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Re: How to create a GPIO driver
A useful document is the LPC17xx User manual:
http://www.nxp.com/documents/user_manual/UM10360.pdf
See chapter 9: LPC17xx General Purpose Input/Output (GPIO).
It is also a good idea to read:
Chapter 1: Introductory Information
Chapter 2: Memory Map
Here is an example of how I use the STM32 related functions to do GPIO:
#include <cyg/hal/var_io.h>
cyg_uint32 v_led_ok = CYGHWR_HAL_STM32_PIN_OUT(B, 14, OPENDRAIN, NONE, 2MHZ);
// Turn the LED on
CYGHWR_HAL_STM32_GPIO_OUT(v_led_ok, 1);
// Turn the LED off
CYGHWR_HAL_STM32_GPIO_OUT(v_led_ok, 0);
See ./packages/hal/cortexm/stm32/var/current/include/var_io_pins.h for details.
Using the user manual above and the ideas used by the STM32, you can create comparable functionality for the LPC1xxx family.
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On Mar 14, 2013, at 8:35 AM, EnneGi <enricogiordano1992@gmail.com> wrote:
Ok, so how I locate GPIO register in this way?
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