e0 | 327 | pc.printf("Configure the impedance meter\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 328 | set_vrange_and_pga_gain(); |
ssmith73 | 1:bd8aea0d51e0 | 329 | set_system_clock(); |
ssmith73 | 1:bd8aea0d51e0 | 330 | |
ssmith73 | 1:bd8aea0d51e0 | 331 | int start_freq; |
ssmith73 | 1:bd8aea0d51e0 | 332 | int freq_inc; |
ssmith73 | 1:bd8aea0d51e0 | 333 | int num_increments; |
ssmith73 | 1:bd8aea0d51e0 | 334 | int num_settling_cycles; |
ssmith73 | 1:bd8aea0d51e0 | 335 | int multiplier = AD5933_SETTLING_X1; |
ssmith73 | 1:bd8aea0d51e0 | 336 | |
ssmith73 | 1:bd8aea0d51e0 | 337 | pc.printf("\n Enter start-frequency as a decimal number: "); |
ssmith73 | 1:bd8aea0d51e0 | 338 | if (pc.scanf("%d", &start_freq) == 1) |
ssmith73 | 1:bd8aea0d51e0 | 339 | { |
ssmith73 | 1:bd8aea0d51e0 | 340 | if (start_freq <= 0) |
ssmith73 | 1:bd8aea0d51e0 | 341 | { |
ssmith73 | 1:bd8aea0d51e0 | 342 | pc.printf(" Invalid entry, write aborted: \n"); |
ssmith73 | 1:bd8aea0d51e0 | 343 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 344 | } |
ssmith73 | 1:bd8aea0d51e0 | 345 | } |
ssmith73 | 1:bd8aea0d51e0 | 346 | |
ssmith73 | 1:bd8aea0d51e0 | 347 | |
ssmith73 | 1:bd8aea0d51e0 | 348 | pc.printf("\n Enter frequency-increment as a decimal number: "); |
ssmith73 | 1:bd8aea0d51e0 | 349 | pc.scanf("%d", &freq_inc); |
ssmith73 | 1:bd8aea0d51e0 | 350 | if (isdigit(freq_inc) != 0 || freq_inc <= 0) |
ssmith73 | 1:bd8aea0d51e0 | 351 | { |
ssmith73 | 1:bd8aea0d51e0 | 352 | pc.printf(" Invalid entry, write aborted: \n"); |
ssmith73 | 1:bd8aea0d51e0 | 353 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 354 | } |
ssmith73 | 1:bd8aea0d51e0 | 355 | |
ssmith73 | 1:bd8aea0d51e0 | 356 | pc.printf("\n Enter the number of increments as a decimal number: "); |
ssmith73 | 1:bd8aea0d51e0 | 357 | pc.printf("\n Number of increments must be less than %d\n", MAX_FREQ_INCREMENTS); |
ssmith73 | 1:bd8aea0d51e0 | 358 | pc.scanf("%d", &num_increments); |
ssmith73 | 1:bd8aea0d51e0 | 359 | if (isdigit(num_increments) != 0 || num_increments > MAX_FREQ_INCREMENTS) |
ssmith73 | 1:bd8aea0d51e0 | 360 | { |
ssmith73 | 1:bd8aea0d51e0 | 361 | pc.printf(" Invalid entry, write aborted: \n"); |
ssmith73 | 1:bd8aea0d51e0 | 362 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 363 | } |
ssmith73 | 1:bd8aea0d51e0 | 364 | |
ssmith73 | 1:bd8aea0d51e0 | 365 | pc.printf("Enter the number of settling-time cycles before ADC is triggered.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 366 | pc.scanf("%d", &num_settling_cycles); |
ssmith73 | 1:bd8aea0d51e0 | 367 | if (num_settling_cycles > AD5933_MAX_SETTLING_CYCLES ) |
ssmith73 | 1:bd8aea0d51e0 | 368 | { |
