Catégorie : Uncategorized
Session du lundi 10 février
Support : prog
Voiture Lego Arduino
Atelier Arduino #1
Lundi 14 octobre dans les locaux d’ICV au Pradet
A propos de Yolo
https://pjreddie.com/darknet/yolo/
[karim@10-83-102-17 yolo-object-detection]$ pwd
/home/karim/perso/yolo/yolo-object-detection
[karim@10-83-102-17 yolo-object-detection]$ python yolo.py –image images/baggage_claim.jpg –yolo yolo-coco
[INFO] loading YOLO from disk…
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
X server found. dri2 connection failed!
[INFO] YOLO took 1.680755 seconds
[array([[0.03601214, 0.04780507, 0.39001054, …, 0. , 0. ,
0. ],
[0.04536078, 0.03608821, 0.2888255 , …, 0. , 0. ,
0. ],
[0.0528849 , 0.03706014, 0.7606114 , …, 0. , 0. ,
0. ],
…,
[0.9585623 , 0.948351 , 0.3713468 , …, 0. , 0. ,
0. ],
[0.962664 , 0.9636656 , 0.2799068 , …, 0. , 0. ,
0. ],
[0.9637902 , 0.9584853 , 0.87090683, …, 0. , 0. ,
0. ]], dtype=float32), array([[0.02014969, 0.02389977, 0.04925819, …, 0. , 0. ,
0. ],
[0.01900613, 0.01717794, 0.38852233, …, 0. , 0. ,
0. ],
[0.02272185, 0.01636733, 0.07095726, …, 0. , 0. ,
0. ],
…,
[0.9744766 , 0.9797191 , 0.0464907 , …, 0. , 0. ,
0. ],
[0.98238534, 0.9776212 , 0.3838935 , …, 0. , 0. ,
0. ],
[0.97990173, 0.9834362 , 0.07725822, …, 0. , 0. ,
0. ]], dtype=float32), array([[0.00975429, 0.00449965, 0.01337121, …, 0. , 0. ,
0. ],
[0.00856061, 0.01010363, 0.01735355, …, 0. , 0. ,
0. ],
[0.01061513, 0.00706433, 0.17565256, …, 0. , 0. ,
0. ],
…,
[0.9893361 , 0.9900188 , 0.01663892, …, 0. , 0. ,
0. ],
[0.9902003 , 0.9875034 , 0.01849871, …, 0. , 0. ,
0. ],
[0.987604 , 0.99132895, 0.16302222, …, 0. , 0. ,
0. ]], dtype=float32)]
Yolo 9000
https://github.com/philipperemy/yolo-9000
Dans le Makefile, mettre OPENCV=0 (sinon ca ne compile pas …)
[karim@10-83-102-17 darknet]$ ./darknet detector test cfg/combine9k.data cfg/yolo9000.cfg ../yolo9000-weights/yolo9000.weights data/horses.jpg
La plante a besoin d’être arrosée
Un capteur d’humidité est connecté à un module Arduino pour savoir si une plante a besoin d’être arrosée. Si la plante a besoin d’être arrosée, une notification est envoyée sur un téléphone Android (voir le second lien ci-dessous) et la matrice de leds affiche une tête triste.
Le module ESP8266 doit être configuré en 9600 bds (voir premier lien ci-dessous). Il faut une alimentation externe, n’alimenter que par le port USB du PC ne suffit pas.
L’envoi de SMS doit être possible (en particulier via Free mobile) mais il faut probablement utiliser une autre librairie pour la connexion WIFI (elle doit gérer le https).
