请问在ad，da，dma转换中这个函数是什么意思
void Fill_Buffer(uint16_t *pBuffer, uint16_t BufferLenght, uint32_t Offset) {   uint16_t IndexTmp = 0;     /* Put in global buffer different values */   for (IndexTmp = 0; IndexTmp < BufferLenght; IndexTmp++ )   {     pBuffer[IndexTmp] = IndexTmp + Offset;   } }