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view Small_CPU/Src/uartProtocol_O2.c @ 926:875933272056 Evo_2_23 tip

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Bugfix sensor de-/activation handling: In the previous version a CO2 sensor could cause a not used analog channel to be displayed. Rootcause was that all sensor type, not only o2 sensors, were used for o2 sensor deactivation evaluation. The deactivation state is the criteria if a value is displayed or not. In the new version only o2 sensor type are used for handling of sensor de-/activation state. In addition the cursor will now be set to the first valid sensor entry in case sensor slot 0 is empty.
author Ideenmodellierer
date Thu, 14 Nov 2024 20:13:18 +0100
parents eb4109d7d1e9
children
line wrap: on
line source

/**
  ******************************************************************************
  * @file    uartProtocol_O2.c
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    16-Jun-2023
  * @brief   Interface functionality to external, UART based O2 sensors
  *
  @verbatim


  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2023 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/

#include <string.h>
#include "uart.h"
#include "uartProtocol_O2.h"
#include "externalInterface.h"


const  uint8_t errorStr[] = "#ERRO";
static uint32_t lastReceiveTick = 0;
static uartO2RxState_t rxState = O2RX_IDLE;
static uint8_t digO2Connected = 0;						/* Binary indicator if a sensor is connected or not */
static SSensorDataDiveO2 tmpSensorDataDiveO2;			/* intermediate storage for additional sensor data */

static uint8_t activeSensor = 0;
static uint8_t respondErrorDetected = 0;

void uartO2_InitData()
{
	  digO2Connected = 0;
}

void uartO2_SetupCmd(uint8_t O2State, uint8_t *cmdString, uint8_t *cmdLength)
{
	switch (O2State)
	{
		case UART_O2_CHECK:		*cmdLength = snprintf((char*)cmdString, 10, "#LOGO");
			break;
		case UART_O2_REQ_INFO: 	*cmdLength = snprintf((char*)cmdString, 10, "#VERS");
					break;
		case UART_O2_REQ_ID: 	*cmdLength = snprintf((char*)cmdString, 10, "#IDNR");
			break;
		case UART_O2_REQ_O2: 	*cmdLength = snprintf((char*)cmdString, 10, "#DOXY");
			break;
		case UART_O2_REQ_RAW:	*cmdLength = snprintf((char*)cmdString, 10, "#DRAW");
			break;
		default: *cmdLength = 0;
			break;
	}
	if(*cmdLength != 0)
	{
		cmdString[*cmdLength] = 0x0D;
		*cmdLength = *cmdLength + 1;
		cmdString[*cmdLength] = 0x0A;
		*cmdLength = *cmdLength + 1;
		cmdString[*cmdLength] = 0;
		*cmdLength = *cmdLength + 1;
	}
}

static uint8_t cmdLength = 0;
static uint8_t cmdString[10];

void uartO2_Control(void)
{
	static uint8_t lastComState = 0;
	static uint8_t lastActiveSensor = 0xFF;

	uint8_t activeSensor = externalInterface_GetActiveUartSensor();

	uartO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
	externalInterface_GetSensorData(activeSensor + EXT_INTERFACE_MUX_OFFSET, (uint8_t*)&tmpSensorDataDiveO2);


	if(lastActiveSensor != activeSensor)
	{
		lastActiveSensor = activeSensor;
		if(localComState != UART_O2_ERROR)
		{
			lastComState = localComState;
		}
		else
		{
			lastComState = UART_O2_IDLE;
		}
		if(localComState == UART_O2_CHECK)
		{
			localComState = UART_O2_IDLE;
		}
		UART_FlushRxBuffer();
	}

	if(localComState == UART_O2_INIT)
	{
		memset((char*) &tmpSensorDataDiveO2, 0, sizeof(tmpSensorDataDiveO2));
		externalInterface_SetSensorData(0xFF,(uint8_t*)&tmpSensorDataDiveO2);

