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_