Éric Bisson / Mbed 2 deprecated Code_APP3_R

app3

Dependencies:   mbed

Fork of Code_APP1 by Louis Beaulieu

main.cpp@5:1a60144f7163, 2017-01-16 (annotated)

Committer:
ericbisson
Date:
Mon Jan 16 20:52:12 2017 +0000
Revision:
5:1a60144f7163
Parent:
4:ffd7cef72270
Child:
6:2ec2a74c807f
reset cursor + moving average + separate SPI and UART code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
LouBe4 0:52fba6f1554b 1 #include "mbed.h"
ericbisson 5:1a60144f7163 2 #include "header.h"
LouBe4 0:52fba6f1554b 3
LouBe4 3:5dcf9b78f3ad 4 #define PI 3.1416
LouBe4 3:5dcf9b78f3ad 5
LouBe4 0:52fba6f1554b 6 Serial pc(USBTX, USBRX);
LouBe4 0:52fba6f1554b 7 SPI spi(p11, p12, p13);
LouBe4 0:52fba6f1554b 8 DigitalOut cs(p14);
LouBe4 0:52fba6f1554b 9 I2C i2c(p28, p27);
LouBe4 0:52fba6f1554b 10 PwmOut led1(LED1);
LouBe4 1:3430643e8ed4 11
LouBe4 3:5dcf9b78f3ad 12 void calculer_angle(char bufferAngle[], int accZ)
LouBe4 1:3430643e8ed4 13 {
ericbisson 5:1a60144f7163 14 float angle = abs(cos(static_cast<float>(moyenne_mobile(accZ)*90/64)*PI/180)*90);
LouBe4 3:5dcf9b78f3ad 15 int angleInt = (int)(angle*100);
LouBe4 4:ffd7cef72270 16 snprintf(bufferAngle, 5, "%d", angleInt);
LouBe4 3:5dcf9b78f3ad 17
LouBe4 3:5dcf9b78f3ad 18 if(angle < 10)
LouBe4 3:5dcf9b78f3ad 19 {
LouBe4 3:5dcf9b78f3ad 20 bufferAngle[3] = bufferAngle[2];
LouBe4 3:5dcf9b78f3ad 21 bufferAngle[2] = bufferAngle[1];
LouBe4 3:5dcf9b78f3ad 22 bufferAngle[1] = bufferAngle[0];
LouBe4 3:5dcf9b78f3ad 23 bufferAngle[0] = '0';
ericbisson 5:1a60144f7163 24 }
LouBe4 1:3430643e8ed4 25 }
LouBe4 0:52fba6f1554b 26
LouBe4 0:52fba6f1554b 27 int main() {
ericbisson 5:1a60144f7163 28 int addrChip = 0x3A;
ericbisson 5:1a60144f7163 29 char buffer[3] = {0,0,0};
ericbisson 5:1a60144f7163 30
ericbisson 5:1a60144f7163 31 SetClockAndMode(250000, 0);
ericbisson 5:1a60144f7163 32 change_dots(0x02);
ericbisson 5:1a60144f7163 33
ericbisson 5:1a60144f7163 34 //Activer l'accéléromètre pour lecture 8 bits
ericbisson 5:1a60144f7163 35 char activation[2] = {0x2A, 0x03};
ericbisson 5:1a60144f7163 36 char fullScale[2] = {0x0E, 0x00};
ericbisson 5:1a60144f7163 37 char resultat[5] = {0};
ericbisson 5:1a60144f7163 38 i2c.write(addrChip, activation, 2, true);
ericbisson 5:1a60144f7163 39 i2c.write(addrChip, fullScale, 2, true);
ericbisson 5:1a60144f7163 40
LouBe4 3:5dcf9b78f3ad 41 while(1)
ericbisson 5:1a60144f7163 42 {
LouBe4 3:5dcf9b78f3ad 43 //Aller lire les valeurs d'accélération
LouBe4 3:5dcf9b78f3ad 44 buffer[0] = 0x01;
LouBe4 3:5dcf9b78f3ad 45 i2c.write(addrChip, buffer, 1, true);
LouBe4 3:5dcf9b78f3ad 46 i2c.read(addrChip, buffer, 3);
LouBe4 3:5dcf9b78f3ad 47 calculer_angle(resultat, buffer[2]);
LouBe4 3:5dcf9b78f3ad 48
ericbisson 5:1a60144f7163 49 chip_select(false);
ericbisson 5:1a60144f7163 50 write_to_7segment(resultat[0],resultat[1],resultat[2],resultat[3]);
ericbisson 5:1a60144f7163 51 chip_select(true);
ericbisson 5:1a60144f7163 52 wait(0.1);
ericbisson 5:1a60144f7163 53 }
ericbisson 5:1a60144f7163 54 }
ericbisson 5:1a60144f7163 55
ericbisson 5:1a60144f7163 56 void SetClockAndMode(int Speed, char Mode)
ericbisson 5:1a60144f7163 57 {
ericbisson 5:1a60144f7163 58 if (IS_USING_SPI)
ericbisson 5:1a60144f7163 59 {
ericbisson 5:1a60144f7163 60 spi.format(8,Mode);
ericbisson 5:1a60144f7163 61 spi.frequency(Speed);
ericbisson 5:1a60144f7163 62 }
ericbisson 5:1a60144f7163 63 else
ericbisson 5:1a60144f7163 64 {
ericbisson 5:1a60144f7163 65 // TODO
ericbisson 5:1a60144f7163 66 }
ericbisson 5:1a60144f7163 67 }
ericbisson 5:1a60144f7163 68
ericbisson 5:1a60144f7163 69 // function to change displayed dots
ericbisson 5:1a60144f7163 70 void change_dots(char dot)
ericbisson 5:1a60144f7163 71 {
