nn-usb-fpga/Examples/ADC/QT_src/ADCw.cpp

#include "ADCw.h"

ADCw::ADCw()
{
	ADCBuffer = jz_adc_init();
	/*************************Clean FPGA RAM memory****************************/
	for (int i = 0; i < 512; i++)     //RAMB16_s9_s9 has 2048 bytes 8-bit
	{
		ADCBuffer[i] = 0x00000000; //Clean 4 register by cicle
	}
}

void ADCw::testADC()
{
	/****************Configure ADC register on FPGA RAM memory*****************/
	jz_adc_config(ADCBuffer, 0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_SPI_CLKDIV);
	usleep (1000);
	jz_adc_config(ADCBuffer, 0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_FAST_CONV);
	usleep (1000);
	printf("\nADC in Fast Convertion Mode (10us) and Fs=9.8KHz (Min)\n");

	int LENB = 0xFE; // 254 read/cmd

	/******************************* TEST 1 ***********************************/
	printf("\nINIT TEST1: Autoselft {(Vref+) - (Vref-)}/2 -> Return 0x0200 \n");
	jz_adc_config(ADCBuffer, 0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_1);
	usleep (1000);
	jz_adc_config(ADCBuffer, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_1);
	printf("[%08X]", ADCBuffer[0]);fflush (stdout);
	while(jz_adc_check_buffer(ADCBuffer)){usleep (10);}
	for(int i=1; i< LENB/2+1; i++)
		printf("[%08X]", ADCBuffer[i]);
	fflush (stdout);

	/******************************* TEST 2 ***********************************/
	printf("\n\nINIT TEST2: Autoselft (Vref-) -> Return 0x0000 \n");
	jz_adc_config(ADCBuffer, 0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_2);
	usleep (1000);
	jz_adc_config(ADCBuffer, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_2);
	printf("[%08X]", ADCBuffer[0]);fflush (stdout);
	while(jz_adc_check_buffer(ADCBuffer)){usleep (10);}
	for(int i=1; i< LENB/2+1; i++)
		printf("[%08X]", ADCBuffer[i]);
	fflush (stdout);

	/******************************* TEST 3 ***********************************/
	printf("\n\nINIT TEST3: Autoselft (Vref+) -> Return 0x03FF \n");
	jz_adc_config(ADCBuffer, 0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_3);
	usleep (1000);
	jz_adc_config(ADCBuffer, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_3);
	printf("[%08X]", ADCBuffer[0]);fflush (stdout);
	while(jz_adc_check_buffer(ADCBuffer)){usleep (10);}
	for(int i=1; i< LENB/2+1; i++)
		printf("[%08X]", ADCBuffer[i]);
	fflush (stdout);

	printf("\n\nTESTS complete\n");
}

void ADCw::powerDownADC()
{
	jz_adc_config(ADCBuffer,  0x01, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_POWER_DOWN);
	printf("\nADC in Power Down Mode \n");
}

JZ_REG* ADCw::takeSamplesADC(int LENB, uchar CLKDIV, int CHANNEL)
{
	jz_adc_config(ADCBuffer, 0x01, CLKDIV, ADC_CMD_SET_CHANNEL0+CHANNEL);
	usleep (1000);
	jz_adc_config(ADCBuffer, LENB, CLKDIV, ADC_CMD_READ_CHANNEL0+CHANNEL);
	//while(jz_adc_check_buffer(ADCBuffer)){usleep (400000);printf("[%08X]", ADCBuffer[0]);fflush (stdout);}
	while(jz_adc_check_buffer(ADCBuffer)){usleep (10);}
	return ADCBuffer;
}