https://home.et.utwente.nl/slootenvanf/2018/03/17/connect-esp8266-control-blynk/
https://www.geekstips.com/android-push-notifications-esp8266-arduino-tutorial/
- Matériel
- 1 module Arduino Nano
- 1 module ESP8266 pour la connexion WIFI
- 1 capteur d’humidité comme sur le schéma ci-dessous
- 1 matrice de leds avec MAX7219
- 1 résistance de 10 kO
- 1 plaque à insertion
- Des fils
- Une alimentation externe 5V et 3.3V
- Le montage
- Le code
#include "LowPower.h"
#include "LedControl.h"
#include "binary.h"
#include "WiFiEsp.h"
// Emulate WifiSerial on pins 2/3 if not present
//#ifndef HAVE_HWWifiSerial
#include "SoftwareSerial.h"
SoftwareSerial WifiSerial(7, 6); // RX, TX
//#endif
// PushingBox scenario DeviceId code and API
String deviceId = "xxxxxxx";
const char* logServer = "api.pushingbox.com";
char ssid[] = "SON_SSID";
char pass[] = "SON_MOT_DE_PASSE";
int status = WL_IDLE_STATUS; // the Wifi radio's status
LedControl lc=LedControl(12,11,10,1);
// delay time between faces
unsigned long delaytime=1000;
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
// happy face
byte hf[8]= {B00111100,B01000010,B10100101,B10000001,B10100101,B10011001,B01000010,B00111100};
// neutral face
byte nf[8]={B00111100, B01000010,B10100101,B10000001,B10111101,B10000001,B01000010,B00111100};
// sad face
byte sf[8]= {B00111100,B01000010,B10100101,B10000001,B10011001,B10100101,B01000010,B00111100};
void setup()
{
Serial.begin(115200);
// No setup is required for this library
lc.shutdown(0,false);
// Set brightness to a medium value
lc.setIntensity(0,8);
// Clear the display
lc.clearDisplay(0);
WifiSerial.begin(9600);
// initialize ESP module
WiFi.init(&WifiSerial);
// check for the presence of the shield
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue
while (true);
}
// attempt to connect to WiFi network
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network
status = WiFi.begin(ssid, pass);
}
// you're connected now, so print out the data
Serial.println("You're connected to the network");
Serial.println();
printCurrentNet();
printWifiData();
}
void sendNotificationAndroid(String message){
// initialize serial for ESP module
WiFiEspClient client;
Serial.println("- connecting to pushing server: " + String(logServer));
if (client.connect(logServer, 80)) {
Serial.println("- succesfully connected");
String postStr = "devid=";
postStr += String(deviceId);
postStr += "&message_parameter="+message;
postStr += "\r\n\r\n";
Serial.println("- sending data...");
client.print("POST /pushingbox HTTP/1.1\n");
client.print("Host: api.pushingbox.com\n");
client.print("Connection: close\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);
}
client.stop();
Serial.println("- stopping the client");
}
void printWifiData()
{
// print your WiFi shield's IP address
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print your MAC address
byte mac[6];
WiFi.macAddress(mac);
char buf[20];
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", mac[5], mac[4], mac[3], mac[2], mac[1], mac[0]);
Serial.print("MAC address: ");
Serial.println(buf);
}
void printCurrentNet()
{
// print the SSID of the network you're attached to
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to
byte bssid[6];
WiFi.BSSID(bssid);
char buf[20];
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", bssid[5], bssid[4], bssid[3], bssid[2], bssid[1], bssid[0]);
Serial.print("BSSID: ");
Serial.println(buf);
// print the received signal strength
long rssi = WiFi.RSSI();
Serial.print("Signal strength (RSSI): ");
Serial.println(rssi);
}
void drawSadFace(){
// Display sad face
lc.setRow(0,0,sf[0]);
lc.setRow(0,1,sf[1]);
lc.setRow(0,2,sf[2]);
lc.setRow(0,3,sf[3]);
lc.setRow(0,4,sf[4]);
lc.setRow(0,5,sf[5]);
lc.setRow(0,6,sf[6]);
lc.setRow(0,7,sf[7]);
delay(600);
}
void drawHappyFace(){
// Display happy face
lc.setRow(0,0,hf[0]);
lc.setRow(0,1,hf[1]);
lc.setRow(0,2,hf[2]);
lc.setRow(0,3,hf[3]);
lc.setRow(0,4,hf[4]);
lc.setRow(0,5,hf[5]);
lc.setRow(0,6,hf[6]);
lc.setRow(0,7,hf[7]);
delay(600);
}
void loop()
{
int sensorValue = analogRead(A0);
Serial.println(sensorValue);
Serial.println(millis());
if ( sensorValue > 700 ) // A ajuster !!!!!!
