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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 addrSTWB0,*--B15MVKL addr,B0MVKH addr,B0BB0LDW*B15++,B0NOP2NOPNOP.endm *------------------------------------------------------------------------------ * This is a dummy interrupt service routine used to initialize the IST. *------------------------------------------------------------------------------ _vec_dummy:BB3NOP 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！
Shine：
试试中断函数名用interrupt关键字定义一下。interrupt void Setup_Spi_Interrupt(void)
wei lee1：
回复 Shine:
您可能看错了，那个不是中断服务程序，是中断的配置程序。
中断服务程序是这个，我这样写的。
//SPI interrupt service routineinterrupt voidc_int04(void){//while(!(0x00000002==(SPCR0&0x00000002)));data=MCBSP_read(hMcbsp_ch0);}
wei lee1：
回复 Shine:
现在又遇到一个新问题，我接收的中断方式由“RINT is driven by RRDY (end-of-word) and end-of-frame in A-bis mode.”修改为“RINT is generated by a new frame synchronization.”，无中断触发。
具体的SPCR寄存器的描述如下图：
Shine：
回复 wei lee1:
在*hMcbsp_ch0 = MCBSP_open(0, MCBSP_OPEN_RESET);后调用Setup_Spi_Interrupt。
Shine：
回复 wei lee1:
先看一下IFR寄存器相应位有没有置1？看中断有没有发生。
Kaixue Hao：
你好，我在用6713作为SPI也遇到了类似的问题，就是rrdy位一直不能置1.
您可以把您McBSP的程序和SPI主机的配置发我邮箱吗？谢谢！邮箱：haokx1993@163.com
