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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-01-19 02:00:14 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-01-19 02:00:14 +0000 |
commit | 3de104fec53509a9a5a3475e63591c627cce094b (patch) | |
tree | dd7ecdf809baa0417695985aa32159537e28830d /nuttx/arch | |
parent | ccc33eb4d31331212de451f701e6d69c0f40ffbf (diff) | |
download | px4-nuttx-3de104fec53509a9a5a3475e63591c627cce094b.tar.gz px4-nuttx-3de104fec53509a9a5a3475e63591c627cce094b.tar.bz2 px4-nuttx-3de104fec53509a9a5a3475e63591c627cce094b.zip |
Add beginning of SAM3U GPIO config logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2512 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch')
-rwxr-xr-x | nuttx/arch/arm/src/sam3u/sam3u_internal.h | 129 | ||||
-rwxr-xr-x | nuttx/arch/arm/src/sam3u/sam3u_pio.h | 2 |
2 files changed, 129 insertions, 2 deletions
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_internal.h b/nuttx/arch/arm/src/sam3u/sam3u_internal.h index 3eace01ce..b6fa996ba 100755 --- a/nuttx/arch/arm/src/sam3u/sam3u_internal.h +++ b/nuttx/arch/arm/src/sam3u/sam3u_internal.h @@ -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) } diff --git a/nuttx/arch/arm/src/sam3u/sam3u_pio.h b/nuttx/arch/arm/src/sam3u/sam3u_pio.h index 887bdc1d7..165b2e663 100755 --- a/nuttx/arch/arm/src/sam3u/sam3u_pio.h +++ b/nuttx/arch/arm/src/sam3u/sam3u_pio.h @@ -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)
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