{
if (millis() - lastConnectionTime > 50000) {
sendNotificationAndroid("Arrose moi !");
lastConnectionTime = millis();
drawSadFace();
delay(10000);
}
}
else
{
if (millis() - lastConnectionTime > 50000) {
sendNotificationAndroid("C'est OK !");
lastConnectionTime = millis();
drawHappyFace();
delay(10000);
}
}
lc.clearDisplay(0);
}
Transformer un Raspberry Pi Zero W en point d’accès local avec partage de répertoire
Le SSID sera JONATHAN et la clé 12345678910. Les appareils qui se connecteront récupèreront une adresse IP en 192.168.2.X. Le Raspberry Pi Zero aura pour IP 192.168.2.1. Il n’aura pas accès à internet et les postes clients connectés dessus non plus. Un répertoire Public sera accessible à tout le monde.
- Télécharger la dernière Raspbian (vous obtiendrez un fichier .zip)
https://www.raspberrypi.org/downloads/raspbian/
Décompresser l’archive
[karim@monpc$ unzip 2018-06-27-raspbian-stretch.zip Archive: 2018-06-27-raspbian-stretch.zip inflating: 2018-06-27-raspbian-stretch.img
- Installer Raspbian sur une microSD (16 Go)
https://www.raspberrypi.org/documentation/installation/installing-images/README.md
Récupérer Etcher pour Linux x64 (64-bit) (AppImage) et lancer l’appli
Choisir l’image 2018-06-27-raspbian-stretch.img et lancer l’écriture
- Insérer la microSD dans le Raspberry PI Zero W, brancher un clavier + souris + écran (il faudra un réplicateur de ports USB qui fonctionne avec un Pi Zero …) puis démarrer
Raspbian démarre et on arrive directement sur le bureau - Lancer Raspi-config en mode graphique et faire les changements pour démarrer en console, activer l’accès SSH, mettre le clavier en azerty
- Configurer le Wifi
- Redémarrer, on arrive en mode console (plus d’interface graphique)
- Se mettre en root
sudo bash - Changer le mot de passe par défaut (raspberry) avec la commande passwd
- Mettre à jour tous les paquets :
apt-get update
- Installer les paquets suivants :
apt install hostapd dnsmasq samba samba-common-bin - Dans le fichier /etc/rc.local, ajouter la ligne
ifconfig wlan0 192.168.2.1
- Dans le fichier /etc/dhcpd.conf, mettre :
interface wlan0
static ip_address=192.168.2.1/24
denyinterfaces eth0
denyinterfaces wlan0 - Dans le fichier /etc/dnsmasq.conf, mettre :
interface=wlan0
dhcp-range=192.168.2.2,192.168.2.50,255.255.255.0,24h - Dans le fichier /etc/default/hostapd, il faut
DAEMON_CONF= »/etc/hostapd/hostapd.conf »
- Dans le fichier /etc/hostapd/hostapd.conf, mettre :
interface=wlan0
ssid=JONATHAN
hw_mode=g
channel=11
wpa=1
wpa_passphrase=12345678910
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
wpa_ptk_rekey=600
macaddr_acl=0 - Dans le fichier /etc/samba/smb.conf, mettre :
[public]
comment= Public Storage
path=/home/shares/public
writable = yes
browsable=yes
;valid users = @users
;force group = users
create mask = 0644
directory mask = 0755
read only = no
public = yes
force user = pi
- Exécuter les commandes suivantes :
update-rc.d hostapd defaults systemctl enable hostapd systemctl enable dnsmasq systemctl enable samba systemctl start hostapd systemctl start dnsmasq /etc/init.d/samba restart reboot
Sous Android, installer, via le PlayStore, l’application X plorer. Le partage est accessible via l’IP 192.168.2.1.
