diff options
Diffstat (limited to 'stmhal/mpconfigport.h')
| -rw-r--r-- | stmhal/mpconfigport.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/stmhal/mpconfigport.h b/stmhal/mpconfigport.h index 805d74f99..f9142eea4 100644 --- a/stmhal/mpconfigport.h +++ b/stmhal/mpconfigport.h @@ -24,6 +24,10 @@ * THE SOFTWARE. */ +#pragma once +#ifndef __INCLUDED_MPCONFIGPORT_H +#define __INCLUDED_MPCONFIGPORT_H + // options to control how Micro Python is built #define MICROPY_ALLOC_PATH_MAX (128) @@ -96,11 +100,28 @@ typedef unsigned int mp_uint_t; // must be pointer size typedef void *machine_ptr_t; // must be of pointer size typedef const void *machine_const_ptr_t; // must be of pointer size -mp_int_t disable_irq(void); -void enable_irq(mp_int_t enable); +// We have inlined IRQ functions for efficiency (they are generally +// 1 machine instruction). +// +// Note on IRQ state: you should not need to know the specific +// value of the state variable, but rather just pass the return +// value from disable_irq back to enable_irq. If you really need +// to know the machine-specific values, see irq.h. + +#include <stm32f4xx_hal.h> + +static inline void enable_irq(mp_uint_t state) { + __set_PRIMASK(state); +} -#define MICROPY_BEGIN_ATOMIC_SECTION() disable_irq() -#define MICROPY_END_ATOMIC_SECTION(enable) enable_irq(enable) +static inline mp_uint_t disable_irq(void) { + mp_uint_t state = __get_PRIMASK(); + __disable_irq(); + return state; +} + +#define MICROPY_BEGIN_ATOMIC_SECTION() disable_irq() +#define MICROPY_END_ATOMIC_SECTION(state) enable_irq(state) // There is no classical C heap in bare-metal ports, only Python // garbage-collected heap. For completeness, emulate C heap via @@ -121,3 +142,5 @@ void enable_irq(mp_int_t enable); #define MICROPY_HAL_H "mphal.h" #define MICROPY_PIN_DEFS_PORT_H "pin_defs_stmhal.h" + +#endif // __INCLUDED_MPCONFIGPORT_H |