Vincent Belanger / Mbed 2 deprecated APP4

APP 4

Dependencies:   mbed CRC16 mbed-rtos

APP.cpp@8:60499583959f, 2016-02-21 (annotated)

Committer:
manl2003
Date:
Sun Feb 21 18:58:52 2016 +0000
Revision:
8:60499583959f
Parent:
7:733d500dbe5c
Parent:
6:3181f546e812
Child:
9:b937f9c6d682
Child:
10:51ee22e230c7
asddd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
manl2003 2:1250280a511b 1 #include "APP.h"
vinbel93 3:3ffa14e75b8a 2 #include "Manchester.h"
vinbel93 0:ac5e42371639 3
vinbel93 0:ac5e42371639 4 Serial pc(USBTX, USBRX);
vinbel93 6:3181f546e812 5 DigitalIn in(p9);
vinbel93 0:ac5e42371639 6
vinbel93 6:3181f546e812 7 bool clockTick = false;
vinbel93 6:3181f546e812 8 bitset<FRAMESIZE> message(string("1000111011110101011100000000000111011010101001111111011110011010"));
vinbel93 3:3ffa14e75b8a 9 int counter = 0;
vinbel93 0:ac5e42371639 10
vinbel93 1:f212b6676849 11 int benchmark(void (*function) (void))
vinbel93 0:ac5e42371639 12 {
vinbel93 3:3ffa14e75b8a 13 int count = LPC_TIM2->TC;
vinbel93 0:ac5e42371639 14 function();
vinbel93 3:3ffa14e75b8a 15 return LPC_TIM2->TC - count;
vinbel93 0:ac5e42371639 16 }
vinbel93 0:ac5e42371639 17
vinbel93 1:f212b6676849 18 extern "C" void TIMER2_IRQHandler()
vinbel93 0:ac5e42371639 19 {
vinbel93 0:ac5e42371639 20 if ((LPC_TIM2->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
vinbel93 0:ac5e42371639 21 {
vinbel93 3:3ffa14e75b8a 22 LPC_TIM2->IR |= 1 << 0; // Clear MR0 interrupt flag
vinbel93 6:3181f546e812 23 clockTick = !clockTick;
vinbel93 6:3181f546e812 24 LPC_TIM2->EMR = encode(message[counter], clockTick);
vinbel93 6:3181f546e812 25
vinbel93 6:3181f546e812 26 if (clockTick)
vinbel93 0:ac5e42371639 27 {
vinbel93 6:3181f546e812 28 counter++;
vinbel93 0:ac5e42371639 29 }
vinbel93 6:3181f546e812 30
vinbel93 6:3181f546e812 31 if (counter >= FRAMESIZE)
vinbel93 0:ac5e42371639 32 {
vinbel93 6:3181f546e812 33 counter = 0;
vinbel93 0:ac5e42371639 34 }
vinbel93 0:ac5e42371639 35 }
vinbel93 0:ac5e42371639 36 }
vinbel93 0:ac5e42371639 37
manl2003 7:733d500dbe5c 38 void initTimers()
vinbel93 0:ac5e42371639 39 {
manl2003 7:733d500dbe5c 40 //Timer 2 (match)
vinbel93 0:ac5e42371639 41 LPC_SC->PCLKSEL1 |= (1 << 12); // pclk = cclk timer2
vinbel93 0:ac5e42371639 42 LPC_SC->PCONP |= (1 << 22); // timer2 power on
manl2003 8:60499583959f 43 LPC_TIM2->MR0 = CLOCKS_TO_SECOND / 10; // 100 ms
vinbel93 3:3ffa14e75b8a 44 LPC_TIM2->MCR = 3; // interrupt and reset control
vinbel93 3:3ffa14e75b8a 45 // Interrupt & reset timer2 on match
manl2003 8:60499583959f 46 LPC_TIM2->EMR = (2 << 4); // toggle
vinbel93 0:ac5e42371639 47 NVIC_EnableIRQ(TIMER2_IRQn); // enable timer2 interrupt
vinbel93 0:ac5e42371639 48 LPC_TIM2->TCR = 1; // enable Timer2
manl2003 7:733d500dbe5c 49
manl2003 7:733d500dbe5c 50 //Timer 1 (cap)
manl2003 7:733d500dbe5c 51 LPC_SC->PCLKSEL1 |= (1 << 4); // pclk = cclk timer2
manl2003 7:733d500dbe5c 52 LPC_SC->PCONP |= (1 << 2); // timer1 power on
manl2003 8:60499583959f 53 LPC_TIM1->MR0 = CLOCKS_TO_SECOND / 10; // 100 ms
manl2003 7:733d500dbe5c 54 LPC_TIM1->MCR = 3; // interrupt and reset control
manl2003 7:733d500dbe5c 55 // Interrupt & reset timer1 on match
manl2003 7:733d500dbe5c 56 NVIC_EnableIRQ(TIMER1_IRQn); // enable timer1 interrupt
manl2003 7:733d500dbe5c 57 LPC_TIM1->TCR = 1; // enable Timer1
manl2003 8:60499583959f 58
vinbel93 0:ac5e42371639 59 }
vinbel93 0:ac5e42371639 60
vinbel93 1:f212b6676849 61 int main()
vinbel93 0:ac5e42371639 62 {
vinbel93 0:ac5e42371639 63 LPC_PINCON->PINSEL0 |= (3 << 12); // P0.6 = MAT2.0
manl2003 8:60499583959f 64 initTimers();
vinbel93 3:3ffa14e75b8a 65
vinbel93 3:3ffa14e75b8a 66 while (true)
vinbel93 0:ac5e42371639 67 {
vinbel93 6:3181f546e812 68 pc.printf("%i", decode(in.read(), clockTick));
vinbel93 6:3181f546e812 69 wait(0.2);
vinbel93 0:ac5e42371639 70 }
vinbel93 0:ac5e42371639 71 }