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STM32 FastIO using register access (#12276)

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This commit is contained in:
Karl Andersson
2018-10-31 01:25:44 +01:00
committed by Scott Lahteine
parent 56057bcecd
commit 1946f729fd
4 changed files with 78 additions and 10 deletions
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42
Marlin/src/HAL/HAL_STM32/fastio_STM32.h
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@@ -24,19 +24,49 @@
/**
* Fast I/O interfaces for STM32
* These use GPIO functions instead of Direct Port Manipulation, as on AVR.
* These use GPIO register access for fast port manipulation.
*/
#define _BV(b) (1 << (b))
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
#define READ(IO) digitalRead(IO)
#define WRITE(IO,V) digitalWrite(IO,V)
#define WRITE_VAR(IO,V) WRITE(IO,V)
extern GPIO_TypeDef * FastIOPortMap[];
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
void FastIO_init(); // Must be called before using fast io macros
// --------------------------------------------------------------------------
// Defines
// --------------------------------------------------------------------------
#define _BV(b) (1 << (b))
#define _BV32(b) (1UL << (b))
#if defined(STM32F0xx) || defined(STM32F1xx) || defined(STM32F3xx) || defined(STM32L0xx) || defined(STM32L4xx)
#define _WRITE(IO, V) do { \
if (V) FastIOPortMap[STM_PORT(digitalPin[IO])]->BSRR = _BV32(STM_PIN(digitalPin[IO])) ; \
else FastIOPortMap[STM_PORT(digitalPin[IO])]->BRR = _BV32(STM_PIN(digitalPin[IO])) ; \
} while(0)
#else
#define _WRITE(IO, V) (FastIOPortMap[STM_PORT(digitalPin[IO])]->BSRR = _BV32(STM_PIN(digitalPin[IO] + (V ? 0 : 16))))
#endif
#define _READ(IO) bool(READ_BIT(FastIOPortMap[STM_PORT(digitalPin[IO])]->IDR, _BV32(STM_PIN(digitalPin[IO]))))
#define _TOGGLE(IO) (FastIOPortMap[STM_PORT(digitalPin[IO])]->ODR ^= _BV32(STM_PIN(digitalPin[IO])))
#define _GET_MODE(IO)
#define _SET_MODE(IO,M) pinMode(IO, M)
#define _SET_OUTPUT(IO) pinMode(IO, OUTPUT) /*!< Output Push Pull Mode & GPIO_NOPULL */
#define WRITE_VAR(IO,V) _WRITE(IO,V)
#define WRITE(IO,V) _WRITE(IO,V)
#define READ(IO) _READ(IO)
#define TOGGLE(IO) _TOGGLE(IO)
#define OUT_WRITE(IO,V) do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
#define SET_INPUT(IO) _SET_MODE(IO, INPUT) /*!< Input Floating Mode */
@@ -44,8 +74,6 @@
#define SET_INPUT_PULLDOWN(IO) _SET_MODE(IO, INPUT_PULLDOWN) /*!< Input with Pull-down activation */
#define SET_OUTPUT(IO) OUT_WRITE(IO, LOW)
#define TOGGLE(IO) OUT_WRITE(IO, !READ(IO))
#define GET_INPUT(IO)
#define GET_OUTPUT(IO)
#define GET_TIMER(IO)