Adc.h

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#include "stdint.h"
#include <stdbool.h>
/*! \file
 
 
*/
 
 
 
// CROSS INIZIO
 
//Registri/comandi per ADC
#define  ADC_communication_reg  0  //It is a NOP operation
 
#define  ADC_to_be_added_to_read  0x40   //This must be added to the address below for reading
#define  ADC_data_reg  0x08     // Conversione is read from this 24 bit register
#define  ADC_range_reg  0x28 //set-up register for input range and single/continuous conversion
#define  ADC_Conversion_time_reg 0x30
#define  ADC_mode_reg  0x38 //Conversion mode, resolution, dumpp
#define  ADC_mode_reg_ch0  0x38 //Conversion mode, resolution, dumpp for ADC CH0
#define  ADC_mode_reg_ch1  ADC_mode_reg_ch0 + 2 //Conversion mode, resolution, dumpp for ADC CH1
#define  ADC_channel_data_reg  0x08 //Conversion mode, resolution, dumpp
#define  ADC_full_scale_correction_register 0x18
#define  ADC_offset_correction_register 0x10
#define ADC_channel_conversion_time_FW_ch0_register 0x30
#define ADC_channel_conversion_time_FW_ch1_register ADC_channel_conversion_time_FW_ch0_register + 2
 
#define ADC_max_resolution 0xFF
#define  ADC_ZeroScaleCalibration_com  0x82  //ADC Zero-Scale Self-Calibration, Need to wait for end of calibration at RDY 
#define ADC_Channel_zero_scale_calibration 12
#define ADC_Channel_full_scale_calibration 14
#define ADC_idle_com 0x02       //Single conversion mode, 24 bit, waiting to measure
#define ADC_mode_reg_set_single_24bit 0x42 //0x40: single conversion, 0x02: 24 bit resolution
#define read_from_CH0 0x48
#define read_from_CH1 (read_from_CH0+2)
 
/*! Coefficients for reading nodes.
Ri is in series to the source noise to measure and to RA, that is in series to the buffer and connected to RB from buffer to GND. 
We now use the LMP7702 as input buffer. It is a MOS input OA and does not show inpt current. Its input offset is quite negligible,
but we measure it since the ADC contribution sums to it. Let's call it Vof.
The voltage Vi to mesure is therefore:
Vi= (Ri +RA+RB)/RB (Vm - Vof), where Vm is the voltage read from the ADC when the input is connected.
Vi= Vm - Vof + (Ri +RA)/RB (Vm - Vof). So the numerator to consider is Ri+RA while the denominator RB.
A special case is when the detector bias is read since a further  attenuator is put before RA: RAp in series
to the source node to read and connected to RBp, from Rap to GND. 
If we call Ri'=RAp||RBp, then:
Vb= (RAp+RBp)/RBp (Vm-Vof + (Ri'+RA)/RB(Vm-Vof))
*/
#define ADC_numeratore_PGA 1  /*!< Partizione 8.2k con 82k all'ingresso del buffer: 8.2 /82 =1 /10 */
#define ADC_denominatore_PGA 10  /*!< .. */
#define ADC_numeratore_PreOut 91  /*!< Partizione 10k + 8.2k con 82k all'ingresso del buffer: (18.2)/82=91 /410 */
#define ADC_denominatore_PreOut 410  /*!< .. */
#define ADC_numeratore_PowerSupply 91  /*!<  Partizione 10k + 8.2k con 82k all'ingresso del buffer: (18.2)/82=91 /410 */                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
#define ADC_denominatore_PowerSupply 410  /*!< .. */
#define ADC_numeratore_Vreg 33  /*!< Partizione 62 + 8.2k con 82k all'ingresso del buffer: (0062+8.2)/82=8250 / 82000 =33 /328  */
#define ADC_denominatore_Vreg 328  /*!< .. */
#define ADC_numeratore_Bias_p 29  /*!< Abbiamo che RAp \'e 100k mentre RBp 16K, quindi (100+16)/16=58/8=29/4*/
#define ADC_denominatore_Bias_p 4  /*!< ... */
#define ADC_numeratore_Bias 11  /*!< Partizione 16k||100K + 8.2k con 82k all'ingresso del buffer: (8.2+(16||100))/82=21.99 /82=22/82=11/41   12/41 */
#define ADC_denominatore_Bias 41  /*!< .. */
#define ADC_numeratore_Res_fisse 10  /*!< Partizione 20k con 82k all'ingresso del buffer: 20/(82)=10 /41 */
#define ADC_denominatore_Res_fisse 41  /*!< .. */
#define ADC_molteplicita_node_to_read 6  /*!< .. */
 
/*!  
*\snippetlineno Adc.h struct_ADC_coefficiente_type
*/
//! <!-- [struct_ADC_coefficiente_type] -->
struct  ADC_coefficiente_type{
    int16_t numeratore;
    int16_t denominatore;   
};
//! <!-- [struct_ADC_coefficiente_type] -->
 
extern int32_t volatile  ADC_misura_fatta;
extern int32_t volatile ADC_external_measurement;
extern uint8_t volatile ADC_external_measured_node;
extern const struct ADC_coefficiente_type ADC_coefficiente[];
extern volatile uint8_t ADC_sleep_off; //if 0 ADC in sleep, ADC>1 ADC never sleep
extern volatile uint16_t ADC_medie_per_misura;  //< the number of ADC readings to average, the maximum is 400
extern volatile bool  ADC_non_leggi_lo_offset_se_true;
 
