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Post by pedrosilva on Jul 3, 2018 17:00:42 GMT
Hi,
When I was testing I2C communication when I was uploading it failed and now the reset led is blinking and I can't upload more.
Greatings.
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Post by pedrosilva on Jul 3, 2018 17:09:47 GMT
Hi,
I don't know what happened but I connect the usb to another port and now it is functioning normal again.
Greatings
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Post by pedrosilva on Jul 4, 2018 9:26:48 GMT
Hi,
The reset led comeback when testing I2C communication, and now it dont turn off and I can't upload.
Any explanation for this and any solution?
Greatings
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Post by Admin on Jul 4, 2018 9:30:09 GMT
Are you using the USB to power the ShieldBuddy or the 9V power jack socket? If you have added a shield that draws too much current and you are using USB power, the red LED can come on or flash. Also if you are using USB power and you have a very cheap USB cable, these sometimes cannot pass enough current to run the ShieldBuddy.
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Post by pedrosilva on Jul 4, 2018 9:38:07 GMT
I am using USB. I try with a USB hub but nothing change.
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Post by pedrosilva on Jul 4, 2018 9:43:36 GMT
Should I try with the 9V? I have to switch jumper for that right?
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Post by Admin on Jul 4, 2018 10:03:07 GMT
Yes!
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Post by pedrosilva on Jul 4, 2018 11:02:20 GMT
Thank you for the fast help.
With 9v it is working normally, but when I connect the power via USB it randomly resets every once in a while.
Greetings.
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Post by Admin on Jul 4, 2018 12:05:07 GMT
If this happens it usually means that the USB power supply is not adequate or that the USB cable cannot pass enough current. If you have a shield that is powered off the ShieldBuddy then this can be a problem.
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Post by pedrosilva on Jul 4, 2018 15:15:00 GMT
Hi,
When I'm testing the I2C communication with this for
for (address = 1; address <= 127; address++)
{
// The i2c_scanner uses the return value of
// Wire.endTransmission to see if
// a device acknowledged the address.
Wire.beginTransmission(address);
state = Wire.endTransmission();
SerialASC.print(state);
}
the current consumed reaches 1A and I do not know if I should increase the current consumption limit of the power source.
Is such a high current normal by sending I2c commands? What is the maximum current used by shieldbuddy?
Best Regards.
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Post by Admin on Jul 4, 2018 15:18:13 GMT
1A seems very high. What are you sending commands to? Is it powered off the ShieldBuddy's 5V?
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Post by pedrosilva on Jul 4, 2018 15:23:26 GMT
I have ShieldBuddy with 7V in a a power supply with a current limit of 1A, and the USB connected to load the program when I change it. I do not have any other device connected to shielbuddy.
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Post by pedrosilva on Jul 4, 2018 15:25:06 GMT
Whit this program in the manual: /* Allow use of VT100 escape sequences */ #include "vt100.h" #include <arduino.h> void Core0IntService(void) { SerialASC.print("\n\rHello from Core "); SerialASC.print(GetCpuCoreID()); } void Core1IntService(void) { SerialASC.print("\n\rHello from Core "); SerialASC.print(GetCpuCoreID()); } void Core2IntService(void) { SerialASC.print("\n\rHello from Core "); SerialASC.print(GetCpuCoreID()); } void setup() { // put your setup code here, to run once: SerialASC.begin(9600); CreateCore0Interrupt(Core0IntService); CreateCore1Interrupt(Core1IntService); CreateCore2Interrupt(Core2IntService); } void loop() { /* // put your main code here, to run repeatedly: InterruptCore0(); delay(500); InterruptCore1(); delay(500); InterruptCore2(); delay(500); */ } void setup1() { } void loop1() { } void setup2() { } void loop2() { } The consuption is 0.5 A. |
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Post by pedrosilva on Jul 5, 2018 8:37:34 GMT
Now if I power with the USB reset light is ON and if I power with the 7V power jack socket the ShieldBuddy don't start and consume 1A.
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Post by Admin on Jul 5, 2018 9:02:36 GMT
Using the external 7V power, does the red LED illuminate?
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