cc2530 通过DMA访问flash问题

void Flash_PageErase( int pg)

{

  FADDRH = pg<<1;

  FCTL |= 0x01; //启动页面擦除

  while (FCTL & 0x80); //等待擦除完成

}

void WriteFlashDMA( uint16 saddr, uint16 length, uint16 flashadr) //Write Flash, DMA Method

//Length Must be Divisible by 4 or last bytes fail to write

{

//配置DMA通道每次传送一个字节

  DMA_DESC dmaConfig0;//定义DMA通道

  //MEMCTR|=0X07;//将bank 7 映射到Xdata区

  dmaConfig0.SRCADDRH  = (saddr >> 8) & 0x00FF; //XData - To Be Written to Flash - Gets Incremented；存储data的高8位；

  dmaConfig0.SRCADDRL  = saddr & 0x00FF;//存储data地址的低8位；

  dmaConfig0.DESTADDRH = (((int)&FWDATA) >> 8) & 0x00FF; //Flash Controller Data Address - Flash Controller Writes Data//存储写寄存器的地址的高8位

  dmaConfig0.DESTADDRL = ((int)&FWDATA) & 0x00FF;//存储写寄存器的低8位；

  dmaConfig0.VLEN      = 0; //Variable Length Transfer - 0=Fixed LEN Transfer//采用LEN作为传送长度

  dmaConfig0.LENH      = (length>>8) & 0x00FF; //Number of WORDSZIE in Transfer - Must be Divisible by 4 - NET_ADDR_SIZE=4//存储传送长度高5位

  dmaConfig0.LENL      = length & 0x00FF;//存储长度低8位；

  dmaConfig0.WORDSIZE  = 0; //Size of Each Transfer - 0=8 Bit；每个DMA传送采用8位传送

  dmaConfig0.TMODE     = 0; //Transfer Mode - 1=Block, 0=Single，传送模式为单一模式

  dmaConfig0.TRIG      = 18; //DMA Trigger - 0=Manual Via DMAREQ, 18=Flash；flash触发

  dmaConfig0.SRCINC    = 0; //Source Address Increment - 1=1 Byte//源地址增量模式为1字节/字

  dmaConfig0.DESTINC   = 1; //Destination Address Increment - 0=0 Bytes (Always Write to FWDATA, No Need to Increment)目标地址增量模式0字节/字

  dmaConfig0.IRQMASK   = 0; //Interrupt Mask - 0=Disable Interrupts//禁止通道完成中断产生

  dmaConfig0.M8        = 0; //8th Bit Mode - 0=Use All 8 Bits使用全部8位作为传送长度

  dmaConfig0.PRIORITY  = 2; //Priority - 10(2)=High Priority优先级为DMA优先

//DMA模式写

  while (FCTL & 0x80); //Wait Until DMA Controller is Available - Busy Bit 7//等待写或擦除状态被激活

  

  /********* 存储写入flash页地址 ***********************************************/

  

  FADDRH =(flashadr >> 8) & 0x00FF; // 

  FADDRL =(flashadr >> 0) & 0x00FF;  //

  //通道0配置地址

  DMA0CFGH = (((int)&dmaConfig0) >> 8) & 0x00FF; //Pass DmaConfig0

  DMA0CFGL = ((int)&dmaConfig0) & 0x00FF;

   

  

  DMAARM |= 0x01; //Arm the DMA Channel//通道0进去工作状态

  FCTL |= 0x02; //Start Write

    //while (!(DMAIRQ & 0x01)); //Wait Until Write Complete

    //DMAIRQ &= 0xFE; //Clear Any DMA IRQ on Channel 0 - Bit 0

  while (FCTL & (0x80)); //Wait Until Flash Controller is Not Busy - Busy Bit 7//等待或者擦除状态激活

}

  halDMADesc_t *ch = HAL_NV_DMA_GET_DESC();



  HAL_DMA_SET_SOURCE(ch, buf);

  HAL_DMA_SET_DEST(ch, &FWDATA);

  HAL_DMA_SET_VLEN(ch, HAL_DMA_VLEN_USE_LEN);

  HAL_DMA_SET_LEN(ch, (cnt * HAL_FLASH_WORD_SIZE));

  HAL_DMA_SET_WORD_SIZE(ch, HAL_DMA_WORDSIZE_BYTE);

  HAL_DMA_SET_TRIG_MODE(ch, HAL_DMA_TMODE_SINGLE);

  HAL_DMA_SET_TRIG_SRC(ch, HAL_DMA_TRIG_FLASH);

  HAL_DMA_SET_SRC_INC(ch, HAL_DMA_SRCINC_1);

  HAL_DMA_SET_DST_INC(ch, HAL_DMA_DSTINC_0);

  // The DMA is to be polled and shall not issue an IRQ upon completion.

  HAL_DMA_SET_IRQ(ch, HAL_DMA_IRQMASK_DISABLE);

  HAL_DMA_SET_M8( ch, HAL_DMA_M8_USE_8_BITS);

  HAL_DMA_SET_PRIORITY(ch, HAL_DMA_PRI_HIGH);

  HAL_DMA_CLEAR_IRQ(HAL_NV_DMA_CH);

  HAL_DMA_ARM_CH(HAL_NV_DMA_CH);



  FADDRL = (uint8)addr;

  FADDRH = (uint8)(addr >> 8);

  

//  DMA0CFGH =(uint8)(((uint)&dmaCh0) >> 8) & 0x00FF; 

//  DMA0CFGL = (uint8)((uint)&dmaCh0) & 0x00FF;

  

  FCTL |= 0x02;         // Trigger the DMA writes.

  while (FCTL & 0x80);  // Wait until writing is done.