C reference manual

Javier;

Many of the cheap demo boards do not include the eval version of the Keil compiler. Do you have the compiler in your Keil demo toolset?

The online manuals for the Keil ARM tools are located at this URL on the Keil website.

Bradford

http://www.keil.com/support/man_arm.htm

Thank you for your response Al

I have downloaded the MDK-ARM lite from here http://www.keil.com/arm/mdk.asp

I reviewed the examples, but my question it's where can i see the register and functions in C??

For example: the blinky example has this code:

#include <LPC21xx.H>                       /* LPC21xx definitions */

void wait (void)  {                        /* wait function */
  int  d;

  for (d = 0; d < 1000000; d++);           /* only to delay for LED flashes */
}

int main (void) {
  unsigned int i;                          /* LED var */

  IODIR1 = 0x00FF0000;                     /* P1.16..23 defined as Outputs */

  while (1)  {                             /* Loop forever */
    for (i = 1<<16; i < 1<<23; i <<= 1) {  /* Blink LED 0,1,2,3,4,5,6 */
      IOSET1 = i;                          /* Turn on LED */
      wait ();                             /* call wait function */
      IOCLR1 = i;                          /* Turn off LED */
    }
    for (i = 1<<23; i > 1<<16; i >>=1 ) {  /* Blink LED 7,6,5,4,3,2,1 */
      IOSET1 = i;                          /* Turn on LED */
      wait ();                             /* call wait function */
      IOCLR1 = i;                          /* Turn off LED */
    }
  }
}

My doubt is : Where is the manual where these functions are documented? how can i know that iodir1 is the input/output register and stuff like that?

Your code don't contain any functions that you can expect documentation for in any manual.

But the processor manufacturer will have the required documentation about the processor - which register controls different I/O pins etc. Depending on manufacturer, it's normally called user manual or datasheet. Also look for application notes and code bundles. This site also have a bit of documentation available.

Not sure what you're seeking here:

Do you want to learn the 'C' programming language?
If so, any standard textbook will do for that:
blog.antronics.co.uk/.../

Do you want to know the specific implementation details of Keil's tools?
If so, the Keil Manuals are what you need:
http://www.keil.com/support/man_arm.htm

Do you want to know specific details of the STM32 chip?
If so, the Manufacturer's Documentation is what you need:
http://www.st.com/stm32

Wait a minute!

I am new in the arm enviroment and i want to learn about these, so i bought a cheap chinese board with a st32 arm cortex m3 inside.

#include <LPC21xx.H>                       /* LPC21xx definitions */

void wait (void)  {                        /* wait function */
  int  d;

  for (d = 0; d < 1000000; d++);           /* only to delay for LED flashes */
}