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hw_setup.cpp
- Committer:
- benkatz
- Date:
- 2017-03-02
- Revision:
- 20:bf9ea5125d52
- Child:
- 22:60276ba87ac6
File content as of revision 20:bf9ea5125d52:
#include "mbed.h"
#include "hw_setup.h"
#include "hw_config.h"
#include "structs.h"
#include "FastPWM.h"
void Init_PWM(GPIOStruct *gpio){
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN; // enable the clock to GPIOC
RCC->APB1ENR |= 0x00000001; // enable TIM2 clock
RCC->APB2ENR |= RCC_APB2ENR_TIM1EN; // enable TIM1 clock
//GPIOC->MODER = (1 << 8); // set pin 4 to be general purpose output
gpio->enable = new DigitalOut(ENABLE_PIN);
gpio->pwm_u = new FastPWM(PIN_U);
gpio->pwm_v = new FastPWM(PIN_V);
gpio->pwm_w = new FastPWM(PIN_W);
//ISR Setup
NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn); //Enable TIM1 IRQ
TIM1->DIER |= TIM_DIER_UIE; // enable update interrupt
TIM1->CR1 = 0x40;//CMS = 10, interrupt only when counting up
TIM1->CR1 |= TIM_CR1_UDIS;
TIM1->CR1 |= TIM_CR1_ARPE; // autoreload on,
TIM1->RCR |= 0x001; // update event once per up/down count of tim1
TIM1->EGR |= TIM_EGR_UG;
//PWM Setup
TIM1->PSC = 0x0; // no prescaler, timer counts up in sync with the peripheral clock
//TIM1->ARR = 0x1194; // 20 khz
TIM1->ARR = 0x8CA; //40 khz
TIM1->CCER |= ~(TIM_CCER_CC1NP); //Interupt when low side is on.
TIM1->CR1 |= TIM_CR1_CEN;
}
void Init_ADC(void){
// ADC Setup
RCC->APB2ENR |= RCC_APB2ENR_ADC2EN; // clock for ADC2
RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; // clock for ADC1
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;//0x0000002; // Enable clock for GPIOC
ADC->CCR = 0x00000006; // Regular simultaneous mode only
ADC1->CR2 |= ADC_CR2_ADON;//0x00000001; // ADC1 ON
ADC1->SQR3 = 0x000000A; // use PC_0 as input
ADC2->CR2 |= ADC_CR2_ADON;//0x00000001; // ADC1 ON
ADC2->SQR3 = 0x0000000B; // use PC_1 as input
GPIOC->MODER |= 0x0000000f; // PC_0, PC_1 are analog inputs
}
void Init_DAC(void){
RCC->APB1ENR |= 0x20000000; // Enable clock for DAC
DAC->CR |= 0x00000001; // DAC control reg, both channels ON
GPIOA->MODER |= 0x00000300; // PA04 as analog output
}
void Init_All_HW(GPIOStruct *gpio){
Init_PWM(gpio);
Init_ADC();
//Init_DAC();
}