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Add beginning of SAM3U GPIO config logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2512 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-01-19 02:00:14 +00:00
parent 996d7e3127
commit e2c33844ea
2 changed files with 129 additions and 2 deletions
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129
arch/arm/src/sam3u/sam3u_internal.h
View File

@ -55,7 +55,90 @@
/* Configuration ********************************************************************/
/* NVIC priority levels *************************************************************/
/* Bit-encoded input to sam3u_configgpio() ******************************************/
/* 16-bit Encoding:
* MMCC C... VPPB BBBB
*/
/* Input/Output mode:
*
* MM.. .... .... ....
*/
#define GPIO_CFG_SHIFT (14) /* Bits 14-15: GPIO mode */
#define GPIO_CFG_MASK (3 << GPIO_CNF_SHIFT)
# define GPIO_INPUT (0 << GPIO_CNF_SHIFT) /* Input */
# define GPIO_OUTPUT (1 << GPIO_CNF_SHIFT) /* Output */
# define GPIO_PERIPHA (2 << GPIO_CNF_SHIFT) /* Controlled by periph A signal */
# define GPIO_PERIPHB (3 << GPIO_CNF_SHIFT) /* Controlled by periph B signal */
/* These bits set the configuration of the pin:
* ..CC C... .... ....
*/
#define GPIO_CFG_SHIFT (11) /* Bits 11-13: GPIO configuration bits */
#define GPIO_CFG_MASK (3 << GPIO_CNF_SHIFT)
# define GPIO_CFG_DEFAULT (0 << GPIO_CNF_SHIFT) /* Default, no attribute */
# define GPIO_CFG_PULLUP (1 << GPIO_CNF_SHIFT) /* Bit 11: Internal pull-up */
# define GPIO_CFG_DEGLITCH (2 << GPIO_CNF_SHIFT) /* Bit 12: Internal glitch filter */
# define GPIO_CFG_OPENDRAIN (4 << GPIO_CNF_SHIFT) /* Bit 13: Open drain */
/* If the pin is an GPIO output, then this identifies the initial output value:
* .... .... V... ....
*/
#define GPIO_OUTPUT_SET (1 << 7) /* Bit 7: Inital value of output */
#define GPIO_OUTPUT_CLEAR (0)
/* This identifies the GPIO port:
* .... .... .PP. ....
*/
#define GPIO_PORT_SHIFT (5) /* Bit 5-6: Port number */
#define GPIO_PORT_MASK (3 << GPIO_PORT_SHIFT)
# define GPIO_PORT_PIOA (0 << GPIO_CNF_SHIFT)
# define GPIO_PORT_PIOB (1 << GPIO_CNF_SHIFT)
# define GPIO_PORT_PIOC (2 << GPIO_CNF_SHIFT)
/* This identifies the bit in the port:
* .... .... ...B BBBB
*/
#define GPIO_PIN_SHIFT 0 /* Bits 0-3: GPIO number: 0-15 */
#define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN0 (0 << GPIO_PIN_SHIFT)
#define GPIO_PIN1 (1 << GPIO_PIN_SHIFT)
#define GPIO_PIN2 (2 << GPIO_PIN_SHIFT)
#define GPIO_PIN3 (3 << GPIO_PIN_SHIFT)
#define GPIO_PIN4 (4 << GPIO_PIN_SHIFT)
#define GPIO_PIN5 (5 << GPIO_PIN_SHIFT)
#define GPIO_PIN6 (6 << GPIO_PIN_SHIFT)
#define GPIO_PIN7 (7 << GPIO_PIN_SHIFT)
#define GPIO_PIN8 (8 << GPIO_PIN_SHIFT)
#define GPIO_PIN9 (9 << GPIO_PIN_SHIFT)
#define GPIO_PIN10 (10 << GPIO_PIN_SHIFT)
#define GPIO_PIN11 (11 << GPIO_PIN_SHIFT)
#define GPIO_PIN12 (12 << GPIO_PIN_SHIFT)
#define GPIO_PIN13 (13 << GPIO_PIN_SHIFT)
#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN16 (16 << GPIO_PIN_SHIFT)
#define GPIO_PIN17 (17 << GPIO_PIN_SHIFT)
#define GPIO_PIN18 (18 << GPIO_PIN_SHIFT)
#define GPIO_PIN19 (19 << GPIO_PIN_SHIFT)
#define GPIO_PIN20 (20 << GPIO_PIN_SHIFT)
#define GPIO_PIN21 (21 << GPIO_PIN_SHIFT)
#define GPIO_PIN22 (22 << GPIO_PIN_SHIFT)
#define GPIO_PIN23 (23 << GPIO_PIN_SHIFT)
#define GPIO_PIN24 (24 << GPIO_PIN_SHIFT)
#define GPIO_PIN25 (25 << GPIO_PIN_SHIFT)
#define GPIO_PIN26 (26 << GPIO_PIN_SHIFT)
#define GPIO_PIN27 (27 << GPIO_PIN_SHIFT)
#define GPIO_PIN28 (28 << GPIO_PIN_SHIFT)
#define GPIO_PIN29 (29 << GPIO_PIN_SHIFT)
#define GPIO_PIN30 (30 << GPIO_PIN_SHIFT)
#define GPIO_PIN31 (31 << GPIO_PIN_SHIFT)
/************************************************************************************
* Public Types
@ -110,6 +193,50 @@ EXTERN void sam3u_clockconfig(void);
EXTERN void sam3u_lowsetup(void);
/************************************************************************************
* Name: sam3u_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
EXTERN int sam3u_configgpio(uint16_t cfgset);
/************************************************************************************
* Name: sam3u_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
EXTERN void sam3u_gpiowrite(uint16_t pinset, bool value);
/************************************************************************************
* Name: sam3u_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
EXTERN bool sam3u_gpioread(uint16_t pinset);
/************************************************************************************
* Function: sam3u_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the port of the provided pin description.
*
************************************************************************************/
#ifdef CONFIG_DEBUG
EXTERN int sam3u_dumpgpio(uint16_t pinset, const char *msg);
#else
# define sam3u_dumpgpio(p,m)
#endif
#undef EXTERN
#if defined(__cplusplus)
}

2
arch/arm/src/sam3u/sam3u_pio.h
View File

@ -112,7 +112,7 @@
#define PIOA (0)
#define PIOB (1)
#define PIOB (2)
#define PIOC (2)
#define SAM3U_PIO_PER(n) (SAM3U_PIO_BASE(n)+SAM3U_PIO_PER_OFFSET)
#define SAM3U_PIO_PDR(n) (SAM3U_PIO_BASE(n)+SAM3U_PIO_PDR_OFFSET)