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)
void	rt_hw_cpu_reset (void)
void	rt_hw_cpu_shutdown (void)

---

Detailed Description

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_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

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.

void rt_hw_interrupt_init

(

void

)

This function initializes interrupt.

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.

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.

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.

void rt_hw_cpu_reset

(

void

)

This function will reset whole platform.

void rt_hw_cpu_shutdown

(

void

)

This function will halt whole platform.