vector to const uint16_t * type

Question

I'd like to use libmodbus for my custom project. Everything works fine with predefined static values, but i cannot use modbus_write_registers function with the fourth parameter const uint16_t *'src' predefined dynamically.

In practice I have to convert obtained DB values to a such kind of type, do not know how.

Any hints?

Answer 1

假设您具有std::vector<uint16_t> ，则可以使用std::vector<uint16_t>::data() （在本示例中将返回uint16_t * ）作为指针访问基础内存缓冲区。