Justin Jordan / Mbed OS SerialPlotter_Test

Simple demo for SerialPlotter program found at following link https://developer.mbed.org/users/borislav/notebook/serial-port-plotter/

main.cpp@2:7a66c77ff328, 2017-09-07 (annotated)

Committer:
j3
Date:
Thu Sep 07 23:37:31 2017 +0000
Revision:
2:7a66c77ff328
Parent:
1:0951a80a60e2 
added notes on fixing negative  val plotting for GUI

Who changed what in which revision?

UserRevisionLine numberNew contents of line
j3 1:0951a80a60e2 1 /******************************************************************************
j3 1:0951a80a60e2 2 * MIT License
j3 0:cdcbb66ba497 3 *
j3 1:0951a80a60e2 4 * Copyright (c) 2017 Justin J. Jordan
j3 0:cdcbb66ba497 5 *
j3 1:0951a80a60e2 6 * Permission is hereby granted, free of charge, to any person obtaining a copy
j3 1:0951a80a60e2 7 * of this software and associated documentation files (the "Software"), to deal
j3 1:0951a80a60e2 8 * in the Software without restriction, including without limitation the rights
j3 1:0951a80a60e2 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
j3 1:0951a80a60e2 10 * copies of the Software, and to permit persons to whom the Software is
j3 1:0951a80a60e2 11 * furnished to do so, subject to the following conditions:
j3 1:0951a80a60e2 12
j3 1:0951a80a60e2 13 * The above copyright notice and this permission notice shall be included in all
j3 1:0951a80a60e2 14 * copies or substantial portions of the Software.
j3 1:0951a80a60e2 15
j3 1:0951a80a60e2 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
j3 1:0951a80a60e2 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
j3 1:0951a80a60e2 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
j3 1:0951a80a60e2 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
j3 1:0951a80a60e2 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
j3 1:0951a80a60e2 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
j3 1:0951a80a60e2 22 * SOFTWARE.
j3 1:0951a80a60e2 23 ******************************************************************************/
j3 0:cdcbb66ba497 24
j3 0:cdcbb66ba497 25
j3 0:cdcbb66ba497 26 //https://developer.mbed.org/users/borislav/notebook/serial-port-plotter/
j3 0:cdcbb66ba497 27
j3 1:0951a80a60e2 28
j3 0:cdcbb66ba497 29 #include "mbed.h"
j3 0:cdcbb66ba497 30
j3 0:cdcbb66ba497 31 int32_t float_to_int(float f);
j3 0:cdcbb66ba497 32
j3 0:cdcbb66ba497 33
j3 0:cdcbb66ba497 34 int main()
j3 0:cdcbb66ba497 35 {
j3 0:cdcbb66ba497 36 DigitalOut rLed(LED_RED, 1);
j3 0:cdcbb66ba497 37 DigitalOut gLed(LED_GREEN, 1);
j3 0:cdcbb66ba497 38 DigitalOut bLed(LED_BLUE, 1);
j3 0:cdcbb66ba497 39
j3 0:cdcbb66ba497 40 DigitalOut leds[] = {rLed, gLed, bLed};
j3 0:cdcbb66ba497 41
j3 0:cdcbb66ba497 42 Serial debug(USBTX, USBRX);
j3 0:cdcbb66ba497 43 debug.baud(115200);
j3 0:cdcbb66ba497 44
j3 0:cdcbb66ba497 45 //const float PI = 3.14159265F;
j3 0:cdcbb66ba497 46 float angle[] = {0.0F, 120.0F, 240.0F};
j3 0:cdcbb66ba497 47 float sinScaled;
j3 0:cdcbb66ba497 48 int32_t data[3];
j3 0:cdcbb66ba497 49 uint32_t cnt = 0;
j3 0:cdcbb66ba497 50
j3 0:cdcbb66ba497 51 while(1)
j3 0:cdcbb66ba497 52 {
j3 0:cdcbb66ba497 53 //get data
j3 0:cdcbb66ba497 54 for(uint32_t idx = 0; idx < 3; idx++)
j3 0:cdcbb66ba497 55 {
j3 2:7a66c77ff328 56 /*If you have Qt creator installed, you can open the SerialPlotter
j3 2:7a66c77ff328 57 project and edit line 440 of mainwindow.cpp too the following
j3 2:7a66c77ff328 58
j3 2:7a66c77ff328 59 //else if(isdigit(temp[i]) || isspace(temp[i]) || temp[i] == '-')
j3 2:7a66c77ff328 60
j3 2:7a66c77ff328 61 without the comment, of course.
j3 2:7a66c77ff328 62
j3 2:7a66c77ff328 63 If you dont, use the commented out version of sinScaled below and
j3 2:7a66c77ff328 64 comment the first one out.
j3 2:7a66c77ff328 65 */
j3 2:7a66c77ff328 66
j3 2:7a66c77ff328 67 //get sin, scaled up
j3 2:7a66c77ff328 68 sinScaled = (100.0F * sin(angle[idx]*(PI/180.0F)));
j3 2:7a66c77ff328 69
j3 2:7a66c77ff328 70 //sinScaled = (100 + (100.0F * sin(angle[idx]*(PI/180.0F))));
j3 2:7a66c77ff328 71
j3 0:cdcbb66ba497 72 data[idx] = float_to_int(sinScaled);
j3 0:cdcbb66ba497 73
j3 0:cdcbb66ba497 74 //inc angle, check for roll over
j3 0:cdcbb66ba497 75 angle[idx] += 1.0F;
j3 0:cdcbb66ba497 76 if(angle[idx] > 360.0F)
j3 0:cdcbb66ba497 77 {
j3 0:cdcbb66ba497 78 angle[idx] = 0.0F;
j3 0:cdcbb66ba497 79 }
j3 0:cdcbb66ba497 80 }
j3 0:cdcbb66ba497 81
j3 0:cdcbb66ba497 82 //plot
j3 0:cdcbb66ba497 83 debug.printf("$%d %d %d;", data[0], data[1], data[2]);
j3 0:cdcbb66ba497 84
j3 0:cdcbb66ba497 85 //blink some lights, just cause you have to
j3 0:cdcbb66ba497 86 leds[cnt % 3] = !leds[cnt % 3];
j3 0:cdcbb66ba497 87 cnt++;
j3 0:cdcbb66ba497 88
j3 0:cdcbb66ba497 89 //wait a bit
j3 0:cdcbb66ba497 90 wait(0.01F);
j3 0:cdcbb66ba497 91 }
j3 0:cdcbb66ba497 92 }
j3 0:cdcbb66ba497 93
j3 0:cdcbb66ba497 94
j3 0:cdcbb66ba497 95 int32_t float_to_int(float f)
j3 0:cdcbb66ba497 96 {
j3 0:cdcbb66ba497 97 int32_t i;
j3 0:cdcbb66ba497 98
j3 0:cdcbb66ba497 99 if (f >= 0.0F)
j3 0:cdcbb66ba497 100 {
j3 0:cdcbb66ba497 101 i = static_cast<int32_t>(f + 0.5F);
j3 0:cdcbb66ba497 102 }
j3 0:cdcbb66ba497 103 else
j3 0:cdcbb66ba497 104 {
j3 0:cdcbb66ba497 105 i = static_cast<int32_t>(f - 0.5F);
j3 0:cdcbb66ba497 106 }
j3 0:cdcbb66ba497 107
j3 0:cdcbb66ba497 108 return i;
j3 0:cdcbb66ba497 109 }