i2c_smbus_read_byte_data函数是用于从I2C从设备读取单个字节数据的函数。以下是针对你问题的详细解答: i2c_smbus_read_byte_data函数的作用: 该函数用于从指定的I2C从设备中读取一个字节的数据。它通常用于读取I2C设备上的特定寄存器值。 i2c_smbus_read_byte_data函数的返回值类型: 函数的返回类型是s32,即...
// 写入数据到I2C设备 int write_data_to_device() { if (i2c_smbus_write_byte_data(file, reg, data) < 0) { perror("Failed to write data to device"); return -1; } return 0; } ``` ### 步骤四:关闭I2C总线设备 最后,我们在完成I2C通信后,需要关闭I2C总线设备。下面是关闭I2C总线设备的...
第二个参数是要读取的数据块的起始的寄存器的地址，也就是通过I2C总线从0x00寄存器开始连续读sizeof(struct xydata_t)个数据到y_data中。
I2C and SMBus 2-wire buses use simple open-drain pull-down drivers with resistive or current source pull‑ups. Communications protocols in these systems allow multiple devices to drive and monitor the bus without bus contention, creating a robust communications link. Unfortunately, as systems...
我们用Android Studio新建native的demo应用中，一般C++的代码如下，这是一个典型的静态注册JNI的例子，调用...
(KERN_INFO "recv data = %x.%x\n",recv_msg[0],recv_msg[1]); /*i2c写byte,通过这个函数可以往设备中指定地址写数据*/ if(i2c_smbus_write_byte_data(downey_client,reg,recv_msg[1]) < 0){ printk(KERN_ALERT " write failed!!!\n"); return -EIO; } return len; } static int i2c_...
遇到一个问题就是，由于我在CentOS7服务器上用的是普通用户账号，一些第三方库比如Boost库、yaml-cpp、...
Increase I2C or SMBus Data Rate and Reduce Power Consumption with Low Power Bus Acceleratorcomparators incorporate anti-glitch circuitry. Any transient at the input of the monitor comparator must be of sufficient magnitude and duration (energy) to switch the comparator. De‑ signs utilizing ...
I tried to raspberry this, and i went to ArduCAM/examples/RaspberryPi and typed make g++ -std=c++0x -I./ -I../../../ArduCAM -c arducam_arch_raspberrypi.c arducam_arch_raspberrypi.c: In function ‘uint8_t arducam_i2c_word_write(uint16_t, u...
•TMP75：8个地址，NIST可追溯 •数字输出：与SMBus™、两线制和I2C接口兼容 •分辨率：9至12...