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view Small_CPU/Inc/externalInterface.h @ 781:01b3eb9d55c3

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Update real multiplexer implementation: The final multiplexer provides 4 sensor connections instead of three supported by the prototype => A mupping functionality has been introduced to map the 4 possible mux addresses to the three visible O2 sensor slots. In addition the request cycle time is not depending on the number of sensors connected to make sure that all sensors are read within a defined time frame. The error reaction had to be updated to reset mux channels if one of the sensors fails to respond.
author Ideenmodellierer
date Mon, 29 May 2023 18:26:55 +0200
parents 0b5f45448eb6
children 19ab6f3ed52a
line wrap: on
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/**
  ******************************************************************************
  * @file    externalInterface.h
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    07-Nov-2020
  * @brief	 Interface functionality to proceed external analog signal via i2c connection
  *
  @verbatim
  ==============================================================================
                        ##### How to use #####
  ==============================================================================
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef EXTERNAL_INTERFACE_H
#define EXTERNAL_INTERFACE_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "configuration.h"


#define MAX_ADC_CHANNEL		(3u)		/* number of channels to be read */
#define MAX_MUX_CHANNEL		(4u)		/* number of channels provided by the UART multiplexer */
#define EXTERNAL_ADC_NO_DATA	0xFF

#define EXT33V_CONTROL_PIN				GPIO_PIN_7	/* PortC */

#define MIN_ADC_VOLTAGE_MV	(5.0f)		/* miminal voltage to rate an ADC channel as active */


 typedef enum
 {
    DETECTION_OFF = 0,		/* no detection requested */
	DETECTION_INIT,			/* prepare external interface for operation if not already activated */
	DETECTION_START,
	DETECTION_ANALOG1,		/* check ADC channels for connected sensors */
	DETECTION_ANALOG2,
	DETECTION_UARTMUX,		/* check if a uart multiplexer is present */
	DETECTION_DIGO2_0,		/* check UART channel for connected DigO2 sensor */
	DETECTION_DIGO2_1,
	DETECTION_DIGO2_2,
	DETECTION_DIGO2_3,
#ifdef ENABLE_CO2_SUPPORT
	DETECTION_CO2,			/* check UART channel for connected CO2 sensor */
#endif
#ifdef ENABLE_SENTINEL_MODE
	DETECTION_SENTINEL,		/* check UART channel for connected Sentinel */
	DETECTION_SENTINEL2,
#endif
	DETECTION_DONE
 } externalInterfaceAutoDetect_t;




void externalInterface_Init(void);
void externalInterface_InitPower33(void);
void externalInterface_InitDatastruct(void);
uint8_t externalInterface_StartConversion(uint8_t channel);
uint8_t externalInterface_ReadAndSwitch();
float externalInterface_CalculateADCValue(uint8_t channel);
float getExternalInterfaceChannel(uint8_t channel);
uint8_t setExternalInterfaceChannel(uint8_t channel, float value);
void externalInterface_SwitchPower33(uint8_t state);
void externalInterface_SwitchADC(uint8_t state);
void externalInterface_SwitchUART(uint8_t protocol);
uint8_t externalInterface_isEnabledPower33(void);
uint8_t externalInterface_isEnabledADC(void);
uint8_t externalInterface_GetUARTProtocol();

void externalInterface_SetCO2Value(uint16_t CO2_ppm);
void externalInterface_SetCO2SignalStrength(uint16_t LED_qa);
uint16_t externalInterface_GetCO2Value(void);
uint16_t externalInterface_GetCO2SignalStrength(void);
void externalInterface_SetCO2State(uint16_t state);
uint16_t externalInterface_GetCO2State(void);
uint8_t externalInterface_GetSensorData(uint8_t sensorId, uint8_t* pDataStruct);
void externalInterface_SetSensorData(uint8_t dataId, uint8_t* pDataStruct);
void externalInface_SetSensorMap(uint8_t* pMap);
uint8_t* externalInterface_GetSensorMapPointer(uint8_t finalMap);
void externalInterface_AutodetectSensor(void);
void externalInterface_ExecuteCmd(uint16_t Cmd);

#endif /* EXTERNAL_INTERFACE_H */