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pinio.h: rename _PULLUP_OFF also on STM32 to _PULL_OFF 

added also some information about possible modes
removed deprecated comment
This commit is contained in:
Nico Tonnhofer 2016-10-18 19:05:09 +02:00
parent 0cfc503c4a
commit 7fcb8fd20c
1 changed files with 10 additions and 7 deletions
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17
pinio.h
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@ -115,10 +115,6 @@
} while (0)
#elif defined __ARM_STM32F411__
/**
Modified mbed-system of BSRR. Originally it is 32bit. Now we have low/high-bit
splitted in 2x16bit. Much easier to handle. Low-bit for HIGH and high-bit for LOW.
*/
/// Read a pin.
#define _READ(IO) (IO ## _PORT->IDR & MASK(IO ## _PIN))
/// Write to a pin.
@ -130,6 +126,13 @@
IO ## _PORT->BSRR = MASK((IO ## _PIN + 16)); \
} while (0)
/**
possible modes are:
0: Input (reset state)
1: General purpose output mode
2: Alternate function mode
3: Analog mode
*/
#define _SET_MODE(IO, v) \
do { \
IO ## _PORT->MODER &= ~(0x3 << ((IO ## _PIN) * 2)); \
@ -144,7 +147,7 @@
IO ## _PORT->PUPDR |= (1 << ((IO ## _PIN) << 1)); \
} while (0)
/// Disable pullup resistor.
#define _PULLUP_OFF(IO) \
#define _PULL_OFF(IO) \
do { \
IO ## _PORT->PUPDR &= ~(3 << ((IO ## _PIN) << 1)); \
} while (0)
@ -176,7 +179,7 @@
*/
#define _SET_INPUT(IO) \
do { \
_PULLUP_OFF(IO); \
_PULL_OFF(IO); \
_SET_MODE(IO, 0); \
} while (0)
@ -188,7 +191,7 @@
*/
#define _SET_OUTPUT(IO) \
do { \
_PULLUP_OFF(IO); \
_PULL_OFF(IO); \
_SET_MODE(IO, 1); \
_SET_OSPEED(IO, 3); \
} while (0)