im using SPi DMA in TI TMS320F28379D

Akash Ahirwar · 2024-02-13T05:55:40+09:00

Hello Team, actually, SPI DMA support 16 bit or 32 bits FIFO. I’m using SPI support controller which support 8-bit commands. void InitSpi(void) { // Initialize SPI-A // Set reset low before configuration changes // Clock polarity (0 == rising, 1 == falling) // 16-bit character // Enable loop-back SpiaRegs.SPICCR.bit.SPISWRESET = 0; SpiaRegs.SPICCR.bit.CLKPOLARITY = 0; SpiaRegs.SPICCR.bit.SPICHAR = (8-1); // SpiaRegs.SPICCR.bit.SPILBK = 1; // Enable master (0 == slave, 1 == master) // Enable transmission (Talk) // Clock phase (0 == normal, 1 == delayed) // SPI interrupts are disabled SpiaRegs.SPICTL.bit.MASTER_SLAVE = 1; SpiaRegs.SPICTL.bit.TALK = 1; SpiaRegs.SPICTL.bit.CLK_PHASE = 1; SpiaRegs.SPICTL.bit.SPIINTENA = 0; // Set the baud rate //SpiaRegs.SPIBRR.bit.SPI_BIT_RATE = SPI_BRR; SpiaRegs.SPIBRR.bit.SPI_BIT_RATE = 4; // Set FREE bit // Halting on a breakpoint will not halt the SPI SpiaRegs.SPIPRI.bit.FREE = 1; // Release the SPI from reset SpiaRegs.SPICCR.bit.SPISWRESET = 1; } I done SPI configurations like this. please give me any suggestion, o resolve this issue.

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