am sending char * from OF to a teensy board.
Here is my OF code:
void ofApp::draw() {
string message = "";
int total = 1472;
for (int i = 0; i < total; i++) {
message += (char)ofRandom(0,255);
}
udpConnection.SendAll(message.c_str(), message.length());
}
Here is my teensy code:
void loop() {
int packetSize = Udp.parsePacket();
if (packetSize) {
Serial.println("Got it!");
Udp.read((char*)packetBuffer, 648*3);
for (int i = 0; i < 3*NUM_LEDS; i+=3) {
leds[i/3].setRGB(packetBuffer[i], packetBuffer[i+1], packetBuffer[i+2]);
}
FastLED.show();
}
}
The teensy code responds when it receives a packet of any size, which works fine up to 1472 chars. In the OF code, as soon as the length of the char * length is increased to 1473, the teensy stops receiving anything, and I am not getting any run time errors OF-side. Does anyone know why this would happen/what the fix is? I need to scale this up to 1944 chars eventually
Thanks,
Collin
What's the MTU size? 1473 sound close to the default.
You may do some experiment by increase the MTU on both side.
Related
I was given a project to convert from ESP8266 to ESP32, and I'm definitely not a coder, but it needs to get done. So I was hoping I could get some guidance/help on how to solve this issue. I'm basically taking previous code from an old project using an ESP8266 WiFi module and converting it over to a more updated module using ESP32. Been compiling and troubleshooting code as I go the best I can, but this one has stumped me.
The error message I'm getting is "No matching function for call to 'WiFiUDP::beginMulticast(IPAddress, IPAddress&, const unsigned int&)'
There are several pages of code, but this is the .cpp file that is currently throwing up an error, and hoping it's able to be resolved with something on this page. Like I said, I'm not a coder, but I have the basics down. Any help on this would be greatly appreciated. Thanks!
#include "Switch.h"
#include <functional>
// Multicast declarations
IPAddress ipMulti(239, 255, 255, 250);
const unsigned int portMulti = 1900;
char packetBuffer[512];
#define MAX_SWITCHES 14
Switch switches[MAX_SWITCHES] = {};
int numOfSwitchs = 0;
//#define numOfSwitchs (sizeof(switches)/sizeof(Switch)) //array size
//<<constructor>>
UpnpBroadcastResponder::UpnpBroadcastResponder(){
}
//<<destructor>>
UpnpBroadcastResponder::~UpnpBroadcastResponder(){/*nothing to destruct*/}
bool UpnpBroadcastResponder::beginUdpMulticast(){
boolean state = false;
Serial.println("Begin multicast ..");
if(UDP.beginMulticast(WiFi.localIP(), ipMulti, portMulti)) {
Serial.print("Udp multicast server started at ");
Serial.print(ipMulti);
Serial.print(":");
Serial.println(portMulti);
state = true;
}
else{
Serial.println("Connection failed");
}
return state;
}
//Switch *ptrArray;
void UpnpBroadcastResponder::addDevice(Switch& device) {
Serial.print("Adding switch : ");
Serial.print(device.getAlexaInvokeName());
Serial.print(" index : ");
Serial.println(numOfSwitchs);
switches[numOfSwitchs] = device;
numOfSwitchs++;
}
void UpnpBroadcastResponder::serverLoop(){
int packetSize = UDP.parsePacket();
if (packetSize <= 0)
return;
IPAddress senderIP = UDP.remoteIP();
unsigned int senderPort = UDP.remotePort();
// read the packet into the buffer
UDP.read(packetBuffer, packetSize);
// check if this is a M-SEARCH for WeMo device
String request = String((char *)packetBuffer);
if(request.indexOf('M-SEARCH') > 0) {
if(request.indexOf("urn:Belkin:device:**") > 0) {
Serial.println("Got UDP Belkin Request..");
// int arrSize = sizeof(switchs) / sizeof(Switch);
for(int n = 0; n < numOfSwitchs; n++) {
Switch &sw = switches[n];
if (&sw != NULL) {
sw.respondToSearch(senderIP, senderPort);
}
}
}
}
}```
The Arduino UDP API as defined by the UDP base class in Arduino core has
uint8_t beginMulticast(IPAddress, uint16_t);
In esp8266 Arduino WiFi the UDP is modified and the first parameter of beginMulticast specifies the network interface to listen to. (Network interfaces are STA, SoftAP, Ethernet etc)
In esp32 Arduino WiFi library beginMulticast has only the standard parameters and listens on all network interfaces.
