pietest

spi总线SD卡驱动，stm32芯片用，够20字节了吧(Spi bus SD card driver, stm32 chip, enough 20 bytes.)

详细介绍了BLDC的六步控制算法以及矢量控制算法的实现方式。(The control algorithm of BLDC is introduced)

能由光谱数据精确的计算，得出色坐标的参数。(Excellent coordinates from spectral data)

说明：  采样返回上位机，上位机处理后串口发送至单片机，实现pid调节，需配合simulink使用(Sampling is returned to the upper computer. After processing, the upper computer sends the serial port to the single chip computer to realize PID regulation. It needs to be used with simulink.)

C和C++程序员面试秘笈，解析C/C++面试题的书，可以帮助求职者更好地准备面试(C and C++ programmer interview tips, analytical C/C++ face questions of the book, can help candidates better prepare for interview)

说明：  tc234 demo with mvb c programs

【2006年NOIP普及组第二题】开心的金明(2006 NOIP 2)

说明：  模拟串口程序 占用T0 或者T2 波特率9600 起始位 1位(Analog serial port program uses T0 or T2 baud rate 9600 start bit 1 bit)

Fast implementation of solutions to the min-num and min-e problems of digital curve approximation.

stm32f103 dac和adc 以dma方式实现语音对讲，采用8000Hz,12bit格式。(STM32F103 DAC and ADC realize voice intercom in DMA mode, using 8000Hz and 12bit format.)