Tracking …
Détecte un object en mouvement (caméra sur RPI), prend une photo et l’envoie par mail.
import math,sys,os,cv2,time
import Queue,threading
import numpy as np
import signal
import datetime
import commands
import smtplib
import datetime,traceback
from email import Encoders
from email.MIMEText import MIMEText
from email.MIMEBase import MIMEBase
from email.MIMEMultipart import MIMEMultipart
import imutils
def sendMail(tfrom, to, subject,messhtml,tosenddir,filename):
print 'in sendMail'
try:
server = smtplib.SMTP("smtp.gmail.com", 587)
server.ehlo()
server.starttls()
server.ehlo()
server.login("xxxx", "xxx")
mail = MIMEMultipart()
mail['From'] = tfrom
mail['Subject'] = subject
mail['To'] = to
part2 = MIMEText(messhtml, 'html')
mail.attach(part2)
# now attach the file
if filename != '':
fileMsg = MIMEBase('application','octet-stream')
fileMsg.set_payload(file(tosenddir+'/'+filename).read())
Encoders.encode_base64(fileMsg)
fileMsg.add_header('Content-Disposition', 'attachment; filename="'+filename+'"')
mail.attach(fileMsg)
server.sendmail(tfrom, [to], mail.as_string())
except :
print traceback.print_exc()
return 1
return 0
CAMERA=0 # 0 cam interne, 1 cam externe
WRITE_JPEG=True
SENDMAIL=False
CONF='1280x720'
#CONF='640x480'
TIMEBETWEENIMGSECS=2
BACKGROUND=True
# Size, colors parameters
SIZETOKEEP=5000
DIST=400 # 200
RPI=True
if RPI :
import RPi.GPIO as GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(26,GPIO.OUT)
# BBoxes must be in the format:
# ( (topleft_x), (topleft_y) ), ( (bottomright_x), (bottomright_y) ) )
top = 0
bottom = 1
left = 0
right = 1
def merge_collided_bboxes( bbox_list ):
# For every bbox...
for this_bbox in bbox_list:
# Collision detect every other bbox:
for other_bbox in bbox_list:
if this_bbox is other_bbox: continue # Skip self
# Assume a collision to start out with:
has_collision = True
# These coords are in screen coords, so > means
# "lower than" and "further right than". And <
# means "higher than" and "further left than".
# We also inflate the box size by 10% to deal with
# fuzziness in the data. (Without this, there are many times a bbox
# is short of overlap by just one or two pixels.)
if (this_bbox[bottom][0]*1.1 < other_bbox[top][0]*0.9): has_collision = False
if (this_bbox[top][0]*.9 > other_bbox[bottom][0]*1.1): has_collision = False
if (this_bbox[right][1]*1.1 < other_bbox[left][1]*0.9): has_collision = False
if (this_bbox[left][1]*0.9 > other_bbox[right][1]*1.1): has_collision = False
if has_collision:
# merge these two bboxes into one, then start over:
top_left_x = min( this_bbox[left][0], other_bbox[left][0] )
top_left_y = min( this_bbox[left][1], other_bbox[left][1] )
bottom_right_x = max( this_bbox[right][0], other_bbox[right][0] )
bottom_right_y = max( this_bbox[right][1], other_bbox[right][1] )
new_bbox = ( (top_left_x, top_left_y), (bottom_right_x, bottom_right_y) )
bbox_list.remove( this_bbox )
bbox_list.remove( other_bbox )
bbox_list.append( new_bbox )
# Start over with the new list:
return merge_collided_bboxes( bbox_list )
# When there are no collions between boxes, return that list:
return bbox_list
class WorkerDraw(threading.Thread):
def __init__(self, queue):
threading.Thread.__init__(self)
self.queue = queue
def run(self):
while True:
point = self.queue.get()
print '=========> point =',point
self.queue.task_done()
class Target:
def __init__(self):
self.capture = cv2.VideoCapture(CAMERA)
if CONF == '1280x720':
print 'OK set'
self.capture.set(cv2.CAP_PROP_FRAME_WIDTH,1280)
self.capture.set(cv2.CAP_PROP_FRAME_HEIGHT, 720)
self.capture.set(cv2.CAP_PROP_FPS, 25)
time.sleep(2)
w = self.capture.get(cv2.CAP_PROP_FRAME_WIDTH)
h = self.capture.get(cv2.CAP_PROP_FRAME_HEIGHT)
print w,h
if BACKGROUND == False:
cv2.namedWindow("Target", CAMERA)
def run(self):
out_queue=Queue.Queue(maxsize=1)
t = WorkerDraw(out_queue)
t.start()
prev_x=0
prev_y=0
t0= time.time()
t0_img= time.time()
Process=False
# initialize the first frame in the video stream
firstFrame = None
# loop over images
while True:
# Capture frame from webcam
rval,color_image = self.capture.read()
hsv = cv2.cvtColor(color_image,cv2.COLOR_BGR2HSV)
if not rval :
print 'Pb cam'
break
t1 = time.time()
t1_img = time.time()
if t1-t0 > 30 and Process == False: # 30s le temps de chauffer
Process=True
print 'Processing !'
