SERIAL PRINT ARDUINO BLOCKING SERIAL
SERIAL PRINT ARDUINO BLOCKING CODE

The Arduino API should automatically flush the output buffer when it gets filled. Additionally, why are the global variables no longer being updated if functioning correctly?

What's interesting is that the print behavior seems to work fine up until the very last few lines which is where the main loop stalls.

SERIAL PRINT ARDUINO BLOCKING SERIAL

If I disable all ISR's manually by commenting out their definitions, then print the same information, it prints things to the console almost instantaneously, which is indicating that the ISR's are in fact- being re-enabled and triggered intermediately between the various Serial print calls. And yet- it takes a good 10 seconds or so to print out all of my statistics with a max baud rate (115200). If this were the case, it would not take very long to print a series of strings when the interrupts are disabled. perhaps the print statements occur first and the ISR does not have a chance to read the sensor value beforehand. This may explain why the ADC is not updating it's values. I've done some research on this topic and it seems as though the print() and println() functions from the Serial are supposed to block Interrupts by temporarily disabling them. However, when I try printing more statistics over the Serial which are longer in size, it appears to stop reading the values from the ADC and completely hang the program toward the end of the buffer. LineVoltage(lineVoltage), r2(R2), beta(beta), nominalTemperature(nominalTemperature) Īll seems well at first I can print the global values without a problem in the main loop and I see that they are being read and written correctly over the Serial monitor. Int beta = 3950, int nominalTemperature = 25) :ĪdcValue(analogRead), logicalPinAddress(pinAddress), nominalResistance(nominalResistance), Thermistor class methods only perform reads and DO NOT WRITE!!!) Thermistor(unsigned int *analogRead, int pinAddress, long int nominalResistance, float R2, float lineVoltage, Thermistor.h (Constructor, notice how the read value is passed by reference to the instantiated object. Globals.h extern volatile unsigned int PIN_A0_READ Įxtern volatile unsigned int PIN_A1_READ Įxtern volatile unsigned int PIN_A2_READ Įxtern volatile unsigned int PIN_A3_READ Įxtern volatile unsigned int PIN_A4_READ Įxtern volatile unsigned int PIN_A5_READ The interrupt routines run fine in my testing and perform read values from pins A0-A5, which will be stored into global variables (declared as volatile) which will be accessed later in the program. As of right now, the Output Compare Registers are set to a static value (max 255) with the pre-scaler set as the clock speed.

SERIAL PRINT ARDUINO BLOCKING CODE

I have code that has enabled all 3 timers on the arduino (0, 1, and 2) for Fast 8-bit PWM mode.

Serial print arduino blocking