ssmith73 | 1:bd8aea0d51e0 | 369 | pc.printf(" Invalid entry, write aborted: \n"); |
ssmith73 | 1:bd8aea0d51e0 | 370 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 371 | } |
ssmith73 | 1:bd8aea0d51e0 | 372 | |
ssmith73 | 1:bd8aea0d51e0 | 373 | pc.printf("Set the settling time multiplier (X1=0, X2=1, X4=2).\n"); |
ssmith73 | 1:bd8aea0d51e0 | 374 | pc.scanf("%d", &multiplier); |
ssmith73 | 1:bd8aea0d51e0 | 375 | if (multiplier > 2) |
ssmith73 | 1:bd8aea0d51e0 | 376 | { |
ssmith73 | 1:bd8aea0d51e0 | 377 | pc.printf(" Invalid entry, write aborted: \n"); |
ssmith73 | 1:bd8aea0d51e0 | 378 | return FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 379 | } |
ssmith73 | 1:bd8aea0d51e0 | 380 | else |
ssmith73 | 1:bd8aea0d51e0 | 381 | { //adjust X4 option to match memory map |
ssmith73 | 1:bd8aea0d51e0 | 382 | if (multiplier == 2) |
ssmith73 | 1:bd8aea0d51e0 | 383 | multiplier = AD5933_SETTLING_X4; |
ssmith73 | 1:bd8aea0d51e0 | 384 | } |
ssmith73 | 1:bd8aea0d51e0 | 385 | |
ssmith73 | 1:bd8aea0d51e0 | 386 | pc.printf("\n Setting start frequency to %d\n\r", (unsigned int)start_freq); |
ssmith73 | 1:bd8aea0d51e0 | 387 | pc.printf(" Setting frequency increment to %d\n\r", (unsigned int)freq_inc); |
ssmith73 | 1:bd8aea0d51e0 | 388 | pc.printf(" Setting the number of increments to %d\n\r", (unsigned int)num_increments); |
ssmith73 | 1:bd8aea0d51e0 | 389 | pc.printf(" Setting the number of settling-cycles to %d\n\r", (unsigned int)num_settling_cycles); |
ssmith73 | 1:bd8aea0d51e0 | 390 | pc.printf(" The multiplier for the settling-cycles %d\n\r", (unsigned int)multiplier+1); |
ssmith73 | 1:bd8aea0d51e0 | 391 | |
ssmith73 | 1:bd8aea0d51e0 | 392 | //update device state |
ssmith73 | 1:bd8aea0d51e0 | 393 | config_data.start_freq = start_freq; |
ssmith73 | 1:bd8aea0d51e0 | 394 | config_data.frequency_increment = freq_inc; |
ssmith73 | 1:bd8aea0d51e0 | 395 | config_data.number_increments = num_increments; |
ssmith73 | 1:bd8aea0d51e0 | 396 | config_data.number_settling_cycles = num_settling_cycles; |
ssmith73 | 1:bd8aea0d51e0 | 397 | |
ssmith73 | 1:bd8aea0d51e0 | 398 | ad5933_set_settling_time(device,multiplier,num_settling_cycles); |
ssmith73 | 1:bd8aea0d51e0 | 399 | ad5933_set_range_and_gain(device, device->current_range, device->current_gain); |
ssmith73 | 1:bd8aea0d51e0 | 400 | ad5933_config_sweep(device, start_freq, freq_inc, num_increments); |
ssmith73 | 1:bd8aea0d51e0 | 401 | |
ssmith73 | 1:bd8aea0d51e0 | 402 | return SUCCESS; |
ssmith73 | 1:bd8aea0d51e0 | 403 | |
ssmith73 | 1:bd8aea0d51e0 | 404 | } |
ssmith73 | 1:bd8aea0d51e0 | 405 | |
ssmith73 | 1:bd8aea0d51e0 | 406 | static uint8_t calculate_gain_factor() |
