ATSAM4E8C SPI芯片选择

你好，我使用ATSAM4E8C微控制器，我使用SPI协议，没有编码器的两个从设备。一个从属是NPCS1上连接的闪存，另一个是NPCS0.ADCIS工作的基于MaXIM的ADC，但Flash没有正确响应（给出0xFFFFFF JDEC ID）。但是当我使用第一个ADC然后闪存时，这两个设备都工作正常。但这不是我的应用。这两种设备都应该独立工作。对于闪存，我使用的是从ASF直接传输的AT25DFX闪存代码。我陷入了这种情况。请帮我，因为我快用完了。我检查了芯片选择引脚，它也切换（工作）罚款。任何帮助将不胜感激。



      以下为原文

    Hi,
I am using ATSAM4E8C microcontroller.
I am using SPI protocol with two slave devices without encoder. One Slave is Flash Memory connected at NPCS1 and other is maxim Based ADC at NPCS0.

ADC is working Fine but Flash is not responding correctly(giving 0xFFFFFF JDEC ID).

But when i use first ADC then Flash then both devices work correctly.

but that's not my application. Both devices should work independently.

For Flash memory i  am using at25dfx flash code directly ported from ASF.

I am Stuck in this situation. Please help me as i am running out of time.

I checked the Chip select pins also it is toggling(working) fine.

Any help would be appreciated.


Thanks in Advance
Ritesh