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Found 4 results

  1. I am trying to find the timing of how long it takes for an analogread operation like below. How do I do that in energia? Is there a way I can timestamp before and after the code and take the difference? voltSensor= analogRead(A7);
  2. A decoder from a motor has 2 square wave outputs that deliver 256 pulses/revolution (duty cycle 1:1). The two outputs are 90 degree out of phase for direction information. I want to count pulse, in one direction up, in the other down. Towards this aim I attach to the first decoder output following routine: void countStep(){ if(digitalRead(_CIN2)){_pos++;} else {_pos--;} } "_CIN2" is the second decoder output and "pos" the counter variable. This works well until up to approx. 16kHz. But for higher frequencies it counts in the wrong direction. I first guessed, that the phase r
  3. If I try to read the "micros()" function, I only get multiples of 512. I run a MSP430G2553 that, according to specs, should run with 16MHz. here is a minimalistic code: void setup() { Serial.begin(9600); } void loop() { Serial.println(micros()); } Any ideas why I can not get higher resolution than 512 uSec? cheers, Daniel
  4. Hi, I am trying to get the ADC sample timestamp on Energia, but I can not figure it out how it works. From the TI API I know that the ADC data saved on the register is made by two parts. bits [13:0] : ADC sample bits [31:14]: time stamp per ADC sample So I took the Energia library. From <driverlib/adc.h> and I found a method that returns only the time stamp. //***************************************************************************** // //! Gets the current value of ADC internal timer //! //! \param ulBase is the base address of the ADC //! //! This function the c
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