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printf fprintf minib

Giacomo Costa

Hello, I am using STM32F407 Discovery, and would like to send data to the computer without the USART cable (I am only using USB-MiniB cable).

So to view the voltage read by the ADC (of STM32F4) I use printf function, as follows:

int fputc(int c, FILE *stream)
{ return(ITM_SendChar(c));
}

printf(...)

Since I need to read then the voltage values on the computer (by matlab), how can I access the debug serial viewer? Or how can I retarget the printf function to write data in a txt file?

I tried also to use fopen,fprintf but it is not working.

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