ADC Management Task.

#include <stddef.h>
#include <stdio.h>
#include <avr32/io.h>
#include "compiler.h"
#include "board.h"
#include "gpio.h"
#include "pm_uc3c.h"
#include "scif_uc3c.h"
#include "adcifa.h"
#include "pdca.h"
#include "adc_task.h"
#include "sysclk.h"
#include "dsp.h"
#include "conf_demo.h"

Macros
#define	ADC_TRIGGER_SYNC_MIN 1

#define	ADC_TRIGGER_SYNC_NONE 0

#define	ADC_TRIGGER_SYNC_ORDER 2

#define	AVR32_ADCIFA_IRQ_GROUP 36
	The ADCIFA window monitor interrupt handler. More...

Functions
void	adc_task (void)
	ADC Task: More...

void	adc_task_init (void)
	main function : initialization and loop to display ADC values More...

	ISR (adc_int_window_handler, AVR32_ADCIFA_IRQ_GROUP, 0)

	ISR (pdca_int_handler_seq0, AVR32_PDCA_IRQ_GROUP0, 0)
	The PDCA interrupt handler. More...

void	pdca_init (void)
	Configure the PDCA and register its interrupt pdca_int_handler. More...

Variables
adcifa_opt_t	adc_config_t

adcifa_sequencer_conversion_opt_t	adc_conversion_sequencer0_t [ADC_NUMBER_OF_CONV_SEQ0]

adcifa_sequencer_conversion_opt_t	adc_conversion_sequencer1_t [ADC_NUMBER_OF_CONV_SEQ1]

adcifa_sequencer_opt_t	adc_sequencer0_config_t

adcifa_sequencer_opt_t	adc_sequencer1_config_t

int16_t	adc_values_seq0 [ADC_PDCA_CHANNEL_NUMBER_OF_SAMPLES]

int16_t	adc_values_seq1 [ADC_NUMBER_OF_CONV_SEQ1]

volatile adcifa_window_monitor_opt_t	adc_window_config_t

volatile avr32_adcifa_t *	adcifa = &AVR32_ADCIFA

volatile bool	flag_end_of_acquisition = false

static const pdca_channel_options_t	pdca_channel0_config_t

volatile int16_t	potentiometer_value

A_ALIGNED dsp16_t	signalin_gui [GUI_BUFFER_LENGTH]

volatile float	signalin_remote [GUI_BUFFER_LENGTH]

volatile int32_t	trigger_process_state = ADC_TRIGGER_SYNC_NONE

#define ADC_TRIGGER_SYNC_MIN 1

Referenced by adc_task(), adc_task_init(), and ISR().

#define ADC_TRIGGER_SYNC_NONE 0

#define ADC_TRIGGER_SYNC_ORDER 2

Referenced by ISR().

#define AVR32_ADCIFA_IRQ_GROUP 36

The ADCIFA window monitor interrupt handler.

void adc_task ( void )

ADC Task:

Check if DMA Transfer is completed
Update Buffer Signal
Manage the trigger search feature

References ADC_NUMBER_OF_CONV_SEQ0, ADC_NUMBER_OF_CONV_SEQ1, ADC_SCALE_GAIN, ADC_SCALE_OFFSET, ADC_TRIGGER_SYNC_MIN, adc_values_seq0, adc_values_seq1, adcifa, adcifa_configure_window_monitor(), adcifa_enable_interrupt(), adcifa_get_values_from_sequencer(), ADCIFA_SEQ0, ADCIFA_SEQ1, adcifa_start_sequencer(), ADCIFA_STATUS_COMPLETED, ADCIFA_WINDOW_MODE_BELOW, flag_end_of_acquisition, GUI_BUFFER_LENGTH, adcifa_window_monitor_opt_t::high_threshold, i, j, adcifa_window_monitor_opt_t::low_threshold, adcifa_window_monitor_opt_t::mode, potentiometer_value, signalin_gui, signalin_remote, temp, and trigger_process_state.

Referenced by main().

void adc_task_init ( void )

ISR	(	adc_int_window_handler	,
		AVR32_ADCIFA_IRQ_GROUP	,
		0
	)

References ADC_PDCA_CHANNEL_SEQ0, ADC_TRIGGER_SYNC_MIN, ADC_TRIGGER_SYNC_ORDER, adcifa, adcifa_clear_interrupt(), adcifa_configure_window_monitor(), adcifa_disable_interrupt(), ADCIFA_SEQ0, ADCIFA_WINDOW_MODE_ABOVE, gpio_clr_gpio_pin(), adcifa_window_monitor_opt_t::high_threshold, adcifa_window_monitor_opt_t::low_threshold, adcifa_window_monitor_opt_t::mode, pdca_enable(), potentiometer_value, and trigger_process_state.

ISR	(	pdca_int_handler_seq0	,
		AVR32_PDCA_IRQ_GROUP0	,
		0
	)

The PDCA interrupt handler.

The handler disables the PDCA transfer. The interrupt will happen each time the transfer is completed.

References ADC_PDCA_CHANNEL_SEQ0, flag_end_of_acquisition, gpio_set_gpio_pin(), pdca_disable(), pdca_enable_interrupt_transfer_complete(), and pdca_init_channel().

void pdca_init ( void )

Configure the PDCA and register its interrupt pdca_int_handler.

References ADC_PDCA_CHANNEL_SEQ0, cpu_irq_restore(), cpu_irq_save(), irq_register_handler, pdca_enable_interrupt_transfer_complete(), and pdca_init_channel().

Referenced by adc_task_init().

adcifa_opt_t adc_config_t

Initial value:

= {
    .frequency                  = 1000000,            
    .reference_source           = ADCIFA_REF06VDD,    
    .sample_and_hold_disable    = false,              
    .single_sequencer_mode      = false,              
    .free_running_mode_enable   = false,              
    .sleep_mode_enable          = false,              
    .mux_settle_more_time       = false               
}

Referenced by main().

adcifa_sequencer_conversion_opt_t adc_conversion_sequencer0_t[ADC_NUMBER_OF_CONV_SEQ0]

Initial value:

= {
    { 
        .channel_p = ADC_EXT_INPUT_INP,             
        .channel_n = ADC_EXT_INPUT_INN,             
        .gain      = ADCIFA_SHG_1                   
    }
}

Referenced by adc_task_init().

adcifa_sequencer_conversion_opt_t adc_conversion_sequencer1_t[ADC_NUMBER_OF_CONV_SEQ1]

Initial value:

= {
    { 
        .channel_p = ADC_POTENTIOMETER_INP,         
        .channel_n = ADC_POTENTIOMETER_INN,         
        .gain      = ADCIFA_SHG_1                   
    },
    { 
        .channel_p = ADC_POTENTIOMETER_INP,         
        .channel_n = ADC_POTENTIOMETER_INN,         
        .gain      = ADCIFA_SHG_1                   
    },
    { 
        .channel_p = ADC_POTENTIOMETER_INP,         
        .channel_n = ADC_POTENTIOMETER_INN,         
        .gain      = ADCIFA_SHG_1                   
    },
    { 
        .channel_p = ADC_POTENTIOMETER_INP,         
        .channel_n = ADC_POTENTIOMETER_INN,         
        .gain      = ADCIFA_SHG_1                   
    }
}

Referenced by adc_task_init().

adcifa_sequencer_opt_t adc_sequencer0_config_t

Initial value:

= {
    .convnb                     = ADC_NUMBER_OF_CONV_SEQ0,  
    .resolution                 = ADCIFA_SRES_10B,          
    .trigger_selection          = ADCIFA_TRGSEL_ITIMER,     
    .start_of_conversion        = ADCIFA_SOCB_ALLSEQ,       
    .sh_mode                    = ADCIFA_SH_MODE_STANDARD,  
    .half_word_adjustment       = ADCIFA_HWLA_NOADJ,        
    .software_acknowledge       = ADCIFA_SA_NO_EOS_SOFTACK  
}

adcifa_sequencer_opt_t adc_sequencer1_config_t

Initial value:

= {
    .convnb                     = ADC_NUMBER_OF_CONV_SEQ1,  
    .resolution                 = ADCIFA_SRES_10B,          
    .trigger_selection          = ADCIFA_TRGSEL_SOFT,       
    .start_of_conversion        = ADCIFA_SOCB_ALLSEQ,       
    .sh_mode                    = ADCIFA_SH_MODE_STANDARD,  
    .half_word_adjustment       = ADCIFA_HWLA_NOADJ,        
    .software_acknowledge       = ADCIFA_SA_NO_EOS_SOFTACK  
}

int16_t adc_values_seq0[ADC_PDCA_CHANNEL_NUMBER_OF_SAMPLES]

Referenced by adc_process_task(), and adc_task().

int16_t adc_values_seq1[ADC_NUMBER_OF_CONV_SEQ1]

Referenced by adc_process_task(), and adc_task().

volatile adcifa_window_monitor_opt_t adc_window_config_t

Initial value:

= {
    .mode = ADCIFA_WINDOW_MODE_ABOVE,               
    .low_threshold = 0,                             
    .high_threshold = 0,                            
    .source_index = ADC_NUMBER_OF_CONV_SEQ0-1       
}

volatile avr32_adcifa_t* adcifa = &AVR32_ADCIFA

Referenced by adc_process_init(), adc_process_task(), adc_task(), adc_task_init(), and ISR().

volatile bool flag_end_of_acquisition = false

Referenced by adc_task(), and ISR().

const pdca_channel_options_t pdca_channel0_config_t

static

Initial value:

= {
    .addr = (void *)adc_values_seq0,                
    .pid = AVR32_ADCIFA_PDCA_ID_RX_CH0,             
    .size = ADC_PDCA_CHANNEL_NUMBER_OF_SAMPLES,     
    .r_addr = NULL,                                 
    .r_size = 0,                                    
    .transfer_size = PDCA_TRANSFER_SIZE_HALF_WORD   
}

volatile int16_t potentiometer_value

Referenced by adc_task(), gui_task(), and ISR().

A_ALIGNED dsp16_t signalin_gui[GUI_BUFFER_LENGTH]

Referenced by adc_task(), and gui_task().

volatile float signalin_remote[GUI_BUFFER_LENGTH]

Referenced by adc_task(), and noise_task().

volatile int32_t trigger_process_state = ADC_TRIGGER_SYNC_NONE

Referenced by adc_task(), adc_task_init(), and ISR().

Microchip® Advanced Software Framework

Macros

Functions

Variables