Upload of my development on my work computer. This includes some efforts to get serial working for the GPS (I think) and maybe some experimental transmitting test stuff? Anyway, mostly included here for completeness, and because I will not be doing PSDR development on this machine anymore.

Keychain/Gerbers/psdr_keychain.gbo

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Keychain/Gerbers/psdr_keychain.gto

@@ -0,0 +1,562 @@
+*
+*
+G04 PADS9.1 Build Number: 384028 generated Gerber (RS-274-X) file*
+G04 PC Version=2.1*
+*
+%IN "KeyChainDevBoard.pcb"*%
+*
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+G04 PC Aperture Table*
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+%ADD010C,0.001*%
+%ADD150C,0.01*%
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+G04 PC Circuitry*
+G04 Layer Name KeyChainDevBoard.pcb - circuitry*
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+X173245Y124063D02*
+Y121000D01*
+Y122750D02*
+X173427Y123406D01*
+X173791Y123844*
+X174155Y124063*
+X174155D02*
+X174700D01*
+X176518Y121438D02*
+X176336Y121219D01*
+X176518Y121000*
+X176700Y121219*
+X176518Y121438*
+X180518Y123406D02*
+X180155Y123844D01*
+X179791Y124063*
+X179791D02*
+X179245D01*
+X179245D02*
+X178882Y123844D01*
+X178518Y123406*
+X178336Y122750*
+Y122313*
+X178336D02*
+X178518Y121656D01*
+X178882Y121219*
+X179245Y121000*
+X179791*
+X180155Y121219*
+X180518Y121656*
+X183064Y124063D02*
+X182700Y123844D01*
+X182336Y123406*
+X182155Y122750*
+Y122313*
+X182155D02*
+X182336Y121656D01*
+X182700Y121219*
+X183064Y121000*
+X183609*
+X183973Y121219*
+X184336Y121656*
+X184518Y122313*
+X184518D02*
+Y122750D01*
+X184336Y123406*
+X183973Y123844*
+X183609Y124063*
+X183609D02*
+X183064D01*
+X186155D02*
+Y121000D01*
+Y123188D02*
+X186700Y123844D01*
+X187064Y124063*
+X187064D02*
+X187609D01*
+X187609D02*
+X187973Y123844D01*
+X188155Y123188*
+X188155D02*
+Y121000D01*
+Y123188D02*
+X188700Y123844D01*
+X189064Y124063*
+X189064D02*
+X189609D01*
+X189609D02*
+X189973Y123844D01*
+X190155Y123188*
+X190155D02*
+Y121000D01*
+X0Y0D02*
+M02*

Keychain/Gerbers/psdr_keychain.txt

@@ -0,0 +1,86 @@
+% M48 INCH,LZ
+T1C.014F095S300
+X011650Y011660
+X014690Y012300
+X016620Y011920
+X016700Y012880
+X017010Y010950
+X019110Y012750
+X020340Y011100
+X021610Y013600
+X019840Y013980
+X018920Y014520
+X018890Y014080
+X018800Y013070
+X018200Y014320
+X017800Y014810
+X017700Y013700
+X017620Y014430
+X017380Y013370
+X017250Y015330
+X017000Y014980
+X016860Y014320
+X016700Y013410
+X016390Y013740
+X016130Y013410
+X016060Y015320
+X015960Y013830
+X015760Y015020
+X015730Y014210
+X015540Y013810
+X014630Y014420
+X014190Y014640
+X013680Y013470
+X011340Y014840
+X010840Y016940
+X013430Y015860
+X015260Y016060
+X016070Y016930
+X016420Y016590
+X016820Y016580
+X016880Y015500
+X018830Y015600
+X019250Y015980
+X019710Y015950
+X021160Y016870
+T2C.03346F197S550
+X013700Y016500
+X020500Y012700
+T3C.03346F197S550
+X011763Y012216
+X011763Y014184
+T4C.037F197S550
+X010500Y010500
+X011500Y010500
+X012500Y010500
+X013500Y010500
+X014500Y010500
+X015500Y010500
+X016500Y010500
+X017500Y010500
+X018500Y010500
+X019500Y010500
+X020500Y010500
+X021500Y011500
+X022500Y012500
+X023500Y013500
+X023500Y017500
+X022500Y017500
+X021500Y017500
+X020500Y017500
+X019500Y017500
+X018500Y017500
+X017500Y017500
+X016500Y017500
+X015500Y017500
+X014500Y017500
+X013500Y017500
+X012500Y017500
+X011500Y017500
+X010500Y017500
+T5C.04528F139S550
+X010700Y011822
+X010700Y014578
+T6C.2F000S000
+X022400Y015500
+M30

