int file; if (file = open("/dev/i2c-0", O_RDWR) < 0) { /* Some kind of error handling */ exit(1); } if (ioctl(file, I2C_FUNCS, &funcs) < 0) { /* Some kind of error handling */ exit(1); } if (!(funcs & I2C_FUNC_SMBUS_QUICK)) { /* Oops, the needed functiona...
#include <linux/i2c-dev.h> #include <fcntl.h> #include <unistd.h> #include <stdio.h> #include <errno.h> int main() { int file = open("/dev/i2c-1", O_RDWR); if (file < 0) { perror("Failed to open the i2c bus"); return 1; } ...
= 0;signed short int x,y,z;//三轴加速度// 1 打开 ,从设备打开fd = open(DEV, O_RDWR)...
问如何通过pci设备中的SMBus/I2C访问EEPROM设备？(LINUX)EN这篇文章介绍了一种基于I2C接口的EEPROM存储器...
1、Linux I2C, SMBus,2013Rev 0.1如风笔记 站在众人的肩上Share what I know with you.2013Linux I2C, SMBus, SPI Drivers 如风(changbin.du)1 Table of Contents1I2C & SMBUS21.1Overview21.2I2C 协议规范31.2.1I2C总线的特征41.2.2寻址方式七位寻址十位寻址51.2.3传输数据61.3代码结构71.4I2C Bus Driver...
file = open("/dev/i2c-0", O_RDWR); if (file < 0) { perror("Failed to open the I2C bus"); return -1; } return 0; } ``` ### 步骤二:设置目标I2C设备的地址 接下来,我们需要设置目标I2C设备的地址,以便向其发送数据。下面是设置目标设备地址的代码示例: `...
问centos7 i2c-dev.h上不存在i2c_smbus_*函数ENNginx是异步框架的网页服务器，也可以用作反向代理、...
("/dev/I2C_TEST_DEVICE",O_RDWR); if(fd < 0) { perror("Open file failed!!!\r\n"); } while(1){ /*for example : write 0x00 0x08*/ /*The val should be 0 when the cmd is read.*/ printf("Enter your cmd:<read/write> <reg_addr> <val> : \n"); scanf("%s",cmd); ...
intfile;if(file = open("/dev/i2c-0", O_RDWR) <0) {/*Some kind of error handling*/exit(1); }if(ioctl(file, I2C_FUNCS, &funcs) <0) {/*Some kind of error handling*/exit(1); }if(!(funcs &I2C_FUNC_SMBUS_QUICK)) {/*Oops, the needed functionality (SMBus write_quick functi...
这款应用名叫BlueMail，是一个电子邮箱应用，这次本来准备接入ChatGPT技术，用于生成邮件回复等，但苹果这...