From e603ca4a223ee2a1eeacf7d0d5b9375e05065df0 Mon Sep 17 00:00:00 2001
From: Bernhard Tittelbach <xro@realraum.at>
Date: Sun, 17 Feb 2013 02:05:14 +0000
Subject: usb-adc example for sharp dustsensor

git-svn-id: https://svn.spreadspace.org/avr/trunk@200 aa12f405-d877-488e-9caf-2d797e2a1cc7
---
 usb-adc-dustsensor/Makefile             |  44 ++++++++++++
 usb-adc-dustsensor/usb-adc-dustsensor.c | 116 ++++++++++++++++++++++++++++++++
 2 files changed, 160 insertions(+)
 create mode 100644 usb-adc-dustsensor/Makefile
 create mode 100644 usb-adc-dustsensor/usb-adc-dustsensor.c

(limited to 'usb-adc-dustsensor')

diff --git a/usb-adc-dustsensor/Makefile b/usb-adc-dustsensor/Makefile
new file mode 100644
index 0000000..5c49709
--- /dev/null
+++ b/usb-adc-dustsensor/Makefile
@@ -0,0 +1,44 @@
+##
+##  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/>.
+##
+
+NAME := usb-adc-dustsensor
+BOARD_TYPE := teensy2
+OBJ := $(NAME).o
+LIBS := util led lufa-descriptor-usbserial usbio
+EXTERNAL_LIBS := lufa
+
+LUFA_PATH := ../contrib/LUFA-120219
+LUFA_OPTS  = -D USB_DEVICE_ONLY
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
+LUFA_OPTS += -D ORDERED_EP_CONFIG
+LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8
+LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1
+LUFA_OPTS += -D USE_FLASH_DESCRIPTORS
+LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
+LUFA_OPTS += -D INTERRUPT_CONTROL_ENDPOINT
+
+LUFA_OPTS += -D USB_MANUFACTURER="L\"equinox\""
+LUFA_OPTS += -D USB_PRODUCT="L\"$(NAME)\""
+
+LUFA_COMPONENTS := USB USBCLASS
+
+include ../include.mk
diff --git a/usb-adc-dustsensor/usb-adc-dustsensor.c b/usb-adc-dustsensor/usb-adc-dustsensor.c
new file mode 100644
index 0000000..8e0e600
--- /dev/null
+++ b/usb-adc-dustsensor/usb-adc-dustsensor.c
@@ -0,0 +1,116 @@
+/*
+ *  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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