Hi EnneGi,
You may want to use the CYGHWR_HAL_LPC1XXX_GPIO_SET(…),
CYGHWR_HAL_LPC1XXX_GPIO_OUT(…), and CYGHWR_HAL_LPC1XXX_GPIO_IN(…) macros.
I have found it useful to grep the eCos code base for examples of how to use
macros, etc.
For examples, you can see code that uses them here:
./packages/hal/cortexm/lpc1xxx/var/v3_1_33/src/lpc1xxx_misc.c
./packages/devs/eth/arm/lpc2xxx/v3_1_33/src/if_lpc2xxx-lwip.c
Here are the related macros for the LPC1766, found in:
.../packages/hal/cortexm/lpc1xxx/var/v3_1_33/include/var_io.h:
// This macro packs the port number, bit number and mode for a GPIO
// pin into a single word. The packing puts the mode in the ls 8 bits,
// the bit number in 16:20 and the GPIO port number bits 8:10. The
// mode is only specified using the last component of the name to
// keep definitions short.
#define CYGHWR_HAL_LPC1XXX_GPIO(__port, __bit, __mode ) \
(((__port)<< 8) | \
((__bit)<<16) | \
(CYGHWR_HAL_LPC1XXX_GPIO_MODE_##__mode) )
// Macros to extract encoded values
#define CYGHWR_HAL_LPC1XXX_GPIO_PORT(__pin)
(((__pin)&0x00000700)>>8)
#define CYGHWR_HAL_LPC1XXX_GPIO_BIT(__pin)
(((__pin)>>16)&0x1F)
#define CYGHWR_HAL_LPC1XXX_GPIO_MODE(__pin)
((__pin)&0xFF)
#define CYGHWR_HAL_LPC1XXX_GPIO_NONE (0xFFFFFFFF)
// Functions and macros to configure GPIO ports.
__externC void hal_lpc1xxx_gpio_set( cyg_uint32 pin );
__externC void hal_lpc1xxx_gpio_out( cyg_uint32 pin, int val );
__externC void hal_lpc1xxx_gpio_in ( cyg_uint32 pin, int *val );
#define CYGHWR_HAL_LPC1XXX_GPIO_SET(__pin ) hal_lpc1xxx_gpio_set(
__pin )
#define CYGHWR_HAL_LPC1XXX_GPIO_OUT(__pin, __val ) hal_lpc1xxx_gpio_out(
__pin, __val )
#define CYGHWR_HAL_LPC1XXX_GPIO_IN(__pin, __val ) hal_lpc1xxx_gpio_in(
__pin, __val )
Hope this helps.
--Richard
------
On Mar 11, 2013, at 9:52 AM, EnneGi <enricogiordano1...@gmail.com> wrote:
Thanks a lot! So, for my work, I "copy" the instruction of stm32 in the
"var_io.h" file of lpc1766 (changing adress) and define the function of GPIO
set in a file on the directory devs/ right?
--
View this message in context:
http://sourceware-org.1504.n7.nabble.com/How-to-create-a-GPIO-driver-tp224910p225026.html
Sent from the Sourceware - ecos-discuss mailing list archive at Nabble.com.
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
