STM32 F103 microcontroller serial port that accepts character data (tested successfully)!

STM32串口通信\Output\STM32flash.hex
.............\......\MDKDEBUG\LIS\startup_stm32f10x_md.lst
.............\......\........\...\STM32hedong.map
.............\......\........\OBJ\STM32hedong.plg
.............\......\........\...\startup_stm32f10x_md.d
.............\......\........\...\startup_stm32f10x_md.o
.............\......\........\...\main.__i
.............\......\........\...\core_cm3.crf
.............\......\........\...\core_cm3.o
.............\......\........\...\ExtDll.iex
.............\......\........\...\core_cm3.d
.............\......\........\...\system_stm32f10x.crf
.............\......\........\...\system_stm32f10x.o
.............\......\........\...\main.d
.............\......\........\...\misc.crf
.............\......\........\...\misc.o
.............\......\........\...\stm32f10x_rtc.d
.............\......\........\...\stm32f10x_adc.crf
.............\......\........\...\stm32f10x_adc.o
.............\......\........\...\stm32f10x_it.__i
.............\......\........\...\stm32f10x_bkp.crf
.............\......\........\...\stm32f10x_bkp.o
.............\......\........\...\stm32f10x_sdio.d
.............\......\........\...\stm32f10x_can.crf
.............\......\........\...\stm32f10x_can.o
.............\......\........\...\stm32f10x_it.d
.............\......\........\...\stm32f10x_cec.crf
.............\......\........\...\stm32f10x_cec.o
.............\......\........\...\stm32f10x_spi.d
.............\......\........\...\stm32f10x_crc.crf
.............\......\........\...\stm32f10x_crc.o
.............\......\........\...\system_stm32f10x.d
.............\......\........\...\stm32f10x_dac.crf
.............\......\........\...\stm32f10x_dac.o
.............\......\........\...\stm32f10x_tim.d
.............\......\........\...\stm32f10x_dbgmcu.crf
.............\......\........\...\stm32f10x_dbgmcu.o
.............\......\........\...\main.o
.............\......\........\...\misc.d
.............\......\........\...\drv_led.__i
.............\......\........\...\stm32f10x_dma.crf
.............\......\........\...\stm32f10x_dma.o
.............\......\........\...\stm32f10x_usart.d
.............\......\........\...\stm32f10x_exti.crf
.............\......\........\...\stm32f10x_exti.o
.............\......\........\...\drv_led.d
.............\......\........\...\stm32f10x_flash.crf
.............\......\........\...\stm32f10x_flash.o
.............\......\........\...\stm32f10x_wwdg.d
.............\......\........\...\stm32f10x_fsmc.crf
.............\......\........\...\stm32f10x_fsmc.o
.............\......\........\...\stm32f10x_adc.d
.............\......\........\...\stm32f10x_gpio.crf
.............\......\........\...\stm32f10x_gpio.o
.............\......\........\...\stm32f10x_it.o
.............\......\........\...\stm32f10x_i2c.crf
.............\......\........\...\stm32f10x_i2c.o
.............\......\........\...\STM32hedong.axf
.............\......\........\...\stm32f10x_iwdg.crf
.............\......\........\...\stm32f10x_iwdg.o
.............\......\........\...\stm32f10x_pwr.crf
.............\......\........\...\stm32f10x_pwr.o
.............\......\........\...\drv_systick.d
.............\......\........\...\stm32f10x_rcc.crf
.............\......\........\...\stm32f10x_rcc.o
.............\......\........\...\stm32f10x_bkp.d
.............\......\........\...\stm32f10x_rtc.crf
.............\......\........\...\stm32f10x_rtc.o
.............\......\........\...\stm32f10x_sdio.crf
.............\......\........\...\stm32f10x_sdio.o
.............\......\........\...\stm32f10x_can.d
.............\......\........\...\stm32f10x_spi.crf
.............\......\........\...\stm32f10x_spi.o
.............\......\........\...\stm32f10x_bkp.__i
.............\......\........\...\stm32f10x_tim.crf
.............\......\........\...\stm32f10x_tim.o
.............\......\........\...\stm32f10x_cec.d
.............\......\........\...\stm32f10x_usart.crf
.............\......\........\...\stm32f10x_usart.o
.............\......\........\...\stm32f10x_wwdg.crf
.............\......\........\...\stm32f10x_wwdg.o
.............\......\......

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