ssmith73 | 1:bd8aea0d51e0 | 407 | { |
ssmith73 | 1:bd8aea0d51e0 | 408 | |
ssmith73 | 1:bd8aea0d51e0 | 409 | double calibration_impedance; |
ssmith73 | 1:bd8aea0d51e0 | 410 | |
ssmith73 | 1:bd8aea0d51e0 | 411 | pc.printf("\n\nCalculate the gain-factor (see datasheet for information)\n"); |
ssmith73 | 1:bd8aea0d51e0 | 412 | pc.printf("Calcualted gain-factor will be stored for impedance measurements and\n"); |
ssmith73 | 1:bd8aea0d51e0 | 413 | pc.printf("displayed on the terminal screen.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 414 | pc.printf("Ensure that the system has been configured before\n"); |
ssmith73 | 1:bd8aea0d51e0 | 415 | pc.printf("calculating the gain factor\n"); |
ssmith73 | 1:bd8aea0d51e0 | 416 | |
ssmith73 | 1:bd8aea0d51e0 | 417 | ad5933_config_sweep(device, |
ssmith73 | 1:bd8aea0d51e0 | 418 | config_data.start_freq, |
ssmith73 | 1:bd8aea0d51e0 | 419 | config_data.frequency_increment, |
ssmith73 | 1:bd8aea0d51e0 | 420 | config_data.number_increments); |
ssmith73 | 1:bd8aea0d51e0 | 421 | |
ssmith73 | 1:bd8aea0d51e0 | 422 | // Do standby, init-start freq, start the sweep, and wait for valid data |
ssmith73 | 1:bd8aea0d51e0 | 423 | ad5933_start_sweep(device); |
ssmith73 | 1:bd8aea0d51e0 | 424 | |
ssmith73 | 1:bd8aea0d51e0 | 425 | pc.printf("\nEnter calibration resistance in Ohms: "); |
ssmith73 | 1:bd8aea0d51e0 | 426 | pc.scanf("%le", &calibration_impedance); |
ssmith73 | 1:bd8aea0d51e0 | 427 | |
ssmith73 | 1:bd8aea0d51e0 | 428 | |
ssmith73 | 1:bd8aea0d51e0 | 429 | pc.printf("Calculating gain factor\n\r"); |
ssmith73 | 1:bd8aea0d51e0 | 430 | |
ssmith73 | 1:bd8aea0d51e0 | 431 | gain_factor = ad5933_calculate_gain_factor(device, |
ssmith73 | 1:bd8aea0d51e0 | 432 | calibration_impedance, |
ssmith73 | 1:bd8aea0d51e0 | 433 | AD5933_FUNCTION_REPEAT_FREQ); |
ssmith73 | 1:bd8aea0d51e0 | 434 | pc.printf("\n\r Calculated gain factor %e\n\r", gain_factor); |
ssmith73 | 1:bd8aea0d51e0 | 435 | |
ssmith73 | 1:bd8aea0d51e0 | 436 | |
ssmith73 | 1:bd8aea0d51e0 | 437 | return SUCCESS; |
ssmith73 | 1:bd8aea0d51e0 | 438 | } |
ssmith73 | 1:bd8aea0d51e0 | 439 | |
ssmith73 | 1:bd8aea0d51e0 | 440 | |
ssmith73 | 1:bd8aea0d51e0 | 441 | |
ssmith73 | 1:bd8aea0d51e0 | 442 | |
ssmith73 | 1:bd8aea0d51e0 | 443 | static uint8_t guide() |
ssmith73 | 1:bd8aea0d51e0 | 444 | { |
ssmith73 | 1:bd8aea0d51e0 | 445 | |
ssmith73 | 1:bd8aea0d51e0 | 446 | pc.printf("\n\rAD5933-Demo quick-start guide: \n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 447 | pc.printf("This program can be used both as a demo of the AD5933 impedance \n"); |
ssmith73 | 1:bd8aea0d51e0 | 448 | pc.printf("measurement system and as a starting point for developing a \n"); |
