Analog Devices / Mbed OS EVAL-CN0535-FMCZ

Example program for EVAL-CN0535-FMCZ

Dependencies:   platform_drivers AD77681

cn0535_init_params.h@1:f3b5e79a8488, 2021-03-15 (annotated)

Committer:
jngarlitos
Date:
Mon Mar 15 07:12:29 2021 +0000
Revision:
1:f3b5e79a8488
Child:
2:998f1de78dae
Initial Commit for EVAL-CN0535-FMCZ Program Files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jngarlitos 1:f3b5e79a8488 1 #ifndef _CN0353_INIT_PARAMS_H_
jngarlitos 1:f3b5e79a8488 2 #define _CN0353_INIT_PARAMS_H_
jngarlitos 1:f3b5e79a8488 3
jngarlitos 1:f3b5e79a8488 4 #ifdef __cplusplus
jngarlitos 1:f3b5e79a8488 5 extern "C"
jngarlitos 1:f3b5e79a8488 6 {
jngarlitos 1:f3b5e79a8488 7 #endif
jngarlitos 1:f3b5e79a8488 8 #include <mbed.h>
jngarlitos 1:f3b5e79a8488 9 #include <stdint.h>
jngarlitos 1:f3b5e79a8488 10 #include "platform_drivers.h"
jngarlitos 1:f3b5e79a8488 11 #include "platform_support.h"
jngarlitos 1:f3b5e79a8488 12 #include "spi_extra.h"
jngarlitos 1:f3b5e79a8488 13 #include "gpio.h"
jngarlitos 1:f3b5e79a8488 14 #include "ad77681.h"
jngarlitos 1:f3b5e79a8488 15
jngarlitos 1:f3b5e79a8488 16
jngarlitos 1:f3b5e79a8488 17 /******************************************************************************/
jngarlitos 1:f3b5e79a8488 18 /********************** Macros and Constants Definitions **********************/
jngarlitos 1:f3b5e79a8488 19 /******************************************************************************/
jngarlitos 1:f3b5e79a8488 20
jngarlitos 1:f3b5e79a8488 21
jngarlitos 1:f3b5e79a8488 22 #define DRDY_PIN D2
jngarlitos 1:f3b5e79a8488 23 #define ADC_RST_PIN D3
jngarlitos 1:f3b5e79a8488 24
jngarlitos 1:f3b5e79a8488 25 // Init params
jngarlitos 1:f3b5e79a8488 26
jngarlitos 1:f3b5e79a8488 27 // Init SPI extra parameters structure
jngarlitos 1:f3b5e79a8488 28 mbed_spi_init_param spi_init_extra_params = {
jngarlitos 1:f3b5e79a8488 29 .spi_clk_pin = SPI_SCK,
jngarlitos 1:f3b5e79a8488 30 .spi_miso_pin = SPI_MISO,
jngarlitos 1:f3b5e79a8488 31 .spi_mosi_pin = SPI_MOSI
jngarlitos 1:f3b5e79a8488 32 };
jngarlitos 1:f3b5e79a8488 33 // SPI bus init parameters
jngarlitos 1:f3b5e79a8488 34 spi_init_param spi_params = {
jngarlitos 1:f3b5e79a8488 35 20000000, // SPI Speed
jngarlitos 1:f3b5e79a8488 36 SPI_CS, // SPI CS select index
jngarlitos 1:f3b5e79a8488 37 SPI_MODE_3, // SPI Mode
jngarlitos 1:f3b5e79a8488 38 &spi_init_extra_params, // SPI extra configurations
jngarlitos 1:f3b5e79a8488 39 };
jngarlitos 1:f3b5e79a8488 40
jngarlitos 1:f3b5e79a8488 41 // Initial parameters for the ADC AD7768-1
jngarlitos 1:f3b5e79a8488 42 ad77681_init_param init_params = {
