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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of spreadspace avr utils.
*
* spreadspace avr utils 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 3 of the License, or
* any later version.
*
* spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <util/delay.h>
#include "util.h"
#include "led.h"
#include "usbio.h"
#include <stdio.h>
// Dustsensor defines:
#include <LUFA/Drivers/Peripheral/ADC.h>
#define PIN_HIGH(PORT, PIN) PORT |= (1 << PIN)
#define PIN_LOW(PORT, PIN) PORT &= ~(1 << PIN)
#define OP_SETBIT |=
#define OP_CLEARBIT &= ~
#define OP_CHECK &
#define PIN_SW(PORTDDRREG, PIN, OP) PORTDDRREG OP (1 << PIN)
#define HIGHv OP_SETBIT
#define LOWv OP_CLEARBIT
#define DUSTS_LED(OP) PIN_SW(PORTF, PF0, OP)
#define DUSTS_ADC_NUM 1
#define DUSTS_ADC_MUX_MASK ADC_CHANNEL1
void dusts_init(void)
{
DDRF = (1 << PF0);
DUSTS_LED(HIGHv);
//ADC_Init(ADC_SINGLE_CONVERSION);
ADC_Init(ADC_FREE_RUNNING);
ADC_SetupChannel (DUSTS_ADC_NUM);
}
int16_t dusts_measure(void) {
DUSTS_LED(LOWv);
_delay_us(280);
//measure ADC
int16_t m = ADC_GetChannelReading(ADC_REFERENCE_AVCC | DUSTS_ADC_MUX_MASK);
_delay_us(40);
DUSTS_LED(HIGHv);
return m;
}
void handle_cmd(uint8_t cmd)
{
int16_t mv=0;
switch(cmd) {
case 'm': mv = dusts_measure(); printf("Dust Value: %d\r\n", mv); break;
case 'r': reset2bootloader(); break;
default: printf("error\r\n"); return;
}
}
int main(void)
{
MCUSR &= ~(1 << WDRF);
wdt_disable();
led_init();
led_on();
cpu_init();
usbio_init();
dusts_init();
sei();
for(;;) {
led_off();
int16_t BytesReceived = usbio_bytes_received();
while(BytesReceived > 0) {
int ReceivedByte = fgetc(stdin);
if(ReceivedByte != EOF) {
handle_cmd(ReceivedByte);
}
BytesReceived--;
}
usbio_task();
led_on();
_delay_ms(100);
}
}
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