【Pocket-RIO试用体验】寻找解决方案ing--上电未检测到Pocket-RIO

电路

终于等来了Pocket-RIO的快递。拿到手，看到双面亚克力包裹的Pocket-RIO电路板，感觉特别的精细。

Pocket-RIO开发板自带LED交替闪的例程，上电后等待一阵时间，FPGA配置完毕即出现两个LED交替闪动。

可惜插上电的时候发现设备管理器中没有任何反应。换了好几根数据线都是如此。但是既然FPGA能够运行LED交替闪动的例程，说明FPGA没问题，不知道是USB端口虚焊，还是ATmega32U芯片的固件出现了问题。

根据MangoTree官方QQ群的反馈，大概是USB端口虚焊，回去再处理一下。

由于没有找到Pocket-RIO的原理图，只能慢慢探索了。

网页搜索“Spartan Atmega32U”发现一个类似的开源项目，Mojo V3（https://embeddedmicro.com/products/mojo-v3.html），也是Spartan FPGA + Atmega32U4进行开发。

The Mojo is a FPGA development board that is designed from the ground up to be easy to use.

The entire goal of the Mojo is to make getting started with FPGA and digital design as easy as possible. To go along with our board we have tutorials to help you get started and expand you knowledge of digital design.

The Mojo is made in the USA.

The Mojo features include

Spartan 6 XC6SLX9 FPGA
84 digital IO pins
8 analog inputs
8 general purpose LEDs
1 reset button
1 LED to show when the FPGA is correctly configured
On board voltage regulation that can handle 4.8V - 12V
A microcontroller (ATmega32U4) used for configuring the FPGA, USB communications, and reading the analog pins
Arduino compatible bootloader allowing you to easily program the microcontroller as well
On board flash memory to store the FPGA configuration file