You can use a terminal program to coax the SLCD into telling you what’s there. Now your bitmaps and macros are in the SLCD.
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bin file from your PC and then connect to your SLCD. Here’s a way to capture those macros and bitmaps: bin file? Now you need to make a change, and can’t get the consultant to do it in time because of other commitments, vacations, etc. We had a consultant generate our bitmaps and macros, and then left us only with the.
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Find more information in the AN_107 Advanced Driver Options application note. A similar mechanism exists for writing (PC to chip) data called buffered writes. To reduce the time to receive (chip to PC) smaller chunks of data the latency timer can be reduced to 2ms (default 16ms) and the InTransferSize can be reduced to 64 bytes (default 4096) by modifying the FTDIPORT.INF file found in the driver folder.
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The USB-serial chip on our board (FTDI) allows for configuration of these timeouts so the speed should be at least the equivalent of the legacy serial port if not better.
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If the application is sending one byte at a time, it is very inefficient for USB as it waits for the buffer to fill up and complete a full packet or waits for a timeout to send a short packet. A serial port can send data on a byte-per-byte basis whereas the USB sends data in packets. However, there are significant differences in the configuration of a serial port and a USB port. In general, users will not see any difference when switching from a PC serial port to a USB Virtual Com Port (VCP). You could also setup select_menu to accept a parameter which is the desired menu, and it would look like the following (barely different than above). display or report parameter error t "!! Invalid parameter !!" 100 100 Macro select_menu turns i0 into a label with an ‘m’ pre-pended, and this is used in the call to display_menu.
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Your code would set i0 to the desired value, then call macro select_menu. The variable i0 would hold the state, 0-3. You could implement this with a couple of macros and an integer variable. For example, let’s say you can present the user with four different menus depending on some sort of state variable. However, you can approximate it with the macro label feature. To see the problem, put an oscilloscope on the controller power input and set the trigger at 10% less than the nominal input voltage. Long thin power cables have inductance which can cause voltage sags when there is a change in current. The solution is to shorten the cable between the power source and the controller or use larger cable wires. This can make it look like the display is flashing since it turns on the backlight and then resets, and keeps doing this as long as power is applied. The display backlight draws a lot of power, and when it turns on, the controller input voltage can sag and cause the controller to reset and turn off the backlight. This reset happens when the input voltage to the controller sags (dips down below 10% of nominal). Sometimes called brown-out protection, this trigger ensures the controller’s processor does not incorrectly execute and possibly change its internal programming when it loses power.