i'm using a camera with the OV528 chip and there is a class for it and it works!

just been playing with a ttl camera based on the OV528 chip. Taking a 640x480 jpg takes about 15 seconds. Is this typical? is there any faster cameras out there?

with have the new batch and ive upgraded to 4.2.2. also updated the netdunino sdk. ive already got the 4.2 qef sdk installed but when i try to deploy my old netdunino plus code to the plus 2 it fails!!!! please help

got it going but ive got an issue which im not sure about yet but i tried to go back to my plus 1 and now it wont deploy to that!!!! we have devices with version 1 out there

 serialPort = new SerialPort("COM2", 38400, Parity.None, 8, StopBits.One);

hi, sorry. its noting special

changing the baud rate

 public bool ChangeBaudRate(Baud baudRate)        {            byte b1= 0x2A,b2= 0xF2;            switch (baudRate)            {                case Baud.B57600:                    b1 = 0x1C;                    b2 = 0x4C;                    break;                case Baud.B115200:                    b1 = 0x0D;                    b2 = 0xA6;                    break;            }            byte[] outbuff = new byte[] { 0x56, 0x00, 0x24, 0x03, 0x01, b1, b2 };            serialPort.Write(outbuff, 0, 7);            byte[] inbuff = WaitForResponse(5, 50);            if ((inbuff[0] == 0x76) && (inbuff[2] == 0x24))            {                serialPort.Close();                serialPort.BaudRate = 115200;                serialPort.Open();                return true;            }            return false;        }

I dont think its the com port as i did a loop back test and it seemed ok but 100% sure.

i dont a small project which basically sets up the camera, takes a pic and returns the pic as a byte array and yes the same issue is there.

 

public byte[] GetImageData(int imagelength)        {            byte bdelay1 = 0x00;            byte bdelay2 = 0x0A;            byte bPos1 = 0x00;            byte bPos2 = 0x00;            // datalength of 496. Camera transfer maximum 512 bytes at a time. Each packet has 5 bytes at the start and 5 at the end            // and the datalength must be a multiple of 8. So 496 is the biggest we can have            byte bLen1 = 0x01;            byte bLen2 = 0xF0;            byte[] outbuff = new byte[] { 0x56, 0x00, 0x32, 0x0C, 0x00, 0x0A, 0x00, 0x00, bPos1, bPos2, 0x00, 0x00, bLen1, bLen2, bdelay1, bdelay2 };            int numPackets = imagelength / 496;            if (imagelength > (numPackets * 496)) numPackets += 1;            byte[] imageData = new byte[imagelength];            for (int i = 0; i < numPackets; i++)            {                int pos = i*496;                // Ask for the next packet                outbuff[8] = (byte)(pos >> 8);                outbuff[9] = (byte)(pos & 0xFF);                serialPort.Write(outbuff, 0, outbuff.Length);                int bytesToRead = 506;                if ((imagelength - pos) < 496)                {                    bytesToRead = (imagelength - pos) + 10;                }                WaitForData(bytesToRead, 100, imageData, pos);            }            StopPic();            return imageData;        }

as i step over the code the debug line dissapear when i do a serial.write and it looks like the system has crashed as there is nothing else i can do!

thanks mark but with we need more than 10 and need to get this working on the 2's as it will benefit everyone as there is an issue here. like i said it works fine the np1 and falls over on the np2.

            byte[] outbuff = new byte[] { 0x56, 0x00, 0x32, 0x0C, 0x00, 0x0A, 0x00, 0x00, bPos1, bPos2, 0x00, 0x00, bLen1, bLen2, bdelay1, bdelay2 };            int numPackets = imagelength / 496;            if (imagelength > (numPackets * 496)) numPackets += 1;            byte[] imageData = new byte[imagelength];            for (int i = 0; i < numPackets; i++)            {                int pos = i*496;                // Ask for the next packet                outbuff[8] = (byte)(pos >> 8);                outbuff[9] = (byte)(pos & 0xFF);                serialPort.Write(outbuff, 0, outbuff.Length);                int bytesToRead = 506;

 

as soon as you step over the last line, thats it! no more debugging and the program has crashed!