		localComState = UART_O2_CHECK;
		lastComState = UART_O2_CHECK;
		UART_clearRxBuffer();
		uartO2_SetupCmd(localComState,cmdString,&cmdLength);
		UART_SendCmdString(cmdString);
		rxState = O2RX_CONFIRM;
		respondErrorDetected = 0;
		digO2Connected = 0;
	}
	else
	{
		if(localComState == UART_O2_ERROR)
		{
			localComState = lastComState;
		}
		lastComState = localComState;
		if(localComState == UART_O2_IDLE)							/* cyclic request of o2 value */
		{
			if((activeSensor != MAX_MUX_CHANNEL) && (tmpSensorDataDiveO2.sensorId == 0))
			{
				localComState = UART_O2_REQ_ID;
			}
			else
			{
				localComState = UART_O2_REQ_RAW;
			}
		}
		rxState = O2RX_CONFIRM;
		uartO2_SetupCmd(localComState,cmdString,&cmdLength);
		UART_SendCmdString(cmdString);
	}
	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
}

void uartO2_ProcessData(uint8_t data)
{
	static uint8_t cmdReadIndex = 0;
	static uint8_t errorReadIndex = 0;
	static char tmpRxBuf[30];
	static uint8_t tmpRxIdx = 0;

	uint32_t tmpO2 = 0;
	uint32_t tmpData = 0;

	uint32_t tick =  HAL_GetTick();

	uartO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);

	lastReceiveTick = tick;
	switch(rxState)
	{
		case O2RX_CONFIRM:	if(data == '#')
							{
								cmdReadIndex = 0;
								errorReadIndex = 0;
							}
							if(errorReadIndex < sizeof(errorStr)-1)
							{
								if(data == errorStr[errorReadIndex])
								{
									errorReadIndex++;
								}
								else
								{
									errorReadIndex = 0;
								}
							}
							else
							{
								respondErrorDetected = 1;
								errorReadIndex = 0;
								if(localComState != UART_O2_IDLE)
								{
									localComState = UART_O2_ERROR;
								}
							}
							if(data == cmdString[cmdReadIndex])
							{
								cmdReadIndex++;
								if(cmdReadIndex == cmdLength - 3)
								{
									errorReadIndex = 0;
									if((activeSensor == MAX_MUX_CHANNEL))
									{
										if(respondErrorDetected)
										{
											digO2Connected = 0;		/* the multiplexer mirrors the incoming message and does not generate an error information => no mux connected */
										}
										else
										{
											digO2Connected = 1;
										}
									}
									else							/* handle sensors which should respond with an error message after channel switch */
									{
										digO2Connected = 1;
									}
									tmpRxIdx = 0;
									memset((char*) tmpRxBuf, 0, sizeof(tmpRxBuf));
									cmdReadIndex = 0;
									switch (localComState)
									{
											case UART_O2_CHECK:	localComState = UART_O2_IDLE;
																rxState = O2RX_IDLE;
												break;
											case UART_O2_REQ_ID: rxState = O2RX_GETNR;
												break;
											case UART_O2_REQ_INFO: rxState = O2RX_GETTYPE;
												break;
											case UART_O2_REQ_RAW:
											case UART_O2_REQ_O2:	rxState = O2RX_GETO2;
												break;
											default:	localComState = UART_O2_IDLE;
														rxState = O2RX_IDLE;
													break;
									}
								}
							}
							else
							{
								cmdReadIndex = 0;
							}
				break;

			case O2RX_GETSTATUS:
			case O2RX_GETTEMP:
			case O2RX_GETTYPE:
			case O2RX_GETVERSION:
			case O2RX_GETCHANNEL:
			case O2RX_GETSUBSENSORS:
			case O2RX_GETO2:
			case O2RX_GETNR:
			case O2RX_GETDPHI:
			case O2RX_INTENSITY:
			case O2RX_AMBIENTLIGHT:
			case O2RX_PRESSURE:
			case O2RX_HUMIDITY:
								if(data != 0x0D)
								{
									if(data != ' ')		/* the following data entities are placed within the data stream => no need to store data at the end */
									{
										tmpRxBuf[tmpRxIdx++] = data;
									}
									else
									{
										if(tmpRxIdx != 0)
										{
											switch(rxState)
											{
												case O2RX_GETCHANNEL:	StringToInt(tmpRxBuf,&tmpData);
																		rxState = O2RX_GETVERSION;
														break;
												case O2RX_GETVERSION:	StringToInt(tmpRxBuf,&tmpData);
																		rxState = O2RX_GETSUBSENSORS;
														break;
												case O2RX_GETTYPE: 		StringToInt(tmpRxBuf,&tmpData);
																		rxState = O2RX_GETCHANNEL;
														break;

