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Writing 4 bytes to COM Port
Hello all,
I have a device that has 8 switches (relay). This device has controller which is linked to COM Port. In order to manipulate switches first the device needs to be intialized with 4 bytes: 1 1 0 and the fourth is XOR of these first three, (0). So I need to send 1 1 0 0 in order to intialize this device. I've tried to open com port and write this as characthers: "00000001 00000001 00000000 00000000" - (no space between) There is also some kind of driver, a monitor tool that monitors traffic between PC and the device. This monitor after sending above string says that only 2 bytes are sent. The device will not respond until 4 bytes are sent. Does anybody have any clues that can be useful? I've searched everywhere but nothing to solve it, so I am trying my luck here Thanks in advance, asmith [added]: tried with c and yes it is char type Last edited by AgentSmith; 04-06-2005 at 23:33. |
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