Robocon_IPS / Mbed 2 deprecated Nucleo_read_analog_value2

read speed

Dependencies:   TextLCD mbed

Fork of Nucleo_read_analog_value by Robocon_IPS

main.cpp@0:f3b9844205f2, 2017-05-31 (annotated)

Committer:
cc061495
Date:
Wed May 31 12:15:01 2017 +0000
Revision:
0:f3b9844205f2
Child:
1:f54097bcb8a0
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cc061495 0:f3b9844205f2 1 #include "mbed.h"
cc061495 0:f3b9844205f2 2
cc061495 0:f3b9844205f2 3 AnalogIn analog_value(PA_0);
cc061495 0:f3b9844205f2 4
cc061495 0:f3b9844205f2 5 DigitalOut led(LED1);
cc061495 0:f3b9844205f2 6 Serial pc(USBTX,USBRX,115200);
cc061495 0:f3b9844205f2 7 Timer t;
cc061495 0:f3b9844205f2 8
cc061495 0:f3b9844205f2 9 int main() {
cc061495 0:f3b9844205f2 10 pc.format(8,SerialBase::None,1);
cc061495 0:f3b9844205f2 11 float meas;
cc061495 0:f3b9844205f2 12 led = 1;
cc061495 0:f3b9844205f2 13 pc.printf("\nAnalogIn example\n");
cc061495 0:f3b9844205f2 14 float max, min, mean;
cc061495 0:f3b9844205f2 15 max = analog_value.read()*3300;
cc061495 0:f3b9844205f2 16 min = max;
cc061495 0:f3b9844205f2 17
cc061495 0:f3b9844205f2 18
cc061495 0:f3b9844205f2 19 while(1) {
cc061495 0:f3b9844205f2 20 meas = analog_value.read(); // Converts and read the analog input value (value from 0.0 to 1.0)
cc061495 0:f3b9844205f2 21 meas = meas * 3300; // Change the value to be in the 0 to 3300 range
cc061495 0:f3b9844205f2 22 if (meas>max)
cc061495 0:f3b9844205f2 23 max = meas;
cc061495 0:f3b9844205f2 24 if (meas<min)
cc061495 0:f3b9844205f2 25 min = meas;
cc061495 0:f3b9844205f2 26 mean = (max + min)/2;
cc061495 0:f3b9844205f2 27 pc.printf("measure = %.0f mV, mean = %.0f mV\n", meas, mean);
cc061495 0:f3b9844205f2 28 if (meas < mean) { // If the value is greater than 2V then switch the LED on
cc061495 0:f3b9844205f2 29 t.start();
cc061495 0:f3b9844205f2 30 while(analog_value.read()*3300 < mean);
cc061495 0:f3b9844205f2 31 t.stop();
cc061495 0:f3b9844205f2 32 //if(t.read() > 0.00001)
cc061495 0:f3b9844205f2 33 pc.printf("The time taken was %f seconds\n", t.read());
cc061495 0:f3b9844205f2 34 wait(1);
cc061495 0:f3b9844205f2 35 }
cc061495 0:f3b9844205f2 36 t.reset();
cc061495 0:f3b9844205f2 37 }
cc061495 0:f3b9844205f2 38 }