view Small_CPU/Src/uartProtocol_Sentinel.c @ 902:d4622533271d Evo_2_23

VPM table mode: Because of the model maths, usage of float data type and so on it may happen that the TTS decreases during ascent and continues calculation of the vpm. To keep the values stable the vpm table mode has been introduces. Instead of continously calculation of the stops the stop time is decreased if the diver is close to a deco stop. If the table is violated (e.g. by not doing gas change) the table will be updated to the new, longer runtime. The table will not be switch back to a shorter version in case e.g. the missed gas change is performed
author Ideenmodellierer
date Wed, 02 Oct 2024 22:18:19 +0200
parents 3e499569baf3
children
line wrap: on
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/**
  ******************************************************************************
  * @file    uartProtocol_Co2.c
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    15-Jan-2024
  * @brief   Interface functionality to read data from Sentinel rebreather
  *
  @verbatim


  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2024 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/

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


#ifdef ENABLE_SENTINEL_MODE
static uint8_t SentinelConnected = 0;						/* Binary indicator if a sensor is connected or not */
static receiveStateSentinel_t rxState = SENTRX_Ready;

void ConvertByteToHexString(uint8_t byte, char* str)
{
	uint8_t worker = 0;
	uint8_t digit = 0;
	uint8_t digitCnt = 1;

	worker = byte;
	while((worker!=0) && (digitCnt != 255))
	{
		digit = worker % 16;
		if( digit < 10)
		{
			digit += '0';
		}
		else
		{
			digit += 'A' - 10;
		}
		str[digitCnt--]= digit;
		worker = worker / 16;
	}
}

void uartSentinel_Control(void)
{
	uint8_t activeSensor = externalInterface_GetActiveUartSensor();
	uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);

	if(localComState == UART_SENTINEL_INIT)
	{
		SentinelConnected = 0;
		UART_StartDMA_Receiption();
		localComState = UART_SENTINEL_IDLE;
	}
	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
}

void uartSentinel_ProcessData(uint8_t data)
{
	static uint8_t dataType = 0;
	static uint32_t dataValue[3];
	static uint8_t dataValueIdx = 0;

	static uint8_t checksum = 0;
	static char checksum_str[]="00";

	uint8_t activeSensor = externalInterface_GetActiveUartSensor();
	uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);

	switch(rxState)
	{
			case SENTRX_Ready:	if((data >= 'a') && (data <= 'z'))
							{
								rxState = SENTRX_DetectStart;
								checksum = 0;
							}
					break;

			case SENTRX_DetectStart: 	checksum += data;
									if(data == '1')
								 	{
								 		rxState = SENTRX_SelectData;
								 		dataType = 0xFF;

								 	}
									else
									{
										rxState = SENTRX_Ready;
									}
					break;

			case SENTRX_SelectData:		checksum += data;
									switch(data)
									{
										case 'T':	dataType = data;
											break;
										case '0': 	if(dataType != 0xff)
													{
														rxState = SENTRX_Data0;
														dataValueIdx = 0;
														dataValue[0] = 0;

													}
													else
													{
														rxState = SENTRX_Ready;
													}
											break;
										default:	rxState = SENTRX_Ready;
									}
					break;

			case SENTRX_Data0:
			case SENTRX_Data1:
			case SENTRX_Data2:
			case SENTRX_Data4:
			case SENTRX_Data5:
			case SENTRX_Data6:
			case SENTRX_Data8:
			case SENTRX_Data9:
			case SENTRX_Data10: checksum += data;
							if((data >= '0') && (data <= '9'))
							{
								dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (data - '0');
								rxState++;
							}
							else
							{
								rxState = SENTRX_Ready;
							}
					break;

			case SENTRX_Data3:
			case SENTRX_Data7:	checksum += data;
							if(data == '0')
							{
								rxState++;
								dataValueIdx++;
								dataValue[dataValueIdx] = 0;
							}
							else
							{
								rxState = SENTRX_Ready;
							}
					break;
			case SENTRX_Data11: rxState = SENTRX_DataComplete;
							ConvertByteToHexString(checksum,checksum_str);
							if(data == checksum_str[0])
							{
								rxState = SENTRX_DataComplete;
							}
							else
							{
								rxState = SENTRX_Ready;
							}

				break;

			case SENTRX_DataComplete:	if(data == checksum_str[1])
									{
										setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0));
										setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0));
										setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0));
										SentinelConnected = 1;
										localComState = UART_SENTINEL_OPERATING;
									}
									rxState = SENTRX_Ready;
				break;


			default:				rxState = SENTRX_Ready;
				break;

	}
	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
}

uint8_t uartSentinel_isSensorConnected()
{
	return SentinelConnected;
}

#endif