Hardware Related Package

Functions
rt_base_t	rt_hw_interrupt_disable (void)
void	rt_hw_interrupt_enable (rt_base_t level)
void	rt_hw_interrupt_init (void)
void	rt_hw_interrupt_mask (int vector)
void	rt_hw_interrupt_umask (int vector)
void	rt_hw_interrupt_install (int vector, rt_isr_handler_t new_handler, rt_isr_handler_t *old_handler)

Detailed Description

Hardware Related Package includes board support package(BSP) and CSP(Chip Support Package).

Board Support Package(BSP) is the hardware related wrapper, for example, peripherals in board, the pinmux setting etc. In RT-Thread RTOS, the bsp is placed under bsp directory.

Chip Support Package(CSP) is a software set that contains chip specific software. A CSP usually includes operating system porting and peripheral device drivers inside chip. In RT-Thread RTOS, the csp is placed under libcpu directory.

Function Documentation

rt_hw_interrupt_disable()

rt_base_t rt_hw_interrupt_disable

(

void

)

This function will return current system interrupt status and disable system interrupt.

Returns

the current system interrupt status.

rt_hw_interrupt_enable()

void rt_hw_interrupt_enable

(

rt_base_t

level

)

This function will set the specified interrupt status, which shall saved by rt_hw_intterrupt_disable function. If the saved interrupt status is interrupt opened, this function will open system interrupt status.

Parameters

level

the interrupt status to be set.

rt_hw_interrupt_init()

void rt_hw_interrupt_init

(

void

)

This function initializes interrupt.

rt_hw_interrupt_mask()

void rt_hw_interrupt_mask

(

int

vector

)

This function masks the specified interrupt.

Parameters

vector

the interrupt number to be masked.

Note

not all of platform provide this function.

rt_hw_interrupt_umask()

void rt_hw_interrupt_umask

(

int

vector

)

This function umasks the specified interrupt.

Parameters

vector

the interrupt number to be unmasked.

Note

not all of platform provide this function.

rt_hw_interrupt_install()

void rt_hw_interrupt_install	(	int	vector,
		rt_isr_handler_t	new_handler,
		rt_isr_handler_t *	old_handler
	)

This function will install specified interrupt handler.

Parameters

vector	the interrupt number to be installed.
new_handler	the new interrupt handler.
old_handler	the old interrupt handler. This parameter can be RT_NULL.

Note

not all of platform provide this function.