Source/.settings/language.settings.xml

@@ -5,7 +5,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-1071570745985941216" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-1039883725473721519" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
@@ -16,7 +16,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-1014861832354509513" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="-983174811842289816" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>

Source/src/main.c

@@ -82,6 +82,7 @@ uint8_t modeLast = 2;
 
 float agcLevel = 0;
 float agcScale = 160; //Higher is lower volume.. for now
+float txAgcLevel = 0;
 
 
 int ifShift = 0;
@@ -272,62 +273,62 @@ void setupPeripheralPower()
 
 void configDMA(SPI_HandleTypeDef *hspi)
 {
-	  static DMA_HandleTypeDef hdma_tx;
-	  static DMA_HandleTypeDef hdma_rx;
-
-
-	hdma_tx.Instance                 = SPIx_TX_DMA_STREAM;
-
-	  hdma_tx.Init.Channel             = SPIx_TX_DMA_CHANNEL;
-	  hdma_tx.Init.Direction           = DMA_MEMORY_TO_PERIPH;
-	  hdma_tx.Init.PeriphInc           = DMA_PINC_DISABLE;
-	  hdma_tx.Init.MemInc              = DMA_MINC_ENABLE;
-	  hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
-	  hdma_tx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
-	  hdma_tx.Init.Mode                = DMA_NORMAL;
-	  hdma_tx.Init.Priority            = DMA_PRIORITY_LOW;
-	  hdma_tx.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
-	  hdma_tx.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
-	  hdma_tx.Init.MemBurst            = DMA_MBURST_INC4;
-	  hdma_tx.Init.PeriphBurst         = DMA_PBURST_INC4;
-
-	  HAL_DMA_Init(&hdma_tx);
-
-	  /* Associate the initialized DMA handle to the the SPI handle */
-	  __HAL_LINKDMA(hspi, hdmatx, hdma_tx);
-
-	  /* Configure the DMA handler for Transmission process */
-	  hdma_rx.Instance                 = SPIx_RX_DMA_STREAM;
-
-	  hdma_rx.Init.Channel             = SPIx_RX_DMA_CHANNEL;
-	  hdma_rx.Init.Direction           = DMA_PERIPH_TO_MEMORY;
-	  hdma_rx.Init.PeriphInc           = DMA_PINC_DISABLE;
-	  hdma_rx.Init.MemInc              = DMA_MINC_ENABLE;
-	  hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
-	  hdma_rx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
-	  hdma_rx.Init.Mode                = DMA_NORMAL;
-	  hdma_rx.Init.Priority            = DMA_PRIORITY_HIGH;
-	  hdma_rx.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
-	  hdma_rx.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
-	  hdma_rx.Init.MemBurst            = DMA_MBURST_INC4;
-	  hdma_rx.Init.PeriphBurst         = DMA_PBURST_INC4;
-
-	  HAL_DMA_Init(&hdma_rx);
-
-	  /* Associate the initialized DMA handle to the the SPI handle */
-	  __HAL_LINKDMA(hspi, hdmarx, hdma_rx);
-
-	  /*##-4- Configure the NVIC for DMA #########################################*/
-	  /* NVIC configuration for DMA transfer complete interrupt (SPI3_TX) */
-	  HAL_NVIC_SetPriority(15/*SPIx_DMA_TX_IRQn*/, 0, 1);
