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[2.0.x] AVR: Atomic bit set and clear of upper pin ports without critical section (#10502)

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* AVR: Atomic bit set and clear

The critical section can be dropped, saving 3 cycles per access. Also simplified pin toggling for all ports.
This commit is contained in:
Eduardo José Tagle
2018-04-24 15:45:43 -03:00
committed by Scott Lahteine
parent 02a711c4d6
commit c1e5ebbc1e
4 changed files with 113 additions and 108 deletions
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56
Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h
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@ -30,7 +30,7 @@
#define _FASTIO_TEENSY_H
#ifndef MASK
#define MASK(PIN) (1 << PIN)
#define MASK(PIN) (1 << PIN)
#endif
#define GPIO_BITBAND_ADDR(reg, bit) (((uint32_t)&(reg) - 0x40000000) * 32 + (bit) * 4 + 0x42000000)
@ -44,38 +44,46 @@
* Why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html
*/
#define _READ(p) ((bool)(CORE_PIN ## p ## _PINREG & CORE_PIN ## p ## _BITMASK))
#define _WRITE(p, v) do { if (v) CORE_PIN ## p ## _PORTSET = CORE_PIN ## p ## _BITMASK; \
else CORE_PIN ## p ## _PORTCLEAR = CORE_PIN ## p ## _BITMASK; } while (0)
#define _TOGGLE(p) (*(&(CORE_PIN ## p ## _PORTCLEAR)+1) = CORE_PIN ## p ## _BITMASK)
#define _SET_INPUT(p) do { CORE_PIN ## p ## _CONFIG = PORT_PCR_MUX(1); \
GPIO_BITBAND(CORE_PIN ## p ## _DDRREG , CORE_PIN ## p ## _BIT) = 0; \
} while (0)
#define _SET_OUTPUT(p) do { CORE_PIN ## p ## _CONFIG = PORT_PCR_MUX(1)|PORT_PCR_SRE|PORT_PCR_DSE; \
GPIO_BITBAND(CORE_PIN ## p ## _DDRREG , CORE_PIN ## p ## _BIT) = 1; \
} while (0)
#define _READ(p) bool(CORE_PIN ## p ## _PINREG & CORE_PIN ## p ## _BITMASK)
//#define _PULLUP(IO, v) { pinMode(IO, (v!=LOW ? INPUT_PULLUP : INPUT)); }
#define _WRITE(P,V) do{ \
if (V) CORE_PIN ## P ## _PORTSET = CORE_PIN ## P ## _BITMASK; \
else CORE_PIN ## P ## _PORTCLEAR = CORE_PIN ## P ## _BITMASK; \
}while(0)
#define _GET_INPUT(p) ((CORE_PIN ## p ## _DDRREG & CORE_PIN ## p ## _BITMASK) == 0)
#define _GET_OUTPUT(p) ((CORE_PIN ## p ## _DDRREG & CORE_PIN ## p ## _BITMASK) == 0)
#define _TOGGLE(P) (*(&(CORE_PIN ## P ## _PORTCLEAR)+1) = CORE_PIN ## P ## _BITMASK)
#define _SET_INPUT(P) do{ \
CORE_PIN ## P ## _CONFIG = PORT_PCR_MUX(1); \
GPIO_BITBAND(CORE_PIN ## P ## _DDRREG , CORE_PIN ## P ## _BIT) = 0; \
}while(0)
#define _SET_OUTPUT(P) do{ \
CORE_PIN ## P ## _CONFIG = PORT_PCR_MUX(1)|PORT_PCR_SRE|PORT_PCR_DSE; \
GPIO_BITBAND(CORE_PIN ## P ## _DDRREG , CORE_PIN ## P ## _BIT) = 1; \
}while(0)
//#define _PULLUP(IO,V) { pinMode(IO, (v!=LOW ? INPUT_PULLUP : INPUT)); }
#define _GET_INPUT(P) ((CORE_PIN ## P ## _DDRREG & CORE_PIN ## P ## _BITMASK) == 0)
#define _GET_OUTPUT(P) ((CORE_PIN ## P ## _DDRREG & CORE_PIN ## P ## _BITMASK) == 0)
//#define _GET_TIMER(IO)
#define READ(IO) _READ(IO)
#define READ(IO) _READ(IO)
#define WRITE_VAR(IO, v) _WRITE_VAR(IO, v)
#define WRITE(IO, v) _WRITE(IO, v)
#define TOGGLE(IO) _TOGGLE(IO)
#define WRITE_VAR(IO,V) _WRITE_VAR(IO,V)
#define WRITE(IO,V) _WRITE(IO,V)
#define TOGGLE(IO) _TOGGLE(IO)
#define SET_INPUT(IO) _SET_INPUT(IO)
#define SET_INPUT_PULLUP(IO) do{ _SET_INPUT(IO); _WRITE(IO, HIGH); }while(0)
#define SET_OUTPUT(IO) _SET_OUTPUT(IO)
#define SET_INPUT(IO) _SET_INPUT(IO)
#define SET_INPUT_PULLUP(IO) do{ _SET_INPUT(IO); _WRITE(IO,HIGH); }while(0)
#define SET_OUTPUT(IO) _SET_OUTPUT(IO)
#define GET_INPUT(IO) _GET_INPUT(IO)
#define GET_OUTPUT(IO) _GET_OUTPUT(IO)
#define GET_INPUT(IO) _GET_INPUT(IO)
#define GET_OUTPUT(IO) _GET_OUTPUT(IO)
#define OUT_WRITE(IO, v) { SET_OUTPUT(IO); WRITE(IO, v); }
#define OUT_WRITE(IO,V) do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
/**
* Ports, functions, and pins