STM32 SWD烧写

最小电路 stm32f103x

内部已经集成了振荡电路，可以省略；rst引脚电路，可以省略，boot0,boot1不需要设置

正常烧录 

    -------------------------------------------------------------------STM32CubeProgrammer v2.9.0                  -------------------------------------------------------------------ST-LINK SN  : 16004A002933353739303541
ST-LINK FW  : V2J38S7
Board       : --
Voltage     : 3.17V
SWD freq    : 4000 KHz
Connect mode: Under Reset
Reset mode  : Hardware reset
Device ID   : 0x412
Revision ID : Rev A
Device name : STM32F101/F102/F103 Low-density
Flash size  : 32 KBytes
Device type : MCU
Device CPU  : Cortex-M3
BL Version  : --Memory Programming ...
Opening and parsing file: BlinkSTM32FC8.ino.binFile          : BlinkSTM32FC8.ino.binSize          : 10916 BytesAddress       : 0x08000000 Erasing memory corresponding to segment 0:
Erasing internal memory sectors [0 10]
Download in Progress:File download complete
Time elapsed during download operation: 00:00:00.797RUNNING Program ... Address:      : 0x8000000
Application is running, Please Hold on...
Start operation achieved successfully

不正常上传

ST-LINK SN  : 16004A002933353739303541
ST-LINK FW  : V2J38S7
Board       : --
Voltage     : 3.17V
Error: No STM32 target found!
上传失败: 上传错误：exit status 1

ST-LINK SN  : 16004A002933353739303541
ST-LINK FW  : V2J38S7
Board       : --
Voltage     : 3.17V
Error: ST-LINK error (DEV_TARGET_CMD_ERR)
上传失败: 上传错误：exit status 1

检查电源gnd vcc 所有的vcc gnd 皆连上stlink 3.3 gnd 

官方推荐：不推荐省略晶振，电容，rst复位电路；内部时钟不稳定，

OSC_IN 使用内部时钟时，建议接gnd 

使用内部时钟 串口通信 对时钟要求高的，不建议内部时钟；