C6713B McBSP spi从机模式

guolong sun

Intellectual 440 points

Other Parts Discussed in Thread: CC1310

在将McBSP配置成从机模式时，与CC1310通信，DSP接收数据是正确的，发送数据只能发送10几次。

7 年多前

0 guolong sun 7 年多前

Intellectual 440 points

mcbsp配置如下：
MyMcbspConfig.spcr= (Uint32)
((MCBSP_SPCR_XINTM_XRDY << _MCBSP_SPCR_XINTM_SHIFT )
|(MCBSP_SPCR_RINTM_RRDY << _MCBSP_SPCR_RINTM_SHIFT )
|(MCBSP_SPCR_CLKSTP_NODELAY << _MCBSP_SPCR_CLKSTP_SHIFT )//SPI
|(MCBSP_SPCR_DLB_OFF << _MCBSP_SPCR_DLB_SHIFT )
|(MCBSP_SPCR_XRST_YES << _MCBSP_SPCR_XRST_SHIFT )
);
MyMcbspConfig.rcr = (Uint32)
((MCBSP_RCR_RPHASE_SINGLE << _MCBSP_RCR_RPHASE_SHIFT )

|(MCBSP_RCR_RFRLEN1_OF(120) << _MCBSP_RCR_RFRLEN1_SHIFT )
//|(MCBSP_RCR_RFRLEN2_OF(1) << _MCBSP_RCR_RFRLEN2_SHIFT )

|(MCBSP_RCR_RWDLEN1_8BIT << _MCBSP_RCR_RWDLEN1_SHIFT )
//|(MCBSP_RCR_RWDLEN2_OF(0) << _MCBSP_RCR_RWDLEN2_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_RWDREVRS_DISABLE << _MCBSP_RCR_RWDREVRS_SHIFT )
);
MyMcbspConfig.xcr = (Uint32)
((MCBSP_XCR_XPHASE_SINGLE << _MCBSP_XCR_XPHASE_SHIFT )//单相帧、双相帧

|(MCBSP_XCR_XFRLEN1_OF(30) << _MCBSP_XCR_XFRLEN1_SHIFT )
//|(MCBSP_XCR_XFRLEN2_OF(73) << _MCBSP_XCR_XFRLEN2_SHIFT )

|(MCBSP_XCR_XWDLEN1_32BIT << _MCBSP_XCR_XWDLEN1_SHIFT )
//|(MCBSP_XCR_XWDLEN2_8BIT << _MCBSP_XCR_XWDLEN2_SHIFT )

|(MCBSP_XCR_XCOMPAND_DEFAULT << _MCBSP_XCR_XCOMPAND_SHIFT )//MSB

|(MCBSP_XCR_XFIG_YES << _MCBSP_XCR_XFIG_SHIFT )

|(MCBSP_XCR_XDATDLY_0BIT << _MCBSP_XCR_XDATDLY_SHIFT )
|( MCBSP_XCR_XWDREVRS_DISABLE << _MCBSP_XCR_XWDREVRS_SHIFT)
);
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(1) << _MCBSP_SRGR_CLKGDV_SHIFT )//250 error 80 OK，加快采样速度
);
MyMcbspConfig.pcr = (Uint32)
((MCBSP_PCR_XIOEN_SP << _MCBSP_PCR_XIOEN_SHIFT )//0
|(MCBSP_PCR_RIOEN_SP << _MCBSP_PCR_RIOEN_SHIFT )//0

|(MCBSP_PCR_FSXM_EXTERNAL << _MCBSP_PCR_FSXM_SHIFT )//发送帧同步模式
|(MCBSP_PCR_FSRM_EXTERNAL << _MCBSP_PCR_FSRM_SHIFT )//

|(MCBSP_PCR_CLKXM_INPUT << _MCBSP_PCR_CLKXM_SHIFT )//master
|(MCBSP_PCR_CLKRM_INPUT << _MCBSP_PCR_CLKRM_SHIFT )

|(MCBSP_PCR_DXSTAT_1 << _MCBSP_PCR_DXSTAT_SHIFT )
|(MCBSP_PCR_DRSTAT_1 << _MCBSP_PCR_DRSTAT_SHIFT )

|(MCBSP_PCR_CLKSSTAT_0 << _MCBSP_PCR_CLKSSTAT_SHIFT )

|(MCBSP_PCR_FSXP_ACTIVELOW << _MCBSP_PCR_FSXP_SHIFT )
|(MCBSP_PCR_FSRP_ACTIVELOW << _MCBSP_PCR_FSRP_SHIFT )

|(MCBSP_PCR_CLKRP_RISING << _MCBSP_PCR_CLKRP_SHIFT )//关系DSP 正常读取DMA数据
|(MCBSP_PCR_CLKXP_RISING << _MCBSP_PCR_CLKXP_SHIFT )
);
采样CPU查询标志位来接收发送数据