Diff: hw_setup.cpp

Revision:

20:bf9ea5125d52

Child:

22:60276ba87ac6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hw_setup.cpp	Thu Mar 02 15:31:23 2017 +0000
@@ -0,0 +1,67 @@
+
+#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();
+    
+    }
\ No newline at end of file