怎么通过SPI写入SPI FLASH

你好，我使用：-pic32mx795f512l-sst25vf016b-SPI波特率1MHz（我已经尝试过1-10MHz）-主模式增强缓冲-中断优先级1-子中断优先级0-8位数据宽度-空闲低边上升[link=mailto:-DRV_SST@%]-DRV_SST[/link]25闪存函数，我对SP的写入非常不一致我闪闪发光。每个200字节的错误大约是1个错误字节。我已经设置了一个比较函数来比较写入到SPI的字节和从SPI中读取的字节。这个错误率是当我写1000字节。当我减少写入的字节数时，错误增加（即，如果我发送20字节，每15字节有一个错误，如果我发送5000字节，每400字节有一个错误）。我说的大概是因为我的测试结果。我使用SST_25驱动程序函数提供的自动寻址写方法。我99%肯定写和不读的问题，因为我可以多次读取（我已经测试了大约15次）并且总是收到相同的结果（数据缓冲区中的相同字节）。有人有什么建议或想法，为什么我的沟通不是100%准确？我已将示波器连接到SPI的SCK和SDO线路上，噪声似乎最小/不相关。谢谢。



      以下为原文

    Hello I am using:
-pic32mx795f512l
-sst25vf016b
-SPI baud rate 1MHz (I have tried 1-10MHz)
-Master mode
-Enhanced buffer
-Interrupt priority 1
-sub-Interrupt priority 0
-8-bit data width
-Idle low edge rise
[link=mailto:-DRV_SST@%]-DRV_SST[/link]25 flash functions

I'm having very inconsistent writing to my SPI Flash.  The error is approximately 1 wrong byte per 200 bytes.  I have set up a compare function to compare the byte written to the SPI and read from the SPI.  This error ratio is when I Write 1000 bytes.  When I reduced the amount of bytes I write, the error increases ( i.e. if I send 20 bytes, there is 1 error every 15 bytes, if I send 5000 bytes there is one error every 400 bytes.  I am saying APPROXIMATELY due to my testing results ).  I am using the autoaddressincrement write approach offered by the SST_25 driver functions.

I am 99% positive the problem is with write and not read because I can read multiple times ( i have tested around 15 times) and always receive the same results (same bytes in the databuffer).  Anyone have any suggestions or ideas why my communication is not 100% accurate?  I have hooked up the oscilloscope to the SCK and SDO lines of the SPI and the noise seems to be minimal/irrelevant.  Thanks.