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Diff: TARGET_SAMR21G18A/TOOLCHAIN_GCC_ARM/interrupt_sam_nvic.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 111:4336505e4b1c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_SAMR21G18A/TOOLCHAIN_GCC_ARM/interrupt_sam_nvic.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,143 @@ +#ifndef UTILS_INTERRUPT_INTERRUPT_H +#define UTILS_INTERRUPT_INTERRUPT_H + +#include <compiler.h> +#include <parts.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \weakgroup interrupt_group + * + * @{ + */ + +/** + * \name Interrupt Service Routine definition + * + * @{ + */ + +/** + * \brief Define service routine + * + * \note For NVIC devices the interrupt service routines are predefined to + * add to vector table in binary generation, so there is no service + * register at run time. The routine collections are in exceptions.h. + * + * Usage: + * \code + ISR(foo_irq_handler) + { + // Function definition + ... + } +\endcode + * + * \param func Name for the function. + */ +# define ISR(func) \ + void func (void) + +/** + * \brief Initialize interrupt vectors + * + * For NVIC the interrupt vectors are put in vector table. So nothing + * to do to initialize them, except defined the vector function with + * right name. + * + * This must be called prior to \ref irq_register_handler. + */ +# define irq_initialize_vectors() \ + do { \ + } while(0) + +/** + * \brief Register handler for interrupt + * + * For NVIC the interrupt vectors are put in vector table. So nothing + * to do to register them, except defined the vector function with + * right name. + * + * Usage: + * \code + irq_initialize_vectors(); + irq_register_handler(foo_irq_handler); +\endcode + * + * \note The function \a func must be defined with the \ref ISR macro. + * \note The functions prototypes can be found in the device exception header + * files (exceptions.h). + */ +# define irq_register_handler(int_num, int_prio) \ + NVIC_ClearPendingIRQ( (IRQn_Type)int_num); \ + NVIC_SetPriority( (IRQn_Type)int_num, int_prio); \ + NVIC_EnableIRQ( (IRQn_Type)int_num); \ + +//@} + +# define cpu_irq_enable() \ + do { \ + g_interrupt_enabled = true; \ + __DMB(); \ + __enable_irq(); \ + } while (0) +# define cpu_irq_disable() \ + do { \ + __disable_irq(); \ + __DMB(); \ + g_interrupt_enabled = false; \ + } while (0) + +typedef uint32_t irqflags_t; + +#if !defined(__DOXYGEN__) +extern volatile bool g_interrupt_enabled; +#endif + +#define cpu_irq_is_enabled() (__get_PRIMASK() == 0) + +static volatile uint32_t cpu_irq_critical_section_counter; +static volatile bool cpu_irq_prev_interrupt_state; + +static inline irqflags_t cpu_irq_save(void) +{ + irqflags_t flags = cpu_irq_is_enabled(); + cpu_irq_disable(); + return flags; +} + +static inline bool cpu_irq_is_enabled_flags(irqflags_t flags) +{ + return (flags); +} + +static inline void cpu_irq_restore(irqflags_t flags) +{ + if (cpu_irq_is_enabled_flags(flags)) + cpu_irq_enable(); +} + +void cpu_irq_enter_critical(void); +void cpu_irq_leave_critical(void); + +/** + * \weakgroup interrupt_deprecated_group + * @{ + */ + +#define Enable_global_interrupt() cpu_irq_enable() +#define Disable_global_interrupt() cpu_irq_disable() +#define Is_global_interrupt_enabled() cpu_irq_is_enabled() + +//@} + +//@} + +#ifdef __cplusplus +} +#endif + +#endif /* UTILS_INTERRUPT_INTERRUPT_H */