Frecuencymeter digital, clk frequency 10 MHZ, exhibition in 7 segments

SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限，将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适的卡体，不管是什么卡，都会使该位被设置； SD_CARD_WRITE_PROTECT 当卡体的写保护开关被 LOCK 时，则该位被设置； SD_CARD_READY 当卡槽内的卡被正确识别，并可以随时访问时，则该位被设置； SD_CARD_DOOR_CLOSE 当卡槽的门（产品外壳上的挡板开关）关闭时，则该位被设置； SD_CARD_IS_SD 当卡槽内插入的是 SD 卡时，则该位被设置。 SD_CARD_IS_MMC 当卡槽内插入的是 MMC 卡时，则该位被设置； 注意：不要使用 0x80，免得和整数作逻辑运算时被误为负数。-err

环境是IAR,本实例应用于大棚或是其他需要温度控制的场合，可以供大家参考一下。-Environment is the IAR, the examples used in greenhouses or other occasions the need for temperature control, you can refer to for everyone.

内容： *红外测试程序，用单片机通过发射管发射38K的调制频率码，由一体化接收并解码由发光管显示。 *正常情况下，由于反射和高灵敏度接收，LED4（P1.3)一直闪烁，可以用黑色纸片完全遮挡接收头使 *之不能接收到发射管的信号，这是LED4熄灭。说明功能性正常 -Content:* IR test program, launched with the microcontroller through the launch tube of the modulation frequency of 38K code, by the integration to receive and decode from the LED display.* Under normal circumstances, due to reflection and high-sensitivity receiver, LED4 (P1.3) has been flickering, you can completely block the black pieces of paper to make* that they are not receiving the first emission control signal is received, it is LED4 out. Note the normal functional

多路数据采集 +lcd +菜单功能显示 max485通信-Multi-channel Data Acquisition+ Lcd+ Menu features show MAX485 communication

I2C的程序 数据传送 非常详细的注释 C语言的 其他的就不用多说了吧-I2C data transmission procedures very detailed notes of the C language other on the right to say the least

LPC2119的CAN驱动程序,开发环境问ads1.2-LPC2119

步进电机的c程序例子,基于单片机的一个例子.-Stepper motor c program examples, an example based on single chip.

LT_1B msp430开发板例子程序－UART_U96-LT_1B msp430开发板例子程序－UART_U9600

6-leddisplay.rar

使用ATMEGA8L单片机做的两线串行接口TWI的功能，即I2C的功能！-Singlechip ATMEGA8L make use of two-wire serial interface TWI function, that is, the functions of I2C!