Keyestudio ARDUINO maker learning kit, Manual

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123
Sample code A:
//////////////////////////////////////////////////////////
int DI = 12;
int RW = 11;
int DB[] = {3, 4, 5, 6, 7, 8, 9, 10};// use array to select pin for bus
int Enable = 2;
void LcdCommandWrite(int value) {
// define all pins
int i = 0;
for (i=DB[0]; i <= DI; i++) // assign value for bus
{
digitalWrite(i,value & 01);// for 1602 LCD, it uses D7-D0( not D0-D7) for signal identification;
here, it’s used for signal inversion.
value >>= 1;
}
digitalWrite(Enable,LOW);
delayMicroseconds(1);
digitalWrite(Enable,HIGH);
delayMicroseconds(1); // wait for 1ms
digitalWrite(Enable,LOW);
delayMicroseconds(1); // wait for 1ms
}