Vincent Belanger / Mbed 2 deprecated APP4

APP 4

Dependencies:   mbed CRC16 mbed-rtos

APP_match.cpp@0:ac5e42371639, 2016-02-20 (annotated)

Committer:
vinbel93
Date:
Sat Feb 20 18:26:09 2016 +0000
Revision:
0:ac5e42371639
1st commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vinbel93 0:ac5e42371639 1 #include "mbed.h"
vinbel93 0:ac5e42371639 2 #include "LPC17xx.h"
vinbel93 0:ac5e42371639 3
vinbel93 0:ac5e42371639 4 #define CLOCKS_TO_SECOND 96000000
vinbel93 0:ac5e42371639 5
vinbel93 0:ac5e42371639 6 Serial pc(USBTX, USBRX);
vinbel93 0:ac5e42371639 7
vinbel93 0:ac5e42371639 8 int state = 0;
vinbel93 0:ac5e42371639 9 int temps = -1;
vinbel93 0:ac5e42371639 10 float tempsHaut = 0.4;
vinbel93 0:ac5e42371639 11 float tempsBas = 0.1;
vinbel93 0:ac5e42371639 12
vinbel93 0:ac5e42371639 13 void asdf()
vinbel93 0:ac5e42371639 14 {
vinbel93 0:ac5e42371639 15 for (int i = 0; i < 100000000; i++)
vinbel93 0:ac5e42371639 16 {
vinbel93 0:ac5e42371639 17
vinbel93 0:ac5e42371639 18 }
vinbel93 0:ac5e42371639 19 }
vinbel93 0:ac5e42371639 20
vinbel93 0:ac5e42371639 21 int benchSwag(void (*function) (void))
vinbel93 0:ac5e42371639 22 {
vinbel93 0:ac5e42371639 23 int counter = LPC_TIM2->TC;
vinbel93 0:ac5e42371639 24 function();
vinbel93 0:ac5e42371639 25 return LPC_TIM2->TC - counter;
vinbel93 0:ac5e42371639 26
vinbel93 0:ac5e42371639 27 }
vinbel93 0:ac5e42371639 28
vinbel93 0:ac5e42371639 29 void swagger()
vinbel93 0:ac5e42371639 30 {
vinbel93 0:ac5e42371639 31 if ((LPC_TIM2->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
vinbel93 0:ac5e42371639 32 {
vinbel93 0:ac5e42371639 33 if (state == 0)
vinbel93 0:ac5e42371639 34 {
vinbel93 0:ac5e42371639 35 state = 1;
vinbel93 0:ac5e42371639 36 LPC_TIM2->MR0 = (int) CLOCKS_TO_SECOND * tempsHaut;
vinbel93 0:ac5e42371639 37 }
vinbel93 0:ac5e42371639 38 else if (state == 1)
vinbel93 0:ac5e42371639 39 {
vinbel93 0:ac5e42371639 40 state = 0;
vinbel93 0:ac5e42371639 41 LPC_TIM2->MR0 = (int) CLOCKS_TO_SECOND * tempsBas;
vinbel93 0:ac5e42371639 42 }
vinbel93 0:ac5e42371639 43
vinbel93 0:ac5e42371639 44 LPC_TIM2->IR |= 1 << 0; // Clear MR0 interrupt flag
vinbel93 0:ac5e42371639 45 }
vinbel93 0:ac5e42371639 46 }
vinbel93 0:ac5e42371639 47
vinbel93 0:ac5e42371639 48 extern "C" void TIMER2_IRQHandler()
vinbel93 0:ac5e42371639 49 {
vinbel93 0:ac5e42371639 50 temps = benchSwag(swagger);
vinbel93 0:ac5e42371639 51 }
vinbel93 0:ac5e42371639 52
vinbel93 0:ac5e42371639 53 void initTimer2()
vinbel93 0:ac5e42371639 54 {
vinbel93 0:ac5e42371639 55 LPC_SC->PCLKSEL1 |= (1 << 12); // pclk = cclk timer2
vinbel93 0:ac5e42371639 56 LPC_SC->PCONP |= (1 << 22); // timer2 power on
vinbel93 0:ac5e42371639 57 LPC_TIM2->MR0 = 9600000; // 100 msec
vinbel93 0:ac5e42371639 58 LPC_TIM2->MCR = 1; // interrupt and reset control
vinbel93 0:ac5e42371639 59 // 3 = Interrupt & reset timer2 on match
vinbel93 0:ac5e42371639 60 // 1 = Interrupt only, no reset of timer0
vinbel93 0:ac5e42371639 61 LPC_TIM2->EMR = (3 << 4); // EMC0 = 11 (Toogle)
vinbel93 0:ac5e42371639 62 NVIC_EnableIRQ(TIMER2_IRQn); // enable timer2 interrupt
vinbel93 0:ac5e42371639 63 LPC_TIM2->TCR = 1; // enable Timer2
vinbel93 0:ac5e42371639 64 }
vinbel93 0:ac5e42371639 65
vinbel93 0:ac5e42371639 66 int main ()
vinbel93 0:ac5e42371639 67 {
vinbel93 0:ac5e42371639 68 LPC_PINCON->PINSEL0 |= (3 << 12); // P0.6 = MAT2.0
vinbel93 0:ac5e42371639 69
vinbel93 0:ac5e42371639 70 initTimer2();
vinbel93 0:ac5e42371639 71
vinbel93 0:ac5e42371639 72 pc.printf("Time = %i\r\n", temps);
vinbel93 0:ac5e42371639 73
vinbel93 0:ac5e42371639 74 while(1)
vinbel93 0:ac5e42371639 75 {
vinbel93 0:ac5e42371639 76 wait(1.0);
vinbel93 0:ac5e42371639 77 }
vinbel93 0:ac5e42371639 78 }