Your solution is to remove the first parameter in the beginMulticast call.
I have written simple bluetooth transmitter and receiver on two arduino nano v3 boards. Bluetooth modules are HM-10 connected into hardware serial ports. It works, but on receiver side I often receive corrupted values and many values are missing. Where is a problem:
I am beginner in arduino. If it is possible a need to explain deeply. Thanks.
Transmitter code:
const long waitingInterval = 20000;
unsigned long lastSend = micros();
void setup()
{
Serial.begin(19200);
Serial.println("Started");
}
bool delay() {
if(micros() >= lastSend + waitingInterval) {
lastSend = micros();
return true;
}
return false;
}
void loop()
{
if(delay()) {
String mil = String(millis());
String sendingText = mil + ";" + mil + ";" + mil + ".";
Serial.println(sendingText);
}
}
Output of transmitter serial monitor interface:
10548;10548;10548.
10568;10568;10568.
10589;10589;10589.
10609;10609;10609.
10629;10629;10629.
10649;10649;10649.
10670;10670;10670.
10690;10690;10690.
10711;10711;10711.
10730;10730;10730.
10750;10750;10750.
10771;10771;10771.
10791;10791;10791.
10812;10812;10812.
10831;10831;10831.
10852;10852;10852.
10872;10872;10872.
10893;10893;10893.
10913;10913;10913.
10933;10933;10933.
10953;10953;10953.
10974;10974;10974.
10994;10994;10994.
11014;11014;11014.
11034;11034;11034.
11055;11055;11055.
11075;11075;11075.
11096;11096;11096.
11115;11115;11115.
Receiver code:
void setup() {
Serial.begin(19200);
Serial.println("Started");
}
void loop() {
if(Serial.available()) {
String incomingData = String();
char incomingChar = Serial.read();
if(incomingChar == '.') {
incomingData = bufferString;
Serial.print(bufferString);
bufferString = String();
} else {
bufferString += String(incomingChar);
return;
}
}
Output of receiver serial monitor interface:
10548;10548;10548
10568;10568;10568
10589;10589;10589
10609;10609;10609
10629;10629;10629
106410771
10791;10791;10791
10812;10812;10812
10831;10831;10831
10852;10852;10852
10872;10872;10872
10893;10893;11034;11034;11034
11055;11055;11055
11075;11075;11075
11096;11096;11096
11115;11115;11115
One problem is simply calling Serial.available() simply returns the number of bytes available to be read in the buffer; it could be exactly the number of bytes you need, it could be less, or more. Because of this, you might read extra data, too little, or too much data. More so, in higher level transmission protocols sometimes after a device receives data it will send an ACK(acknowledgement) back to the sender, saying it is ready for more data.
Edit** It should also be noted that the comment talking about mutex's isn't correct. Mutexes are typically used to synchronize code across multiple threads of execution on the same device. The key is that they are a shared resource across the thread's heap space. This is NOT the case when using two different arduino devices; thus, even if you could use them, it would be useless.
