reflow-oven-control-sw/stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h

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/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SAFETY_ADC_HWCFG_H__
#define __SAFETY_ADC_HWCFG_H__
/**
* @file safety-adc-hwcfg.h
* @brief Safety ADC configuration settings
*/
#include <stm32/stm32f4xx.h>
/**
* @brief Peripheral to use as safety ADC.
* @note This must be ADC1, because it is the only ADC with access to the internal temperature sensor
*/
#define SAFETY_ADC_ADC_PERIPHERAL ADC1
/**
* @brief Clock enable mask in RCC->APB2ENR to enable the #SAFETY_ADC_ADC_PERIPHERAL
*/
#define SAFETY_ADC_ADC_RCC_MASK RCC_APB2ENR_ADC1EN
/**
* @brief ADC channel number of the internal temperature sensor
*/
#define TEMP_CHANNEL_NUM (16)
/**
* @brief ADC channel number of the internal reference voltage
*/
#define INT_REF_CHANNEL_NUM (17)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM (15)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PIN (5)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT GPIOC
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT_RCC_MASK RCC_AHB1ENR_GPIOCEN
/**
* @brief Nominal value of the internal reference voltage.
*
* This is used to compare to the external reference voltage.
*/
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#define SAFETY_ADC_INT_REF_MV 1210.0f
/**
* @brief Nominal temperature in degrees celsius of the internal temperature sensor at which it reads
* #SAFETY_ADC_TEMP_NOM_MV millivolts.
*
*/
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#define SAFETY_ADC_TEMP_NOM 25.0f
/**
* @brief Nominal internal temperature sensor voltage at temperature #SAFETY_ADC_TEMP_NOM
*/
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#define SAFETY_ADC_TEMP_NOM_MV 760.0f
/**
* @brief Sensitivity of the internal temperature sensor in millivolts per Kelvin
*/
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#define SAFETY_ADC_TEMP_MV_SLOPE 2.5f
/**
* @brief Number of channels to handle for the SAFETY ADC.
* @note The maximum amount of channels is limited to 16
*/
#define SAFETY_ADC_NUM_OF_CHANNELS 12
/**
* @brief Channel numbers to sample with the SAFETY ADC
*
* - The first 4 values are the internal temperature sensor
* - The next 4 values are the internal reference voltage
*
* The values are samples 4 times each to allow averaging them to get
* more precise readings. Check the maximum value of #SAFETY_ADC_NUM_OF_CHANNELS
* when adding more channels.
* @warning Safety controller expects the current measurment list. If you change it, check @ref safety_controller_handle_safety_adc
*/
#define SAFETY_ADC_CHANNELS TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, \
INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, \
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, \
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM
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/* Check the channel count of the safety ADC */
#if SAFETY_ADC_NUM_OF_CHANNELS > 16 || SAFETY_ADC_NUM_OF_CHANNELS < 0
#error "Invlaid count of channels for safety ADC"
#endif
#endif /* __SAFETY_ADC_HWCFG_H__ */