使用MDK写的STM32F4的485通信程序，不使用延迟，解决了因485控制端翻转过快而导致的数据发送不完全的情况STM32--RS485\inc\misc.h............\...\stm32f4xx_adc.h............\...\stm32f4xx_can.h............\...\stm32f4xx_crc.h............\...\stm32f4xx_cryp.h............\...\stm32f4xx_dac.h............\...\stm32f4xx_dbgmcu.h............\...\stm32f4xx_dcmi.h............\...\stm32f4xx_dma.h............\...\stm32f4xx_exti.h............\...\stm32f4xx_flash.h............\...\stm32f4xx_fsmc.h............\...\stm32f4xx_gpio.h............\...\stm32f4xx_hash.h............\...\stm32f4xx_i2c.h............\...\stm32f4xx_iwdg.h............\...\stm32f4xx_pwr.h............\...\stm32f4xx_rcc.h............\...\stm32f4xx_rng.h............\...\stm32f4xx_rtc.h............\...\stm32f4xx_sdio.h............\...\stm32f4xx_spi.h............\...\stm32f4xx_syscfg.h............\...\stm32f4xx_tim.h............\...\stm32f4xx_usart.h............\...\stm32f4xx_wwdg.h............\...\USART_Lib.h............\...\tcp_echoserver.h............\...\main.h............\...\netconf.h............\...\serial_debug.h............\...\stm32f4x7_eth_bsp.h............\...\stm32f4x7_eth_conf.h............\...\stm32f4xx_conf.h............\...\stm32f4xx_it.h............\src\misc.c............\...\stm32f4xx_adc.c............\...\stm32f4xx_can.c............\...\stm32f4xx_crc.c............\...\stm32f4xx_cryp.c............\...\stm32f4xx_cryp_aes.c............\...\stm32f4xx_cryp_des.c............\...\stm32f4xx_cryp_tdes.c............\...\stm32f4xx_dac.c............\...\stm32f4xx_dbgmcu.c............\...\stm32f4xx_dcmi.c............\...\stm32f4xx_dma.c............\...\stm32f4xx_exti.c............\...\stm32f4xx_flash.c............\...\stm32f4xx_fsmc.c............\...\stm32f4xx_gpio.c............\...\stm32f4xx_hash.c............\...\stm32f4xx_hash_md5.c............\...\stm32f4xx_hash_sha1.c............\...\stm32f4xx_i2c.c............\...\stm32f4xx_iwdg.c............\...\stm32f4xx_pwr.c............\...\stm32f4xx_rcc.c............\...\stm32f4xx_rng.c............\...\stm32f4xx_rtc.c............\...\stm32f4xx_sdio.c............\...\stm32f4xx_spi.c............\...\stm32f4xx_syscfg.c............\...\stm32f4xx_tim.c............\...\stm32f4xx_usart.c............\...\stm32f4xx_wwdg.c............\...\USART_Lib.c............\...\main.c............\...\netconf.c............\...\serial_debug.c............\...\stm32f4xx_it.c............\...\system_stm32f4xx.c............\...\tcp_echoserver.c............\startup_stm32f4xx.s............\obj\STM32-RS485.plg............\...\startup_stm32f4xx.d............\...\startup_stm32f4xx.o............\...\usart_lib.crf............\...\main.d............\...\main.crf............\...\main.o............\...\misc.d............\...\misc.crf............\...\misc.o............\...\stm32f4xx_adc.d............\...\stm32f4xx_adc.crf............\...\stm32f4xx_adc.o............\...\stm32f4xx_can.d............\...\stm32f4xx_can.crf............\...\stm32f4xx_can.o............\...\stm32f4xx_crc.d............\...\stm32f4xx_crc.crf............\...\stm32f4xx_crc.o............\...\stm32f4xx_cryp.d............\...\stm32f4xx_cryp.crf............\...\stm32f4xx_cryp.o............\...\stm32f4xx_cryp_aes.d............\...\stm32f4xx_cryp_aes.crf............\...\stm32f4xx_cryp_aes.o............\...\stm32f4xx_cryp_des.d……