MAX7219和PS721 9分别由美国MAXIM 能上，PS721 9 可以完全兼容公司和武汉力源公司设计生产，它们均采用流行的同步串行外设接口(SPI)，可以与任何一种单片机方便接口 -MAX7219 and PS721 9 by MAXIM to the United States, PS721 9 can be completely compatible with the company and Wuhan Liyuan design and production company,

stm32下使用max7219驱动点阵,使用spi总线来没驱动，最后下载验证，结果很稳定。-Under the stm32 use max7219 driver lattice, the use of spi bus to not drive, download the verification, the result is stable.