For your code, I would suggest the following edits to the transmitter:
#define MIN_TIMEOUT 3
void recieveAck(){
bool validAck = false;
uint8_t timeout_cnt = 0x00;
while(timeout_cnt < MIN_TIMEOUT){
//Wait for receiving device to respond with two bytes then send next
char incomingBytes[2];
Serial.readBytes(incomingBytes, 0x02);
if(incomingBytes[0] == 0xBB && incomingBytes[1] == 0xCC)
break;
timeout_cnt++;
}
}
void loop()
{
if(delay()) {
String mil = String(millis());
String sendingText = mil + ";" + mil + ";" + mil + ".";
Serial.println(sendingText);
recieveAck();
}
}
And to the receiver:
#define NEXT_INC_SIZE 2 //Expects one byte at a time
void sendAck(){
char outData[2];
outData[0] = 0xBB;
outData[1] = 0xCC;
Serial.write(outData, 2); //Write the ack data
}
void loop() {
if(Serial.available() >= NEXT_INC_SIZE){
char incomingBytes[2];
Serial.readByte(incomingBytes, NEXT_INC_SIZE); //Read exactly how many bytes you need
//Do stuff with the data here....
sendAck();
}
}
I have an Arduino Nano piggybacked on a ENC28j60 ethernet module. I have eight (8) DHT22 sensors (named A, B, C ... H ) and i want to write their temperature and humidity data to Pushingbox.
The program is working great with ONE sensor. So that's good. However when i un-remark (i.e. take out the //'s) for anything more than one sensor, yes even for ONE other sensor, it won't write anything at all.
The arduino IDE complier says:
Sketch uses 23824 bytes (77%) of program storage space. Maximum is 30720 bytes.
Global variables use 1870 bytes (91%) of dynamic memory, leaving 178 bytes for local variables. Maximum is 2048 bytes.
Low memory available, stability problems may occur.
FYI, If i un-remark just one other sensor it goes up +2% to 93% of dynamic memory and stops working. So i'm assuming its a memory problem. i have already removed all floats (and made integers *10 to keep one decimal place of accuracy), i need 8 instances of DHT so considered reducing the library size but the .h seems tiny and pretty lean already (within the .h file it even boasts: Very low memory footprint - Very small code. so i havent modified this or the .cpp.
The overall code i have written is not large, maybe there are some in-efficiencies there, but i can't see that it is going to make anything near the amount of memory saving needed for the next 7 sensors.
The full arduino code (written for all 8 sensors, with 'ghosted' bits for 4 sensors and in use only working for one sensor) is below:
#include "DHTesp.h"
//#include <SPI.h>
#include <UIPEthernet.h>
DHTesp dhtA;
//DHTesp dhtB;
//DHTesp dhtC;
//DHTesp dhtD;
//DHTesp dhtE;
//DHTesp dhtF;
//DHTesp dhtG;
//DHTesp dhtH;
const int ledPin = LED_BUILTIN;
int ledState = LOW;
int interval = 10; // this is the number of seconds between reads (120=2mins)
int numReads = 5; // Number of reads between posting to google docs.
int multFact = 10; // multiplication factor 10 = 1 dec. place 100 = 2 dec places
byte mac[] = {0xBE, 0xEF, 0xDE, 0xAD, 0xDE, 0xAD }; //Ethernet shield MAC. Andy's working {0xBE, 0xEF, 0xDE, 0xAD, 0xDE, 0xAD}
byte ip[] = { 192,168,1,12 }; // Arduino device IP address
char devid [] = "vCE3D036xxxxxxxx"; // Gsheets device ID from Pushingbox ('x's for privacy:)
char server[] = "api.pushingbox.com";
EthernetClient client;
void setup()
{
Serial.begin(9600);
Serial.println ("RESTART");
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("Trying to connect...");
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
while(true);
}
else{
Serial.print("OK, connected. Ethernet ready. ");
// print the Ethernet board/shield's IP address:
Serial.print("IP address: ");
Serial.println(Ethernet.localIP());
}
// give the Ethernet shield a second to initialize:
delay(1000);
Serial.println();
//Serial.println("A-Stat\t\tA-Temp (C)\tA-humdid%\tA-HeatI (C)\tB-Stat\t\tB-Temp (C)\tA-humdid%\tB-HeatI (C)");
Serial.println("\t\t\t\tt-A\th-A\tt-B\th-B\tt-C\th-C\tt-D\th-D\tt-E\th-E\tt-F\th-F\tt-G\th-G\tt-H\th-H");
//hey dB for some reason the Ethernet sheild uses pin D2 :( and pins 10,11,12,13
// https://arduinodiy.wordpress.com/2013/04/07/connect-an-enc28j60-ethernet-module-to-an-arduino/
// assign data pins
dhtA.setup(3);
//dhtB.setup(4);
//dhtC.setup(5);
//dhtD.setup(6);
//dhtE.setup(7);
//dhtF.setup(8);
//dhtG.setup(9);
//dhtH.setup(10); //watchout! i think Ethernet uses this pin too?
