Vincent Belanger / Mbed 2 deprecated APP4

APP 4

Dependencies:   mbed CRC16 mbed-rtos

APP.cpp@18:493a5aa7e4ec, 2016-02-22 (annotated)

Committer:
vinbel93
Date:
Mon Feb 22 18:31:05 2016 +0000
Revision:
18:493a5aa7e4ec
Parent:
16:cf433716f8d6
Parent:
17:8d8c33bdcaf5
Child:
19:41e914ab0d19
Merge des 'ti changes

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 9:b937f9c6d682 3 #include "Frame.h"
vinbel93 14:9505b98c6623 4 #include "MEF.h"
vinbel93 0:ac5e42371639 5
vinbel93 0:ac5e42371639 6 Serial pc(USBTX, USBRX);
vinbel93 13:195826b8c61b 7 DigitalOut out(p8);
vinbel93 13:195826b8c61b 8 DigitalIn in(p30);
vinbel93 0:ac5e42371639 9
vinbel93 6:3181f546e812 10 bool clockTick = false;
vinbel93 15:ed9511c3aac6 11 bitset<FRAMESIZE> message;// (string("1010101010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"));
manl2003 12:715af3660c73 12 bitset<MAX_DATA> decodedMessage;
manl2003 12:715af3660c73 13 bool dataReady;
manl2003 12:715af3660c73 14 bool frameDropped;
vinbel93 3:3ffa14e75b8a 15 int counter = 0;
vinbel93 13:195826b8c61b 16 unsigned int period = 0;
vinbel93 13:195826b8c61b 17 bool readBuffer[2] = {false, false};
vinbel93 13:195826b8c61b 18 bool readBufferReady = false;
vinbel93 17:8d8c33bdcaf5 19 bool value = false;
vinbel93 14:9505b98c6623 20 MEF mef;
manl2003 16:cf433716f8d6 21 STATES mefSTATE;
vinbel93 0:ac5e42371639 22
vinbel93 1:f212b6676849 23 int benchmark(void (*function) (void))
vinbel93 0:ac5e42371639 24 {
vinbel93 3:3ffa14e75b8a 25 int count = LPC_TIM2->TC;
vinbel93 0:ac5e42371639 26 function();
vinbel93 3:3ffa14e75b8a 27 return LPC_TIM2->TC - count;
vinbel93 0:ac5e42371639 28 }
vinbel93 0:ac5e42371639 29
vinbel93 13:195826b8c61b 30 extern "C" void TIMER1_IRQHandler()
vinbel93 0:ac5e42371639 31 {
vinbel93 13:195826b8c61b 32 if ((LPC_TIM1->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
vinbel93 0:ac5e42371639 33 {
vinbel93 13:195826b8c61b 34 LPC_TIM1->IR |= 1 << 0; // Clear MR0 interrupt flag
vinbel93 6:3181f546e812 35 clockTick = !clockTick;
vinbel93 13:195826b8c61b 36 out = encode(message[counter] & 0x1, clockTick);
vinbel93 6:3181f546e812 37
vinbel93 6:3181f546e812 38 if (clockTick)
vinbel93 0:ac5e42371639 39 {
vinbel93 6:3181f546e812 40 counter++;
vinbel93 0:ac5e42371639 41 }
vinbel93 6:3181f546e812 42
vinbel93 6:3181f546e812 43 if (counter >= FRAMESIZE)
vinbel93 0:ac5e42371639 44 {
vinbel93 6:3181f546e812 45 counter = 0;
vinbel93 0:ac5e42371639 46 }
vinbel93 0:ac5e42371639 47 }
vinbel93 0:ac5e42371639 48 }
vinbel93 13:195826b8c61b 49
vinbel93 13:195826b8c61b 50 extern "C" void TIMER2_IRQHandler()
manl2003 10:51ee22e230c7 51 {
vinbel93 13:195826b8c61b 52 unsigned int clocks = LPC_TIM2->CR0;
vinbel93 13:195826b8c61b 53 period = clocks; // preambule 01010101
manl2003 10:51ee22e230c7 54
vinbel93 13:195826b8c61b 55 if (!readBufferReady)
vinbel93 13:195826b8c61b 56 {
vinbel93 13:195826b8c61b 57 readBuffer[0] = in.read();
vinbel93 13:195826b8c61b 58 }
vinbel93 13:195826b8c61b 59 else
vinbel93 13:195826b8c61b 60 {
vinbel93 13:195826b8c61b 61 readBuffer[1] = in.read();
vinbel93 17:8d8c33bdcaf5 62 value = decode(readBuffer[0], readBuffer[1]);
vinbel93 14:9505b98c6623 63 mef.ReceiveBit(value);
vinbel93 13:195826b8c61b 64 }
manl2003 10:51ee22e230c7 65
vinbel93 17:8d8c33bdcaf5 66 readBufferReady = !readBufferReady;
vinbel93 13:195826b8c61b 67 LPC_TIM2->TC = 0;
manl2003 10:51ee22e230c7 68
vinbel93 13:195826b8c61b 69 LPC_TIM2->IR |= 0xFFFFFFFF; // clear Timer interrupt register
vinbel93 13:195826b8c61b 70 }
