hw_setup.cpp

00001 
00002 #include "mbed.h"
00003 #include "hw_setup.h"
00004 #include "hw_config.h"
00005 #include "structs.h"
00006 #include "FastPWM.h"
00007 
00008 void Init_PWM(GPIOStruct *gpio){
00009 
00010     RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;                        // enable the clock to GPIOC
00011     RCC->APB1ENR |= 0x00000001;                                 // enable TIM2 clock
00012     RCC->APB2ENR |= RCC_APB2ENR_TIM1EN;                         // enable TIM1 clock
00013 
00014     // GPIOC->MODER |= (1 << 10);                                  // set pin 5 to be general purpose output for LED
00015     GPIOB->MODER |= (1);                                        // pB_0, output
00016     GPIOB->MODER |= (1 << 2);                                   // PB_1, output
00017     
00018     
00019     gpio->enable = new DigitalOut(ENABLE_PIN);
00020     gpio->pwm_u = new FastPWM(PIN_U);
00021     gpio->pwm_v = new FastPWM(PIN_V);
00022     gpio->pwm_w = new FastPWM(PIN_W);
00023     
00024     
00025     
00026      //ISR Setup     
00027     
00028     NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn);                         //Enable TIM1 IRQ
00029 
00030     TIM1->DIER |= TIM_DIER_UIE;                                 // enable update interrupt
00031     TIM1->CR1 = 0x40;                                           // CMS = 10, interrupt only when counting up
00032     TIM1->CR1 |= TIM_CR1_UDIS;
00033     TIM1->CR1 |= TIM_CR1_ARPE;                                  // autoreload on, 
00034     TIM1->RCR |= 0x001;                                         // update event once per up/down count of tim1 
00035     TIM1->EGR |= TIM_EGR_UG;
00036  
00037     //PWM Setup
00038 
00039     TIM1->PSC = 0x0;                                            // no prescaler, timer counts up in sync with the peripheral clock
00040     TIM1->ARR = PWM_ARR;                                          // set auto reload, 40 khz
00041     TIM1->CCER |= ~(TIM_CCER_CC1NP);                            // Interupt when low side is on.
00042     TIM1->CR1 |= TIM_CR1_CEN;                                   // enable TIM1
00043     
00044     }
00045 
00046 void Init_ADC(void){
00047     // ADC Setup
00048      RCC->APB2ENR |= RCC_APB2ENR_ADC3EN;                        // clock for ADC3
00049      RCC->APB2ENR |= RCC_APB2ENR_ADC2EN;                        // clock for ADC2
00050      RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;                        // clock for ADC1
00051      
00052      RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;                        // Enable clock for GPIOC
00053      RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;                        // Enable clock for GPIOA
00054     
00055      ADC->CCR = 0x00000016;                                     // Regular simultaneous mode only
00056      ADC1->CR2 |= ADC_CR2_ADON;//0x00000001;                    // ADC1 ON
00057      ADC1->SQR3 = 0x000000A;                                    // use PC_0 as input- ADC1_IN0
00058      ADC2->CR2 |= ADC_CR2_ADON;//0x00000001;                    // ADC2 ON
00059      ADC2->SQR3 = 0x0000000B;                                   // use PC_1 as input - ADC2_IN11
00060      ADC3->CR2 |= ADC_CR2_ADON;                                 // ADC3 ON
00061      // ADC3->SQR3 = 0x00000000;                                   // use PA_0, - ADC3_IN0
00062      ADC3->SQR3 = 0x0000000D;                                   // PC_4 a, ADC3)IN0
00063      // GPIOC->MODER |= 0x0000000f;                                // Alternate function, PC_0, PC_1 are analog inputs 
00064      GPIOC->MODER |= 0x000000cf;
00065      
00066      // GPIOA->MODER |= 0x3;                                       // PA_0 as analog input
00067      
00068      ADC1->SMPR1 |= 0x1;                                        // 15 cycles on CH_10, 0b 001
00069      ADC2->SMPR1 |= 0x8;                                        // 15 cycles on CH_11, 0b 0001 000
00070      // ADC3->SMPR2 |= 0x1;                                        // 15 cycles on CH_0, 0b 001;
00071      ADC3->SMPR1 |= 0x0200;                                     // 15 cycles on CH_13, 0b 001 000 000 000
00072 
00073 
00074 
00075     }
00076 
00077 void Init_DAC(void){
00078      RCC->APB1ENR |= 0x20000000;                                // Enable clock for DAC
00079      DAC->CR |= 0x00000001;                                     // DAC control reg, both channels ON
00080      GPIOA->MODER |= 0x00000300;                                // PA04 as analog output  
00081     }
00082 
00083 void Init_All_HW(GPIOStruct *gpio){
00084     Init_PWM(gpio);
00085     Init_ADC();
00086     gpio->led = new DigitalOut(LED);
00087     //Init_DAC();
00088     
00089     }