/**+
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  ******************************************************************************+
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  * @file    uartProtocol_Co2.c+
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  * @author  heinrichs weikamp gmbh+
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  * @version V0.0.1+
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  * @date    15-Jan-2024+
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  * @brief   Interface functionality to read data from Sentinel rebreather+
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  *+
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  @verbatim+
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+
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+
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  @endverbatim+
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  ******************************************************************************+
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  * @attention+
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  *+
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  * <h2><center>&copy; COPYRIGHT(c) 2024 heinrichs weikamp</center></h2>+
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  *+
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  ******************************************************************************+
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  */+
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/* Includes ------------------------------------------------------------------*/+
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+
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#include <string.h>+
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#include <uartProtocol_Sentinel.h>+
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#include "uart.h"+
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#include "externalInterface.h"+
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+
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+
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#ifdef ENABLE_SENTINEL_MODE+
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static uint8_t SentinelConnected = 0;						/* Binary indicator if a sensor is connected or not */+
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static receiveStateSentinel_t rxState = SENTRX_Ready;+
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+
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extern sUartComCtrl Uart1Ctrl;+
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+
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void ConvertByteToHexString(uint8_t byte, char* str)+
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{+
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	uint8_t worker = 0;+
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	uint8_t digit = 0;+
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	uint8_t digitCnt = 1;+
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+
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	worker = byte;+
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	while((worker!=0) && (digitCnt != 255))+
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	{+
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		digit = worker % 16;+
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		if( digit < 10)+
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		{+
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			digit += '0';+
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		}+
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		else+
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		{+
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			digit += 'A' - 10;+
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		}+
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		str[digitCnt--]= digit;+
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		worker = worker / 16;+
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	}+
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}+
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+
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void uartSentinel_Control(void)+
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{+
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	uint8_t activeSensor = externalInterface_GetActiveUartSensor();+
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	uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);+
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+
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	if(localComState == UART_SENTINEL_INIT)+
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	{+
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		SentinelConnected = 0;+
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		UART_StartDMA_Receiption(&Uart1Ctrl);+
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		localComState = UART_SENTINEL_IDLE;+
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	}+
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	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);+
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}+
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+
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void uartSentinel_ProcessData(uint8_t data)+
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{+
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	static uint8_t dataType = 0;+
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	static uint32_t dataValue[3];+
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	static uint8_t dataValueIdx = 0;+
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+
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	static uint8_t checksum = 0;+
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	static char checksum_str[]="00";+
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+
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	uint8_t activeSensor = externalInterface_GetActiveUartSensor();+
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	uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);+
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+
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	switch(rxState)+
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	{+
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			case SENTRX_Ready:	if((data >= 'a') && (data <= 'z'))+
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							{+
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								rxState = SENTRX_DetectStart;+
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								checksum = 0;+
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							}+
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					break;+
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+
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			case SENTRX_DetectStart: 	checksum += data;+
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									if(data == '1')+
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								 	{+
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								 		rxState = SENTRX_SelectData;+
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								 		dataType = 0xFF;+
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+
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								 	}+
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									else+
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									{+
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										rxState = SENTRX_Ready;+
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									}+
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					break;+
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+
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			case SENTRX_SelectData:		checksum += data;+
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									switch(data)+
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									{+
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										case 'T':	dataType = data;+
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											break;+
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										case '0': 	if(dataType != 0xff)+
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													{+
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														rxState = SENTRX_Data0;+
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														dataValueIdx = 0;+
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														dataValue[0] = 0;+
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+
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													}+
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													else+
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													{+
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														rxState = SENTRX_Ready;+
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													}+
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											break;+
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										default:	rxState = SENTRX_Ready;+
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									}+
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					break;+
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+
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			case SENTRX_Data0:+
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			case SENTRX_Data1:+
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			case SENTRX_Data2:+
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			case SENTRX_Data4:+
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			case SENTRX_Data5:+
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			case SENTRX_Data6:+
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			case SENTRX_Data8:+
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			case SENTRX_Data9:+
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			case SENTRX_Data10: checksum += data;+
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							if((data >= '0') && (data <= '9'))+
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							{+
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								dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (data - '0');+
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								rxState++;+
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							}+
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							else+
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							{+
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								rxState = SENTRX_Ready;+
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							}+
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					break;+
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+
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			case SENTRX_Data3:+
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			case SENTRX_Data7:	checksum += data;+
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							if(data == '0')+
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							{+
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								rxState++;+
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								dataValueIdx++;+
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								dataValue[dataValueIdx] = 0;+
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							}+
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							else+
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							{+
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								rxState = SENTRX_Ready;+
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							}+
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					break;+
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			case SENTRX_Data11: rxState = SENTRX_DataComplete;+
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							ConvertByteToHexString(checksum,checksum_str);+
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							if(data == checksum_str[0])+
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							{+
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								rxState = SENTRX_DataComplete;+
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							}+
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							else+
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							{+
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								rxState = SENTRX_Ready;+
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							}+
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+
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				break;+
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+
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			case SENTRX_DataComplete:	if(data == checksum_str[1])+
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									{+
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										setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0));+
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										setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0));+
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										setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0));+
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										SentinelConnected = 1;+
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										localComState = UART_SENTINEL_OPERATING;+
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									}+
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									rxState = SENTRX_Ready;+
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				break;+
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+
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+
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			default:				rxState = SENTRX_Ready;+
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				break;+
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+
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	}+
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	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);+
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}+
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+
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uint8_t uartSentinel_isSensorConnected()+
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{+
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	return SentinelConnected;+
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}+
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+
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#endif+
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+
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