void instr_ADC_LETTURA_function(void);
int32_t ADC_lettura(uint8_t scheda_su_scheda_giu, uint8_t node_to_read, uint8_t cosa_fare);
 
void ADC_Sleep_fun(uint8_t up_down);
void ADC_selfcal_zero_scale(uint8_t up_down);
void ADC_Wakeup(uint8_t up_down);
signed  long  int ADC_lettura_24bit(char ADC_0_o_1, uint8_t up_down, uint8_t cosa_fare);
uint32_t ADC_lettura_registro(char ADC_0_o_1 /*0=ADC0, 1=ADC1*/, uint8_t up_down, uint8_t registro_ch0);
void  ADC_scrittura_registro(char ADC_0_o_1 /*0=ADC0, 1=ADC1*/, uint8_t up_down, uint8_t registro_ch0, int32_t value_to_write);
int ADC_compensazione_al_nodo(uint8_t line_to_read , int32_t lettura_ADC , int32_t lettura_offset);
//int32_t ADC_misura_differenziale(uint8_t scheda_su_scheda_giu , uint8_t nodo_da_leggere );
void ADC_sleep_ON_OFF(uint8_t up_down , uint8_t ON_OFF_NOP);
//int32_t ADC_misura_differenziale_con_media_at_PGA(uint8_t scheda_su_scheda_giu_, uint8_t preamplifier_externalADC_1_onboardADC_0, uint8_t indice, int32_t *preamplifier_error_voltage_at_the_moment);
int32_t ADC_misura_differenziale_con_media_generico(uint8_t scheda_su_scheda_giu_, uint8_t preamplifier_externalADC_1_onboardADC_0, uint8_t nodo_da_misurare, uint8_t differenziale1_single_0);
static int32_t ADC_misura_differenziale_single_ended(uint8_t scheda_su_scheda_giu , uint8_t nodo_da_leggere, uint8_t differenziale_1_single_0 );
 
 
 
//CROSS FINE
 
 
// ***********************ooOO Registers and most common registers contents for the used ADC AD7732 OOoo*****************
 
//SPI Registers for channel 0 of ADC
//Write register, add 0x40 for reading
extern unsigned int Radc_internal;
extern unsigned int Rmultiplexer;
extern unsigned char medie_ADC;
 
 
 
 
// More frequent ADC commands
 
//At register "ADC_mode_reg"
#define  ADC_power_down_com  0x70  //Shut down: power down and clock disabled
//#define  ADC_power_down_com  0x02  //Disable ADC power down
 
#define ADC_idle  0
 
 
 
 
 
//At register "ADC_range_reg"
 
#define  ADC_max_input_range_minus_10_to_10 0 //Range to +/- 10 V
 
//At register "ADC_Conversion_time_reg"
 
#define indice_Vbias 0
#define indice_PoerSupply 1
#define indice_100_ohm  2
#define indice_10_Kohm 3
#define indice_Vbias_extern 4
#define indice_default   5
 
#define  ADC_Conversion_time_chop_e_max_filter 0xFF // Best resolution
#define  ADC_Conversion_time_500micros_per_conversion  0x96 // Medium resolution
#define  ADC_Conversion_time_200micros_per_conversion  0x88 // Medium resolution
#define  ADC_Conversion_time_80micros_per_conversion  0x82 // Low resolution
 
#define ADC_reference_voltage 2.5e6  /*Voltage in microV*/
#define R_ref_10k   10e6 /* Resistance in mOhm*/
#define R_series_for_Vbias_extern  1800.0*18000.0/(1800.0+18000.0)*1000
#define R_series_for_Vbias  1500.0*8200.0/(1500.0+8200.0)*1000
#define R_series_for_PowerSupply  1e6  
 
#define RADC_tot 8*Radc_internal
 
#define Coefficiente_Vref_Vbias             Rmultiplexer + R_series_for_Vbias
#define Coefficiente_Vmeas_Vbias            RADC_tot + Coefficiente_Vref_Vbias
 
#define Coefficiente_Vref_Vbias_extern          Rmultiplexer + R_series_for_Vbias_extern
#define Coefficiente_Vmeas_Vbias_extern             RADC_tot + Coefficiente_Vref_Vbias_extern
 
#define Coefficiente_Vref_PowerSupply               Rmultiplexer + R_series_for_PowerSupply
#define Coefficiente_Vmeas_PowerSupply              RADC_tot + Coefficiente_Vref_PowerSupply
 
#define Coefficiente_Vref_default               Rmultiplexer + 100e3
#define Coefficiente_Vmeas_deafult              RADC_tot + Coefficiente_Vref_default
 
#define Coefficiente_Vref_100_ohm               Rmultiplexer + 100e3
#define Coefficiente_Vmeas_100_ohm              RADC_tot + Coefficiente_Vref_100_ohm
 
#define Coefficiente_Vref_10k_ohm               Rmultiplexer + 10000e3
#define Coefficiente_Vmeas_10k_ohm              RADC_tot + Coefficiente_Vref_10k_ohm
 
 
struct coeffcienti_misura_ADC_type{
    unsigned int coefficiente_Vmeas;
    unsigned int coefficiente_Vref;
    unsigned int partizione_per_1000;
} ;
 
extern struct coeffcienti_misura_ADC_type coeffcienti_misura_ADC[indice_default+1];
extern unsigned char coeffcienti_misura_ADC_nodi[];
 
// ADC.h 
 
 
 
void calibrazione_Resistenze_sterne_ADC(void);
 
int correzione_misura_ADC(char quali_coefficienti, int misura);
long long int divisione_di_gianlu( long long int Numeratore, long long int denominatore);