The3dman

Hi all, I'm having some problems to use the lcd display "Grove - OLED Display 128*64" (http://www.seeedstud..._Display_128*64). It uses a I2C bus with address "0x3c". I wrote this code to power on it: namespace i2cExample { public class Program { public static void Main() { Debug.Print("Start..."); byte address = 0x3c; seed_Display myDisplay = new seed_Display(address); myDisplay.init(); Thread.Sleep(Timeout.Infinite); } } public class seed_Display { byte SeeedOLED_Display_Off_Cmd = 0xAE; byte SeeedOLED_Display_On_Cmd = 0xAF; byte SeeedOLED_Normal_Display_Cmd = 0xA6; byte SeeedOLED_Inverse_Display_Cmd = 0xA7; I2CDevice.Configuration config; I2CDevice device; int transactionTimeout = 100; // timeout in ms public seed_Display(byte address) { config = new I2CDevice.Configuration( address, //address 100 //clockrate in KHz ); device = new I2CDevice(config); } public void init() { sendCommand(SeeedOLED_Display_Off_Cmd); //display off // Thread.Sleep(1); sendCommand(SeeedOLED_Display_On_Cmd); //display on //Thread.Sleep(1); sendCommand(SeeedOLED_Normal_Display_Cmd); //Set Normal Display (default) // Thread.Sleep(1); sendCommand(SeeedOLED_Inverse_Display_Cmd); //Set inverse brightness } public void sendCommand(byte Command) { byte[] command = new byte[] { Command }; I2CDevice.I2CWriteTransaction writeTransaction = I2CDevice.CreateWriteTransaction(command); //execute transaction I2CDevice.I2CTransaction[] transactions = new I2CDevice.I2CTransaction[] { writeTransaction}; int transferred = 0; transferred = device.Execute(transactions, this.transactionTimeout //timeout in ms ); if (transferred != 1) { Debug.Print("sendCommand, transferred: " + transferred + " command: " + Command); //throw new Exception("Could not write to device"); } } } } After I run this code, nothing happened. I expected the display to power on and then to invert brightness. At least I was expecting some sign... So I ran a test with a logic analyzer (Ikalogic-2). I made a test running the analyzer at 10 MHZ. The results (in attachment) are positive, it seems that the display is responding correctly to the commands that I send. Then where is the problem? I can't see it, I can only immagine that the screen is damage so far. I tried also: - to change the address and in that case there was no ack. - to use a clock rate of 10khz instead of 100khz, non change - to put a pause between commands, nothing

Hi all, After a long debug (with tens of Debug.Print) of my simple web client application, now It seems to work . So I want to deploy a release code on my netduino plus. In in the Properties window, 1) I set: - Configuration: release under .NET Micro Framework tab - Configuration: release under Debug tab - Configuration: release under Build tab - Output path: \bin\Release under Build tab 2) then I open the Configuration manager from the solution Explorer and from the project list I set my project's configuration as Release 3) Now I can run build solution and deploy directly from the Solution Explorer Is this the correct way to do that? Are there other settings I should care of? Thanks, Andrea

Hi all, I'm having some problems in using the ethernet connection with my netduino plus. I'm running a simple http client that send some informations to a web server. If a power up my netduino with the ethernet cable connected, then everything works. I can also unplug the cable and plug again it after a while withouot problems. If a power up my netduino without the cable and then I connect it after a while, nothing works. I think that it could be a problem with dhcp or with the firmware. I'm using 4.2.0 firmware Andrea.