pinMode(ledPin, OUTPUT);
//end of void setup
}
void loop()
{
int Ahumid = 0; int Atemp = 0;
int Bhumid = 0; int Btemp = 0;
int Chumid = 0; int Ctemp = 0;
int Dhumid = 0; int Dtemp = 0;
//int Ehumid = 0; int Etemp = 0;
//int Fhumid = 0; int Ftemp = 0;
//int Ghumid = 0; int Gtemp = 0;
//int Hhumid = 0; int Htemp = 0;
int j=0;
for (j = 1; j <= numReads ; j++ ) {
int p = 0;
for (p=1; p <= interval ; p++) {
delay (1000);
// swap the led state
if (ledState == LOW) { ledState = HIGH; } else { ledState = LOW; }
Serial.print (p); //show the seconds passing
Serial.print (",");
digitalWrite(ledPin, ledState);
}
Serial.print (" Reading");
Atemp += dhtA.getTemperature()*multFact; Ahumid += dhtA.getHumidity()*multFact;
//Btemp += dhtB.getTemperature()*multFact; Bhumid += dhtB.getHumidity()*multFact;
//Ctemp += dhtC.getTemperature()*multFact; Chumid += dhtC.getHumidity()*multFact;
//Dtemp += dhtD.getTemperature()*multFact; Dhumid += dhtD.getHumidity()*multFact;
// print the readings
//Serial.print(dhtA.getStatusString());
Serial.print("\t"); Serial.print(Atemp);
Serial.print("\t"); Serial.print(Ahumid);
Serial.print("\t"); Serial.print(Btemp);
Serial.print("\t"); Serial.print(Bhumid);
Serial.print("\t"); Serial.print(Ctemp);
Serial.print("\t"); Serial.print(Chumid);
Serial.print("\t"); Serial.print(Dtemp);
Serial.print("\t"); Serial.print(Dhumid);
Serial.println();
// and so here endeth 'j', the number of reads
}
Serial.print ("Avg...");
Atemp = Atemp/numReads; Ahumid = Ahumid/numReads;
Btemp = Btemp/numReads; Bhumid = Bhumid/numReads;
Ctemp = Ctemp/numReads; Chumid = Chumid/numReads;
Dtemp = Dtemp/numReads; Dhumid = Dhumid/numReads;
// print the averages so we can see what it is going to send
Serial.print("\t\t\t");
Serial.print("\t"); Serial.print(Atemp); Serial.print("\t"); Serial.print(Ahumid);
Serial.print("\t"); Serial.print(Btemp); Serial.print("\t"); Serial.print(Bhumid);
Serial.print("\t"); Serial.print(Ctemp); Serial.print("\t"); Serial.print(Chumid);
Serial.print("\t"); Serial.print(Dtemp); Serial.print("\t"); Serial.print(Dhumid);
Serial.println();
Serial.print ("Prep for upload... ");
if (client.connect(server, 80))
{
Serial.print("Connected OK ... writing...");
client.print("GET /pushingbox?devid=");
client.print(devid);
client.print("&tempA="); client.print(Atemp);
client.print("&tempB="); client.print(Btemp);
client.print("&tempC="); client.print(Ctemp);
client.print("&tempD="); client.print(Dtemp);
client.print("&tempE=29&tempF=39&tempG=49&tempH=59");
//now humidity too
client.print("&humidA="); client.print(Ahumid);
client.print("&humidB="); client.print(Bhumid);
client.print("&humidC="); client.print(Chumid);
client.print("&humidD="); client.print(Dhumid);
client.print("&humidE=26&humidF=27&humidG=28&humidH=29");
client.print("&submit=Submit");
client.println(" HTTP/1.1");
client.println("Host: api.pushingbox.com");
client.println("Connection: close");
client.println();
Serial.println("written OK. & connection closed.");
Serial.println(); //Serial.println();
delay(1000); // maybe take this out to keep time stable?