jngarlitos 1:f3b5e79a8488 43
jngarlitos 1:f3b5e79a8488 44 spi_params, // SPI parameters
jngarlitos 1:f3b5e79a8488 45 AD77681_ECO, // power_mode
jngarlitos 1:f3b5e79a8488 46 AD77681_MCLK_DIV_16, // mclk_div
jngarlitos 1:f3b5e79a8488 47 AD77681_CONV_CONTINUOUS, // conv_mode
jngarlitos 1:f3b5e79a8488 48 AD77681_AIN_SHORT, // diag_mux_sel
jngarlitos 1:f3b5e79a8488 49 false, // conv_diag_sel
jngarlitos 1:f3b5e79a8488 50 AD77681_CONV_24BIT, // conv_len
jngarlitos 1:f3b5e79a8488 51 AD77681_NO_CRC, // crc_sel
jngarlitos 1:f3b5e79a8488 52 0, // status bit
jngarlitos 1:f3b5e79a8488 53 AD77681_VCM_HALF_VCC, // VCM setup
jngarlitos 1:f3b5e79a8488 54 AD77681_AINn_ENABLED, // AIN- precharge buffer
jngarlitos 1:f3b5e79a8488 55 AD77681_AINp_ENABLED, // AIN+ precharge buffer
jngarlitos 1:f3b5e79a8488 56 AD77681_BUFn_ENABLED, // REF- buffer
jngarlitos 1:f3b5e79a8488 57 AD77681_BUFp_ENABLED, // REF+ buffer
jngarlitos 1:f3b5e79a8488 58 AD77681_FIR, // FIR Filter
jngarlitos 1:f3b5e79a8488 59 AD77681_SINC5_FIR_DECx32, // Decimate by 32
jngarlitos 1:f3b5e79a8488 60 0, // OS ratio of SINC3
jngarlitos 1:f3b5e79a8488 61 4096, // Reference voltage
jngarlitos 1:f3b5e79a8488 62 16384, // MCLK in kHz
jngarlitos 1:f3b5e79a8488 63 32000, // Sample rate in Hz
jngarlitos 1:f3b5e79a8488 64 1, // Data frame bytes
jngarlitos 1:f3b5e79a8488 65 };
jngarlitos 1:f3b5e79a8488 66
jngarlitos 1:f3b5e79a8488 67 // Inital params of a GPIO, to which the DRDY signal of the ADC is connected
jngarlitos 1:f3b5e79a8488 68 gpio_desc gpio_drdy = {
jngarlitos 1:f3b5e79a8488 69 DRDY_PIN, // GPIO pin
jngarlitos 1:f3b5e79a8488 70 NULL,
jngarlitos 1:f3b5e79a8488 71 };
jngarlitos 1:f3b5e79a8488 72
jngarlitos 1:f3b5e79a8488 73 // Inital params of a GPIO, to which the RST signal of the ADC is connected
jngarlitos 1:f3b5e79a8488 74 gpio_desc gpio_reset = {
jngarlitos 1:f3b5e79a8488 75 ADC_RST_PIN, // GPIO pin
jngarlitos 1:f3b5e79a8488 76 NULL,
jngarlitos 1:f3b5e79a8488 77 };
jngarlitos 1:f3b5e79a8488 78
jngarlitos 1:f3b5e79a8488 79 /*
jngarlitos 1:f3b5e79a8488 80 * User-defined coefficients for programmable FIR filter, max 56 coeffs
jngarlitos 1:f3b5e79a8488 81 *
jngarlitos 1:f3b5e79a8488 82 * Please note that, inserted coefficiets will be mirrored afterwards,
jngarlitos 1:f3b5e79a8488 83 * so you must insert only one half of all the coefficients.
jngarlitos 1:f3b5e79a8488 84 *
jngarlitos 1:f3b5e79a8488 85 * Please note your original filer must have ODD count of coefficients,
jngarlitos 1:f3b5e79a8488 86 * allowing internal ADC circuitry to mirror the coefficients properly.
