To illustrate, here will be used as an example STM32F103C8T6.
SWD interface to download the program in IAR EWARM
1.Open the IAR EWARM, and create a new project, Tool chain ARM can choose, click OK.
Select the menu bar Project-> Options ..., option box will pop up, as shown below
2.Select General Options -> Target page, then select the Processor variant column in the Device, and then click the right button, and in turn find STM32F103C8 processor.
3.Then choose General Options -> Library Configuration page stdout / stderr section of Via SWO.
4.Then select Debugger -> Setup -> Driver -> J-Link / J-Trace.
5.Just find a way to drive, set as shown below, and click OK。
You can now click on the columnCompile button,Such error can clickRun button to download the firmware.