# HG changeset patch
# User Ideenmodellierer
# Date 1730644984 -3600
# Node ID c0553dd706084b909c54ba57b004ad41e1897344
# Parent  f72613a152dd4851f2413a631b09b433fd80b73f
GNSS support for external UART interface:
An ubox gps module may now be connected to the external UART. Per default the functionality is disabled using the compile switch ENABLE_GNSS_SUPPORT

diff -r f72613a152dd -r c0553dd70608 Small_CPU/Inc/uartProtocol_GNSS.h
--- a/Small_CPU/Inc/uartProtocol_GNSS.h	Sun Nov 03 15:40:55 2024 +0100
+++ b/Small_CPU/Inc/uartProtocol_GNSS.h	Sun Nov 03 15:43:04 2024 +0100
@@ -33,23 +33,47 @@
 
  typedef enum
   {
-	UART_GNSS_INIT = 0,			/* Default Status for every sensor type */
-	UART_GNSS_LOAD,				/* Load modul configuration */
-	UART_GNSS_GET_ID,			/* get unique module ID */
-	UART_GNSS_IDLE,				/* sensor detected and no communication pending */
-	UART_GNSS_ERROR,
-  	UART_GNSS_OPERATING,		/* normal operation => cyclic request of PVT data */
+		UART_GNSS_INIT = 0,		/* Default Status for every sensor type */
+		UART_GNSS_IDLE,			/* sensor detected and no communication pending */
+		UART_GNSS_ERROR,		/* Error message received from sensor */
+		UART_GNSS_WARMUP = 10,
+		UART_GNSS_LOADCONF_0,
+		UART_GNSS_LOADCONF_1,
+		UART_GNSS_LOADCONF_2,
+		UART_GNSS_GET_PVT,
   } uartGnssStatus_t;
 
   typedef enum
   {
   	GNSSRX_READY = 0,			/* Initial state */
-	GNSSRX_RECEIVING,			/* Pending data receiption */
+	GNSSRX_DETECT_HEADER_0,
+	GNSSRX_DETECT_HEADER_1,
+	GNSSRX_DETECT_HEADER_2,
+	GNSSRX_DETECT_HEADER_3,
+	GNSSRX_DETECT_ACK_0,
+	GNSSRX_DETECT_ACK_1,
+	GNSSRX_DETECT_ACK_2,
+	GNSSRX_DETECT_ACK_3,
+	GNSSRX_READ_NAV_DATA,
+	GNSSRX_READ_PVT_DATA,
+	GNSSRX_READ_POSLLH_DATA
   } receiveStateGnss_t;
 
 
+  typedef enum
+  {
+  	GNSSCMD_LOADCONF_0 = 0,
+	GNSSCMD_LOADCONF_1,
+	GNSSCMD_LOADCONF_2,
+	GNSSCMD_GET_NAV_DATA,
+	GNSSCMD_GET_PVT_DATA,
+	GNSSCMD_GET_POSLLH_DATA
+  } gnssSensorCmd_t;
+
+
 void uartGnss_Control(void);
-void uartGnss_ProcessData(void);
-uint8_t uartSentinel_isSensorConnected();
+void uartGnss_ProcessData(uint8_t data);
+uint8_t uartGnss_isSensorConnected();
+void uartGnss_SendCmd(uint8_t GnssCmd);
 
 #endif /* UART_PROTOCOL_GNSS_H */
diff -r f72613a152dd -r c0553dd70608 Small_CPU/Src/GNSS.c
--- a/Small_CPU/Src/GNSS.c	Sun Nov 03 15:40:55 2024 +0100
+++ b/Small_CPU/Src/GNSS.c	Sun Nov 03 15:43:04 2024 +0100
@@ -171,6 +171,9 @@
  * @param GNSS Pointer to main GNSS structure.
  */
 void GNSS_ParsePVTData(GNSS_StateHandle *GNSS) {
+
+	static float searchCnt = 1.0;
+
 	uShort.bytes[0] = GNSS_Handle.uartWorkingBuffer[10];
 	GNSS->yearBytes[0]=GNSS_Handle.uartWorkingBuffer[10];
 	uShort.bytes[1] = GNSS_Handle.uartWorkingBuffer[11];
@@ -226,6 +229,11 @@
 		iLong.bytes[var] = GNSS_Handle.uartWorkingBuffer[var + 70];
 	}
 	GNSS->headMot = iLong.iLong * 1e-5; // todo I'm not sure this good options.
+
+	if((GNSS->fLat == 0.0) && (GNSS->fLon == 0.0))
+	{
+		GNSS->fLat = searchCnt++;
+	}
 }
 
