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with hardware oversampling

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This commit is contained in:
Noah Piqué
2021-11-17 11:35:41 +01:00
parent e15e692e89
commit 04d2bab659
10 changed files with 42 additions and 14 deletions
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12
Core/Drivers/ANPI_AnalogPortsIn.c
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@ -38,6 +38,7 @@
// Toolbox
#include "../Toolbox/UTIL_Utility.h"
#include "DIPO_DigitalPorts.h"
// include STM32 drivers
#include "stm32l4xx_hal.h"
@ -49,11 +50,11 @@
// Description: Definition of local constants (visible by this module only).
//=================================================================================================
#define ADC_RES (4096) // ADC resolution: 12 bits
#define ADC_RES (4096) // ADC resolution: 12 bits
#define NR_OF_ADCS 5 // number of internal adc channels
// definitions of internal adc
#define INT_ADC_REF_HI (3.28f) // HI int. reference voltage for conversion
#define INT_ADC_REF_HI (3.3f) // HI int. reference voltage for conversion
#define INT_ADC_REF_LO (0.0f) // LO int. reference voltage for conversion
#define INT_ADC_REF (INT_ADC_REF_HI-INT_ADC_REF_LO)// int. reference voltage for conversion
@ -269,6 +270,8 @@ VOID ANPI_vTask( PVOID arg )
{
u32Flags = osEventFlagsWait( m_pstEventID, ANPI_FLAGS_ALL, osFlagsWaitAny, osWaitForever );
DIPO_vSetOutput(DIPO_eLED);
if( u32Flags & ANPI_ADC_FULL_COMPLETE )
{
u16Offset = BUFFER_HALF_SIZE;
@ -288,6 +291,7 @@ VOID ANPI_vTask( PVOID arg )
for(U16 u16Cnt = 0; u16Cnt < BUFFER_HALF_SIZE; u16Cnt++ )
{
m_au32ADCRawData[ u16Cnt % NR_OF_ADCS ] += m_au16ADCDataBuffer[eADC1][u16Cnt + u16Offset];
//m_au32ADCRawData[ u16Cnt % NR_OF_ADCS ] = m_au16ADCDataBuffer[eADC1][u16Cnt + u16Offset];
}
// ... multiply by the conversion factor and add the offset
@ -297,9 +301,12 @@ VOID ANPI_vTask( PVOID arg )
{
m_aflValues[u16Cnt] = ((((FLOAT)m_au32ADCRawData[u16Cnt] / (FLOAT)ANPI_OVERSAMPLING_FACTOR * OFFSET) - (FLOAT)m_aflOffset1[u16Cnt] ) *
(FLOAT)m_aflConversionFactor[u16Cnt]) - (FLOAT)m_aflOffset2[u16Cnt];
//m_aflValues[u16Cnt] = (FLOAT)m_au32ADCRawData[u16Cnt];
}
osMutexRelease( m_pstMutexID ); // release mutex
DIPO_vResetOutput(DIPO_eLED);
}
}
@ -323,6 +330,7 @@ void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc)
{
osEventFlagsSet( m_pstEventID, ANPI_ADC_HALF_COMPLETE );
}
//-------------------------------------------------------------------------------------------------

5
Core/Drivers/ANPI_AnalogPortsIn.h
View File

@ -7,7 +7,7 @@
//-------------------------------------------------------------------------------------------------
//
// Project: Peltier Controller V2
// Author: Noah Piqu<71> (noah.pique@psi.ch)
// Author: Noah Piqu<71> (noah.pique@psi.ch)
//
//-------------------------------------------------------------------------------------------------
//
@ -41,10 +41,11 @@ extern "C" {
//=================================================================================================
// attention: perhaps you have to change the ADC sample time in ANPI_AnalogPortsIn.c
//#define ANPI_OVERSAMPLING_FACTOR 64
#define ANPI_OVERSAMPLING_FACTOR 64
#if( ANPI_OVERSAMPLING_FACTOR % 2 != 0 )
#error "ANPI_OVERSAMPLING_FACTOR must be power of 2!"
//#error "ANPI_OVERSAMPLING_FACTOR must be power of 2!"
#endif
//=================================================================================================

2
Core/Drivers/ANPO_AnalogPortsOut.c
View File

@ -159,7 +159,7 @@ BOOL ANPO_boSetVoltage( FLOAT Voltage ){
U32 u32ConvertVoltagetoRaw( FLOAT Voltage ){
U32 RawData;
RawData = Voltage * 4095 / 3.28;
RawData = Voltage * 4095 / 3.3;
return RawData;
}

2
Core/Drivers/TEMP_Temperature.c
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@ -66,7 +66,7 @@
#define RTD_A 3.9083e-3
#define RTD_B -5.775e-7
#define R_REF 3900
#define R_REF 4000
#define R_NOMINAL 1000
//=================================================================================================