sdio规范文档，详细描述了sdio所有命令-SDIO Simplified Specification

It s useful to write systems in matrix form. While we looked at several examples, including the general form of a system of linear equations, it s useful just to look at a simple, special case. The system

SPI lib for atmega168. DON USE Wrk? UNOS void spi_init(void) { /* Set MOSI and SCK output */ DDR_SPI |= _BV(DD_MOSI) | _BV(DD_SCK) DDR_SPI &= ~_BV(DD_MISO) /* Enable SPI, Master, set clock rate fck/128 */ SPCR = _BV(SPE) | _B

步进电机控制模块主要包括步进电机调速控制，该模块实现步进电机可由外置拨码开关来控制电机转速。-Stepper motor control module comprises a stepper motor speed control, the stepper motor module by external DIP switches to control the motor spe