I2C_InitStruct.I2C_Timing = 0x00210507;换成这个SC12A还是有点不太会，主要是时间寄存器的值，如下...
sDRV_BMP280_USE_MAX_RESOLUTION//气压过采样:x16,温度过采样:x2,IIR滤波:16,Timing:0.5ms,Mode:Normaluint8_tconf_seq[]={BMP280_REG_CTRL_MEAS,0x57,BMP280_REG_CONFIG,0x14};HAL_I2C_Master_Transmit_IT(&hi2c1,BMP280_ADDR,conf_seq,4);Delay_ms(5);#endif// sHMI_Debug_Printf("calibration ...
必须配置好时序后才可以使用I2C,后面我们讲解改寄存器的时候会分析配置方法,因为配置的过程繁琐,之前ST官方提供的I2C Timing Configuration Tool工具对I2C时钟频率有限制,对于不大于72MHz的I2C时钟频率才可以通过该工具进行配置,这里我们可以直接使用STM32CubeMX来配置,如下图,Timing参数的值就是最终要写入TIMINGR 寄存器...
deviceAddrLen, SI2C_WRITE))return0;if(!SoftI2C1_SendByte_ACK(memAddr, SI2C_ACK))return0;// SoftI2C1_Stop(); // A STOP signal is required on some devices.SoftI2C1_Start();if(!SoftI2C1
具体是指 I2C_TIMINGR 寄存器中的 PRESC[3:0]、 SCLDEL[3:0] 和 SDADEL[3:0] 位。STM32CubeMX工具在I2C配置窗口中可以计算I2C_TIMINGR寄存器的值。例如我们要产生标准的100KHz的I2C主设备时序,如图 配置I2C时钟来源 配置I2C时钟来源,选择I2C的时钟来源,见序号2的方框。 然后切换至方框1的界面,选择方框2...
当I2C主机每发送完一个字节数据后,就在时钟脉冲9期间释放数据线,此时SDA 设置为输入状态,等待I2C从机应答,也就是等到I2C从机告诉主机它接收到数据了,应答信号是由从机发出的,主机需要提供应答信号所需的时钟,主机发送完 8 位数据以后紧跟着的一个时钟信号就是给应答信号使用的,从机通过将 SDA 拉低来表示发出应...
基于STM32F103的I2C总线EEPROM的读写(带超时检测) 热度: STM32F0—比较器 热度: 相关推荐 January2013DocID024161Rev11/18 AN4235 Applicationnote I2Ctimingconfigurationtool forSTM32F3xxxxandSTM32F0xxxxmicrocontrollers Introduction ThisapplicationnotepresentstheI2CtimingconfigurationtoolfortheSTM32F3xxxxand STM32...
presents the I2C timing configuration tool for the STM32F3xxxx and STM32F0xxxx microcontroller families.The STM32F0xxxx and STM32F3xxxx devices embed a high-speed Inter Circuit Communication peripheral (I2C) supporting standard mode (100 KHz), fast mode (400 KHz) and fast mode plus (1 MHz)...
presents the I2C timing configuration tool for the STM32F3xxxx and STM32F0xxxx microcontroller families.The STM32F0xxxx and STM32F3xxxx devices embed a high-speed Inter Circuit Communication peripheral (I2C) supporting standard mode (100 KHz), fast mode (400 KHz) and fast mode plus (1 MHz)...
“I2C_Timing_Config_Tool_Vx.y.z.xls” file which can be downloaded from .st. For Vx.y.z, please refer to the tool version, for example: V1.0.0. Before using the clock tool, it is essential to read the STM32 microcontroller reference ...