SPI SS3无法控制

你好，谢谢你看这个帖子。我有一个定制的硬件利用PIC32 MX695F512H，利用IC4，OC5，SPI4和SPI3。虽然固件目前在SPI4上处理一个带有SS引脚位的LCD，但是对于SPI3上的DAC来说，同样的设置不能敲击SS3。DAC上的锁存器可以用来自芯片的二级引脚Rf0劫持，而不必断开引脚43 RD9以获得对DAC的控制。该设置是一个和声，V1.0801项目，SPI3／4通过配置被设置。SPI4在LCD上工作，但SPI3不在DAC上。显然，固件对于LCD和DAC来说是不一样的，但是SPIs应该处理得非常相似。芯片上的引脚43也是RD9、SDA1、IC2、It2、U1CTS、U4RX、SS3、ArrxD0和EXDD2。任何想法为什么PIN 43将不会被我控制！感谢你！西洛林格



      以下为原文

    Hello,

Thank you for taking a looking at this post. I have custom hardware utilizing a PIC32MX695F512H which utilizes the IC4, OC5, SPI4 and SPI3. Though the firmware currently handles an LCD on SPI4 with the SS pin bit banged, the same setup for  A DAC on SPI3 can not bit bang the SS3. The latch on the DAC can be hijacked with a secondary pin RF0 from the chip without having to disconnect pin 43 RD9 to get control of the DAC.
This setup is a hARMony, V1.08.01 project with the SPI3/4 being setup through the configuration. SPI4 works on the LCD but SPI3 does not on the DAC. Obviously, the firmware is not the same for the LCD and DAC but the SPIs should handle very similiarly.
Pin 43 on the chip is also RD9, SDA1, IC2, INT2,U1CTS,U4RX,SS3,AERXD0,and EXTD2. Any thoughts why pin 43 will not be controlled by me!

Appreciate you!

Cy Drollinger