Adafruit was the place we got the plus 2's from because no where in the UK had enough stock and no stock of the plus 1's. We went for the Plus 2 thinking it would be a direct drop in replacement.

 

The funny thing is ive put my shield back on the plus 1 and its working as well as can be expected. Stick on the plus 2 the com2 and debugging is a nightmare.

 

Com 2 is set to 38400 initally until i set up the camera and the camera the baud rate to use is 115200. Then i close the port, change the baud rate and then re-open it. Any other comms after returns 0 bytes to read!

cant test on another com port as its a sheild. Works fine the plus 1 and there are a few deployed at our customers

 

One the plus 2 it seems the debugging is terrible. you step over while bugging and nothing happens!!! its hard to explain

 

I wish i never brought the plus 2 now but no where stocked the plus 1. im a tight dead line and these kind of hassles is not what i need right now!

compared to plus 1 the com port 2 is not behaving correctly. we got a serial camera attached and it does not get any data when we asked for it  or when we write a buffer it just hangs!!!  (Baud rate 115200)

Dave thanks very much option b seems to the best and the most easy to implement

I've a log file which i append to every so often. (Thats the easy bit)

 

What i want to do is if its gets above a certain size then delete the old 1 st line before add the latest line to the bottom of the file.

 

Is there a way of doing this? i cant exactly read the whole file as i will run out memory

Sorry if this has been discussed before but ive searched for a solution for this and was unable to come with a answer.

 

I've got a project in VS and i want to deploy across various target boards but i want to pass this task to another member of the team but i dont wish for him to have the source code.

 

Is there a way of the deploying the output binaries to the target device i.e. MFDeploy.

oh ok.

 

cool. i checked about last month for a solution.

 

It might be best to make it a sticky somewhere or part of a FAO.

I need to monitor a state of some 28VAC lines.

 

Hows the best way to do this?

 

I know i need a full bridge, some smoothing and a opto coupler but the bit inbetween the smoothing and opto im stuck on.

Thanks for the replies

 

Im aware of the 3700 but its expensive and im having to use components that if it becomes obsolete it can easily be replaced.

 

I've a circuit diagram which should do what i need

we are interfacing to some equipment so there are several inputs of 28VAC so using transformers and regulators is out of the question. The response needs to be pretty darn quick too. Basically its to detect a presence.

 

I know PLC's have AC/DC inputs, so i kinda need that input stage fitted to my NP2

Thats what I've used but like i said it hangs on the assembly.load and does not return my app just hangs

I'm trying to do the above. it was working ages ago but now all of a sudden my app just hangs!

            byte[] assemblyData = GotSDCard ? File.ReadAllBytes(filename) : ServerHelper.DownloadFile(filename);
            if (assemblyData == null)
                throw new Exception("Assembly was empty");
            try
            {
                Assembly assm = Assembly.Load(assemblyData);
                Debug.Print("loaded Assembly: " + filename);

it hangs on the Assembly.Load call.

In the output window i get

The debugging target runtime is loading the application assemblies and starting execution.
'Microsoft.SPOT.Debugger.CorDebug.dll' (Managed): Loaded 'C:\Program Files (x86)\Secret Labs\Netduino SDK\Assemblies\v4.2\le\SecretLabs.NETMF.Hardware.NetduinoPlus.dll', Symbols loaded.

How can i fix this or see whats going on?

we could have 100 of these suckers attached to a webserver and it would be nice if the webserver pushed the firmware update.

would love to but it's a commerical project. I'm scrapping this now as I've spent too much time on it. Just wish this device could do OTA updates. Now got to work on a RS422 interface

its the same size and im using the little endian file. it wont even load it from the sd card if i manually copied the pe file.