Check for bus idle Write high byte of memory address Check for bus idle Write low byte of memory address Check for bus idle Write byte of data Check for bus idle Send stop condition, wait for it to complete Wait for the write cycle to complete (ACK from EEPROM) Example Code (PIC18) ...
常用的串行总线通信方式包括异步串行通信 UART、I2C(Inter IC BUS)、单总线(One WIRE BUS)以及 SPI 总线 2023-07-27 16:51:32 基于延时比较的模拟I2C总线多主通信方法设计 I2C总线(Inter IC BUS)是PHILIPS公司推出的双向两线串行通信标准。由于它具有接口少、通信效率高等优点,现已得到广泛的应用]。它除了可以...
i2c_reset_bus(active_i2cx);break;}}static void i2c_er_handler(void){uint32_t event = I2C_...
msg[1].buf = data;if(rt_i2c_transfer(i2c_bus, msg,2) ==2) {returnRT_EOK; }else{LOG_E("i2c bus read failed! ");return-RT_ERROR; } }staticrt_err_tbmp180_write_regs(rt_sensor_tpsensor,rt_uint8_treg,rt_uint8_t*data,rt_uint8_tdata_size){structrt_i2c_msgmsg[2];structbmp...
https://aticleworld.com/i2c-bus-protocol-and-interface/ PIC32 Family Reference Manual(Section 24. Inter-Integrated Circuit (I2 C)) https://ww1.microchip.com/downloads/en/DeviceDoc/60001116G.pdf https://prodigytechno.com/i2c-bus/ https://home.csulb.edu/~hill/ee346/Lectures/20%20C++%20...
;WaitFlag();WaitForACK();// ResetVariables_I2C();//Set stop condition and give I2C bus free...
I hooked up a logic analyzer on SCL and SDA lines and no packets are decoded though there are some signals going high/low. I'm thinking it sees garbage because the logic analyzer decodes fine if I swap the PIC16F back on the breadboard. ...
The I2C nowadays is become a popular choice of the embedded system interface because of its main advantages of using 2 wire bus interface. On this tutorial you’ve learned to utilize the Microchip PIC18F14K22 microcontroller MSSP in I2C master mode to control various I2C devices simultaneously. ...
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一、I2C总线型 I2C总线,是INTER INTEGRATED CIRCUIT BUS的缩写,I2C总线采用时钟(SCL)和数据(SDA)两根线进行数据传输,接口十分简单。Microchip公司的24XX系列串行E2PROM存储 2、容量从128位(168)至256k位(32k8),采用I2C总线结构。24XX中,XX为电源电压范围。 1 引脚SDA是串行数据脚。该脚为双向脚,漏极开路,用于...