com="df -h / | awk '{print $5}' | grep -v Uti | sed 's/%//g'"
res,out=commands.getstatusoutput(com)
print out
if int(out) > 80 :
print 'Not enough disk space !'
Process=False
# resize the frame, convert it to grayscale, and blur it
#color_image = imutils.resize(color_image, width=500) # commente par KB le 27/05/2018
gray = cv2.cvtColor(color_image, cv2.COLOR_BGR2GRAY)
gray = cv2.GaussianBlur(gray, (21, 21), 0)
# if the first frame is None, initialize it
if firstFrame is None:
firstFrame = gray
continue
# compute the absolute difference between the current frame and
# first frame
frameDelta = cv2.absdiff(firstFrame, gray)
thresh = cv2.threshold(frameDelta, 15, 255, cv2.THRESH_BINARY)[1]
if BACKGROUND == False :
cv2.imshow("diff",thresh)
# dilate the thresholded image to fill in holes, then find contours
# on thresholded image
thresh = cv2.dilate(thresh, None, iterations=2)
contour= cv2.findContours(thresh.copy(), cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)
# a commenter / decommenter
firstFrame=gray
#######################################
bounding_box_list = []
for c in contour[1]:
bounding_rect = cv2.boundingRect( c )
point1 = ( bounding_rect[0], bounding_rect[1] )
point2 = ( bounding_rect[0] + bounding_rect[2], bounding_rect[1] + bounding_rect[3] )
bounding_box_list.append( ( point1, point2 ) )
# Find the average size of the bbox (targets), then
# remove any tiny bboxes (which are prolly just noise).
# "Tiny" is defined as any box with 1/10th the area of the average box.
# This reduces false positives on tiny "sparkles" noise.
box_areas = []
for box in bounding_box_list:
box_width = box[right][0] - box[left][0]
box_height = box[bottom][0] - box[top][0]
box_areas.append( box_width * box_height )
#cv2.rectangle( color_image, box[0], box[1], [255,0,0], 1)
average_box_area = 0.0
if len(box_areas):
average_box_area = float( sum(box_areas) ) / len(box_areas)
trimmed_box_list = []
for box in bounding_box_list:
box_width = box[right][0] - box[left][0]
box_height = box[bottom][0] - box[top][0]
# Only keep the box if it's not a tiny noise box:
print 'size=',box_width * box_height
if (box_width * box_height)-SIZETOKEEP > 200 :
print 'ignore size'
#if (box_width * box_height) > average_box_area*0.1 and math.fabs((box_width * box_height)-SIZETOKEEP) < 200 :
#if (box_width * box_height) > average_box_area*0.1 :
trimmed_box_list.append( box )
# Draw the trimmed box list:
for box in trimmed_box_list:
# jaune
cv2.rectangle( color_image, box[0], box[1], [0,255,255], 2 )
'''
trimmed_box_list2=[]
for box in trimmed_box_list:
box_width = box[1][0] - box[0][0]
box_height = box[1][1] - box[0][1]
print 'tbox=',(box[0][0],box[0][1],box_width,box_height)
trimmed_box_list2.append((box[0][0],box[0][1],box_width,box_height))
trimmed_box_list2b=[]
for b in trimmed_box_list2:
trimmed_box_list2b.append(b)
trimmed_box_list2b,weights = cv2.groupRectangles(trimmed_box_list2b,1)
'''
bounding_box_list = merge_collided_bboxes( trimmed_box_list )
print bounding_box_list,len(bounding_box_list)
print 'estimated_target_count=',len(bounding_box_list)
if Process == True :
print 'Processing !'
