当总线上连接多个I2C器件时,需要对器件进行寻址。器件地址如下表所示,其中E2,E1,E0是指三个引脚的状态,取决于是接地还是接高电平,R/W为1则为读操作,为0则为写操作。A8,A9,A10,A16指的是所要操作的字节地址的高位,后面会提到。 芯片bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 24C01/02 1 0 1 0 E...
The DS1307+ is a 64 x 8, serial, I2C real-time clock (RTC) in 8 pin PDIP package. The serial RTC is a low power, full binary-coded decimal (BCD) clock/calendar plus 56bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus. The clock...
The Pi RTC is based on the clock chip DS1307, it can provide a real-time clock(RTC) for raspberry pi via the I2C interface. Real-time clock of this module counts seconds,minutes, hours, date of the month,month, day of the week, and year with leap-year compensation valid up to 2100...
3.3v供电可能导致ds1307不工作读取数据：读取数据前一定要写入0x00，将进行寄存器指针归0读取datasheet要...
DS1307_set_mode(); while(true) { } } From the Datasheet: Depending upon the state of the R/W bit, two types of data transfer are possible: Data transfer from a master transmitter to a slave receiver. The first byte transmitted by the master is the slave address. Next follows a numb...
Datasheet:DS1307 In this blog post I will use a module similar to the one in the picute. You can buy the device onAliExpressor eBay for a few cents. The driver This driver allows you to: Read and set date and time in 12-hour and 24-hour format. See:get_datetime ...
DS1302,SD2501A,SD2523API,SD2501B,SD2501C,SD2078,SD2501D,RX-8025T,SD2202A,SD2202B,DS1307,8010,SD8573,SD2400EP,SD2203AP,SD2204FLP,SD8578,SD2202F,SD2202C,SD2202D,SD2077,SD2501F,SD2401ELP,SD5016A,SD2505,SD2506,SD2507,SD2508,SD2505API,SD2069,SD2068,SD8208,SD8568,SD2500,SD25XX...
Breaks out DS1307 clock pin to offer clock signals for the microcontroller. Can be cascaded to other I2C devices. Hardware connection Download Datasheet for AT24C32 Datasheet for DS1307 Datasheet for IIC EEPROM AND RTC MODULE Schematic
A9 (any pin)DS A8 (I2C3 SCL)SCL C9 (I2C3 SDA)SDA 3V3VCC GNDGND micropython.org Binary-coded decimal DS1307 datasheet AT24C32 datasheet License Licensed under theMIT License. Releases No releases published Packages No packages published...
比如对于 DS1307 芯片:CONFIG_RTC_DRV_DS1307=y. 此外,也可以开启 CONFIG_I2C_DEBUG_* 配置,使内核日志显示更多 I2C 信息,便于后续调试。 第二步:查阅 SoC 的 datasheet,确保 /dev/i2c-* 总线数量不少于 SoC 支持的 I2C(TWI)总线数量,而且存在未被使用的I2C 总线 ...