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总线设备的代码示例: ```c // ...
i2c_data_write_byte ioctl error: I/O error 二、错误原因: 从设备没有正确连接。
The i2c_smbus_write functions seem to not exist on my system. gcc -Wall -fPIC -Ofast -mfpu=vfp -mfloat-abi=hard -march=armv6zk -mtune=arm1176jzf-s -c bcm2835.c bcm2835.c: In function ‘bcm2835_i2c_write’: bcm2835.c:877:12: warning: implic...
Supports most common Cypress and Fujitsu I2C FRAM chips with densities of 4, 16, 64, 128, 256, 512, and 1024 kilobits (kb). Provides simple, easy to use read() and write() methods for reading/writing integral and floating point types (uses automatic type inference and byte conversion),...