# Draw the merged box list:
for box in bounding_box_list:
#vert
#cv2.rectangle( color_image, (box[0],box[1]),(box[0]+box[2],box[1]+box[3]), [0,255,0], 1 ) # box pas bons
cv2.rectangle( color_image, box[0], box[1], [0,255,0], 1 )
#x=int(box[0]+box[2]/2.0)
#y=int(box[1]+box[3]/2.0)
x=int((box[0][0]+box[1][0])/2.0)
y=int((box[0][1]+box[1][1])/2.0)
center_point=(x,y)
#print center_point
center_point=(x,y)
box_width = box[1][0] - box[0][0]
box_height = box[1][1] - box[0][1]
#box_width = box[2] - box[0]
#box_height = box[3] - box[1]
thesize=box_height*box_width
print 'thesize=',thesize
dist=(x-prev_x)*(x-prev_x)+(y-prev_y)*(y-prev_y)
print "dist=",dist
prev_x=x
prev_y=y
print 'hsv x,y=',x,y
px=hsv[y,x]
print 'px=',px
h=px[0]
s=px[1]
v=px[2]
if thesize >SIZETOKEEP and out_queue.empty() and dist>DIST and Process == True :
#if Process==True:
print 'ADDED','x=',x,'y=',y
print 'thesize=',thesize
out_queue.put({'point': (x,y)})
#cv2.rectangle( color_image, (box[0],box[1]), (box[0]+box[2],box[1]+box[3]), [0,255,0], 1) #vert
cv2.rectangle( color_image, box[0], box[1], [0,255,0], 1)
cv2.circle(color_image, center_point, 20, [255, 255,255], 1)
cv2.circle(color_image, center_point, 15, [100, 255, 255], 1)
cv2.circle(color_image, center_point, 10, [255, 255, 255], 2)
cv2.circle(color_image, center_point, 5, [100, 255, 255], 3)
if WRITE_JPEG and t1_img-t0_img > TIMEBETWEENIMGSECS:
if RPI:
GPIO.output(26, GPIO.HIGH)
t0_img=t1_img
filename='target_'+datetime.datetime.now().strftime("%Y%m%d%H%M%S")+'_x'+str(x)+'_y'+str(y)+'_thesize'+str(thesize)+'.jpg'
cv2.imwrite(filename,color_image)
if SENDMAIL == True:
res=sendMail('adresse mail expediteur', 'adresse mail de destination', 'mous','','/home/karim/perso/moustiques/',filename)
print res
if RPI:
GPIO.output(26, GPIO.LOW)
# Display frame to user
if BACKGROUND == False:
cv2.imshow("Target", color_image)
# Listen for ESC or ENTER key
# ### il faut avoir le focus sur l image
c = cv2.waitKey(1) % 0x100
if c == 27 or c == 10:
os.kill(os.getpid(), signal.SIGKILL)
if __name__=="__main__":
# start
t = Target()
#import cProfile
#cProfile.run( 't.run()' )
t.run()
Transmission de données entre un Arduino et une Raspberry Pi 3 en utilisant des modules radio Nrf24L01
Il s’agit ici de faire une démo de transmission de données (température) entre un Arduino et un Raspberry Pi 3. C’est le protocole SPI qui est utilisé.
