Keyestudio Ks0428 Manual page 190

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delayMicroseconds(3);
}
// transmit data
void IIC_send(unsigned char send_data)
{
for(char i = 0;i < 8;i++) //Each byte has 8 bits
{
digitalWrite(SCL_Pin,LOW);
to change the signals of SDA
delayMicroseconds(3);
if(send_data & 0x01)
according to 1 or 0 of every bit
{
digitalWrite(SDA_Pin,HIGH);
}
else
{
digitalWrite(SDA_Pin,LOW);
}
delayMicroseconds(3);
digitalWrite(SCL_Pin,HIGH); //pull up clock pin SCL_Pin to
stop transmitting data
//pull down clock pin SCL Pin
//set high and low level of SDA_Pin
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