I design and make a board using CM3.But when I power the board first time, I can't download the code to the MCU.
The IDE is Keil uVision4,and it says ,"could not initialize the target device. please power cycle the board and try again" and "flash download failed target DLL cancelled".
I test the vcc, it is 3.3v right. What's the problem? Is it wrong with the Crystal , the MCU , the configuration of the keil, or others?
PS: I USE LM3S6950 in the design, and the circuit refer to the TI evaluate kit board.
You appear to have a JTAG communication failure. This could be caused by many things. Here are a few to look at.
In reply to Stellaris Dexter:
Thanks! I forgot to pull up on PB7/TRSTn ! The problem is solved.
In reply to Roger57288:
Am facing same problem with TM4C1294gxl. Initially the program was running correctly but after few other debugging sessions this error appeared.
I am new to this board and just programmed it with blinky program using gpio port pn0 and pn1
In reply to SHUBHAM SAXENA:
In reply to cb1:
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