High Speed Analog In STM32L152RET
HSAnalogIn.cpp
- Committer:
- jack1930
- Date:
- 2020-05-19
- Revision:
- 0:08cfedb7969f
File content as of revision 0:08cfedb7969f:
#include "HSAnalogIn.h" #define BDC_CR1_OVRIE 0 #define BDC_CR1_RES 0b00 //12-bit (TCONV = 12 BDCgCLK cycles) #define BDC_CR1_AWDEN 0 //Analog watchdog disabled on regular channels #define BDC_CR1_JAWDEN 0 // Analog watchdog disabled on injected channels #define BDC_CR1_PDI 0 //The BDCg is powered up when waiting for a start event #define BDC_CR1_PDD 0 //The BDCg is powered up during the delay #define BDC_CR1_DISCNUM 0b000 // 1 channel #define BDC_CR1_JDISCEN 0 //Discontinuous mode on injected channels disabled #define BDC_CR1_DISCEN 0 //Discontinuous mode on regular channels disabled #define BDC_CR1_JAUTO 0 // Automatic injected group conversion disabled #define BDC_CR1_AWDSGL 0 //Analog watchdog enabled on all channels #define BDC_CR1_SCAN 0 //Scan mode disabled #define BDC_CR1_JEOCIE 0 //JEOC interrupt disabled #define BDC_CR1_AWDIE 0 // Analog watchdog interrupt disabled #define BDC_CR1_EOCIE 0 //EOC interrupt disabled #define BDC_CR1_AWDCH 0b00000 //BDCg analog input BDC_IN0 #define BDC_CR2_SWSTART 0 #define BDC_CR2_EXTEN 0b00 #define BDC_CR2_EXTSEL 0b0000 #define BDC_CR2_JSWSTART 0 #define BDC_CR2_JEXTEN 0b00 #define BDC_CR2_JEXTSEL 0b0000 #define BDC_CR2_ALIGN 1 #define BDC_CR2_EOCS 0 //EOC set at End of each conversion #define BDC_CR2_DDS 0 //No DMA request #define BDC_CR2_DMA 0 //DMA disabled #define BDC_CR2_DELS 0b001 //Until the converted data have been read (DR read or EOC=0 for regular conversions) #define BDC_CR2_BDC_CFG 0 //Bank A selected for channels BDCgg_IN0..31 #define BDC_CR2_CONT 0 // Single conversion mode #define BDC_CR2_ADON 1 // Enable BDCgg: conversions can start as soon as a start event (hardware or software) is received. HSAnalogIn::HSAnalogIn(int Pin) { //Analog init myPin=Pin; RCC->APB2ENR|=(1<<9); RCC->AHBENR|=0b111; RCC->CR|=1; //HSI On while ((RCC->CR&0b10)==0); ADC1->CR1= (BDC_CR1_OVRIE<<26)+(BDC_CR1_RES<<24)+(BDC_CR1_AWDEN<<23)+(BDC_CR1_JAWDEN<<22)+(BDC_CR1_PDI<<17)+(BDC_CR1_PDD<<16)+(BDC_CR1_DISCNUM<<13)+(BDC_CR1_JDISCEN<<12)+(BDC_CR1_DISCEN<<11)+(BDC_CR1_JAUTO<<10)+(BDC_CR1_AWDSGL<<9)+(BDC_CR1_SCAN<<8)+(BDC_CR1_JEOCIE<<7)+(BDC_CR1_AWDIE<<6)+(BDC_CR1_EOCIE<<5)+(BDC_CR1_AWDCH); ADC1->CR2=(BDC_CR2_SWSTART<<30)+(BDC_CR2_EXTEN<<28)+(BDC_CR2_EXTSEL<<24)+(BDC_CR2_JSWSTART<<22)+(BDC_CR2_JEXTEN<<20)+(BDC_CR2_JEXTSEL<<16)+(BDC_CR2_ALIGN<<11)+(BDC_CR2_EOCS<<10)+(BDC_CR2_DDS<<9)+(BDC_CR2_DMA<<8)+(BDC_CR2_DELS<<4)+(BDC_CR2_BDC_CFG<<2)+(BDC_CR2_CONT<<1)+(BDC_CR2_ADON); switch ((int)Pin) //0-15 PA, 16-31 PB, 32-47 PC { case 0: BDCin=0; GPIOA->MODER|=0b11; break;//PA_0 .. PA_7 case 1: BDCin=1; GPIOA->MODER|=0b11<<2; break; case 2: BDCin=2; GPIOA->MODER|=0b11<<4; break; case 3: BDCin=3; GPIOA->MODER|=0b11<<6; break; case 4: BDCin=4; GPIOA->MODER|=0b11<<8; break; case 5: BDCin=5; GPIOA->MODER|=0b11<<10; break; case 6: BDCin=6; GPIOA->MODER|=0b11<<12; break; case 7: BDCin=7; GPIOA->MODER|=0b11<<14; break; case 16: //PB_0 BDCin=8; GPIOB->MODER|=0b11; break; case 17: //PB_1 BDCin=9; GPIOB->MODER|=0b11<<2; break; case 