client.stop();
}
else {
Serial.println("** NO CONNEX **"); Serial.println();
}
//here endeth void loop
}
Extra info (that i dont think is relevant, but maybe): IDE compiler also reports:
WARNING: library DHT_sensor_library_for_ESP32 claims to run on [esp32] architecture(s) and may be incompatible with your current board which runs on [avr] architecture(s).
Use the F macro for double-quoted string literal prints. Instead of this:
Serial.println ("RESTART");
or
client.print("GET /pushingbox?devid=");
... do this:
Serial.println ( F("RESTART") );
or
client.print( F("GET /pushingbox?devid=") );
This will easily save a bunch o' RAM.
I would also suggest using the single quoted literal for single characters, not the double quote:
Serial.print( '\t' );
for Debug reasons i want to show my outgoing packets in Console.
The packets arrive at the server correctly btw.
But if i want them to show in Console before sending, then it is showing just nothing:
ACE_Message_Block *m_Header;
...
size_t send_len = m_Header->length(); // Size of the Message Block
char* output = m_Header->rd_ptr();
printf("Output: %s", output); // Trying to show it in Console
// Send it
server.send(m_Header->rd_ptr(), send_len);
Someone has an idea?
Likely the data you send contains 0's - and you'll need to append a newline as well.
for (size_t i = 0; i < send_len; ++i) {
if (output[i]<32) {
printf("\\x%02hhx", (unsigned char) output[i]);
} else {
printf("%c", output[i]);
}
}
printf("\n");
I am trying to get started with pic24's, specifically the PIC24FJ64GA002, and I have looked in the datasheet at the registers and whatnot, but I still cannot get it to blink the leds. When I run it via debug it runs correctly, but when I try to actually run it on the pic it seems to not run at all.
I am using an external Oscillator, a 8MHZ Oscillator specifically, connected to pins 9(OSCI) and 10 (OSCO). Compiler is C30 in Mplab.
Datasheet link is: http://ww1.microchip.com/downloads/en/DeviceDoc/39881D.pdf
The code is below
//include basic header definition
#include <p24FJ64GA002.h>
//config
_CONFIG2(0x0200);
_CONFIG1(0x0800);
int i;
//main loop
int main(void)
{
OSCCON = 0x2280; //select external OSC, no PLL
AD1PCFG = 0xFFFF; //set to all digital I/O
TRISA = 0x0000; //configure all PortA as output
while(1) //Loop forever
{
LATAbits.LATA0 = 1; //RA0 = 1
Wait();
LATAbits.LATA0 = 1; //RA0 = 1
Wait();
}
}
int Wait(void) // gives me a nice delay of 1/3rd a second or so
{
for (int i = 0; i < 30000; i++)
{
for (int i = 0; i < 30; i++);
}
}
You need to go hi, wait, then lo, wait... you are just going hi, wait, hi, wait.
while(1) //Loop forever
{
LATAbits.LATA0 = 1; //RA0 = 1
Wait();
LATAbits.LATA0 = 0; //RA0 = 1
Wait();
}
What optimization level are you compiling with? If it's only working in debug, it's possible the optimizer is reducing the whole Wait() function to a no-op. Try declaring `volatile int i'.
Thank you guys for all your help, but it was that I set the config bits wrong, when I set them in the config editor in mplab all works well.
Thank you for all your help!