vinbel93 13:195826b8c61b 71
manl2003 7:733d500dbe5c 72 void initTimers()
vinbel93 0:ac5e42371639 73 {
vinbel93 13:195826b8c61b 74 //Timer 1 (match)
vinbel93 13:195826b8c61b 75 LPC_SC->PCLKSEL0 |= (1 << 4); // pclk = cclk timer1
manl2003 10:51ee22e230c7 76 LPC_SC->PCONP |= (1 << 2); // timer1 power on
manl2003 10:51ee22e230c7 77 LPC_TIM1->MR0 = CLOCKS_TO_SECOND / 10; // 100 ms
manl2003 10:51ee22e230c7 78 LPC_TIM1->MCR = 3; // interrupt and reset control
vinbel93 13:195826b8c61b 79 // Interrupt & reset timer on match
vinbel93 13:195826b8c61b 80 LPC_TIM1->EMR = (3 << 4);
vinbel93 13:195826b8c61b 81 NVIC_EnableIRQ(TIMER1_IRQn); // enable timer interrupt
vinbel93 13:195826b8c61b 82 LPC_TIM1->TCR = 1; // enable Timer
vinbel93 13:195826b8c61b 83
vinbel93 13:195826b8c61b 84 //Timer 2 (cap)
vinbel93 13:195826b8c61b 85 LPC_SC->PCLKSEL1 |= (1 << 12); // pclk = cclk timer2
vinbel93 13:195826b8c61b 86 LPC_SC->PCONP |= (1 << 22); // timer2 power on
vinbel93 13:195826b8c61b 87 LPC_TIM2->TC = 0; // clear timer counter
vinbel93 13:195826b8c61b 88 LPC_TIM2->PC = 0; // clear prescale counter
vinbel93 13:195826b8c61b 89 LPC_TIM2->PR = 0; // clear prescale register
vinbel93 13:195826b8c61b 90 LPC_TIM2->TCR |= (1 << 1); // reset timer
vinbel93 13:195826b8c61b 91 LPC_TIM2->TCR &= ~(1 << 1); // release reset
vinbel93 13:195826b8c61b 92 LPC_TIM2->IR = 0xFFFFFFFF; // clear interrupt register
vinbel93 13:195826b8c61b 93 LPC_TIM2->CCR |= 0x0000007; // enable rising-edge and falling-edge capture on 2.0
vinbel93 13:195826b8c61b 94 NVIC_EnableIRQ(TIMER2_IRQn); // enable timer interrupt
vinbel93 13:195826b8c61b 95 LPC_TIM2->TCR = 1; // start Timer
vinbel93 0:ac5e42371639 96 }
vinbel93 0:ac5e42371639 97
vinbel93 1:f212b6676849 98 int main()
vinbel93 0:ac5e42371639 99 {
vinbel93 15:ed9511c3aac6 100 message = buildFrame(convertToBits("ASDF", 4, &pc), 4, &pc);
vinbel93 9:b937f9c6d682 101
vinbel93 13:195826b8c61b 102 LPC_PINCON->PINSEL0 |= (3 << 8); // P0.4 = CAP2.0
manl2003 8:60499583959f 103 initTimers();
vinbel93 3:3ffa14e75b8a 104
vinbel93 3:3ffa14e75b8a 105 while (true)
vinbel93 0:ac5e42371639 106 {
vinbel93 15:ed9511c3aac6 107 if (dataReady)
vinbel93 15:ed9511c3aac6 108 {
vinbel93 15:ed9511c3aac6 109 pc.printf("ASDF");
vinbel93 15:ed9511c3aac6 110 }
vinbel93 13:195826b8c61b 111 pc.printf("%i ", period);
vinbel93 17:8d8c33bdcaf5 112 pc.printf("%i ", value);
vinbel93 13:195826b8c61b 113 pc.printf("%i \r\n", in.read());
vinbel93 13:195826b8c61b 114 //pc.printf("%i ", decode(in.read(), clockTick));
vinbel93 13:195826b8c61b 115 wait(0.1);
vinbel93 0:ac5e42371639 116 }
vinbel93 0:ac5e42371639 117 }
manl2003 12:715af3660c73 118
vinbel93 15:ed9511c3aac6 119 void _decodeCallback(bitset<MAX_DATA> decMessage)
manl2003 12:715af3660c73 120 {
vinbel93 17:8d8c33bdcaf5 121 decodedMessage = decMessage;
vinbel93 17:8d8c33bdcaf5 122 dataReady = true;
manl2003 12:715af3660c73 123 }
manl2003 12:715af3660c73 124
vinbel93 14:9505b98c6623 125 void _decodeError()
manl2003 12:715af3660c73 126 {
manl2003 12:715af3660c73 127 frameDropped = true;
vinbel93 17:8d8c33bdcaf5 128 }
vinbel93 17:8d8c33bdcaf5 129
manl2003 16:cf433716f8d6 130 void _updateState(STATES state)
manl2003 16:cf433716f8d6 131 {
vinbel93 18:493a5aa7e4ec 132 mefSTATE = state;
vinbel93 18:493a5aa7e4ec 133 }
vinbel93 18:493a5aa7e4ec 134
vinbel93 17:8d8c33bdcaf5 135 void _readDephased()
vinbel93 17:8d8c33bdcaf5 136 {
vinbel93 17:8d8c33bdcaf5 137 readBufferReady = !readBufferReady;
manl2003 12:715af3660c73 138 }