jngarlitos 1:f3b5e79a8488 87 *
jngarlitos 1:f3b5e79a8488 88 * In case of usage lower count of coeffs than 56, please make sure, that
jngarlitos 1:f3b5e79a8488 89 * the variable 'count_of_active_coeffs' bellow, carries the correct number
jngarlitos 1:f3b5e79a8488 90 * of coeficients, allowing to fill the rest of the coeffs by zeroes
jngarlitos 1:f3b5e79a8488 91 *
jngarlitos 1:f3b5e79a8488 92 * Default coeffs:
jngarlitos 1:f3b5e79a8488 93 **/
jngarlitos 1:f3b5e79a8488 94 const uint8_t count_of_active_coeffs = 56;
jngarlitos 1:f3b5e79a8488 95
jngarlitos 1:f3b5e79a8488 96 const float programmable_FIR[56] = {
jngarlitos 1:f3b5e79a8488 97
jngarlitos 1:f3b5e79a8488 98 -0.000064967,
jngarlitos 1:f3b5e79a8488 99 0.000216258,
jngarlitos 1:f3b5e79a8488 100 0.000437060,
jngarlitos 1:f3b5e79a8488 101 0.000513474,
jngarlitos 1:f3b5e79a8488 102 0.000396842,
jngarlitos 1:f3b5e79a8488 103 0.000097234,
jngarlitos 1:f3b5e79a8488 104 -0.000304613,
jngarlitos 1:f3b5e79a8488 105 -0.000667916,
jngarlitos 1:f3b5e79a8488 106 -0.000831172,
jngarlitos 1:f3b5e79a8488 107 -0.000674257,
jngarlitos 1:f3b5e79a8488 108 -0.000182842,
jngarlitos 1:f3b5e79a8488 109 0.000514726,
jngarlitos 1:f3b5e79a8488 110 0.001164754,
jngarlitos 1:f3b5e79a8488 111 0.001468219,
jngarlitos 1:f3b5e79a8488 112 0.001203813,
jngarlitos 1:f3b5e79a8488 113 0.000347908,
jngarlitos 1:f3b5e79a8488 114 -0.000865494,
jngarlitos 1:f3b5e79a8488 115 -0.001987698,
jngarlitos 1:f3b5e79a8488 116 -0.002506034,
jngarlitos 1:f3b5e79a8488 117 -0.002058142,
jngarlitos 1:f3b5e79a8488 118 -0.000626378,
jngarlitos 1:f3b5e79a8488 119 0.001379936,
jngarlitos 1:f3b5e79a8488 120 0.003214906,
jngarlitos 1:f3b5e79a8488 121 0.004053861,
jngarlitos 1:f3b5e79a8488 122 0.003337280,
jngarlitos 1:f3b5e79a8488 123 0.001065705,
jngarlitos 1:f3b5e79a8488 124 -0.002092961,
jngarlitos 1:f3b5e79a8488 125 -0.004965216,
jngarlitos 1:f3b5e79a8488 126 -0.006281280,
jngarlitos 1:f3b5e79a8488 127 -0.005199392,
jngarlitos 1:f3b5e79a8488 128 -0.001740302,
jngarlitos 1:f3b5e79a8488 129 0.003068791,
jngarlitos 1:f3b5e79a8488 130 0.007451037,
jngarlitos 1:f3b5e79a8488 131 0.009496076,
jngarlitos 1:f3b5e79a8488 132 0.007936363,
jngarlitos 1:f3b5e79a8488 133 0.002786057,
jngarlitos 1:f3b5e79a8488 134 -0.004444805,
jngarlitos 1:f3b5e79a8488 135 -0.011117611,
jngarlitos 1:f3b5e79a8488 136 -0.014356987,
jngarlitos 1:f3b5e79a8488 137 -0.012188594,
jngarlitos 1:f3b5e79a8488 138 -0.004503385,
jngarlitos 1:f3b5e79a8488 139 0.006564770,
jngarlitos 1:f3b5e79a8488 140 0.017091120,
jngarlitos 1:f3b5e79a8488 141 0.022597229,
jngarlitos 1:f3b5e79a8488 142 0.019721226,
jngarlitos 1:f3b5e79a8488 143 0.007756722,
jngarlitos 1:f3b5e79a8488 144 -0.010529983,
jngarlitos 1:f3b5e79a8488 145 -0.029205128,
jngarlitos 1:f3b5e79a8488 146 -0.040639396,
jngarlitos 1:f3b5e79a8488 147 -0.037782094,
jngarlitos 1:f3b5e79a8488 148 -0.016555659,
jngarlitos 1:f3b5e79a8488 149 0.022417307,
jngarlitos 1:f3b5e79a8488 150 0.073383876,
jngarlitos 1:f3b5e79a8488 151 0.126572621,
jngarlitos 1:f3b5e79a8488 152 0.170602851,
jngarlitos 1:f3b5e79a8488 153 0.195514282,
jngarlitos 1:f3b5e79a8488 154
jngarlitos 1:f3b5e79a8488 155 };
jngarlitos 1:f3b5e79a8488 156
jngarlitos 1:f3b5e79a8488 157 #ifdef __cplusplus
jngarlitos 1:f3b5e79a8488 158 }
jngarlitos 1:f3b5e79a8488 159 #endif // __cplusplus
jngarlitos 1:f3b5e79a8488 160 #endif // !_CN0353_INIT_PARAMS_H_
jngarlitos 1:f3b5e79a8488 161