This procedure is a description through the USB virtual into a serial port, and realize the modbus agreement communications. This program based on fire cow development board, we want to help.

virtual com modbus communication\虚拟串口8999\Virtual_COM_Port-VCPDriver_V1.1_Setup\VCPDriver_V1.1_Setup.exe
................................\............\安装说明.txt
................................\............\官网STM32_usb_\STM32_USB-FS-Device_Lib_V3.2.1\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c
................................\............\..............\..............................\.........\.....\...\...........\core_cm3.h
................................\............\..............\..............................\.........\.....\...\DeviceSupport\ST\Release_Notes_for_STM32F10x_CMSIS.html
................................\............\..............\..............................\.........\.....\...\.............\..\STM32F10x\startup\arm\startup_stm32f10x_cl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_hd.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_ld.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_ld_vl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_md.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_md_vl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_xl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\gcc_ride7\startup_stm32f10x_cl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_hd.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_ld.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_ld_vl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_md.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_md_vl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\.........\startup_stm32f10x_xl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\iar\startup_stm32f10x_cl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_hd.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_ld.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_ld_vl.s
................................\............\..............\..............................\.........\.....\...\.............\..\.........\.......\...\startup_stm32f10x_md.s
................................\............\..............\..............................\.........\.....\...\.............\.

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