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我用例程试了下，发单个字节是没有问题的：
* |" z G% P/ m2 o" I `下面是我的配置：& q6 y5 v, p$ B
//*************** RESET MCBSP
1 ?% y1 o* l+ `8 k! Q# F9 M McbspaRegs.SPCR2.all=0x0000; // Reset FS generator, sample rate generator & transmitter, ?& e; g# r4 q: g5 I
McbspaRegs.SPCR1.all=0x0000; // Reset Receiver, Right justify word, Digital loopback dis.3 _ y- y: d2 F* \- P W& [
7 C; \+ S( Y0 G McbspaRegs.PCR.all=0x0F08; //(CLKXM=CLKRM=FSXM=FSRM= 1, FSXP = 1)
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//McbspaRegs.SPCR1.bit.DLB = 1;
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/ M% d t/ v* K$ i) }, e McbspaRegs.SPCR1.bit.CLKSTP = 2; // Low inactive state without delay:: J( L! a# M! e" l0 n; S
McbspaRegs.PCR.bit.CLKXP = 0; // transmits data on the rising edge8 f0 ^* }0 h L4 F1 L* _8 y
McbspaRegs.PCR.bit.CLKRP = 0; //receives data on the falling edge of MCLKR.) e4 m2 V2 Q' y% s5 W& T
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McbspaRegs.RCR2.bit.RDATDLY = 1; // FSX setup time 1 in master mode. 0 for slave mode (Receive): e" U' z; ~4 R+ F
McbspaRegs.XCR2.bit.XDATDLY = 1; // FSX setup time 1 in master mode. 0 for slave mode (Transmit)1 v0 y7 L1 S, V( z5 \
" k/ _4 C" N! O, I0 I McbspaRegs.XCR2.bit.XPHASE = 0; //发送使用单相位帧; a+ z: @+ O. f/ m7 V$ D2 U
McbspaRegs.RCR2.bit.RPHASE = 0; //接收使用单相位帧, J% e p9 ~/ Y* F" X/ X
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McbspaRegs.RCR1.bit.RWDLEN1 = 2; // 16-bit word
% N- G8 R' n4 S# W6 H" p6 R- y5 _ McbspaRegs.RCR1.bit.RFRLEN1 = 15;
+ n/ g) f! \' O McbspaRegs.XCR1.bit.XWDLEN1 = 2; // 16-bit word% | d/ ? N# p6 f
McbspaRegs.XCR1.bit.XFRLEN1 = 15;
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* `/ F# R1 c& h McbspaRegs.SRGR2.bit.CLKSM = 1; // CLKSM=1 (If SCLKME=0, i/p clock to SRG is LSPCLK), e2 M; ~0 m- _
McbspaRegs.SRGR1.bit.CLKGDV = 8; //10 CLKG frequency = LSPCLK/(CLKGDV+1)) g& ~2 s& x& l A2 _6 X' L2 V) ]
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McbspaRegs.SPCR2.bit.GRST = 1; // Enable the sample rate generator0 z1 i. [& a! |& d9 I; ~4 x+ w7 D. {
//delay_loop(); // Wait at least 2 SRG clock cycles
/ \5 S$ z3 Z( ~, B! I. b; L McbspaRegs.SPCR2.bit.XRST = 1; // Release TX from Reset
% w4 |6 @( T `* m! K McbspaRegs.SPCR1.bit.RRST = 1; // Release RX from Reset
' ?& I3 I$ |% _6 D r delay_loop();
: U: P4 x& y# p! [3 t' p- n McbspaRegs.SPCR2.bit.FRST = 1; // Frame Sync Generator reset W) C/ F$ ]% V( F( @# G+ ^
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我定时发数据16个字节数据
5 @. t0 A5 `! [" J1 |for(i=0;i<16;i++)! |$ y5 D+ q5 q# L2 W
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McbspaRegs.DXR1.all = Send_Dat[i];
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; s' M! P- P& {2 X1 w7 G" X3 E数据就全部错位了，但如果只发一个字节，则没有问题。. v, ]/ U6 l) ]5 k/ w2 w! g
请教各位，是否有遇到这个问题，谢谢！0 c# M B& x( J; s
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发表于 2020-7-15 15:06
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支持！
反对！