Connecting Two Gravity DACs to an Arduino Zero problem
Ferg.Colto 2024-08-05 09:46:41 164 Views2 Replies Hello!
I'm trying to connect two Gravity DAC 0-10V modules to an MKR Zero board.
On the Gravity boards, i have one address set to 0x58 and one set to 0x5F - So the pins are 000 and 111 respectively.
The two boards kind of work, sometimes. In testing I found that each individual board would work well when tested on its own - the output voltages were stable and accurate.
When i connect both boards, things go quite wrong. The code will upload, but then the Arduino will give Initialize Errors for the Gravity boards.
If i plug out the Arduino USB, and back in it will work, but the voltages are now higher than i requested. Sometimes the Arduino USB wont connect - Windows says there is a USB not recognised error.
Is this a power supply issue, or does anyone know how to solve this?
thank you!
Make sure you have the correct drivers installed for the MKR Zero. Reinstalling the drivers might help with the USB connection issue.
lia.ifat for reference, here is my code :
#include "DFRobot_GP8403.h"
DFRobot_GP8403 dac(&Wire,0x58);
DFRobot_GP8403 dac2(&Wire,0x5F);
int StateMachine = 0;
// Interrupt Service Routine (ISR)
void changeState ()
{
StateMachine++;
if(StateMachine>4)
{
StateMachine=9;
}
Serial.print("Machine State = ");
Serial.println(StateMachine);
}
void resetState ()
{
Serial.println("reset");
StateMachine=0;
}
void setup() {
Serial.begin(115200);
while(dac.begin()!=0){
Serial.println("init error 1");
delay(500);
}
while(dac2.begin()!=0){
Serial.println("init error 2");
delay(500);
}
Serial.println("init succeed");
dac.setDACOutRange(dac.eOutputRange10V);//Set the output range as 0-10V
dac2.setDACOutRange(dac2.eOutputRange10V);//Set the output range as 0-10V
attachInterrupt(digitalPinToInterrupt(5), changeState, RISING);
attachInterrupt(digitalPinToInterrupt(4), resetState, RISING);
}
void loop(){
switch (StateMachine) {
case 1:
dac.setDACOutVoltage(2000,0); // OUT0 channel 1
dac.setDACOutVoltage(2000,1); // OUT1 channel 1
dac2.setDACOutVoltage(2000,0); // OUT0 channel 2
break;
case 2:
dac.setDACOutVoltage(4000,0); // OUT0 channel 1
dac.setDACOutVoltage(4000,1); // OUT1 channel 1
dac2.setDACOutVoltage(4000,0); // OUT0 channel 2
break;
default:
dac.setDACOutVoltage(0,0); // OUT0 channel 1
dac.setDACOutVoltage(0,1); // OUT1 channel 1
dac2.setDACOutVoltage(0,0); // OUT0 channel 2
break;
}
dac.store();
dac2.store();
}
Ferg.Colto 