Ernesto Palacios / Mbed 2 deprecated DeslizadorUTN

Proyecto de Tesis en Mecatrónica. Universidad Técnica del Norte. Ernesto Palacios <mecatronica.mid@gmail.com>

Dependencies:   EthernetNetIf HTTPServer QEI_hw RPCInterface mbed

main.cpp@1:186187f69295, 2012-03-23 (annotated)

Committer:
Yo_Robot
Date:
Fri Mar 23 03:16:06 2012 +0000
Revision:
1:186187f69295
Parent:
0:8c5c37feacb8
Child:
2:a1b556d78a7f
Works as toggle BUT no output yet

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Yo_Robot 1:186187f69295 1 // Example to set up an PTO based on the LPC TIMER0 external match register, ernestop
Yo_Robot 1:186187f69295 2
Yo_Robot 1:186187f69295 3 #include "mbed.h"
Yo_Robot 1:186187f69295 4
Yo_Robot 1:186187f69295 5 Serial pc( USBTX, USBRX );
Yo_Robot 1:186187f69295 6 DigitalOut myled( LED1 );
Yo_Robot 1:186187f69295 7
Yo_Robot 1:186187f69295 8 void Setup_PTO_Timer0();
Yo_Robot 1:186187f69295 9
Yo_Robot 1:186187f69295 10 int main() {
Yo_Robot 1:186187f69295 11
Yo_Robot 1:186187f69295 12 int six = 0;
Yo_Robot 1:186187f69295 13 six |= 15UL << 8; // New Value 16
Yo_Robot 1:186187f69295 14 pc.printf( "\n 1 << 8 = %d ", six );
Yo_Robot 1:186187f69295 15
Yo_Robot 1:186187f69295 16 Setup_PTO_Timer0();
Yo_Robot 1:186187f69295 17
Yo_Robot 1:186187f69295 18 while(1) {
Yo_Robot 1:186187f69295 19
Yo_Robot 1:186187f69295 20 int test = ( (uint32_t)LPC_TIM0->EMR & 4 ) >> 2 ;
Yo_Robot 1:186187f69295 21 if( test )
Yo_Robot 1:186187f69295 22 myled = 1;
Yo_Robot 1:186187f69295 23 else
Yo_Robot 1:186187f69295 24 myled = 0;
Yo_Robot 1:186187f69295 25
Yo_Robot 1:186187f69295 26 wait(0.05);
Yo_Robot 1:186187f69295 27
Yo_Robot 1:186187f69295 28 }
Yo_Robot 1:186187f69295 29 }
Yo_Robot 1:186187f69295 30
Yo_Robot 1:186187f69295 31 void Setup_PTO_Timer0(){
Yo_Robot 1:186187f69295 32
Yo_Robot 1:186187f69295 33 // power up TIMER0 (PCONP[1])
Yo_Robot 1:186187f69295 34 LPC_SC->PCONP |= 1 << 1;
Yo_Robot 1:186187f69295 35
Yo_Robot 1:186187f69295 36 // reset and set TIMER0 to timer mode
Yo_Robot 1:186187f69295 37 LPC_TIM0->TCR = 0x2;
Yo_Robot 1:186187f69295 38 LPC_TIM0->CTCR = 0x0;
Yo_Robot 1:186187f69295 39
Yo_Robot 1:186187f69295 40 // set prescaler
Yo_Robot 1:186187f69295 41 LPC_TIM0->PR = 1000;
Yo_Robot 1:186187f69295 42
Yo_Robot 1:186187f69295 43 // calculate period (1 interrupt every second)
Yo_Robot 1:186187f69295 44 uint32_t period = ( SystemCoreClock / 4000 );
Yo_Robot 1:186187f69295 45
Yo_Robot 1:186187f69295 46 // set Extyernat match register
Yo_Robot 1:186187f69295 47 LPC_TIM0->MR2 = period;
Yo_Robot 1:186187f69295 48 LPC_TIM0->MR3 = period * 2;
Yo_Robot 1:186187f69295 49
Yo_Robot 1:186187f69295 50 LPC_TIM0->MCR |= 1 << 10; // reset on MR3
Yo_Robot 1:186187f69295 51
Yo_Robot 1:186187f69295 52 LPC_TIM0->EMR |= 15UL << 8; // Toogle Pin MAT2.2
Yo_Robot 1:186187f69295 53 // and MAT2.3
Yo_Robot 1:186187f69295 54
Yo_Robot 1:186187f69295 55 LPC_PINCON->PINSEL0 |= 15UL << 16; //Set Funtcion to MAT2.2
Yo_Robot 1:186187f69295 56 // and MAT2.3
Yo_Robot 1:186187f69295 57
Yo_Robot 1:186187f69295 58 //Start the Timer 0
Yo_Robot 1:186187f69295 59 LPC_TIM0->TCR = 1;
Yo_Robot 1:186187f69295 60
Yo_Robot 1:186187f69295 61 //OUTPUT ON PIN_5 AND PIN_6
Yo_Robot 1:186187f69295 62 // OF MBED WILL TOGGLE EVERY
Yo_Robot 1:186187f69295 63 // SECOND... I hope!
Yo_Robot 1:186187f69295 64 }
Yo_Robot 1:186187f69295 65
Yo_Robot 1:186187f69295 66
Yo_Robot 1:186187f69295 67