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Dependencies: mbed-dev-f303 FastPWM3
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 gpio->enable = new DigitalOut(ENABLE_PIN); 00016 gpio->pwm_u = new FastPWM(PIN_U); 00017 gpio->pwm_v = new FastPWM(PIN_V); 00018 gpio->pwm_w = new FastPWM(PIN_W); 00019 00020 00021 00022 //ISR Setup 00023 00024 NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn); //Enable TIM1 IRQ 00025 00026 TIM1->DIER |= TIM_DIER_UIE; // enable update interrupt 00027 TIM1->CR1 = 0x40; // CMS = 10, interrupt only when counting up 00028 TIM1->CR1 |= TIM_CR1_UDIS; 00029 TIM1->CR1 |= TIM_CR1_ARPE; // autoreload on, 00030 TIM1->RCR |= 0x001; // update event once per up/down count of tim1 00031 TIM1->EGR |= TIM_EGR_UG; 00032 00033 //PWM Setup 00034 00035 TIM1->PSC = 0x0; // no prescaler, timer counts up in sync with the peripheral clock 00036 TIM1->ARR = PWM_ARR; // set auto reload, 40 khz 00037 TIM1->CCER |= ~(TIM_CCER_CC1NP); // Interupt when low side is on. 00038 TIM1->CR1 |= TIM_CR1_CEN; // enable TIM1 00039 00040 } 00041 00042 void Init_ADC(void){ 00043 // ADC Setup 00044 RCC->APB2ENR |= RCC_APB2ENR_ADC3EN; // clock for ADC3 00045 RCC->APB2ENR |= RCC_APB2ENR_ADC2EN; // clock for ADC2 00046 RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; // clock for ADC1 00047 00048 RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN; // Enable clock for GPIOC 00049 RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN; // Enable clock for GPIOA 00050 00051 ADC->CCR = 0x00000016; // Regular simultaneous mode only 00052 ADC1->CR2 |= ADC_CR2_ADON;//0x00000001; // ADC1 ON 00053 ADC1->SQR3 = 0x000000D; // use PC_3 as input- ADC1_IN0 00054 ADC2->CR2 |= ADC_CR2_ADON;//0x00000001; // ADC2 ON 00055 ADC2->SQR3 = 0x0000000C; // use PC_2 as input - ADC2_IN11 00056 ADC3->CR2 |= ADC_CR2_ADON; // ADC3 ON 00057 ADC3->SQR3 = 0x00000000; // use PA_0, - ADC3_IN0 00058 GPIOC->MODER |= 0x0000000f; // Alternate function, PC_0, PC_1 are analog inputs 00059 GPIOA->MODER |= 0x3; // PA_0 as analog input 00060 00061 ADC1->SMPR1 |= 0x1; // 15 cycles on CH_10, 0b 001 00062 ADC2->SMPR1 |= 0x8; // 15 cycles on CH_11, 0b 0001 000 00063 ADC3->SMPR2 |= 0x1; // 15 cycles on CH_0, 0b 001; 00064 00065 00066 00067 } 00068 00069 void Init_DAC(void){ 00070 RCC->APB1ENR |= 0x20000000; // Enable clock for DAC 00071 DAC->CR |= 0x00000001; // DAC control reg, both channels ON 00072 GPIOA->MODER |= 0x00000300; // PA04 as analog output 00073 } 00074 00075 void Init_All_HW(GPIOStruct *gpio){ 00076 Init_PWM(gpio); 00077 Init_ADC(); 00078 gpio->led = new DigitalOut(LED); 00079 //Init_DAC(); 00080 00081 }
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