Liens utiles :
- https://github.com/Michelgard/Capteur-DS18D20-Arduino-avec-emetteur-2.4Ghz
- https://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo#PP
ATTENTION : si Arduino alimenté via port USB PC alors il faut que le module radio émette à puissance minimale
Connexions :
Connexion nRF24L01+ sur l’arduino :
1 GND 2 VCC 3.3
3 D9 4 D10
5 D13 6 D11
7 D12 8 D2
Installer nRF24L01+ sur le Raspberry PI
NRFL01 Raspi
1 6 GND
2 1 VCC 3.3
3 22 CE
4 24 CSN
5 23 SCK
6 19 MOSI
7 21 MISO
Activer le SPI sur le Raspberry Pi (raspi-config)
Code Python pour le Raspberry Pi
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from nrf24 import NRF24
import time
from time import gmtime, strftime
import xml.dom.minidom
import sys
verbose = 0
if len(sys.argv) > 1:
if sys.argv[1] == "-v":
verbose = 1
else:
print "Argument non reconnu ! -v pour verbose"
sys.exit(0)
"""Variable de connexion R24"""
pipes = [[0xf0, 0xf0, 0xf0, 0xf0, 0xe1], [0xf0, 0xf0, 0xf0, 0xf0, 0xd2]]
""" init variable"""
temperExt = '0.0'
"""Initialisation connexion R24"""
radio = NRF24()
radio.begin(0, 0,25,18) #set gpio 25 as CE pin
radio.setRetries(15,15)
radio.setPayloadSize(52)
radio.setChannel(0x4c)
radio.setDataRate(NRF24.BR_250KBPS)
radio.setPALevel(NRF24.PA_MAX)
radio.setAutoAck(1)
radio.openWritingPipe(pipes[0])
radio.openReadingPipe(1, pipes[1])
radio.startListening()
"""fin initialisation R24"""
"""Fonction pour extraire de la variable receptionnée les différentes valeurs"""
def extract(raw_string, start_marker, end_marker):
start = raw_string.index(start_marker) + len(start_marker)
end = raw_string.index(end_marker, start)
return raw_string[start:end]
if verbose:
print
print ("Attente réception du capteur")
print
"""Boucle infinie de réception des données"""
while True:
pipe = [0]
"""Si pas de réception on attends ..."""
while not radio.available(pipe, True):
time.sleep(1000/1000000.0)
recv_buffer = []
radio.read(recv_buffer) #Les données réceptionnées sont mise dans la variable
out = ''.join(chr(i) for i in recv_buffer)#création d'une variable blobage avec les valeurs du tableu buffer
"""Création de la date et heure en francais et en SQL"""
now = time.localtime(time.time())
year, month, day, hour, minute, second, weekday, yearday, daylight = now
dateheure = "%02d/%02d/%04d" % (day, month, year) + " " + "%02d:%02d:%02d" % (hour, minute, second)
dateheureSQL = "%04d-%02d-%02d" % (year, month, day) + " " + "%02d:%02d:%02d" % (hour, minute, second)
""""La variable out est décortiquée avec les données de numéro de capteur, température, humidité, tension pile """
temperExt=extract(out,'E','E')
"""affichage des données recues pour es teste"""
if verbose:
print (dateheure)
if verbose:
print ("La température Ext : " + temperExt + "°C")
print
Code Arduino :
#include <avr/sleep.h>
#include <avr/wdt.h>
#include
#include "nRF24L01.h"
#include
#include
#include // Inclusion de la librairie OneWire
#define DS18B20 0x28 // Adresse 1-Wire du DS18B20
#define BROCHE_ONEWIRE 7 // Broche utilisée pour le bus 1-Wire
OneWire ds(BROCHE_ONEWIRE); // Création de l’objet OneWire ds
//variables radio
RF24 radio(9,10); //création instance radio (pin ce,csn)
const uint64_t pipes[2] = { 0xF0F0F0F0E1LL,0xF0F0F0F0D2LL };
