Jason Schilling / Mbed 2 deprecated miniProject7

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Dependencies:   mbed TextLCD

main.cpp@2:e32b4313502d, 2019-01-17 (annotated)

Committer:
jschilling22
Date:
Thu Jan 17 00:10:52 2019 +0000
Revision:
2:e32b4313502d
Parent:
1:eccb59d79d6a 
work; ; ;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jschilling22 1:eccb59d79d6a 1 #include "mbed.h"
jschilling22 1:eccb59d79d6a 2
jschilling22 1:eccb59d79d6a 3 I2C tapI2C(p9, p10); //SDA, SCL
jschilling22 1:eccb59d79d6a 4 Serial pc(USBTX, USBRX);
jschilling22 1:eccb59d79d6a 5 void tapsHappened(void);
jschilling22 1:eccb59d79d6a 6 DigitalOut led1(LED1);
jschilling22 1:eccb59d79d6a 7 DigitalOut led2(LED2);
jschilling22 1:eccb59d79d6a 8 DigitalOut led4(LED4);
jschilling22 1:eccb59d79d6a 9 InterruptIn tapInterrupt(p5);
jschilling22 1:eccb59d79d6a 10 Timeout singleTimeout;
jschilling22 1:eccb59d79d6a 11 Timeout doubleTimeout;
jschilling22 1:eccb59d79d6a 12 void singleOff(void);
jschilling22 1:eccb59d79d6a 13 void doubleOff(void);
jschilling22 1:eccb59d79d6a 14 char buff[3];
jschilling22 1:eccb59d79d6a 15 const int accelAddr = 0x53 << 1;
jschilling22 1:eccb59d79d6a 16 const int tempAddr = 0x90;
jschilling22 1:eccb59d79d6a 17
jschilling22 1:eccb59d79d6a 18
jschilling22 1:eccb59d79d6a 19 int main() {
jschilling22 1:eccb59d79d6a 20 buff[0] = 0x1D;
jschilling22 1:eccb59d79d6a 21 buff[1] = 80;
jschilling22 1:eccb59d79d6a 22 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 23 wait(0.02);
jschilling22 1:eccb59d79d6a 24 buff[0] = 0x21;
jschilling22 1:eccb59d79d6a 25 buff[1] = 0x10;
jschilling22 1:eccb59d79d6a 26 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 27 wait(0.02);
jschilling22 1:eccb59d79d6a 28 buff[0] = 0x22;
jschilling22 1:eccb59d79d6a 29 buff[1] = 0x05;
jschilling22 1:eccb59d79d6a 30 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 31 wait(0.02);
jschilling22 1:eccb59d79d6a 32 buff[0] = 0x23;
jschilling22 1:eccb59d79d6a 33 buff[1] = 0xFF;
jschilling22 1:eccb59d79d6a 34 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 35 wait(0.02);
jschilling22 1:eccb59d79d6a 36 buff[0] = 0x2A;
jschilling22 1:eccb59d79d6a 37 buff[1] = 0x07;
jschilling22 1:eccb59d79d6a 38 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 39 wait(0.02);
jschilling22 1:eccb59d79d6a 40 buff[0] = 0x2E;
jschilling22 1:eccb59d79d6a 41 buff[1] = 0x60;
jschilling22 1:eccb59d79d6a 42 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 43 wait(0.02);
jschilling22 1:eccb59d79d6a 44 buff[1] = 0x2F;
jschilling22 1:eccb59d79d6a 45 buff[0] = 0x60;
jschilling22 1:eccb59d79d6a 46 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 47 wait(0.02);
jschilling22 1:eccb59d79d6a 48 buff[0] = 0x2D;
jschilling22 1:eccb59d79d6a 49 buff[1] = 0x08;
jschilling22 1:eccb59d79d6a 50 tapI2C.write(accelAddr, buff, 2);
jschilling22 1:eccb59d79d6a 51 wait(0.02);
jschilling22 1:eccb59d79d6a 52
jschilling22 1:eccb59d79d6a 53 tapInterrupt.rise(&tapsHappened);
jschilling22 2:e32b4313502d 54 tapsHappened();
jschilling22 1:eccb59d79d6a 55 while(1){
jschilling22 2:e32b4313502d 56 pc.printf("%d\r\n", tapInterrupt.read());
jschilling22 2:e32b4313502d 57 tapsHappened();
jschilling22 2:e32b4313502d 58 wait(0.5);
jschilling22 1:eccb59d79d6a 59 }
jschilling22 1:eccb59d79d6a 60 // Holds bytes for I2C reads/writes
jschilling22 1:eccb59d79d6a 61 short rawTemp; // Holder for temperature bits
jschilling22 1:eccb59d79d6a 62 float temp; // temperature, in deg C
