*------------------------------------------------------------------------------
* Global symbols defined here and exported out of this file
*------------------------------------------------------------------------------
.global _vectors
.global _c_int00
.global _vector1
.global _vector2
.global _vector3
.global _vector4
.global _vector5
.global _UART_ISR
.global _vector7
.global _vector8
.global _vector9
.global _vector10
.global _vector11
.global _vector12
.global _vector13
.global _vector14 ; Hookup the c_int14 ISR in main()
.global _vector15
*------------------------------------------------------------------------------
* Global symbols referenced in this file but defined somewhere else.
* Remember that your interrupt service routines need to be referenced here.
*------------------------------------------------------------------------------
.ref _c_int00
.ref _UART_ISR
*------------------------------------------------------------------------------
* This is a macro that instantiates one entry in the interrupt service table.
*------------------------------------------------------------------------------
VEC_ENTRY .macro addr
STW B0, * --B15
MVKL addr,B0
MVKH addr,B0
B B0
LDW * B15++,B0
NOP 2
NOP
NOP
.endm
*------------------------------------------------------------------------------
* This is a dummy interrupt service routine used to initialize the IST.
*------------------------------------------------------------------------------
_vec_dummy:
B B3
NOP 5
*------------------------------------------------------------------------------
* This is the actual interrupt service table (IST). It is properly aligned and
* is located in the subsection .text:vecs. This means if you don't explicitly
* specify this section in your linker command file, it will default and link
* into the .text section. Remember to set the ISTP register to point to this
* table.
*------------------------------------------------------------------------------
.sect ".vectors"
.align 1024
_vectors:
_vector0: VEC_ENTRY _c_int00 ;RESET
_vector1: VEC_ENTRY _vec_dummy ;NMI
_vector2: VEC_ENTRY _vec_dummy ;RSVD
_vector3: VEC_ENTRY _vec_dummy
_vector4: VEC_ENTRY _vec_dummy
_vector5: VEC_ENTRY _vec_dummy
_vector6: VEC_ENTRY _UART_ISR
_vector7: VEC_ENTRY _vec_dummy
_vector8: VEC_ENTRY _vec_dummy
_vector9: VEC_ENTRY _vec_dummy
_vector10: VEC_ENTRY _vec_dummy
_vector11: VEC_ENTRY _vec_dummy
_vector12: VEC_ENTRY _vec_dummy
_vector13: VEC_ENTRY _vec_dummy
_vector14: VEC_ENTRY _vec_dummy ; Hookup the c_int14 ISR in main()
_vector15: VEC_ENTRY _vec_dummy
*------------------------------------------------------------------------------
interrupt void UART_ISR() //中断响应函数
[
CSR&=0xfffffffe; // 关中断 GIE=0
asm(" NOP 1 ");
ICR = 0xfff0; // 清除中断标志ICR
flag=0;
asm(" NOP 1 ");
CSR=CSR|1; // 开中断
printf("hello");
]