There is still a long way to go to achieve a unified and operable industrial Ethernet.From the above discussion, it is not difficult to see that large automation system companies use industrial Ethern
Why does LCD1602 need to write instructions first and then write data? What is the difference between the two?
There are relevant codes
void write_com(uchar com) { lcdrs=0; P0=com; delay(5); lcden=1;