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器件型号：TMS320F28386D 主题中讨论的其他器件：C2000WARE
您好！
我一直使用 TI DSP 工作、在配置 SCI 外设时遇到问题。
我看到的问题是、我要写入的寄存器实际上没有更改。
我已检查 SCI B 外设的时钟是否启用。
将不胜感激。 以下代码：
谢谢！
丹·布雷西亚
void init_SCI(void)
{
ScibRegs.SCICTL1.bit.SWRESET = holdReset;
//Communication Control Register
ScibRegs.SCICCR.bit.STOPBITS = oneStopBit;
ScibRegs.SCICCR.bit.PARITY = evenParity; //Doesn't matter because it's disabled
ScibRegs.SCICCR.bit.PARITYENA = disableParity;
ScibRegs.SCICCR.bit.LOOPBKENA = disableLoopBack;
ScibRegs.SCICCR.bit.ADDRIDLE_MODE = pointToPointMode;
ScibRegs.SCICCR.bit.SCICHAR = eightBitsPerChar;
//Control Register 1
ScibRegs.SCICTL1.bit.RXERRINTENA = disabledRxErrorInterrupt;
ScibRegs.SCICTL1.bit.TXWAKE = txSleep; //--DB Understand this bit better
ScibRegs.SCICTL1.bit.SLEEP = rxWake;
ScibRegs.SCICTL1.bit.TXENA = txDisable;
ScibRegs.SCICTL1.bit.RXENA = rxEnable;
//Baud Rate
int x = ( (calculateBaudRateClockDivider(desiredBaudRate, lowSpeedPeripheralClockRate) ) & 0xFF00) >> 8;
ScibRegs.SCIHBAUD.bit.BAUD = x;
int y = (calculateBaudRateClockDivider(desiredBaudRate, lowSpeedPeripheralClockRate) ) & 0x00FF;
ScibRegs.SCILBAUD.bit.BAUD = y;
//Control Register 2
ScibRegs.SCICTL2.bit.RXBKINTENA = rxDisableInterrupt;
ScibRegs.SCICTL2.bit.TXINTENA = txDisableInterrupt;
//Tx FIFO Register
ScibRegs.SCIFFTX.bit.SCIRST = sciFIFOReset;
ScibRegs.SCIFFTX.bit.SCIFFENA = sciFIFODisable;
ScibRegs.SCIFFTX.bit.TXFIFORESET = txFIFOReset;
ScibRegs.SCIFFTX.bit.TXFFIENA = txFIFOInterruptDisabled;
//Rx FIFO Register
ScibRegs.SCIFFRX.bit.RXFIFORESET = rxFIFORESET;
ScibRegs.SCIFFRX.bit.RXFFIENA = rxFIFOInterruptDisabled;
//Auto-Baud Detection Register
ScibRegs.SCIFFCT.bit.CDC = autoBaudDetectAlignmentDisabled;
//Debug Behaviour Register
ScibRegs.SCIPRI.bit.FREESOFT = stopOnSuspend;
ScibRegs.SCICTL1.bit.SWRESET = releaseReset;
return;
}
#include "f2838x_device.h" #ifndef NAI_VPX_SCI_H_ #define NAI_VPX_SCI_H_ //SCI Communication Control Register (SCICCR) Macros #define oneStopBit (0x00) #define evenParity (0x00) #define disableParity (0x00) #define disableLoopBack (0x00) #define pointToPointMode (0x00) #define eightBitsPerChar (0x07) //SCI Control Register 1 (SCICTL1) Macros #define disabledRxErrorInterrupt (0x00) #define releaseReset (0x01) #define holdReset (0x00) #define txSleep (0x00) #define txWake (0x01) #define rxWake (0x01) #define txEnable (0x01) #define txDisable (0x00) #define rxEnable (0x01) #define rxDisable (0x00) //Baud Rate Calculation & Constants #define lowSpeedPeripheralClockRate (50000000) //50MHz #define desiredBaudRate (115200) //115.2kHz #define calculateBaudRateClockDivider(desiredBaud,LSPCLK) (((LSPCLK) / (8 * (desiredBaud))) - 1) //SCI Control Register 1 (SCICTL1) Macros #define rxDisableInterrupt (0x00) #define txDisableInterrupt (0x00) //SCI Tx FIFO Register (SCIFFTX) Macros #define sciFIFOReset (0x00) #define sciFIFODisable (0x00) #define txFIFOReset (0x00) #define txFIFOInterruptDisabled (0x00) //SCI Rx FIFO Register (SCIFFRX) Macros #define rxFIFORESET (0x00) #define rxFIFOInterruptDisabled (0x00) //Auto-Baud Detection Register #define autoBaudDetectAlignmentDisabled (0x00) //Debug Behaviour Register #define stopOnSuspend (0x00) //Function Prototypes void init_SCI(void); void SCI_Machine(void);