18: //PB_2 BDCin=0; GPIOB->MODER|=0b11<<4; gruppe=1; break; case 28: //PB_12 BDCin=18; GPIOB->MODER|=0b11<<24; break; case 29: //PB_13 BDCin=19; GPIOB->MODER|=0b11<<26; break; case 30: //PB_14 BDCin=20; GPIOB->MODER|=0b11<<28; break; case 31: //PB_15 BDCin=21; GPIOB->MODER|=0b11<<30; break; case 32: //PC_0 BDCin=10; GPIOC->MODER|=0b11; break; case 33: //PC_1 BDCin=11; GPIOC->MODER|=0b11<<2; break; case 34: //PC_2 BDCin=12; GPIOC->MODER|=0b11<<4; break; case 35: //PC_3 BDCin=13; GPIOC->MODER|=0b11<<6; break; case 36: //PC_4 BDCin=14; GPIOC->MODER|=0b11<<8; break; case 37: //PC_5 BDCin=15; GPIOC->MODER|=0b11<<10; break; }; }; float HSAnalogIn::read() { /* RCC->APB2ENR|=(1<<9); RCC->AHBENR|=0b111; RCC->CR|=1; //HSI On while ((RCC->CR&0b10)==0); ADC1->CR1= (BDC_CR1_OVRIE<<26)+(BDC_CR1_RES<<24)+(BDC_CR1_AWDEN<<23)+(BDC_CR1_JAWDEN<<22)+(BDC_CR1_PDI<<17)+(BDC_CR1_PDD<<16)+(BDC_CR1_DISCNUM<<13)+(BDC_CR1_JDISCEN<<12)+(BDC_CR1_DISCEN<<11)+(BDC_CR1_JAUTO<<10)+(BDC_CR1_AWDSGL<<9)+(BDC_CR1_SCAN<<8)+(BDC_CR1_JEOCIE<<7)+(BDC_CR1_AWDIE<<6)+(BDC_CR1_EOCIE<<5)+(BDC_CR1_AWDCH); ADC1->CR2=(BDC_CR2_SWSTART<<30)+(BDC_CR2_EXTEN<<28)+(BDC_CR2_EXTSEL<<24)+(BDC_CR2_JSWSTART<<22)+(BDC_CR2_JEXTEN<<20)+(BDC_CR2_JEXTSEL<<16)+(BDC_CR2_ALIGN<<11)+(BDC_CR2_EOCS<<10)+(BDC_CR2_DDS<<9)+(BDC_CR2_DMA<<8)+(BDC_CR2_DELS<<4)+(BDC_CR2_BDC_CFG<<2)+(BDC_CR2_CONT<<1)+(BDC_CR2_ADON); switch ((int)myPin) //0-15 PA, 16-31 PB, 32-47 PC { case 0: BDCin=0; GPIOA->MODER|=0b11; break;//PA_0 .. PA_7 case 1: BDCin=1; GPIOA->MODER|=0b11<<2; break; case 2: BDCin=2; GPIOA->MODER|=0b11<<4; break; case 3: BDCin=3; GPIOA->MODER|=0b11<<6; break; case 4: BDCin=4; GPIOA->MODER|=0b11<<8; break; case 5: BDCin=5; GPIOA->MODER|=0b11<<10; break; case 6: BDCin=6; GPIOA->MODER|=0b11<<12; break; case 7: BDCin=7; GPIOA->MODER|=0b11<<14; break; case 16: //PB_0 BDCin=8; GPIOB->MODER|=0b11; break; case 17: //PB_1 BDCin=9; GPIOB->MODER|=0b11<<2; break; case 18: //PB_2 BDCin=0; GPIOB->MODER|=0b11<<4; gruppe=1; break; case 28: //PB_12 BDCin=18; GPIOB->MODER|=0b11<<24; break; case 29: //PB_13 BDCin=19; GPIOB->MODER|=0b11<<26; break; case 30: //PB_14 BDCin=20; GPIOB->MODER|=0b11<<28; break; case 31: //PB_15 BDCin=21; GPIOB->MODER|=0b11<<30; break; case 32: //PC_0 BDCin=10; GPIOC->MODER|=0b11; break; case 33: //PC_1 BDCin=11; GPIOC->MODER|=0b11<<2; break; case 34: //PC_2 BDCin=12; GPIOC->MODER|=0b11<<4; break; case 35: //PC_3 BDCin=13; GPIOC->MODER|=0b11<<6; break; case 36: //PC_4 BDCin=14; GPIOC->MODER|=0b11<<8; break; case 37: //PC_5 BDCin=15; GPIOC->MODER|=0b11<<10; break; }; */ ADC1->SQR5=BDCin; if (gruppe==1) ADC1->CR2|= (1<<2); //gruppe else ADC1->CR2&=~(1<<2); ADC1->CR2|=(1<<30); //SWStart while ((ADC1->SR & 0b10)==0); //warte(1000); return (float)ADC1->DR/65535; }; /** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF] * * @returns * 16-bit unsigned short representing the current input voltage, normalized to a 16-bit value */ unsigned short HSAnalogIn::read_u16() { ADC1->SQR5=BDCin; if (gruppe==1) ADC1->CR2|= (1<<2); //gruppe else ADC1->CR2&=~(1<<2); ADC1->CR2|=(1<<30); //SWStart while ((ADC1->SR & 0b10)==0); return (unsigned short)ADC1->DR; };