jschilling22 1:eccb59d79d6a 63 // Load buffer with configuration info
jschilling22 1:eccb59d79d6a 64 buff[0] = 0x01; // Address of config register
jschilling22 1:eccb59d79d6a 65 buff[1] = 0x60; // Config Byte 1
jschilling22 1:eccb59d79d6a 66 buff[2] = 0xA0; // Config Byte 2
jschilling22 1:eccb59d79d6a 67 tapI2C.write(tempAddr, buff, 3);
jschilling22 1:eccb59d79d6a 68 buff[0] = 0x00; // Address of temperature reading register
jschilling22 1:eccb59d79d6a 69 tapI2C.write(tempAddr, buff, 1); // Only one byte (byte 0) is sent
jschilling22 1:eccb59d79d6a 70 while (true) {
jschilling22 1:eccb59d79d6a 71 wait(1);
jschilling22 1:eccb59d79d6a 72 tapI2C.read(tempAddr, buff, 2); // Read two-byte temperature data
jschilling22 1:eccb59d79d6a 73 // Buff[0] holds bits 4-11 of temperature
jschilling22 1:eccb59d79d6a 74 // Buff[1] holds bits 0-3 of temperature, followed by 0's as placeholders
jschilling22 1:eccb59d79d6a 75 rawTemp = (buff[0] <<8) + buff[1]; // Place the bits in 16-bit holder
jschilling22 1:eccb59d79d6a 76 rawTemp = rawTemp >> 4; // Shift right to drop placeholders, returning it to 12 bit
jschilling22 1:eccb59d79d6a 77 temp = 0.0625 * rawTemp;
jschilling22 1:eccb59d79d6a 78 pc.printf("%.2f deg C\r\n", temp);
jschilling22 1:eccb59d79d6a 79 }
jschilling22 1:eccb59d79d6a 80 }
jschilling22 1:eccb59d79d6a 81 // the ADXL345 is turned on for each transmission (and off after each transmission) to adjust its settings
jschilling22 1:eccb59d79d6a 82 /* for all of the setting adjustments, the first line is the address of the register.
jschilling22 1:eccb59d79d6a 83 The second line adjusts the setting to the desired value */
jschilling22 1:eccb59d79d6a 84 void tapsHappened(void) {
jschilling22 1:eccb59d79d6a 85 char tapByte;
jschilling22 1:eccb59d79d6a 86 buff[0]=0x30;
jschilling22 1:eccb59d79d6a 87 tapI2C.write(accelAddr,buff,1); // 0x30 is the address, 0x80 means we are reading it
jschilling22 1:eccb59d79d6a 88 tapI2C.read(accelAddr,buff,1); // write zero to get a read response (could send anything). tapByte is set equal to this response
jschilling22 1:eccb59d79d6a 89 tapByte = buff[0];
jschilling22 1:eccb59d79d6a 90 if (tapByte & 0x40) {
jschilling22 1:eccb59d79d6a 91 /* 0x40 converted to binary is a single tap. If there is a single tap,
jschilling22 1:eccb59d79d6a 92 it turns on LED 1 and activates the singleOff function one second later */
jschilling22 1:eccb59d79d6a 93 led1 = 1;
jschilling22 1:eccb59d79d6a 94 singleTimeout.attach(&singleOff, 1.0);
jschilling22 1:eccb59d79d6a 95 }
jschilling22 1:eccb59d79d6a 96 if (tapByte & 0x20) { /* 0x20 converted to binary is a double tap. If there is a double tap,
jschilling22 1:eccb59d79d6a 97 it turns on LED 2 and activates the doubleOff function one second later.
jschilling22 1:eccb59d79d6a 98 This will turn on LED 1 and 2 because every double tap starts with a single tap */
jschilling22 1:eccb59d79d6a 99 led2 = 1;
jschilling22 1:eccb59d79d6a 100 doubleTimeout.attach(&doubleOff, 1.0);
jschilling22 1:eccb59d79d6a 101 }
jschilling22 1:eccb59d79d6a 102 }
jschilling22 1:eccb59d79d6a 103 void singleOff(void) {
jschilling22 1:eccb59d79d6a 104 // first LED off when this function is called by the timeout
jschilling22 1:eccb59d79d6a 105 led1 = 0;
jschilling22 1:eccb59d79d6a 106 }
jschilling22 1:eccb59d79d6a 107 void doubleOff(void) {
jschilling22 1:eccb59d79d6a 108 // first LED off when this function is called by the timeout
jschilling22 1:eccb59d79d6a 109 led2 = 0;
jschilling22 1:eccb59d79d6a 110 }