D1 Nezha development board power on record

Preface

• D1 Nezha development board , be based on RISC-V 64 An architecture , The elder brother of the flat head 64 position C906 The core , Has been ARM Domain mix , Now start to understand RISCV64 framework , be familiar with RT-Thread Smart (rt-smart)

• I'm passionate about finding and developing information , Mainly in the Quanzhi online developer community , The information is basically Linux The majority , As Quan Zhi pushed Tina Linux

• The goal is ： be based on D1 Nezha development board , function rt-smart

Power on record

• Actually, the root is inserted TYPE-C USB The line is over , But I made a big mistake .

• First, there are two on the development board TYPE-C Of USB Interface , One is PWR【 Power Supply 】, One is 【OTG】,USB-OTG Interface , Access to electricity , Without saying , Is inserted into the PWR Power supply USB That's right

• In is 【 Debug serial port 】, I use CP2102 Of USB Serial port module , Access , I find , There is nothing 【 Dynamic and static 】, At this time, I found , This Development board , There is no such thing as 【 Reset button 】

• I had to plug in USB Line , It is found that the receiving end of the serial port flashes several times , The serial port terminal does not receive any valid information

The board didn't start

• Development board , It's just for tossing , I change USB Serial port TX、RX, It is found that the serial port still has no information , I switched to another one that I thought was available USB To serial port , There is still no serial port information , Is this 【 Development board 】 Wiped clean , Leave no debugging information ？

• I began to doubt the serial port 【 Baud rate 】 了 , hold 115200bps, Change it to 921600bps, There is still no information , There is no garbled code

Check out the forum of Quanzhi

• This low-level serial port printing is not even a problem , There was not a single hair , It seems to have won a prize , I think the board was erased , I started looking at 【 Firmware burning 】 And 【 Chip start 】 The article

• Inadvertently , I'll check the schematic diagram , hold USB Line usage 【OTG】 that USB Power supply , See if you can identify a virtual USB Interface for downloading programs , And I found out 【DEBUG】 Data from the serial port ...

Power on successfully

• Multiple verification ,USB Line insertion 【OTG】, It can start normally , This development board comes from Xiong da ,rt-smart It's all running . This should be USB The problem of startup .

• Just power on , It should not start ,USB, You can start , be based on SD card , This start-up process , Take a deep look at the back

Summary

• The development board is powered on successfully , The things that need to be studied in depth are all behind

• I got a ride D1 Nezha development board rt-smart Minimum system , Next, let's talk about the construction process

• Most of the information on the current development board , Can be in Quanzhi online Developer Forum find