ssmith73 | 1:bd8aea0d51e0 | 449 | pc.printf("more advanced program for prototyping. This program is not \n"); |
ssmith73 | 1:bd8aea0d51e0 | 450 | pc.printf("provided as production-quality code, but as a helpful starting point.\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 451 | |
ssmith73 | 1:bd8aea0d51e0 | 452 | pc.printf("As a quick start, the following steps can be implemented to ensure\n"); |
ssmith73 | 1:bd8aea0d51e0 | 453 | pc.printf("firmware is communcating with the board and measurements taking place.\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 454 | |
ssmith73 | 1:bd8aea0d51e0 | 455 | pc.printf("Firstly - use menu option 1 to read the on-chip temperature.\n"); |
ssmith73 | 1:bd8aea0d51e0 | 456 | pc.printf("If a realistic temperature comes back - you are good to go :)\n\n"); |
ssmith73 | 1:bd8aea0d51e0 | 457 | |
ssmith73 | 1:bd8aea0d51e0 | 458 | pc.printf("Step 1\tConnect a 200k Resistor across the SMA terminals of the PMOD 1A\n"); |
ssmith73 | 1:bd8aea0d51e0 | 459 | pc.printf("Step 2\tSelect the 100k feedback resistor by pulling the SEL pin high\n"); |
ssmith73 | 1:bd8aea0d51e0 | 460 | pc.printf("Step 2\tConfigure the impedance system with Menu Option 2\n"); |
ssmith73 | 1:bd8aea0d51e0 | 461 | pc.printf("Step 3\tCalculate the gain factor with menu-item 3\n"); |
ssmith73 | 1:bd8aea0d51e0 | 462 | pc.printf("Step 3\tReplace the 200k impedance across the SMA terminals with a \n"); |
ssmith73 | 1:bd8aea0d51e0 | 463 | pc.printf("different 'unknown' impedance (300K perhaps)\n"); |
ssmith73 | 1:bd8aea0d51e0 | 464 | pc.printf("Step 4\tRun the impedance measurement with menu-item 4\n"); |
ssmith73 | 1:bd8aea0d51e0 | 465 | pc.printf("\tresults are dispayed on the terminal\n"); |
ssmith73 | 1:bd8aea0d51e0 | 466 | |
ssmith73 | 1:bd8aea0d51e0 | 467 | return SUCCESS; |
malavikasaji | 0:86671e9c8db0 | 468 | } |
malavikasaji | 0:86671e9c8db0 | 469 | |
malavikasaji | 0:86671e9c8db0 | 470 | |
ssmith73 | 1:bd8aea0d51e0 | 471 | |
ssmith73 | 1:bd8aea0d51e0 | 472 | static uint8_t impedance_sweep() { |
ssmith73 | 1:bd8aea0d51e0 | 473 | |
ssmith73 | 1:bd8aea0d51e0 | 474 | ad5933_result results; |
ssmith73 | 1:bd8aea0d51e0 | 475 | |
ssmith73 | 1:bd8aea0d51e0 | 476 | pc.printf("\nPerform a sweep to calculate an unknown impedance (see datasheet for information)\n"); |
ssmith73 | 1:bd8aea0d51e0 | 477 | pc.printf("System should have been previously configured (Menu Option 2)\n"); |
ssmith73 | 1:bd8aea0d51e0 | 478 | pc.printf("Impedance will be caculated and results shown.\n\r"); |
ssmith73 | 1:bd8aea0d51e0 | 479 | |
ssmith73 | 1:bd8aea0d51e0 | 480 | int32_t status = FAILURE; |
