读写T5557卡源码。曼彻斯特解码。串口发送卡号。(Read and write T5557 card source. Manchester decode. The serial port sends the card number.)

stm32主控芯片实现对T5557卡的读写，资料包括读卡电路，T5557卡片的相关技术文档，上位机及工程源码。(The main control chip of STM32 realizes the reading and writing of T5557 card, including the reading circuit, the related technical documents of T5557 card, the host computer and the engineering