2022 year 6 At the beginning of this month, Hezhou was newly listed Air32F103 series MCU, On the market STM32F103 The clone army has added a new member .

I don't know which brand it is this time , branch Air32F103CBT6 and Air32F103CCT6 Two models , Namely 32K RAM + 128K FLASH and 32K RAM + 256K FLASH, The highest dominant frequency supported is bright , All are 216MHz, Because they can Pin2Pin Replace STM32F103 Of lqfp48 encapsulation , So you can change it to something like Bluepill This kind of development board can be found everywhere , High playability .

CBT6 I bought two pieces of the development board as soon as it came into the market , It's been a long time , Because there are many epidemics and daily affairs , Never had time to try . I did my homework at the weekend .

Hardware

Development board

PCB Dynamic structure diagram https://wiki.luatos.com/_static/bom/Air32F103.html

In the form of ticket hole PCB encapsulation , Constant size and so many that are of little use to me VCC and GND. 5x2 The design of the double row needle is convenient to be used as a variety of Link Use

Double row needle welding

Double row needle welding is a challenge for perfectionists , Because there is a gap between the needle and the board , It is easy to weld with deviation , Here's a simple way , That is, a piece of folded paper is padded on both sides to fix it slightly , Position the needle row , Show a pair of pin

Put this pair pin After welding, you can take out the paper and weld the rest , This is very positive .

Fly line

According to the board PCB, Not exported Pin Yes :

  • PA11, PA12, stay type-c mouth
  • PB2, PB10, PB11 On board LED

among PB2 yes BOOT1 No need , The other four can be led out by flying wires , The figure below is for reference , A certain welding technology is required , Inexperienced do not try .

Burning tools

image STM32 equally , You can use all kinds of link: ST-Link, DAP-Link, JLink

The development board comes with DAP-Link The firmware , If you buy two , One piece can be used to burn another piece .

Software

Just say Windows Under the environment , The main software needed is Keil5 MDK, STM32F103 Of SPL library , Corresponding Air32F103 Download algorithm file . If you use ST-Link, It also needs to be used for burning ST-LINK Utility.

Kei5 MDK

There are many instructions for downloading and installing on the Internet , Not introduced

ST-LINK Utility ( If you use ST-Link download )

from ST Download from the official website ST-LINK Utility or st-link drive , Cannot be used without installation st-link

Download the algorithm file , Keil Chip model library

https://gitee.com/openLuat/luatos-soc-air32f103/tree/master/AIR_Jlink_Keil

Under this link is : CBT6 and CCT6 Of flash Algorithm file , Keil Chip model library , DAP-Link The firmware

DAP-Link Use

The default value of the development board is daplink The firmware , The firmware supports debugging and downloading , And support U Disk mode burning and virtual serial port , WIKI Instructions on https://wiki.luatos.com/chips/air32f103/board.html#id2 The above has been explained very clearly .

As DAP-Link Wiring instructions used

  • The green light in the middle indicates the communication with the connected device
  • PB14 by SWDIO
  • PB13 by SWCLK
  • PB0 For reset control
  • PA2 Virtual serial port TX
  • PA3 Virtual serial port RX

Be careful : On the board SWDIO and SWCLK It is a burning port used as a lower computer , As an upper computer, it is necessary to use PB13 and PB14.

Description of the connection used as the lower computer

  • The row of double row pins on the back of the board is for burning and debugging SWD mouth , Use according to the logo 3.3V, GND, SWDIO, SWCLK Connect the upper computer .
  • If you use Air32F103 The development board is connected as the upper computer and the lower computer , stay Kei MDK Of Debug Page directly click CMSIS-DAP Debugger Of Settings when , Will prompt SWD/JTAG Communication Failure Error of . Need to press Settings Before button , Press and hold the... Of the lower computer RST Button , After that, I'll order Settings Button , Can correctly detect .

Development instructions

Because it's equivalent to STM32F103 And the domestic public XX32F103 The army of clones , Reference resources STM32F103 To develop the project , There are too many materials in this field . You can refer to some articles written before STM32

link

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