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add wait_cpuclock() macro for AVR and CPU_CLOCK macro (#12755)

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Takeshi ISHII 2021-08-24 22:34:24 +09:00 committed by GitHub
parent c4dbf4bf01
commit c9c60d227e
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2 changed files with 8 additions and 5 deletions
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4
tmk_core/common/avr/_wait.h
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@ -37,6 +37,8 @@
} \
} \
} while (0)
#define wait_cpuclock(n) __builtin_avr_delay_cycles(n)
#define CPU_CLOCK F_CPU
/* The AVR series GPIOs have a one clock read delay for changes in the digital input signal.
* But here's more margin to make it two clocks. */
@ -44,4 +46,4 @@
# define GPIO_INPUT_PIN_DELAY 2
#endif
#define waitInputPinDelay() __builtin_avr_delay_cycles(GPIO_INPUT_PIN_DELAY)
#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY)

9
tmk_core/common/chibios/_wait.h
View File

@ -41,6 +41,10 @@ void wait_us(uint16_t duration);
} while (0)
#endif
#include "_wait.c"
#define CPU_CLOCK STM32_SYSCLK
/* For GPIOs on ARM-based MCUs, the input pins are sampled by the clock of the bus
* to which the GPIO is connected.
* The connected buses differ depending on the various series of MCUs.
@ -51,11 +55,8 @@ void wait_us(uint16_t duration);
* If the GPIO_INPUT_PIN_DELAY macro is not defined, the following default values will be used.
* (A fairly large value of 0.25 microseconds is set.)
*/
#include "_wait.c"
#ifndef GPIO_INPUT_PIN_DELAY
# define GPIO_INPUT_PIN_DELAY (STM32_SYSCLK / 1000000L / 4)
# define GPIO_INPUT_PIN_DELAY (CPU_CLOCK / 1000000L / 4)
#endif
#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY)