Proyecto de Tesis en Mecatrónica. Universidad Técnica del Norte. Ernesto Palacios <mecatronica.mid@gmail.com>
Dependencies: EthernetNetIf HTTPServer QEI_hw RPCInterface mbed
setup.cpp@5:c5aea1eb10bb, 2012-03-28 (annotated)
- Committer:
- Yo_Robot
- Date:
- Wed Mar 28 23:13:53 2012 +0000
- Revision:
- 5:c5aea1eb10bb
- Parent:
- 4:552beeda4722
- Child:
- 6:b4dae934e1ea
First RPC Version, seems to work ok....
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Yo_Robot | 4:552beeda4722 | 1 | /** |
Yo_Robot | 4:552beeda4722 | 2 | * @brief Tren de impulsos con Timer2 |
Yo_Robot | 4:552beeda4722 | 3 | * @file setup.cpp |
Yo_Robot | 4:552beeda4722 | 4 | * @author Ernesto Palacios |
Yo_Robot | 4:552beeda4722 | 5 | * |
Yo_Robot | 4:552beeda4722 | 6 | * Created on 25 de Marzo de 2012 |
Yo_Robot | 4:552beeda4722 | 7 | * |
Yo_Robot | 4:552beeda4722 | 8 | * Licencia GPL v3.0 |
Yo_Robot | 4:552beeda4722 | 9 | * http://www.gnu.org/licenses/gpl-3.0.html |
Yo_Robot | 4:552beeda4722 | 10 | */ |
Yo_Robot | 4:552beeda4722 | 11 | |
Yo_Robot | 3:8d5a9e3cd680 | 12 | |
Yo_Robot | 3:8d5a9e3cd680 | 13 | #include "setup.h" |
Yo_Robot | 3:8d5a9e3cd680 | 14 | #include "mbed.h" |
Yo_Robot | 3:8d5a9e3cd680 | 15 | |
Yo_Robot | 3:8d5a9e3cd680 | 16 | // Salida Serial de mbed |
Yo_Robot | 3:8d5a9e3cd680 | 17 | extern Serial pc; |
Yo_Robot | 3:8d5a9e3cd680 | 18 | |
Yo_Robot | 3:8d5a9e3cd680 | 19 | |
Yo_Robot | 4:552beeda4722 | 20 | void setTimer2() |
Yo_Robot | 3:8d5a9e3cd680 | 21 | { |
Yo_Robot | 3:8d5a9e3cd680 | 22 | // Encender Timer2 (PCONP[22]) |
Yo_Robot | 3:8d5a9e3cd680 | 23 | LPC_SC->PCONP |= 1 << 22; |
Yo_Robot | 3:8d5a9e3cd680 | 24 | |
Yo_Robot | 3:8d5a9e3cd680 | 25 | // Resetear y parar el Timer |
Yo_Robot | 3:8d5a9e3cd680 | 26 | LPC_TIM2->TCR = 0x2; |
Yo_Robot | 3:8d5a9e3cd680 | 27 | LPC_TIM2->CTCR = 0x0; |
Yo_Robot | 3:8d5a9e3cd680 | 28 | |
Yo_Robot | 4:552beeda4722 | 29 | // Establecer el Preescaler en cero |
Yo_Robot | 4:552beeda4722 | 30 | // SIn Preesclaer |
Yo_Robot | 4:552beeda4722 | 31 | LPC_TIM2->PR = 0; |
Yo_Robot | 3:8d5a9e3cd680 | 32 | |
Yo_Robot | 4:552beeda4722 | 33 | // Calcular el periodo Inicial |
Yo_Robot | 4:552beeda4722 | 34 | uint32_t periodo = ( SystemCoreClock / 400 ); |
Yo_Robot | 3:8d5a9e3cd680 | 35 | |
Yo_Robot | 3:8d5a9e3cd680 | 36 | // Establecer los Registros de Coincidencia |
Yo_Robot | 3:8d5a9e3cd680 | 37 | // ( Match Register ) |
Yo_Robot | 3:8d5a9e3cd680 | 38 | LPC_TIM2->MR2 = periodo; |
Yo_Robot | 4:552beeda4722 | 39 | LPC_TIM2->MR3 = periodo; // Legacy, salidas identicas |
Yo_Robot | 3:8d5a9e3cd680 | 40 | |
Yo_Robot | 4:552beeda4722 | 41 | LPC_TIM2->MCR |= 1 << 7; // Resetear Timer en MR2 |
Yo_Robot | 3:8d5a9e3cd680 | 42 | |
Yo_Robot | 3:8d5a9e3cd680 | 43 | LPC_TIM2->EMR |= 15UL << 8; // Alternar Pin MAT2.2 |
Yo_Robot | 3:8d5a9e3cd680 | 44 | // y MAT2.3 |
Yo_Robot | 3:8d5a9e3cd680 | 45 | |
Yo_Robot | 3:8d5a9e3cd680 | 46 | LPC_PINCON->PINSEL0 |= 15UL << 16; //Activar MAT2.2 |
Yo_Robot | 5:c5aea1eb10bb | 47 | // y MAT2.3 como salidas |
Yo_Robot | 5:c5aea1eb10bb | 48 | |
Yo_Robot | 3:8d5a9e3cd680 | 49 | } |
Yo_Robot | 3:8d5a9e3cd680 | 50 | |
Yo_Robot | 3:8d5a9e3cd680 | 51 | |
Yo_Robot | 4:552beeda4722 | 52 | int getMRvalue( int fout ) |
Yo_Robot | 3:8d5a9e3cd680 | 53 | { |
Yo_Robot | 4:552beeda4722 | 54 | float exact, error; |
Yo_Robot | 4:552beeda4722 | 55 | int toRegister; |
Yo_Robot | 4:552beeda4722 | 56 | |
Yo_Robot | 4:552beeda4722 | 57 | exact = (24000000 /(fout*2) ) -1; |
Yo_Robot | 4:552beeda4722 | 58 | toRegister = exact; // Valor redondeado; |
Yo_Robot | 4:552beeda4722 | 59 | error = exact - toRegister; |
Yo_Robot | 4:552beeda4722 | 60 | |
Yo_Robot | 5:c5aea1eb10bb | 61 | printf( "\n\n MR value: %d\n error: %f\n" ,toRegister ,error ); |
Yo_Robot | 4:552beeda4722 | 62 | |
Yo_Robot | 4:552beeda4722 | 63 | return toRegister; |
Yo_Robot | 3:8d5a9e3cd680 | 64 | } |
Yo_Robot | 3:8d5a9e3cd680 | 65 | |
Yo_Robot | 3:8d5a9e3cd680 | 66 | |
Yo_Robot | 3:8d5a9e3cd680 | 67 | void setMR2( int newValue ) |
Yo_Robot | 3:8d5a9e3cd680 | 68 | { |
Yo_Robot | 4:552beeda4722 | 69 | LPC_TIM2->MR2 = newValue; // Las dos salidas son identicas |
Yo_Robot | 4:552beeda4722 | 70 | LPC_TIM2->MR3 = newValue; // Para testear el programa. |
Yo_Robot | 3:8d5a9e3cd680 | 71 | } |
Yo_Robot | 3:8d5a9e3cd680 | 72 | |
Yo_Robot | 3:8d5a9e3cd680 | 73 | |
Yo_Robot | 3:8d5a9e3cd680 | 74 | |
Yo_Robot | 3:8d5a9e3cd680 | 75 | void startTimer2() |
Yo_Robot | 3:8d5a9e3cd680 | 76 | { |
Yo_Robot | 3:8d5a9e3cd680 | 77 | // Arrancer el Timer 2 |
Yo_Robot | 3:8d5a9e3cd680 | 78 | LPC_TIM2->TCR = 1; |
Yo_Robot | 3:8d5a9e3cd680 | 79 | } |
Yo_Robot | 3:8d5a9e3cd680 | 80 | |
Yo_Robot | 3:8d5a9e3cd680 | 81 | void stopTimer2() |
Yo_Robot | 3:8d5a9e3cd680 | 82 | { |
Yo_Robot | 4:552beeda4722 | 83 | // Detener el Timer 2 |
Yo_Robot | 3:8d5a9e3cd680 | 84 | LPC_TIM2->TCR = 0x2; |
Yo_Robot | 4:552beeda4722 | 85 | } |
Yo_Robot | 4:552beeda4722 | 86 | |
Yo_Robot | 4:552beeda4722 | 87 | /* LEGACY FUNCTIONS |
Yo_Robot | 4:552beeda4722 | 88 | * |
Yo_Robot | 5:c5aea1eb10bb | 89 | * El codigo actual no hace referencia a estas funciones |
Yo_Robot | 5:c5aea1eb10bb | 90 | * sin embargo no hay problema en definirlas. |
Yo_Robot | 4:552beeda4722 | 91 | */ |
Yo_Robot | 4:552beeda4722 | 92 | void setMR3( int newValue ) |
Yo_Robot | 4:552beeda4722 | 93 | { |
Yo_Robot | 4:552beeda4722 | 94 | LPC_TIM2->MR3 = newValue; |
Yo_Robot | 4:552beeda4722 | 95 | } |
Yo_Robot | 4:552beeda4722 | 96 | |
Yo_Robot | 4:552beeda4722 | 97 | |
Yo_Robot | 4:552beeda4722 | 98 | void setPrescaler( int newValue) |
Yo_Robot | 4:552beeda4722 | 99 | { |
Yo_Robot | 4:552beeda4722 | 100 | LPC_TIM2->PR = newValue; |
Yo_Robot | 4:552beeda4722 | 101 | } |
Yo_Robot | 5:c5aea1eb10bb | 102 | |
Yo_Robot | 5:c5aea1eb10bb | 103 |