ericbisson 5:1a60144f7163 72 if (IS_USING_SPI)
ericbisson 5:1a60144f7163 73 {
LouBe4 3:5dcf9b78f3ad 74 spi.write(0x77);
ericbisson 5:1a60144f7163 75 spi.write(dot);
ericbisson 5:1a60144f7163 76 }
ericbisson 5:1a60144f7163 77 else
ericbisson 5:1a60144f7163 78 {
ericbisson 5:1a60144f7163 79 // TODO
ericbisson 5:1a60144f7163 80 }
ericbisson 5:1a60144f7163 81 }
ericbisson 5:1a60144f7163 82
ericbisson 5:1a60144f7163 83 void ResetCursor()
ericbisson 5:1a60144f7163 84 {
ericbisson 5:1a60144f7163 85 if (IS_USING_SPI)
ericbisson 5:1a60144f7163 86 {
ericbisson 5:1a60144f7163 87 spi.write(0x79);
ericbisson 5:1a60144f7163 88 spi.write(0);
ericbisson 5:1a60144f7163 89 }
ericbisson 5:1a60144f7163 90 else
ericbisson 5:1a60144f7163 91 {
ericbisson 5:1a60144f7163 92 // TODO
LouBe4 3:5dcf9b78f3ad 93 }
LouBe4 0:52fba6f1554b 94 }
ericbisson 5:1a60144f7163 95
ericbisson 5:1a60144f7163 96 // function used to write numbers to all four digits
ericbisson 5:1a60144f7163 97 void write_to_7segment(char d1, char d2, char d3, char d4)
ericbisson 5:1a60144f7163 98 {
ericbisson 5:1a60144f7163 99 ResetCursor();
ericbisson 5:1a60144f7163 100 if (IS_USING_SPI)
ericbisson 5:1a60144f7163 101 {
ericbisson 5:1a60144f7163 102 spi.write(d1);
ericbisson 5:1a60144f7163 103 spi.write(d2);
ericbisson 5:1a60144f7163 104 spi.write(d3);
ericbisson 5:1a60144f7163 105 spi.write(d4);
ericbisson 5:1a60144f7163 106 }
ericbisson 5:1a60144f7163 107 else
ericbisson 5:1a60144f7163 108 {
ericbisson 5:1a60144f7163 109 // TODO
ericbisson 5:1a60144f7163 110 }
ericbisson 5:1a60144f7163 111 }
ericbisson 5:1a60144f7163 112
ericbisson 5:1a60144f7163 113 void chip_select(bool bSet)
ericbisson 5:1a60144f7163 114 {
ericbisson 5:1a60144f7163 115 if (IS_USING_SPI)
ericbisson 5:1a60144f7163 116 {
ericbisson 5:1a60144f7163 117 if (!bSet)
ericbisson 5:1a60144f7163 118 {
ericbisson 5:1a60144f7163 119 wait_us(25);
ericbisson 5:1a60144f7163 120 }
ericbisson 5:1a60144f7163 121 cs = bSet;
ericbisson 5:1a60144f7163 122 if (bSet)
ericbisson 5:1a60144f7163 123 {
ericbisson 5:1a60144f7163 124 wait_us(25);
ericbisson 5:1a60144f7163 125 }
ericbisson 5:1a60144f7163 126 }
ericbisson 5:1a60144f7163 127 }
ericbisson 5:1a60144f7163 128
ericbisson 5:1a60144f7163 129 // function used to calculate and return the new value of a moving average
ericbisson 5:1a60144f7163 130 int moyenne_mobile(int newData)
ericbisson 5:1a60144f7163 131 {
ericbisson 5:1a60144f7163 132 int sum = 0;
ericbisson 5:1a60144f7163 133 MovingAverage.buffer[MovingAverage.cursor] = newData;
ericbisson 5:1a60144f7163 134 MovingAverage.cursor++;
ericbisson 5:1a60144f7163 135 if (MovingAverage.cursor >= MOVING_AVG_SIZE)
ericbisson 5:1a60144f7163 136 {
ericbisson 5:1a60144f7163 137 MovingAverage.cursor = 0;
ericbisson 5:1a60144f7163 138 MovingAverage.bFilled = true;
ericbisson 5:1a60144f7163 139 }
ericbisson 5:1a60144f7163 140
ericbisson 5:1a60144f7163 141 if (MovingAverage.bFilled)
ericbisson 5:1a60144f7163 142 {
ericbisson 5:1a60144f7163 143 for (int i = 0; i < MOVING_AVG_SIZE; i++)
ericbisson 5:1a60144f7163 144 {
ericbisson 5:1a60144f7163 145 sum += MovingAverage.buffer[i];
ericbisson 5:1a60144f7163 146 }
ericbisson 5:1a60144f7163 147 sum = sum / MOVING_AVG_SIZE;
ericbisson 5:1a60144f7163 148 }
ericbisson 5:1a60144f7163 149 else
ericbisson 5:1a60144f7163 150 {
ericbisson 5:1a60144f7163 151 for (int i = 0; i < MovingAverage.cursor; i++)
ericbisson 5:1a60144f7163 152 {
ericbisson 5:1a60144f7163 153 sum += MovingAverage.buffer[i];
ericbisson 5:1a60144f7163 154 }
ericbisson 5:1a60144f7163 155 sum = sum / MovingAverage.cursor;
ericbisson 5:1a60144f7163 156 }
ericbisson 5:1a60144f7163 157
ericbisson 5:1a60144f7163 158 return sum;
ericbisson 5:1a60144f7163 159 }