david lukofsky / Mbed 2 deprecated STM32_read_analog

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Dependencies:   mbed

main.cpp@0:15495bc2362a, 2018-11-13 (annotated)

Committer:
lukofsky
Date:
Tue Nov 13 01:28:09 2018 +0000
Revision:
0:15495bc2362a
Child:
1:df1ae6d3fd03
j

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lukofsky 0:15495bc2362a 1 #include "mbed.h"
lukofsky 0:15495bc2362a 2
lukofsky 0:15495bc2362a 3 AnalogIn analog_value(A0);
lukofsky 0:15495bc2362a 4
lukofsky 0:15495bc2362a 5 DigitalOut led(LED1);
lukofsky 0:15495bc2362a 6
lukofsky 0:15495bc2362a 7 int main()
lukofsky 0:15495bc2362a 8 {
lukofsky 0:15495bc2362a 9 float meas_r;
lukofsky 0:15495bc2362a 10 float meas_v;
lukofsky 0:15495bc2362a 11
lukofsky 0:15495bc2362a 12 printf("\nAnalogIn example\n");
lukofsky 0:15495bc2362a 13
lukofsky 0:15495bc2362a 14 while(1) {
lukofsky 0:15495bc2362a 15
lukofsky 0:15495bc2362a 16 meas_r = analog_value.read(); // Read the analog input value (value from 0.0 to 1.0 = full ADC conversion range)
lukofsky 0:15495bc2362a 17 meas_v = meas_r * 3300; // Converts value in the 0V-3.3V range
lukofsky 0:15495bc2362a 18
lukofsky 0:15495bc2362a 19 // Display values
lukofsky 0:15495bc2362a 20 printf("measure = %f = %.0f mV\n", meas_r, meas_v);
lukofsky 0:15495bc2362a 21
lukofsky 0:15495bc2362a 22 // LED is ON is the value is below 1V
lukofsky 0:15495bc2362a 23 if (meas_v < 1000) {
lukofsky 0:15495bc2362a 24 led = 1; // LED ON
lukofsky 0:15495bc2362a 25 } else {
lukofsky 0:15495bc2362a 26 led = 0; // LED OFF
lukofsky 0:15495bc2362a 27 }
lukofsky 0:15495bc2362a 28
lukofsky 0:15495bc2362a 29 wait(1.0); // 1 second
lukofsky 0:15495bc2362a 30 }
lukofsky 0:15495bc2362a 31 }