TI中文支持网void Flash_DmaWrite( unsigned char *pFlashAddr, unsigned char *pSrcBuf, unsigned int Length ) { dmaConfig.SRCADDRH = ((unsigned int)pSrcBuf >> 8) & 0x00FF; dmaConfig.SRCADDRL = (unsigned int)pSrcBuf & 0x00FF; dmaConfig.DESTADDRH = ((unsigned int)&X_FWDATA >> 8) & 0x00FF; dmaConfig.DESTADDRL = (unsigned int)&X_FWDATA & 0x00FF; dmaConfig.VLEN = DMA_VLEN_USE_LEN; dmaConfig.LENH = (Length >> 8) & 0x00FF; dmaConfig.LENL = Length & 0x00FF; dmaConfig.WORDSIZE = DMA_WORDSIZE_BYTE; dmaConfig.TMODE = DMA_TMODE_SINGLE; dmaConfig.TRIG = DMA_TRIG_FLASH; dmaConfig.SRCINC = DMA_SRCINC_1; dmaConfig.DESTINC = DMA_DESTINC_0; dmaConfig.IRQMASK = DMA_IRQMASK_DISABLE; dmaConfig.M8 = DMA_M8_USE_8_BITS; dmaConfig.PRIORITY = DMA_PRI_HIGH;
/* The DMA configuration data structure may reside at any location in * unified memory space, and the address location is passed to the DMA * through DMA0CFGH:DMA0CFGL. */ DMA0CFGH = ((unsigned int)&dmaConfig >> 8) & 0x00FF; DMA0CFGL = (unsigned int)&dmaConfig & 0x00FF;
/* Waiting for the flash controller to be ready */ while (FCTL & FCTL_BUSY);
/* Configuring the flash controller. Setings: * FWT: 0x11 (default setting, matches 13 MHz clock frequency). * FADDRH:FADDRL: point to the area in flash to write to – flashDataAddr. */ FWT = 0x11; FADDRH = (int)pFlashAddr >> 9; FADDRL = ((int)pFlashAddr >> 1) & ~0xFF00;
/* Erase the page that will be written to. */ Flash_StartErase();
/* Wait for the erase operation to complete. */ while (FCTL & FCTL_BUSY);
/* Arm the DMA channel, so that a DMA trigger will initiate DMA writing. */ DMAARM |= DMA_CHANNEL_0; // Arm DMA channel 0
/* Enable flash write. Generates a DMA trigger. Must be aligned on a 2-byte * boundary and is therefor implemented in assembly. */ Flash_StartWrite();
/* Wait for DMA transfer to complete. */ while (!(DMAIRQ & DMAIRQ_DMAIF0));
/* Wait until flash controller not busy. */ while (FCTL & (FCTL_BUSY | FCTL_SWBSY));
/* By now, the transfer is completed, so the transfer count is reached. * The DMA channel 0 interrupt flag is then set, so we clear it here. */ DMAIRQ &= ~DMAIRQ_DMAIF0; }
gaoyang9992006：
请发到http://www.deyisupport.com/question_answer/wireless_connectivity/f/45.aspx
另外你排版看着乱。
