DMA_InitStructure.DMA_BufferSize=OUTLENGTH; DMA_InitStructure.DMA_PeripheralInc=DMA_PeripheralInc_Enable; DMA_InitStructure.DMA_MemoryInc=DMA_MemoryInc_Enable; DMA_InitStructure.DMA_PeripheralDataSize=DMA_PeripheralDataSize_HalfWord; DMA_InitStructure.DMA_MemoryDataSize=DMA_MemoryDataSize_HalfWord; DMA_InitSt...
dma = direct memory access 就是直接存取内存，当然是memory to memory 内存到内存。。
其中可以通过串口监控DMA开始与结束目标地址空间的数据,此外也可以通过LED的状态,知晓DMA是否执行完毕。 此外还可以通过Dubeg模式下,memory观察目标地址空间的数据变化。 上图是发起DMA前,地址空间0x801000往后的地址全为零。 上图是DMA传输完成后,地址空间0x801000往后的地址的数据变成红色,发生改变,数值与chr数组中元...
Solved: Hi All, I'm trying to do a memory-to-memory transfer via DMA in the POSC6. I was transferring 32 bits of data from one memory location to
, {R2-R5} type commands it can save the memset value to multiple registers and then do an instruction based burst write from these registers to SRAM - a time of 8.6us is measured in this case which I don't think that DMA will be able to match (?). This is howev...
Hi All I have been doing some memory-to-memory DMA tests on the i.MX RT 1020 and found that I could transfer between OCRAM, ITC and DTC in any
memory-to-memory DMA with DMA_SIZE_32 is consistently the fastest, up to 3 times as fast as memcpy() for large data transfers for transfers up to about 128 bytes, DMA with DMA_SIZE_8 is faster than memcpy() for larger transfers, memcpy() is faster than DMA_SIZE_8, leveling out at...
aWant to shake the body into a pink fairy, 想要震动身体入一位桃红色神仙,[translate] aA camellia, gardenia, they filled the garden, 山茶花,栀子,他们填装了庭院,[translate] aTransmit counters are updated when data is moved from on-board packet DMA memory to on-board MAC memory. 传输柜台在数...
int * tx_data = DMA_MEMORY_BASE_ADDRESS; (where DMA_MEMORY_BASE_ADDRESS is defined automatically by sopc builder in your system file) However, in your specific case, if you know that memory range is available, the error can be due to the fact you are exceeding max dma length. ...
Hi, I would like to know if it is possible to set up a stream-to-memory transfer for an SG-DMA controller, set the 'bytes_to_transfer'