CC2530_SerialBoot

/************************************************************************************************** Filename: flashdrv_boot.c Revised: $Date: 2009-03-11 09:03:58 -0700 (Wed, 11 Mar 2009) $ Revision: $Revision: 19377 $ Description: Implementation of flash driver for CC2530 boot loader. The user of this driver (boot loader) has to be near code model and interrupt is always disabled (such assumption is to reduce code size). Copyright 2008-2009 Texas Instruments Incorporated. All rights reserved. IMPORTANT: Your use of this Software is limited to those specific rights granted under the terms of a software license agreement between the user who downloaded the software, his/her employer (which must be your employer) and Texas Instruments Incorporated (the "License"). You may not use this Software unless you agree to abide by the terms of the License. The License limits your use, and you acknowledge, that the Software may not be modified, copied or distributed unless embedded on a Texas Instruments microcontroller or used solely and exclusively in conjunction with a Texas Instruments radio frequency transceiver, which is integrated into your product. Other than for the foregoing purpose, you may not use, reproduce, copy, prepare derivative works of, modify, distribute, perform, display or sell this Software and/or its documentation for any purpose. YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE PROVIDED �AS IS� WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT, NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS. Should you have any questions regarding your right to use this Software, contact Texas Instruments Incorporated at www.TI.com. **************************************************************************************************/ #include "flashdrv.h" #include <ioCC2530.h> /********************************************************************* * MACROS */ /********************************************************************* * Constants */ #define FLASHDRV_DMA_CH 0 #define ERASE 0x01 /********************************************************************* * Typedefs */ // DMA descriptor typedef struct { unsigned char srcAddrH; unsigned char srcAddrL; unsigned char dstAddrH; unsigned char dstAddrL; unsigned char xferLenV; unsigned char xferLenL; unsigned char ctrlA; unsigned char ctrlB; } flashdrvDmaDesc_t; /********************************************************************* * Local variables */ static flashdrvDmaDesc_t flashdrvDmaDesc; // DMA descriptor table /********************************************************************* * Local functions */ static __monitor void flashdrvWriteTrigger(void); /************************************************************************************************** * @fn FLASHDRV_Init * * @brief This function initializes flash driver. * * input parameters * * None. * * output parameters * * None. * * @return None. */ void FLASHDRV_Init(void) { #if FLASHDRV_DMA_CH == 0 DMA0CFGH = (unsigned char) ((unsigned short) &flashdrvDmaDesc >> 8); DMA0CFGL = (unsigned char) (unsigned short) &flashdrvDmaDesc; #else # error "flashdrv DMA channel other than 0 is not supported" #endif DMAIE = 1; } /************************************************************************************************** * @fn FLASHDRV_Read * * @brief This function reads 'cnt' bytes from the internal flash. * * input parameters * * @param pg - Valid HAL flash page number (ie < 128). * @param offset - Valid offset into the page (so < HAL_NV_PAGE_SIZE and byte-aligned is ok). * @param buf - Valid buffer space at least as big as the 'cnt' parameter. * @param cnt - Valid number of bytes to read: a read cannot cross into the next 32KB bank. * * output parameters * * None. * * @return None. */ void FLASHDRV_Read(unsigned char pg, unsigned short offset, unsigned char *buf, unsigned short cnt) { // Calculate the offset into the containing flash bank as it gets mapped into XDATA. unsigned char *ptr = (unsigned char *)(offset + 0x8000) + ((pg % 16) * 2048); unsigned char memctr = MEMCTR; // Save to restore. pg /= 16; // Calculate the flash bank from the flash page. // Calculate and map the containing flash bank into XDATA. MEMCTR = (MEMCTR & 0xF8) | pg; while (cnt--) { *buf++ = *ptr++; } MEMCTR = memctr; } /************************************************************************************************** * @fn FLASHDRV_Write * * @brief This function reads 'cnt' bytes from the internal flash. * * input parameters * * @param addr - Valid HAL flash write address: actual addr / 4 and quad-aligned. * @param buf - Valid buffer space at least as big as 'cnt' X 4. * @param cnt - Number of 4-byte blocks to write. * * output parameters * * None. * * @return None. */ void FLASHDRV_Write(unsigned short addr, unsigned char *buf, unsigned short cnt) { flashdrvDmaDesc.srcAddrH = (unsigned char) ((unsigned short)buf >> 8); flashdrvDmaDesc.srcAddrL = (unsigned char) (unsigned short) buf; flashdrvDmaDesc.dstAddrH = (unsigned char) ((unsigned short)&FWDATA >> 8); flashdrvDmaDesc.dstAddrL = (unsigned char) (unsigned short) &FWDATA; flashdrvDmaDesc.xferLenV = (0x00 << 5) | // use length (unsigned char)(unsigned short)(cnt >> 6); // length (12:8). Note that cnt is flash word flashdrvDmaDesc.xferLenL = (unsigned char)(unsigned short)(cnt * 4); flashdrvDmaDesc.ctrlA = (0x00 << 7) | // word size is byte (0x00 << 5) | // single byte/word trigger mode 18; // trigger source is flash flashdrvDmaDesc.ctrlB = (0x01 << 6) | // 1 byte/word increment on source address (0x00 << 4) | // zero byte/word increment on destination address (0x00 << 3) | // The DMA is to be polled and shall not issue an IRQ upon completion. (0x00 << 2) | // use all 8 bits for transfer count 0x02; // DMA priority high DMAIRQ &= ~( 1 << FLASHDRV_DMA_CH ); // clear IRQ DMAARM = (0x01 << FLASHDRV_DMA_CH ); // arm DMA FADDRL = (unsigned char)addr; FADDRH = (unsigned char)(addr >> 8); flashdrvWriteTrigger(); } /************************************************************************************************** * @fn FLASHDRV_Erase * * @brief This function must be copied to RAM before running because it triggers and then * awaits completion of Flash write, which can only be done from RAM. * * input parameters * * @param pg - page to erase * * output parameters * * None. * * @return None. */ void FLASHDRV_Erase(unsigned char pg) { FADDRH = pg << 1; FCTL = ERASE; asm("NOP"); while(FCTL == 0x80); } /************************************************************************************