2016年11月20日 (日) 01:37的版本

1 Overview

Sharp GP2Y1010AU0F partical sensor

GP2Y1010AU0F Datasheet

2 Connections

Sharp pin 1 (V-LED)   => 150ohm resister => Quantum_VIN_3V3
Sharp pin 2 (LED-GND) => Quantum_GND
Sharp pin 3 (LED)     => Quantum_D8_IO22
Sharp pin 4 (S-GND)   => Quantum_GND
Sharp pin 5 (Vo)      => Quantum_I36
Sharp pin 6 (Vcc)     => Quantum_VIN_3V3

3 Schemmatics

4 Quick Start

4.1 Build

$ sudo apt-get install git wget make libncurses-dev flex bison gperf python python-serial
$ wget https://dl.espressif.com/dl/xtensa-esp32-elf-linux32-1.22.0-59.tar.gz
$ mkdir -p toolchain
$ tar zxf xtensa-esp32-elf-linux32-1.22.0-59.tar.gz -C toolchain
$ export PATH=$PATH:`pwd`/toolchain/xtensa-esp32-elf/bin
$
$ git clone --recursive git://github.com/icamgo/esp-idf.git
$ export IDF_PATH=`pwd`/esp-idf
$ cd esp-idf/examples/11_sharp_dust
$ make menuconfig
$ make -j2

4.2 Upload

$ make flash

You need to press the RST buttom after uploading the firmware into flash. If you guys do not like to do this please patch the /path/to/esp-idf/components/esptool_py/esptool/esptool.py :

diff --git a/esptool.py b/esptool.py
index 755f4cb..ff92c91 100755
--- a/esptool.py
+++ b/esptool.py
@@ -197,6 +197,12 @@ class ESPLoader(object):
               + '\xc0'
         self._port.write(buf)
 
+    def reset_to_app(self):
+        self._port.setDTR(False)
+        self._port.setRTS(True)
+        time.sleep(0.05)
+        self._port.setRTS(True)
+
     """ Calculate checksum of a blob, as it is defined by the ROM """
     @staticmethod
     def checksum(data, state=ESP_CHECKSUM_MAGIC):
@@ -1421,7 +1427,6 @@ def dump_mem(esp, args):
         sys.stdout.flush()
     print 'Done!'
 
-
 def write_flash(esp, args):
     """Write data to flash
     """
@@ -1503,6 +1508,7 @@ def write_flash(esp, args):
     if args.verify:
         print 'Verifying just-written flash...'
         verify_flash(esp, args, header_block)
+    esp.reset_to_app()
 
 
 def image_info(args):

Then Quantum can reset to run your app automatically after uploading the firmware into flash

4.3 Checking Output

$ picocom -b 115200 /dev/ttyUSB0
......
......

5 Reference

For more information please refer to

• http://www.howmuchsnow.com/arduino/airquality/
• Noduino
• Noduino Quantum