Stm32f103vct6 USB serial port, the IAR environment source code, for your reference.

PR100\Debug\Exe\c.out
.....\.....\...\c.sim
.....\.....\Obj\core_cm3.o
.....\.....\...\core_cm3.pbi
.....\.....\...\core_cm3.pbi.cout
.....\.....\...\hw_config.o
.....\.....\...\hw_config.pbi
.....\.....\...\hw_config.pbi.cout
.....\.....\...\Init.o
.....\.....\...\Init.pbi
.....\.....\...\Init.pbi.cout
.....\.....\...\main.o
.....\.....\...\main.pbi
.....\.....\...\main.pbi.cout
.....\.....\...\misc.o
.....\.....\...\misc.pbi
.....\.....\...\misc.pbi.cout
.....\.....\...\Project.pbd
.....\.....\...\Project.pbd.browse
.....\.....\...\startup_stm32f10x_hd.o
.....\.....\...\startup_stm32f10x_hd11.o
.....\.....\...\startup_stm32f10x_md.o
.....\.....\...\stm32f10x_adc.o
.....\.....\...\stm32f10x_adc.pbi
.....\.....\...\stm32f10x_adc.pbi.cout
.....\.....\...\stm32f10x_bkp.o
.....\.....\...\stm32f10x_bkp.pbi
.....\.....\...\stm32f10x_bkp.pbi.cout
.....\.....\...\stm32f10x_can.o
.....\.....\...\stm32f10x_can.pbi
.....\.....\...\stm32f10x_can.pbi.cout
.....\.....\...\stm32f10x_cec.o
.....\.....\...\stm32f10x_cec.pbi
.....\.....\...\stm32f10x_cec.pbi.cout
.....\.....\...\stm32f10x_crc.o
.....\.....\...\stm32f10x_crc.pbi
.....\.....\...\stm32f10x_crc.pbi.cout
.....\.....\...\stm32f10x_dac.o
.....\.....\...\stm32f10x_dac.pbi
.....\.....\...\stm32f10x_dac.pbi.cout
.....\.....\...\stm32f10x_dbgmcu.o
.....\.....\...\stm32f10x_dbgmcu.pbi
.....\.....\...\stm32f10x_dbgmcu.pbi.cout
.....\.....\...\stm32f10x_dma.o
.....\.....\...\stm32f10x_dma.pbi
.....\.....\...\stm32f10x_dma.pbi.cout
.....\.....\...\stm32f10x_exti.o
.....\.....\...\stm32f10x_exti.pbi
.....\.....\...\stm32f10x_exti.pbi.cout
.....\.....\...\stm32f10x_flash.o
.....\.....\...\stm32f10x_flash.pbi
.....\.....\...\stm32f10x_flash.pbi.cout
.....\.....\...\stm32f10x_fsmc.o
.....\.....\...\stm32f10x_fsmc.pbi
.....\.....\...\stm32f10x_fsmc.pbi.cout
.....\.....\...\stm32f10x_gpio.o
.....\.....\...\stm32f10x_gpio.pbi
.....\.....\...\stm32f10x_gpio.pbi.cout
.....\.....\...\stm32f10x_i2c.o
.....\.....\...\stm32f10x_i2c.pbi
.....\.....\...\stm32f10x_i2c.pbi.cout
.....\.....\...\stm32f10x_it.o
.....\.....\...\stm32f10x_it.pbi
.....\.....\...\stm32f10x_it.pbi.cout
.....\.....\...\stm32f10x_iwdg.o
.....\.....\...\stm32f10x_iwdg.pbi
.....\.....\...\stm32f10x_iwdg.pbi.cout
.....\.....\...\stm32f10x_pwr.o
.....\.....\...\stm32f10x_pwr.pbi
.....\.....\...\stm32f10x_pwr.pbi.cout
.....\.....\...\stm32f10x_rcc.o
.....\.....\...\stm32f10x_rcc.pbi
.....\.....\...\stm32f10x_rcc.pbi.cout
.....\.....\...\stm32f10x_rtc.o
.....\.....\...\stm32f10x_rtc.pbi
.....\.....\...\stm32f10x_rtc.pbi.cout
.....\.....\...\stm32f10x_sdio.o
.....\.....\...\stm32f10x_sdio.pbi
.....\.....\...\stm32f10x_sdio.pbi.cout
.....\.....\...\stm32f10x_spi.o
.....\.....\...\stm32f10x_spi.pbi
.....\.....\...\stm32f10x_spi.pbi.cout
.....\.....\...\stm32f10x_tim.o
.....\.....\...\stm32f10x_tim.pbi
.....\.....\...\stm32f10x_tim.pbi.cout
.....\.....\...\stm32f10x_usart.o
.....\.....\...\stm32f10x_usart.pbi
.....\.....\...\stm32f10x_usart.pbi.cout
.....\.....\...\stm32f10x_wwdg.o
.....\.....\...\stm32f10x_wwdg.pbi
.....\.....\...\stm32f10x_wwdg.pbi.cout
.....\.....\...\system_stm32f10x.o
.....\.....\...\system_stm32f10x.pbi
.....\.....\...\system_stm32f10x.pbi.cout
.....\.....\...\usb_core.o
.....\.....\...\usb_core.pbi
.....\.....\...\usb_core.pbi.cout
.....\.....\...\usb_desc.o
.....\.....\...\usb_desc.pbi
.....\.....\...\usb_desc.pbi.cout

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