Example program for EVAL-CN0535-FMCZ
Dependencies: platform_drivers AD77681
cn0535_init_params.h
- Committer:
- jngarlitos
- Date:
- 2021-03-15
- Revision:
- 1:f3b5e79a8488
- Child:
- 2:998f1de78dae
File content as of revision 1:f3b5e79a8488:
#ifndef _CN0353_INIT_PARAMS_H_ #define _CN0353_INIT_PARAMS_H_ #ifdef __cplusplus extern "C" { #endif #include <mbed.h> #include <stdint.h> #include "platform_drivers.h" #include "platform_support.h" #include "spi_extra.h" #include "gpio.h" #include "ad77681.h" /******************************************************************************/ /********************** Macros and Constants Definitions **********************/ /******************************************************************************/ #define DRDY_PIN D2 #define ADC_RST_PIN D3 // Init params // Init SPI extra parameters structure mbed_spi_init_param spi_init_extra_params = { .spi_clk_pin = SPI_SCK, .spi_miso_pin = SPI_MISO, .spi_mosi_pin = SPI_MOSI }; // SPI bus init parameters spi_init_param spi_params = { 20000000, // SPI Speed SPI_CS, // SPI CS select index SPI_MODE_3, // SPI Mode &spi_init_extra_params, // SPI extra configurations }; // Initial parameters for the ADC AD7768-1 ad77681_init_param init_params = { spi_params, // SPI parameters AD77681_ECO, // power_mode AD77681_MCLK_DIV_16, // mclk_div AD77681_CONV_CONTINUOUS, // conv_mode AD77681_AIN_SHORT, // diag_mux_sel false, // conv_diag_sel AD77681_CONV_24BIT, // conv_len AD77681_NO_CRC, // crc_sel 0, // status bit AD77681_VCM_HALF_VCC, // VCM setup AD77681_AINn_ENABLED, // AIN- precharge buffer AD77681_AINp_ENABLED, // AIN+ precharge buffer AD77681_BUFn_ENABLED, // REF- buffer AD77681_BUFp_ENABLED, // REF+ buffer AD77681_FIR, // FIR Filter AD77681_SINC5_FIR_DECx32, // Decimate by 32 0, // OS ratio of SINC3 4096, // Reference voltage 16384, // MCLK in kHz 32000, // Sample rate in Hz 1, // Data frame bytes }; // Inital params of a GPIO, to which the DRDY signal of the ADC is connected gpio_desc gpio_drdy = { DRDY_PIN, // GPIO pin NULL, }; // Inital params of a GPIO, to which the RST signal of the ADC is connected gpio_desc gpio_reset = { ADC_RST_PIN, // GPIO pin NULL, }; /* * User-defined coefficients for programmable FIR filter, max 56 coeffs * * Please note that, inserted coefficiets will be mirrored afterwards, * so you must insert only one half of all the coefficients. * * Please note your original filer must have ODD count of coefficients, * allowing internal ADC circuitry to mirror the coefficients properly. * * In case of usage lower count of coeffs than 56, please make sure, that * the variable 'count_of_active_coeffs' bellow, carries the correct number * of coeficients, allowing to fill the rest of the coeffs by zeroes * * Default coeffs: **/ const uint8_t count_of_active_coeffs = 56; const float programmable_FIR[56] = { -0.000064967, 0.000216258, 0.000437060, 0.000513474, 0.000396842, 0.000097234, -0.000304613, -0.000667916, -0.000831172, -0.000674257, -0.000182842, 0.000514726, 0.001164754, 0.001468219, 0.001203813, 0.000347908, -0.000865494, -0.001987698, -0.002506034, -0.002058142, -0.000626378, 0.001379936, 0.003214906, 0.004053861, 0.003337280, 0.001065705, -0.002092961, -0.004965216, -0.006281280, -0.005199392, -0.001740302, 0.003068791, 0.007451037, 0.009496076, 0.007936363, 0.002786057, -0.004444805, -0.011117611, -0.014356987, -0.012188594, -0.004503385, 0.006564770, 0.017091120, 0.022597229, 0.019721226, 0.007756722, -0.010529983, -0.029205128, -0.040639396, -0.037782094, -0.016555659, 0.022417307, 0.073383876, 0.126572621, 0.170602851, 0.195514282, }; #ifdef __cplusplus } #endif // __cplusplus #endif // !_CN0353_INIT_PARAMS_H_