Am achizitionat un adaptor wireless (WiFi) pe USB pentru a-l folosi la placa de dezvoltare Raspberry Pi...
Din pacate cunostintele mele in Linux sunt foarte reduse, am observat doar ca nu il "vede", asa ca am incercat pe un calculator cu Windows XP, apoi pe unul cu Windows 7, apoi pe altele cu Windows XP si Windows 7, rezultatul fiind acelasi:
Desi primele sugestii la apelul meu de a rezolva problema, erau de a schimba sistemul de operare in Windows 8, care ar fi rezolvat problema (desi eu nu cred), am mai sapat si la sugestia unui vizitator al paginii de pe Facebook, am cautat ID-ul chipset-ului gasind ca este "USB\VID_0BDA&PID_0179":
La primele cautari nu am gasit mare lucru, dar insistand, deoarece nici vanzatorul nu avea driver-ele corecte, am dat de pagina Drivers Guru:
unde apare ca chipset-ul este un Realtek RTL8188ETV.
Ideea de baza este sa nu renuntati usor cand va loviti de o problema asemanatoare.
PS: Daca scot de la cautare partea cu "USB\" ramanand doar "VID_0BDA&PID_0179"gasesc mai multe site-uri cu driver-e, unul din ele fiind www.magicdriver.com, altul fiind http://www.driveridentifier.com:
2 temperaturi citite cu LM335 transmise prin radio la un afisaj LCD cu 16 coloane si 2 randuri conectat clasic la Arduino
Deoarece m-am gandit ca nu toata lumea foloseste comanda afisajului LCD pe 2 fire (i2c), adica nu are acea interfata, m-am apucat sa conectez afisajul clasic, cu 6 fire utile (si 2 alimentare): Schema de conectare a modulului de emisie si a celor 2 senzori de temperatura LM335Z la placa Arduino este aceeasi ca cea din articolul anterior:
La partea de receptor, se schimba modul de conectare:
Initial, am incercat sa folosesc configuratia din exemplele Arduino, adica asta:
si sa conectez receptorul la pinul 7.. am constatat ca se bloc ca activare apartii de receptor, am conectat si la alti pini si aceeasi eroare, asa ca m-am ami uitat pe documentatia librariei WirtualWre (vezi explicatiile de la skyduino.wordpress.com si mi-am dat seama ca foloseam pinul D11 (digital 11), asa ca am modificat configuratia cum e prezentat mai sus...
Sketch-ul pentru receptor devine:
/*.............................................................Sending Multiple Variables Using VirtualWire. ReceiverAuthor: Rodrigo Mompo RedoliFor http://controlrobotics.rodrigomompo.comadapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.comversion 5.1..............................................................*/
#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
/* ------------------- | LCD | Arduino | ------------------- LCD RS pin to digital pin 7 | RS | D7 | LCD Enable pin to digital pin 6 | E | D6 | LCD D4 pin to digital pin 5 | D4 | D5 | LCD D5 pin to digital pin 4 | D5 | D4 | LCD D6 pin to digital pin 3 | D6 | D3 | LCD D7 pin to digital pin 2 | D7 | D2 | LCD R/W pin to ground | R/W | GND | -------------------*/
#include <VirtualWire.h> // use Virtual library for decode signal from Rx module
#include <Time.h> // use Time library for control the time between data from receiver// Sensors int Sensor1Data;
int Sensor2Data;
int t1, t2;
float t10, t20;
char StringReceived[21];
// other int led = 13; //pin for LEDint j=1; // count the messagesint timp1, timp2, dt; // times voidsetup() {
lcd.begin(16, 2); // set up the LCD's number of columns and rows: // set the time for record time and valuesetTime(0,0,0,25,9,13); // set time to Saturday 8:29:00am Jan 1 2011pinMode(led, OUTPUT);
lcd.print("Arduino is ready"); // print a text// VirtualWire // Bits per secvw_setup(2000);
// set pin for connect receiver module vw_set_rx_pin(11);
// Start the receiver PLL runningvw_rx_start();
delay (500);
lcd.clear(); // clear the screen
lcd.setCursor(1, 0); // put cursor at colon 2 and row 0 = left/up
lcd.print("niq_ro's rx is"); // print a text
lcd.setCursor(1, 1); // put cursor at colon 0 and row 0 = left/down
lcd.print("ready on 433MHz"); // print a textdelay (2000);
lcd.clear(); // clear the screen
lcd.setCursor(14, 0);
lcd.print("0/");
timp2 = 0;
} // END void setupvoidloop(){
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
//Taking the data from the control baseif (vw_get_message(buf, &buflen))
{
digitalWrite(led, HIGH);
// put the data number from begin
lcd.clear(); // clear the screenif (j<10) lcd.setCursor(14, 0); // put cursor at colon 14 and row 1if ((j>=10) and (j<100)) lcd.setCursor(13, 0); // put cursor at colon 13 and row 1if ((j>=100) and (j<1000)) lcd.setCursor(12, 0); // put cursor at colon 12 and row 1if ((j>=1000) and (j<10000)) lcd.setCursor(11, 0); // put cursor at colon 11 and row 1
lcd.print(j);
lcd.print("/");
int i;
// Message with a good checksum received, dump it. for (i = 0; i < buflen; i++)
{
// Fill Sensor1CharMsg Char array with corresponding // chars from buffer.
StringReceived[i] = char(buf[i]);
// Serial.print(StringReceived[i]);
}
sscanf(StringReceived, "%d,%d",&Sensor1Data, &Sensor2Data); // Converts a string to an arraydigitalWrite(led, LOW);
t1 = Sensor1Data;
t2 = Sensor2Data;
t10 = (100.0*(5.0*t1/1023.0-2.980)+25.0)-1.0;
t20 = (100.0*(5.0*t2/1023.0-2.980)+25.0);
lcd.setCursor(0, 0);
lcd.print("t1=");
if (t10<10) lcd.print(" ");
if (t10>0.0) lcd.print("+");
lcd.print(t10,1);
lcd.write(0b11011111);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("t2=");
if (t20<10) lcd.print(" ");
if (t20>0.0) lcd.print("+");
lcd.print(t20,1);
lcd.write(0b11011111);
lcd.print("C");
timp2 = timp1; // new time replace olt time;
j=j++; // count the message
memset( StringReceived, 0, sizeof( StringReceived));// This line is for reset the StringReceived
}
// calculate time from last data received
timp1 = hour()*3600 + minute()*60 + second();
dt = timp1-timp2;
if (dt<10) lcd.setCursor(14, 1); // put cursor at colon 14 and row 1if ((dt>=10) and (dt<100)) lcd.setCursor(13, 1); // put cursor at colon 13 and row 1if ((dt>=100) and (dt<1000)) lcd.setCursor(12, 1); // put cursor at colon 12 and row 1if ((dt>=1000) and (dt<10000)) lcd.setCursor(11, 1); // put cursor at colon 11 and row 1
lcd.print(dt);
lcd.print("s");
}
