[ECOS] Re: How to create a GPIO driver

[EnneGi <enricogiordano1992@gmail.com>]

thanks for reply. Now I describe my steps:

- found explicit address of gpio in the file lpc17xx.h at this url:
http://www.keil.com/dd/docs/arm/nxp/lpc17xx/lpc17xx.h
(search   "Peripheral memory map")

- copy the address in the "var_io.h" of the stm32 in the "#define" of gpio
and copy the part of source that I modify in the "var_io.h" in "the
var_io.h" of lpc1766stk

- compile ecos with 
   ecosconfig new lpc1766stk
   ecosconfig tree
   make

- try an application of gpio


<cyg/hal/var_io.h>

int main (void)
{
    hal_LPC17XX_gpio_set(/*here I put the address*/);
    hal_LPC17XX_gpio_out(/*here I put the address*/, 0);

}


I think that gpio (associated to led) send value 0 in the output.



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