TI专家，各位朋友：
SPI slave模式CPU轮询可以接收到数据，并且是正确的，但是 配置为中断接收却进步了中断
中断配置代码：
void Setup_Spi_Interrupt(void) { //point to the IRQ vector table IRQ_setVecs(vectors); //Globally enable interrupts IRQ_globalEnable(); //Enable NMI interrupt IRQ_nmiEnable(); //Map McBSP0 RINT0 events(0x0c) to physical interrupt number IRQ_map(IRQ_EVT_EXTINT4, IRQ_EVT_RINT0); //Reset the ext events IRQ_reset(IRQ_EVT_EXTINT4); //Enable the ext events(events are disabled while resetting) IRQ_enable(IRQ_EVT_EXTINT4); } 中断向量表：
*------------------------------------------------------------------------------ * Global symbols defined here and exported out of this file *------------------------------------------------------------------------------ .global _vectors .global _c_int00 .global _vector1 .global _vector2 .global _vector3 .global _c_int04 .global _vector5 .global _vector6 .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 *------------------------------------------------------------------------------ * 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 ".text:vecs" .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 _c_int04 _vector5: VEC_ENTRY _vec_dummy _vector6: VEC_ENTRY _vec_dummy _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 *------------------------------------------------------------------------------ ******************************************************************************** * End of vecs.asm ********************************************************************************
MCBSP0配置：
void ConfigMcbsp(MCBSP_Handle *hMcbsp_ch0) { MCBSP_Config MyMcbspConfig; *hMcbsp_ch0 = MCBSP_open(0, MCBSP_OPEN_RESET); //串口控制寄存器 MyMcbspConfig.spcr= (Uint32) ((MCBSP_SPCR_XINTM_XRDY << _MCBSP_SPCR_XINTM_SHIFT ) |(MCBSP_SPCR_RINTM_RRDY << _MCBSP_SPCR_RINTM_SHIFT ) |(MCBSP_SPCR_CLKSTP_DELAY << _MCBSP_SPCR_CLKSTP_SHIFT ) |(MCBSP_SPCR_DLB_OFF << _MCBSP_SPCR_DLB_SHIFT ) //|( MCBSP_SPCR_XRST_1 << _MCBSP_SPCR_XRST_SHIFT ) //|( MCBSP_SPCR_RINTM_FRM << _MCBSP_SPCR_RINTM_SHIFT ) ); //接收控制寄存器 MyMcbspConfig.rcr = (Uint32) ((MCBSP_RCR_RPHASE_SINGLE << _MCBSP_RCR_RPHASE_SHIFT ) |(MCBSP_RCR_RCOMPAND_DEFAULT << _MCBSP_RCR_RCOMPAND_SHIFT )//MSB |(MCBSP_RCR_RFIG_YES << _MCBSP_RCR_RFIG_SHIFT ) |(MCBSP_RCR_RDATDLY_0BIT << _MCBSP_RCR_RDATDLY_SHIFT ) |(MCBSP_RCR_RWDLEN1_8BIT << _MCBSP_RCR_RWDLEN1_SHIFT )//8BIT |(MCBSP_RCR_RFRLEN1_DEFAULT << _MCBSP_RCR_RFRLEN1_SHIFT ) ); //发送控制寄存器 MyMcbspConfig.xcr = (Uint32) ((MCBSP_XCR_XPHASE_SINGLE << _MCBSP_XCR_XPHASE_SHIFT ) |(MCBSP_XCR_XCOMPAND_DEFAULT << _MCBSP_XCR_XCOMPAND_SHIFT )//MSB //|(MCBSP_XCR_XCOMPAND_8BITLSB << _MCBSP_XCR_XCOMPAND_SHIFT )//lSB |(MCBSP_XCR_XFIG_YES << _MCBSP_XCR_XFIG_SHIFT ) |(MCBSP_XCR_XDATDLY_0BIT << _MCBSP_XCR_XDATDLY_SHIFT ) |(MCBSP_XCR_XWDLEN1_8BIT << _MCBSP_XCR_XWDLEN1_SHIFT )//8BIT |(MCBSP_XCR_XFRLEN1_DEFAULT << _MCBSP_XCR_XFRLEN1_SHIFT ) ); //采样率产生寄存器 MyMcbspConfig.srgr= (Uint32) ((MCBSP_SRGR_CLKSM_INTERNAL << _MCBSP_SRGR_CLKSM_SHIFT ) |(MCBSP_SRGR_FSGM_DXR2XSR << _MCBSP_SRGR_FSGM_SHIFT ) //|(MCBSP_SRGR_FSGM_FSG << _MCBSP_SRGR_FSGM_SHIFT )//ERROR |(MCBSP_SRGR_CLKGDV_OF(0) << _MCBSP_SRGR_CLKGDV_SHIFT )//20M ); //引脚控制 MyMcbspConfig.pcr = (Uint32) ((MCBSP_PCR_XIOEN_SP << _MCBSP_PCR_XIOEN_SHIFT ) |(MCBSP_PCR_RIOEN_SP << _MCBSP_PCR_RIOEN_SHIFT ) |(MCBSP_PCR_FSXM_EXTERNAL << _MCBSP_PCR_FSXM_SHIFT ) |(MCBSP_PCR_FSRM_EXTERNAL << _MCBSP_PCR_FSRM_SHIFT ) |(MCBSP_PCR_CLKXM_INPUT << _MCBSP_PCR_CLKXM_SHIFT )//slave |(MCBSP_PCR_CLKRM_INPUT << _MCBSP_PCR_CLKRM_SHIFT )//slave |(MCBSP_PCR_FSXP_ACTIVELOW << _MCBSP_PCR_FSXP_SHIFT ) |(MCBSP_PCR_FSRP_ACTIVELOW << _MCBSP_PCR_FSRP_SHIFT ) //|(MCBSP_PCR_CLKXP_RISING << _MCBSP_PCR_CLKXP_SHIFT ) |(MCBSP_PCR_CLKXP_FALLING << _MCBSP_PCR_CLKXP_SHIFT ) |(MCBSP_PCR_CLKRP_FALLING << _MCBSP_PCR_CLKRP_SHIFT ) ); MCBSP_config(*hMcbsp_ch0, &MyMcbspConfig); } /* end config_mcbsp */是否在slave模式下不能中断接收呢，请指点，谢谢！