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SAMD20: Add port configuration logic

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This commit is contained in:
Gregory Nutt
2014-02-13 12:44:22 -06:00
parent 12e96b8f51
commit 69ffc4a351
4 changed files with 568 additions and 35 deletions
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arch/arm/src/samd/Make.defs
+1 -1
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@@ -68,7 +68,7 @@ CMN_CSRCS += up_dumpnvic.c
endif
CHIP_ASRCS =
CHIP_CSRCS = sam_idle.c sam_irq.c sam_start.c sam_timerisr.c
CHIP_CSRCS = sam_idle.c sam_irq.c sam_port.c sam_start.c sam_timerisr.c
ifeq ($(CONFIG_NUTTX_KERNEL),y)
CHIP_CSRCS += sam_userspace.c
arch/arm/src/samd/chip/sam_port.h
+5
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@@ -49,6 +49,10 @@
********************************************************************************************/
/* PORT register offsets ********************************************************************/
#define SAM_PORTA (0)
#define SAM_PORTB (1)
#define SAM_PORTN_OFFSET(n) (0x0000 + ((n) << 7))
#define SAM_PORTA_OFFSET 0x0000 /* Port A register offset */
#define SAM_PORTB_OFFSET 0x0080 /* Port B register offset */
@@ -118,6 +122,7 @@
/* PORT register addresses ******************************************************************/
#define SAM_PORTN_BASE(n) (SAM_PORT_BASE+SAM_PORTN_OFFSET(n))
#define SAM_PORTA_BASE (SAM_PORT_BASE+SAM_PORTA_OFFSET)
#define SAM_PORTB_BASE (SAM_PORT_BASE+SAM_PORTB_OFFSET)
arch/arm/src/samd/sam_port.c
+549
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File diff suppressed because it is too large Load Diff
arch/arm/src/samd/sam_port.h
+13 -34
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@@ -67,11 +67,11 @@
* 2222 1111 1111 1100 0000 0000
* 3210 9876 5432 1098 7654 3210
* ------------ -----------------------------
* PORT Input: MMRR .... .SB. II.. ..PB BBBB
* PORT Input: MMRR .... .S.. .... ..PB BBBB
* PORT Output: MM.. .... D..V .... ..PB BBBB
* Peripheral: MM.. FFF. .... II.. ..PB BBBB
* ------------ -----------------------------
* MMRR FFF. DSBV II.. ..PB BBBB
* MMRR FFF. DS.V II.. ..PB BBBB
*/
/* Input/output/peripheral mode:
@@ -101,7 +101,7 @@
* 3210 9876 5432 1098 7654 3210
* ------------ -----------------------------
* PORT Input: ..RR .... .... .... .... ....
* PORT Output: .... .... .... .... .... ....
* PORT Output: ..RR .... .... .... .... ....
* Peripheral: .... .... .... .... .... ....
*/
@@ -189,23 +189,6 @@
# define PORT_SYNCHRONIZER_OFF (0 << PORT_SYNCHRONIZER_SHIFT)
# define PORT_SYNCHRONIZER_ON (1 << PORT_SYNCHRONIZER_SHIFT)
/* Input buffering
*
* MODE BITFIELDS
* ------------ -----------------------------
* 2222 1111 1111 1100 0000 0000
* 3210 9876 5432 1098 7654 3210
* ------------ -----------------------------
* PORT Input: .... .... ..B. .... .... ....
* PORT Output: .... .... .... .... .... ....
* Peripheral: .... .... .... .... .... ....
*/
#define PORT_INBUFFER_SHIFT (13) /* Bit 13: Input buffer enable */
#define PORT_INBUFFER_MASK (1 << PORT_SYNCHRONIZER_SHIFT)
# define PORT_INBUFFER_OFF (0 << PORT_SYNCHRONIZER_SHIFT)
# define PORT_INBUFFER_ON (1 << PORT_SYNCHRONIZER_SHIFT)
/* If the pin is an PORT output, then this identifies the initial output value:
*
* MODE BITFIELDS
@@ -223,14 +206,14 @@
# define PORT_OUTPUT_CLEAR (0 << PORT_SYNCHRONIZER_SHIFT)
# define PORT_OUTPUT_SET (1 << PORT_SYNCHRONIZER_SHIFT)
/* Selections for an interrupting input and peripheral events:
/* Selections for external interrupts:
*
* MODE BITFIELDS
* ------------ -----------------------------
* 2222 1111 1111 1100 0000 0000
* 3210 9876 5432 1098 7654 3210
* ------------ -----------------------------
* PORT Input: .... .... .... II.. .... ....
* PORT Input: .... .... .... .... .... ....
* PORT Output: .... .... .... .... .... ....
* Peripheral: .... .... .... II.. .... ....
*/
@@ -255,8 +238,8 @@
#define PORT_SHIFT (5) /* Bit 5: Port number */
#define PORT_MASK (1 << PORT_SHIFT)
# define PORTA (0 << PORT_SHIFT)
# define PORTB (1 << PORT_SHIFT)
# define PORTA (SAM_PORTA << PORT_SHIFT)
# define PORTB (SAM_PORTB << PORT_SHIFT)
/* This identifies the bit in the port:
*
@@ -309,7 +292,7 @@
* Public Types
****************************************************************************/
typedef uint32_t port_cfgset_t;
typedef uint32_t port_pinset_t;
/****************************************************************************
* Public Data
@@ -335,17 +318,13 @@ extern "C"
*
* Description:
* Configure a PORT pin based on bit-encoded description of the pin.
* Once it is configured as Alternative (PORT_ALT|PORT_CNF_AFPP|...)
* function, it must be unconfigured with sam_unconfigport() with
* the same cfgset first before it can be set to non-alternative function.
*
* Returns:
* OK on success
* ERROR on invalid port, or when pin is locked as ALT function.
* OK (always)
*
****************************************************************************/
int sam_configport(port_cfgset_t cfgset);
int sam_configport(port_pinset_t pinset);
/****************************************************************************
* Name: sam_portwrite
@@ -355,7 +334,7 @@ int sam_configport(port_cfgset_t cfgset);
*
****************************************************************************/
void sam_portwrite(port_cfgset_t pinset, bool value);
void sam_portwrite(port_pinset_t pinset, bool value);
/****************************************************************************
* Name: sam_portread
@@ -365,7 +344,7 @@ void sam_portwrite(port_cfgset_t pinset, bool value);
*
****************************************************************************/
bool sam_portread(port_cfgset_t pinset);
bool sam_portread(port_pinset_t pinset);
/****************************************************************************
* Function: sam_dumpport
@@ -377,7 +356,7 @@ bool sam_portread(port_cfgset_t pinset);
****************************************************************************/
#ifdef CONFIG_DEBUG
void sam_dumpport(port_cfgset_t pinset, const char *msg);
void sam_dumpport(port_pinset_t pinset, const char *msg);
#else
# define sam_dumpport(p,m)
#endif