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 hos