												case O2RX_GETO2: 		StringToInt(tmpRxBuf,&tmpO2);

																		setExternalInterfaceChannel(activeSensor + EXT_INTERFACE_MUX_OFFSET,(float)(tmpO2 / 10000.0));
																		rxState = O2RX_GETTEMP;
													break;
												case O2RX_GETTEMP:		StringToInt(tmpRxBuf,(uint32_t*)&tmpSensorDataDiveO2.temperature);
																		rxState = O2RX_GETSTATUS;
													break;
												case O2RX_GETSTATUS:	StringToInt(tmpRxBuf,&tmpSensorDataDiveO2.status);				/* raw data cycle */
																		rxState = O2RX_GETDPHI;
													break;
												case O2RX_GETDPHI:		/* ignored to save memory and most likly irrelevant for diver */
																		rxState = O2RX_INTENSITY;
																									break;
												case O2RX_INTENSITY:	StringToInt(tmpRxBuf,(uint32_t*)&tmpSensorDataDiveO2.intensity);				/* raw data cycle */
																		rxState = O2RX_AMBIENTLIGHT;
																									break;
												case O2RX_AMBIENTLIGHT:	StringToInt(tmpRxBuf,(uint32_t*)&tmpSensorDataDiveO2.ambient);				/* raw data cycle */
																		rxState = O2RX_PRESSURE;
																									break;
												case O2RX_PRESSURE:	StringToInt(tmpRxBuf,(uint32_t*)&tmpSensorDataDiveO2.pressure);					/* raw data cycle */
																		rxState = O2RX_HUMIDITY;
																									break;
												default:
													break;
											}
											memset((char*) tmpRxBuf, 0, tmpRxIdx);
											tmpRxIdx = 0;
										}
									}
								}
								else
								{							/* the following data items are the last of a sensor respond => store temporal data */
									switch (rxState)
									{
										case O2RX_GETSTATUS:		StringToInt(tmpRxBuf,&tmpSensorDataDiveO2.status);
																	externalInterface_SetSensorData(activeSensor + EXT_INTERFACE_MUX_OFFSET,(uint8_t*)&tmpSensorDataDiveO2);
																	localComState = UART_O2_IDLE;
																	rxState = O2RX_IDLE;
												break;
										case O2RX_GETSUBSENSORS:	StringToInt(tmpRxBuf,&tmpData);
										localComState = UART_O2_IDLE;
																	rxState = O2RX_IDLE;
												break;
										case O2RX_HUMIDITY:			StringToInt(tmpRxBuf,(uint32_t*)&tmpSensorDataDiveO2.humidity);				/* raw data cycle */
																	externalInterface_SetSensorData(activeSensor + EXT_INTERFACE_MUX_OFFSET,(uint8_t*)&tmpSensorDataDiveO2);
																	localComState = UART_O2_IDLE;
																	rxState = O2RX_IDLE;
												break;
										case  O2RX_GETNR: 			StringToUInt64((char*)tmpRxBuf,&tmpSensorDataDiveO2.sensorId);
																	externalInterface_SetSensorData(activeSensor + EXT_INTERFACE_MUX_OFFSET,(uint8_t*)&tmpSensorDataDiveO2);
																	localComState = UART_O2_IDLE;
																	rxState = O2RX_IDLE;
											break;
										default:		localComState = UART_O2_IDLE;
														rxState = O2RX_IDLE;
											break;
									}
								}
					break;
			default:				rxState = O2RX_IDLE;
				break;

	}
	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
}


uint8_t uartO2_isSensorConnected()
{
	return digO2Connected;
}

void uartO2_SetChannel(uint8_t channel)
{
	if(channel <= MAX_MUX_CHANNEL)
	{
		activeSensor = channel;
	}
}