Hi everyone,
I'm new in the world of arm and microcontrollers, and I'm facing a weird problem. I've uploaded my code into the flash memory, and it works just fine. But when I disconnect the UART utilized to burn it, the program stops running. I would really appreciate if anyone could help me. I know this might be a dumb question, but like I said, I'm new with that. So that's it. Thanks in advance.
Rodrigo
So how did you connect this UART?
Does the reset and EINT2 signals go to handshake signals on the UART, to allow FlashMagic to reset the board and enter the boot loader? In that case - are these two signals holding a proper signal level when the UART adapter/cable isn't connected?
Well, the UART is connected normally, I dont that is a hardware problem because Im working with a pattern board, I've searching about it and I think that maybe there is a flag in one of the registers, but I really don't know. Do you know anything about that ?
a common issue about "works only when the cable connected" is a ground missing or 'bad' the effect of which does not exist when the cables ground 'takes over'
Erik
But Erik, when the uart is disconnected, the led or lcd wich was being used in the code, still in high level, but when I send the command to clear it, it doesn't works, so I think that ground isn't the problem. Do you know anything else that might be ?
uart is disconnected, .... I send the command how?
Using a push button. The code is turn a led on while the push button is in level 1. But if I disconnect the cable, the program doesn't run normally.