 /*!
diff -r f72613a152dd -r c0553dd70608 Small_CPU/Src/scheduler.c
--- a/Small_CPU/Src/scheduler.c	Sun Nov 03 15:40:55 2024 +0100
+++ b/Small_CPU/Src/scheduler.c	Sun Nov 03 15:43:04 2024 +0100
@@ -882,7 +882,9 @@
 			uartGnss_ProcessData();
 			uartGnss_Control();
 #endif
+#ifdef ENABLE_GNSS_SUPPORT
 			copyGNSSdata();
+#endif
 			Scheduler.counterAmbientLight100msec++;
 		}
 
@@ -1745,19 +1747,8 @@
 
 void copyGNSSdata(void)
 {
-#ifdef ENABLE_GNSS
 	global.dataSendToMaster.data[0].fLat = GNSS_Handle.fLat;
 	global.dataSendToMaster.data[0].fLon = GNSS_Handle.fLon;
-#else
-	static float tmpLon = 0.0;
-	static float tmpLat= 100.0;
-	global.dataSendToMaster.data[0].fLat = tmpLat;
-	global.dataSendToMaster.data[0].fLon = tmpLon;
-	tmpLon += 0.15;
-	if(tmpLon > 360.0) tmpLon = 0.0;
-	tmpLat += 0.33;
-	if(tmpLat > 360.0) tmpLat = 0.0;
-#endif
 }
 
 
diff -r f72613a152dd -r c0553dd70608 Small_CPU/Src/uartProtocol_Co2.c
--- a/Small_CPU/Src/uartProtocol_Co2.c	Sun Nov 03 15:40:55 2024 +0100
+++ b/Small_CPU/Src/uartProtocol_Co2.c	Sun Nov 03 15:43:04 2024 +0100
@@ -84,6 +84,7 @@
 	{
 		CO2Connected = 0;
 		externalInterface_SetCO2Scale(0.0);
+		UART_clearRxBuffer();
 		UART_StartDMA_Receiption();
 		localComState = UART_CO2_SETUP;
 	}
diff -r f72613a152dd -r c0553dd70608 Small_CPU/Src/uartProtocol_GNSS.c
--- a/Small_CPU/Src/uartProtocol_GNSS.c	Sun Nov 03 15:40:55 2024 +0100
+++ b/Small_CPU/Src/uartProtocol_GNSS.c	Sun Nov 03 15:43:04 2024 +0100
@@ -24,11 +24,17 @@
 #include <uartProtocol_GNSS.h>
 #include "uart.h"
 #include "GNSS.h"
+#include "configuration.h"
+#include "externalInterface.h"
 
-#ifdef ENABLE_GNSS
+#if defined ENABLE_GNSS || defined ENABLE_GNSS_SUPPORT
 
-static uartGnssStatus_t gnssOpState = UART_GNSS_INIT;
 static receiveStateGnss_t rxState = GNSSRX_READY;
+static uint8_t GnssConnected = 0;						/* Binary indicator if a sensor is connected or not */
+
+static uint8_t writeIndex = 0;
+
+static uint8_t dataToRead = 0;
 
 void ConvertByteToHexString(uint8_t byte, char* str)
 {
@@ -53,61 +59,181 @@
 	}
 }
 