// Fonction récupérant la température depuis le DS18B20
// Retourne true si tout va bien, ou false en cas d’erreur
boolean getTemperature(float *temp){
byte data[9], addr[8];
// data : Données lues depuis le scratchpad
// addr : adresse du module 1-Wire détecté
if (!ds.search(addr)) { // Recherche un module 1-Wire
ds.reset_search(); // Réinitialise la recherche de module
return false; // Retourne une erreur
}
if (OneWire::crc8(addr, 7) != addr[7]) // Vérifie que l’adresse a été correctement reçue
return false; // Si le message est corrompu on retourne une erreur
if (addr[0] != DS18B20) // Vérifie qu’il s’agit bien d’un DS18B20
return false; // Si ce n’est pas le cas on retourne une erreur
ds.reset(); // On reset le bus 1-Wire
ds.select(addr); // On sélectionne le DS18B20
ds.write(0x44, 1); // On lance une prise de mesure de température
delay(800); // Et on attend la fin de la mesure
ds.reset(); // On reset le bus 1-Wire
ds.select(addr); // On sélectionne le DS18B20
ds.write(0xBE); // On envoie une demande de lecture du scratchpad
for (byte i = 0; i < 9; i++) // On lit le scratchpad
data[i] = ds.read(); // Et on stock les octets reçus
// Calcul de la température en degré Celsius
*temp = ((data[1] << 8) | data[0]) * 0.0625;
// Pas d’erreur
return true;
}
// nrf24 debug
int serial_putc( char c, FILE * )
{
Serial.write( c );
return c;
}
void printf_begin(void)
{
fdevopen( &serial_putc, 0 );
}
void setup()
{
printf_begin();
Serial.begin(9600); //Debug
radio.begin();
radio.setChannel(0x4c);
radio.setAutoAck(1);
radio.setRetries(15,15);
radio.setDataRate(RF24_250KBPS);
radio.setPALevel(RF24_PA_MIN);
radio.setPayloadSize(32);
radio.openReadingPipe(1,pipes[0]);
radio.openWritingPipe(pipes[1]);
radio.stopListening();
radio.powerUp(); //alimente le module nrf24l01+
radio.printDetails(); //for Debugging
}
void loop (){
float txbuffer[1] = {0};
char SendPayload[32] = « RS1 : »;
char tempstr[10] = « »;
if(getTemperature(&txbuffer[0])) {
strcat(SendPayload, « E »);
dtostrf(txbuffer[0],2,2,tempstr);
Serial.println(« ok »);
strcat(SendPayload,tempstr);
strcat(SendPayload, « E »);
Serial.println(SendPayload);
// radio.powerUp(); //alimente le module nrf24l01+
delay(1000);
bool ok = radio.write(&SendPayload,sizeof(SendPayload));
delay(1000);
//Serial.println(« ok2 »);
//radio.powerDown(); //arrêt de l’alimentation du module nrf24l01+
}
// else
// {
// Serial.println(« Error »);
// }
//for (int i = 0; i < 100; i++){
delay(3000);
//}
}
root@raspberrypi:~/nrf/Capteur-DS18D20-Arduino-avec-emetteur-2.4Ghz# python ./lecture-capteurRF24_KB.py -v
Attente réception du capteur
15/07/2018 12:32:23
La température Ext : 27.38°C
15/07/2018 12:32:32
La température Ext : 27.38°C
Sonde DS18B20 avec Raspberry Pi 3
- Sonde DS18B20 : Mettre une résistance de 4.7 kO entre le signal (fil jaune) et le + (fil rouge)
- Brancher le fil rouge au +5V du RPI3, le fil noir à la masse et le dernier sur le GPIO4
- Activer le One Wire sur le RPI3 : en root, lancer raspi-config (le GPIO4 est le GPIO par défaut pour le One Wire)
root@raspberrypi:~# cat /sys/bus/w1/devices/28-0218313772ff/w1_slave
9e 01 4b 46 7f ff 0c 10 8a : crc=8a YES
9e 01 4b 46 7f ff 0c 10 8a t=25875
Lire T=25.875