/* ADC TEST

Copyright (C) 2010             Carlos Camargo  cicamargoba@unal.edu.co
                               Andres Calderon andres.calderon@emqbit.com
                               
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include <stdio.h>
#include <unistd.h>

#include "jz47xx_gpio.h"
#include "jz47xx_mmap.h"
#include "jz_adc_peripheral.h"

#define TEST_PORT JZ_GPIO_PORT_B
#define TEST_PIN  26

int
main ()
{
	int i,j;
	JZ_PIO *pio;
	JZ_REG *virt_addr;

	pio = jz_gpio_map (TEST_PORT);
	jz_gpio_as_func (pio, TEST_PIN, 0);

	virt_addr = (JZ_REG *) (jz_mmap (0x13010000) + 0x18);

	if (*virt_addr != 0x0FFF7700)
	{                           
	  	*virt_addr = 0x0FFF7700;
	  	printf ("Configuring CS2 32 bits and 0 WS: %08X\n", *virt_addr);
	}
	else
		printf ("CS2, already configured: %08X\n", *virt_addr);

	virt_addr = (JZ_REG *) jz_mmap (0x14000000);

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

	/****************Configure ADC register on FPGA RAM memory*****************/
    uchar LENB = 0x01; // 1 read/cmd
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_SPI_CLKDIV);
	usleep (100);
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_FAST_CONV);
	usleep (100);
	printf("\nADC in Fast Convertion Mode (10us) and Fs=9.8KHz (Min)\n");

    LENB = ADC_MAX_BUFFER; // 254 read/cmd
    
	/******************************* TEST 1 ***********************************/
	printf("\nINIT TEST1: Autoselft {(Vref+) - (Vref-)}/2 -> Return 0x0200 \n");
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_1);
	usleep (100);
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_1);
	printf("[%08X]", virt_addr[0]);
	while(jz_adc_check_buffer(virt_addr))
	{
    	printf("[%08X]-", virt_addr[0]);
    	fflush (stdout);
	    usleep (10000);
	}
	for(i=1; i< LENB/2+1; i++)
		printf("[%08X]", virt_addr[i]);

	/******************************* TEST 2 ***********************************/
	printf("\n\nINIT TEST2: Autoselft (Vref-) -> Return 0x0000 \n");
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_2);
	usleep (100);
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_2);
	while(jz_adc_check_buffer(virt_addr)){usleep (100);}
	for(i=1; i< LENB/2+1; i++)
		printf("[%08X]", virt_addr[i]);
		
	/******************************* TEST 3 ***********************************/
	printf("\n\nINIT TEST3: Autoselft (Vref+) -> Return 0x03FF \n");
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_AUTOSELFT_3);
	usleep (100);
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_READ_AUTOSELFT_3);
	while(jz_adc_check_buffer(virt_addr)){usleep (100);}
	for(i=1; i< LENB/2+1; i++)
		printf("[%08X]", virt_addr[i]);		

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

	LENB = 0x01;	// 1 read/cmd
	jz_adc_config(virt_addr, LENB, ADC_SPI_CLKDIV_MAX, ADC_CMD_SET_POWER_DOWN);
	printf("\nADC in Power Down Mode \n");

  return 0;
}