cn0540_init_params.h

00001 /******************************************************************************
00002  *Copyright (c)2020 Analog Devices, Inc.  
00003  *
00004  * Licensed under the 2020-04-27-CN0540EC License(the "License");
00005  * you may not use this file except in compliance with the License.
00006  *
00007  ****************************************************************************/
00008 
00009 #ifndef _INIT_PARAMS_H_
00010 #define _INIT_PARAMS_H_
00011 
00012 #ifdef __cplusplus
00013 extern "C"
00014 {
00015 #endif
00016 
00017 #include <mbed.h>
00018 #include <stdint.h>
00019 #include "ad77681.h"
00020 #include "ltc26x6.h"
00021 //#include "cn0540_piezo.h"
00022 #include "platform_drivers.h"
00023 #include "platform_support.h"
00024 #include "spi_extra.h"
00025 #include "i2c_extra.h"
00026 #include "gpio.h"
00027 
00028 /******************************************************************************/
00029 /********************** Macros and Constants Definitions **********************/
00030 /******************************************************************************/
00031 
00032 //DAC address
00033 #define LTC2606_I2C_ADDRESS 0x10
00034 //GPIOs pins
00035 #define ARD_RED_LED_PIN     D0
00036 #define ARD_BLUE_LED_PIN    D1
00037 #define DRDY_PIN            D2
00038 #define ADC_RST_PIN         D7
00039 #define ARD_BUF_EN_PIN      D9
00040 
00041 // Init params
00042 
00043 // Init SPI extra parameters structure
00044 mbed_spi_init_param spi_init_extra_params = {
00045     .spi_clk_pin =  SPI_SCK,
00046     .spi_miso_pin = SPI_MISO,
00047     .spi_mosi_pin = SPI_MOSI
00048 };                                           
00049 // SPI bus init parameters
00050 spi_init_param spi_params = {
00051     20000000,       // SPI Speed
00052     SPI_CS,         // SPI CS select index
00053     SPI_MODE_3,     // SPI Mode 
00054     &spi_init_extra_params, // SPI extra configurations
00055 };
00056 
00057 // Initial parameters for the ADC AD7768-1
00058 ad77681_init_param init_params = { 
00059     
00060     spi_params,                 // SPI parameters
00061     AD77681_ECO,                // power_mode
00062     AD77681_MCLK_DIV_16,        // mclk_div
00063     AD77681_CONV_CONTINUOUS,    // conv_mode
00064     AD77681_AIN_SHORT,          // diag_mux_sel
00065     false,                      // conv_diag_sel
00066     AD77681_CONV_24BIT,         // conv_len
00067     AD77681_NO_CRC,             // crc_sel
00068     0,                          // status bit
00069     AD77681_VCM_HALF_VCC,       // VCM setup
00070     AD77681_AINn_ENABLED,       // AIN- precharge buffer
00071     AD77681_AINp_ENABLED,       // AIN+ precharge buffer            
00072     AD77681_BUFn_ENABLED,       // REF- buffer
00073     AD77681_BUFp_ENABLED,       // REF+ buffer
00074     AD77681_FIR,                // FIR Filter
00075     AD77681_SINC5_FIR_DECx32,   // Decimate by 32
00076     0,                          // OS ratio of SINC3
00077     4096,                       // Reference voltage
00078     16384,                      // MCLK in kHz
00079     32000,                      // Sample rate in Hz
00080     1,                          // Data frame bytes
00081 };
00082 
00083 //Extra mbed_i2c_init_param
00084 mbed_i2c_init_param mbed_i2c_init_dac_extra_params = {
00085     .i2c_sda_pin =  I2C_SDA,
00086     .i2c_scl_pin = I2C_SCL,
00087 };      
00088     
00089 // Initial parameters for the DAC LTC2606's I2C bus 
00090 i2c_init_param i2c_params_dac = {
00091         100000,                                     // I2C speed (hz)
00092         LTC26X6_WRITE_ADDRESS(LTC2606_I2C_ADDRESS), // I2C slave address
00093         &mbed_i2c_init_dac_extra_params,
00094 };  
00095 
00096 // Initial parameters for the DAC LTC2606 itself
00097 ltc26x6_init_param init_params_dac = { 
00098         i2c_params_dac, // I2C parameters
00099         16,             // Resolution (LTC2606)
00100         2.5,            // Reference Voltage
00101         -0.001          // Typical offset
00102 };
00103 
00104 /*
00105  *  User-defined coefficients for programmable FIR filter, max 56 coeffs
00106  *  
00107  *  Please note that, inserted coefficiets will be mirrored afterwards,
00108  *  so you must insert only one half of all the coefficients.
00109  *  
00110  *  Please note your original filer must have ODD count of coefficients,
00111  *  allowing internal ADC circuitry to mirror the coefficients properly.
00112  *  
00113  *  In case of usage lower count of coeffs than 56, please make sure, that
00114  *  the variable 'count_of_active_coeffs' bellow, carries the correct number
00115  *  of coeficients, allowing to fill the rest of the coeffs by zeroes
00116  *
00117  *  Default coeffs:
00118  **/
00119 const uint8_t count_of_active_coeffs = 56;
00120 
00121 const float programmable_FIR[56] = { 
00122         
00123     -9.53674E-07,
00124      3.33786E-06,
00125      5.48363E-06,
00126    - 5.48363E-06,
00127    - 1.54972E-05,
00128      5.24521E-06,
00129      3.40939E-05,
00130      3.57628E-06,
00131    - 6.17504E-05,
00132    - 3.05176E-05,
00133      9.56059E-05,
00134      8.74996E-05,
00135    - 0.000124693,
00136    - 0.000186205,
00137      0.000128746,
00138      0.000333548,
00139    - 7.70092E-05,
00140    - 0.000524998,
00141    - 6.98566E-05,
00142      0.000738144,
00143      0.000353813,
00144    - 0.000924349,
00145    - 0.000809193,
00146      0.001007795,
00147      0.00144887,
00148    - 0.000886202,
00149    - 0.002248049,
00150      0.000440598,
00151      0.00312829,
00152      0.000447273,
00153    - 0.00394845,
00154    - 0.001870632,
00155      0.004499197,
00156      0.003867388,
00157    - 0.004512072,
00158    - 0.006392241,
00159      0.003675938,
00160      0.009288311,
00161    - 0.001663446,
00162    - 0.012270451,
00163    - 0.001842737,
00164      0.014911652,
00165      0.007131577,
00166    - 0.016633987,
00167    - 0.014478207,
00168      0.016674042,
00169      0.024231672,
00170    - 0.013958216,
00171    - 0.037100792,
00172      0.006659508,
00173      0.055086851,
00174      0.009580374,
00175    - 0.085582495,
00176    - 0.052207232,
00177      0.177955151,
00178      0.416601658,
00179 };
00180     
00181 #ifdef __cplusplus 
00182 }                 
00183 #endif // __cplusplus   
00184 #endif // !_INIT_PARAMS_H_
00185 
00186