+
+void uartGnss_SendCmd(uint8_t GnssCmd)
+{
+	uint8_t* pData;
+	uint8_t txLength = 0;
+
+	switch (GnssCmd)
+	{
+		case GNSSCMD_LOADCONF_0:	pData = configUBX;
+									txLength = sizeof(configUBX) / sizeof(uint8_t);
+				break;
+		case GNSSCMD_LOADCONF_1:	pData = setNMEA410;
+									txLength = sizeof(setNMEA410) / sizeof(uint8_t);
+				break;
+		case GNSSCMD_LOADCONF_2:	pData = setGNSS;
+									txLength = sizeof(setGNSS) / sizeof(uint8_t);
+				break;
+		case GNSSCMD_GET_PVT_DATA:	pData = getPVTData;
+									txLength = sizeof(getPVTData) / sizeof(uint8_t);
+			break;
+		case GNSSCMD_GET_NAV_DATA:	pData = getNavigatorData;
+									txLength = sizeof(getNavigatorData) / sizeof(uint8_t);
+			break;
+
+		default:
+			break;
+	}
+	if(txLength != 0)
+	{
+		UART_SendCmdUbx(pData, txLength);
+	}
+}
+
 void uartGnss_Control(void)
 {
-	static uint32_t delayStartTick = 0;
+	static uint32_t warmupTick = 0;
 
-	uint32_t tick = HAL_GetTick();
+	uint8_t activeSensor = externalInterface_GetActiveUartSensor();
+	uartGnssStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
 
-	switch (gnssOpState)
+	switch (localComState)
 	{
-		case UART_GNSS_INIT:	delayStartTick = tick;
-								gnssOpState = UART_GNSS_LOAD;
+		case UART_GNSS_INIT:  		localComState = UART_GNSS_WARMUP;
+									warmupTick =  HAL_GetTick();
+									UART_clearRxBuffer();
 				break;
-		case UART_GNSS_LOAD:	if(time_elapsed_ms(delayStartTick,HAL_GetTick()) > 1000)
-								{
-									GNSS_LoadConfig(&GNSS_Handle);
-									gnssOpState = UART_GNSS_GET_ID;
-									delayStartTick = tick;
-								}
+		case UART_GNSS_WARMUP:		if(time_elapsed_ms(warmupTick,HAL_GetTick()) > 1000)
+									{
+										localComState = UART_GNSS_LOADCONF_0;
+									}
 				break;
-		case UART_GNSS_GET_ID:	if(time_elapsed_ms(delayStartTick,HAL_GetTick()) > 250)
-								{
-									GNSS_GetUniqID(&GNSS_Handle);
-									gnssOpState = UART_GNSS_IDLE;
-									rxState = GNSSRX_RECEIVING;
-									delayStartTick = tick;
-								}
+		case UART_GNSS_LOADCONF_0:	uartGnss_SendCmd(GNSSCMD_LOADCONF_0);
+									localComState = UART_GNSS_LOADCONF_1;
+									rxState = GNSSRX_DETECT_ACK_0;
+				break;
+		case UART_GNSS_LOADCONF_1:	uartGnss_SendCmd(GNSSCMD_LOADCONF_1);
+									localComState = UART_GNSS_LOADCONF_2;
+									rxState = GNSSRX_DETECT_ACK_0;
 				break;
-		case UART_GNSS_IDLE:	if(time_elapsed_ms(delayStartTick,HAL_GetTick()) > 1000)
-								{
-									GNSS_GetPVTData(&GNSS_Handle);
-									gnssOpState = UART_GNSS_OPERATING;
-									rxState = GNSSRX_RECEIVING;
-									delayStartTick = tick;
-								}
+		case UART_GNSS_LOADCONF_2:	uartGnss_SendCmd(GNSSCMD_LOADCONF_2);
+									localComState = UART_GNSS_IDLE;
+									rxState = GNSSRX_DETECT_ACK_0;
 				break;
-		case UART_GNSS_OPERATING: if(time_elapsed_ms(delayStartTick,HAL_GetTick()) > 1000)
-								{
-									gnssOpState = UART_GNSS_IDLE;	/* simple error handling => start next request */
-									rxState = GNSSRX_READY;
-								}
+		case UART_GNSS_IDLE:		uartGnss_SendCmd(GNSSCMD_GET_PVT_DATA);
+									localComState = UART_GNSS_GET_PVT;
+									rxState = GNSSRX_DETECT_HEADER_0;
 				break;
 		default:
 				break;
 	}
+
+	externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
+
 }
 