ssmith73 | 1:bd8aea0d51e0 | 481 | double impedance; |
ssmith73 | 1:bd8aea0d51e0 | 482 | float frequency = config_data.start_freq; |
ssmith73 | 1:bd8aea0d51e0 | 483 | |
ssmith73 | 1:bd8aea0d51e0 | 484 | |
ssmith73 | 1:bd8aea0d51e0 | 485 | ad5933_config_sweep(device, |
ssmith73 | 1:bd8aea0d51e0 | 486 | config_data.start_freq, |
ssmith73 | 1:bd8aea0d51e0 | 487 | config_data.frequency_increment, |
ssmith73 | 1:bd8aea0d51e0 | 488 | config_data.number_increments); |
ssmith73 | 1:bd8aea0d51e0 | 489 | |
ssmith73 | 1:bd8aea0d51e0 | 490 | /* |
ssmith73 | 1:bd8aea0d51e0 | 491 | > program frequency sweep parameters into relevant registerS |
ssmith73 | 1:bd8aea0d51e0 | 492 | > place the ad5933 into standby mode. |
ssmith73 | 1:bd8aea0d51e0 | 493 | > start frequency register |
ssmith73 | 1:bd8aea0d51e0 | 494 | > number of increments register |
ssmith73 | 1:bd8aea0d51e0 | 495 | */ |
ssmith73 | 1:bd8aea0d51e0 | 496 | ad5933_start_sweep(device); |
ssmith73 | 1:bd8aea0d51e0 | 497 | pc.printf("\n FREQUENCY MAGNITUDE PHASE IMPEDANCE\n"); |
ssmith73 | 1:bd8aea0d51e0 | 498 | |
ssmith73 | 1:bd8aea0d51e0 | 499 | do { |
ssmith73 | 1:bd8aea0d51e0 | 500 | |
ssmith73 | 1:bd8aea0d51e0 | 501 | //Fill up the results struct with data |
ssmith73 | 1:bd8aea0d51e0 | 502 | results = ad5933_calculate_impedance(device, |
ssmith73 | 1:bd8aea0d51e0 | 503 | gain_factor, |
ssmith73 | 1:bd8aea0d51e0 | 504 | AD5933_FUNCTION_INC_FREQ); |
ssmith73 | 1:bd8aea0d51e0 | 505 | |
ssmith73 | 1:bd8aea0d51e0 | 506 | impedance = 1 / (results.magnitude * gain_factor); |
ssmith73 | 1:bd8aea0d51e0 | 507 | |
ssmith73 | 1:bd8aea0d51e0 | 508 | pc.printf(" %.2f,", frequency); |
ssmith73 | 1:bd8aea0d51e0 | 509 | pc.printf(" %.2f", results.magnitude); |
ssmith73 | 1:bd8aea0d51e0 | 510 | pc.printf(" %.2f", results.phase); |
ssmith73 | 1:bd8aea0d51e0 | 511 | pc.printf(" %.2f\n", impedance); |
ssmith73 | 1:bd8aea0d51e0 | 512 | |
ssmith73 | 1:bd8aea0d51e0 | 513 | frequency += config_data.frequency_increment; |
ssmith73 | 1:bd8aea0d51e0 | 514 | |
ssmith73 | 1:bd8aea0d51e0 | 515 | //poll the status register to check if frequency sweep is complete. |
ssmith73 | 1:bd8aea0d51e0 | 516 | status = ad5933_get_register_value(device, AD5933_REG_STATUS, 1); |
ssmith73 | 1:bd8aea0d51e0 | 517 | |
ssmith73 | 1:bd8aea0d51e0 | 518 | } while ((status & AD5933_STAT_SWEEP_DONE) == 0); |
ssmith73 | 1:bd8aea0d51e0 | 519 | |
ssmith73 | 1:bd8aea0d51e0 | 520 | return status; |
malavikasaji | 0:86671e9c8db0 | 521 | } |
malavikasaji | 0:86671e9c8db0 | 522 | |
malavikasaji | 0:86671e9c8db0 | 523 | |
malavikasaji | 0:86671e9c8db0 | 524 | |
ssmith73 | 1:bd8aea0d51e0 | 525 | |
ssmith73 | 1:bd8aea0d51e0 | 526 |