-void uartGnss_ProcessData(void)
+void uartGnss_ProcessData(uint8_t data)
 {
-	if(rxState == GNSSRX_RECEIVING)
+	uint8_t activeSensor = externalInterface_GetActiveUartSensor();
+	GNSS_Handle.uartWorkingBuffer[writeIndex++] = data;
+	switch(rxState)
 	{
-		if(GNSS_ParseBuffer(&GNSS_Handle))
-		{
-			gnssOpState = UART_GNSS_IDLE;
-		}
+		case GNSSRX_DETECT_ACK_0:
+		case GNSSRX_DETECT_HEADER_0:	if(data == 0xB5)
+										{
+											writeIndex = 0;
+											memset(GNSS_Handle.uartWorkingBuffer,0, sizeof(GNSS_Handle.uartWorkingBuffer));
+											GNSS_Handle.uartWorkingBuffer[writeIndex++] = data;
+											rxState++;
+										}
+			break;
+		case GNSSRX_DETECT_ACK_1:
+		case GNSSRX_DETECT_HEADER_1:	if(data == 0x62)
+			 	 	 	 	 	 	 	{
+											rxState++;
+			 	 	 	 	 	 	 	}
+										else
+										{
+											rxState = GNSSRX_DETECT_HEADER_0;
+										}
+			break;
+		case GNSSRX_DETECT_ACK_2:		if(data == 0x05)
+										{
+											rxState++;
+										}
+										else
+										{
+											rxState = GNSSRX_DETECT_HEADER_0;
+										}
+			break;
+		case GNSSRX_DETECT_ACK_3:		if((data == 0x01) || (data == 0x00))
+										{
+											GnssConnected = 1;
+											rxState = GNSSRX_READY;
+										}
+										else
+										{
+											rxState = GNSSRX_DETECT_HEADER_0;
+										}
+			break;
+		case GNSSRX_DETECT_HEADER_2:	if(data == 0x01)
+			 	 	 	 	 	 	 	{
+											rxState++;
+			 	 	 	 	 	 	 	}
+										else
+										{
+											rxState = GNSSRX_DETECT_HEADER_0;
+										}
+			break;
+		case GNSSRX_DETECT_HEADER_3:
+										switch(data)
+										{
+											case 0x21: rxState = GNSSRX_READ_NAV_DATA;
+														dataToRead = 20;
+												break;
+											case 0x07:	rxState = GNSSRX_READ_PVT_DATA;
+														dataToRead = 92;
+												break;
+											case 0x02:  rxState = GNSSRX_READ_POSLLH_DATA;
+												break;
+											default: 	rxState = GNSSRX_DETECT_HEADER_0;
+												break;
+										}
+			break;
+			case GNSSRX_READ_NAV_DATA:
+			case GNSSRX_READ_PVT_DATA:
+			case GNSSRX_READ_POSLLH_DATA:		if(dataToRead > 0)
+												{
+													dataToRead--;
+												}
+												else
+												{
+														switch(rxState)
+														{
+															case GNSSRX_READ_NAV_DATA: GNSS_ParseNavigatorData(&GNSS_Handle);
+																break;
+															case GNSSRX_READ_PVT_DATA:	GNSS_ParsePVTData(&GNSS_Handle);
+																break;
+															case GNSSRX_READ_POSLLH_DATA:  GNSS_ParsePOSLLHData(&GNSS_Handle);
+																break;
+															default: 	rxState = GNSSRX_DETECT_HEADER_0;
+																break;
+														}
+														rxState = GNSSRX_DETECT_HEADER_0;
+														externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,UART_GNSS_IDLE);
+												}
+				break;
+		default:	rxState = GNSSRX_READY;
+			break;
 	}
 }
 
+uint8_t uartGnss_isSensorConnected()
+{
+	return GnssConnected;
+}
+
 #endif