-	  HAL_NVIC_EnableIRQ(SPIx_DMA_TX_IRQn);
-
-	  /* NVIC configuration for DMA transfer complete interrupt (SPI3_RX) */
-	  HAL_NVIC_SetPriority(SPIx_DMA_RX_IRQn, 0, 0);
-	  HAL_NVIC_EnableIRQ(SPIx_DMA_RX_IRQn);
-
-
-	  //HAL_DMA_Start();
+//	  static DMA_HandleTypeDef hdma_tx;
+//	  static DMA_HandleTypeDef hdma_rx;
+//
+//
+//	hdma_tx.Instance                 = SPIx_TX_DMA_STREAM;
+//
+//	  hdma_tx.Init.Channel             = SPIx_TX_DMA_CHANNEL;
+//	  hdma_tx.Init.Direction           = DMA_MEMORY_TO_PERIPH;
+//	  hdma_tx.Init.PeriphInc           = DMA_PINC_DISABLE;
+//	  hdma_tx.Init.MemInc              = DMA_MINC_ENABLE;
+//	  hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
+//	  hdma_tx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
+//	  hdma_tx.Init.Mode                = DMA_NORMAL;
+//	  hdma_tx.Init.Priority            = DMA_PRIORITY_LOW;
+//	  hdma_tx.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
+//	  hdma_tx.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
+//	  hdma_tx.Init.MemBurst            = DMA_MBURST_INC4;
+//	  hdma_tx.Init.PeriphBurst         = DMA_PBURST_INC4;
+//
+//	  HAL_DMA_Init(&hdma_tx);
+//
+//	  /* Associate the initialized DMA handle to the the SPI handle */
+//	  __HAL_LINKDMA(hspi, hdmatx, hdma_tx);
+//
+//	  /* Configure the DMA handler for Transmission process */
+//	  hdma_rx.Instance                 = SPIx_RX_DMA_STREAM;
+//
+//	  hdma_rx.Init.Channel             = SPIx_RX_DMA_CHANNEL;
+//	  hdma_rx.Init.Direction           = DMA_PERIPH_TO_MEMORY;
+//	  hdma_rx.Init.PeriphInc           = DMA_PINC_DISABLE;
+//	  hdma_rx.Init.MemInc              = DMA_MINC_ENABLE;
+//	  hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
+//	  hdma_rx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
+//	  hdma_rx.Init.Mode                = DMA_NORMAL;
+//	  hdma_rx.Init.Priority            = DMA_PRIORITY_HIGH;
+//	  hdma_rx.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
+//	  hdma_rx.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
+//	  hdma_rx.Init.MemBurst            = DMA_MBURST_INC4;
+//	  hdma_rx.Init.PeriphBurst         = DMA_PBURST_INC4;
+//
+//	  HAL_DMA_Init(&hdma_rx);
+//
+//	  /* Associate the initialized DMA handle to the the SPI handle */
+//	  __HAL_LINKDMA(hspi, hdmarx, hdma_rx);
+//
+//	  /*##-4- Configure the NVIC for DMA #########################################*/
+//	  /* NVIC configuration for DMA transfer complete interrupt (SPI3_TX) */
+//	  HAL_NVIC_SetPriority(15/*SPIx_DMA_TX_IRQn*/, 0, 1);
+//	  HAL_NVIC_EnableIRQ(SPIx_DMA_TX_IRQn);
+//
+//	  /* NVIC configuration for DMA transfer complete interrupt (SPI3_RX) */
+//	  HAL_NVIC_SetPriority(SPIx_DMA_RX_IRQn, 0, 0);
+//	  HAL_NVIC_EnableIRQ(SPIx_DMA_RX_IRQn);
+//
+//
+//	  //HAL_DMA_Start();
 }
 
 
@@ -440,6 +441,10 @@ int isFwd;
 	int     dcOffset2 = 1535;
 	int     dcOffset3 = 1518;
 
+	int dac1OutVal = 0;
+	int dac2OutVal = 0;
+	int txDacOutValMax = 0;
+
 	void captureSamples()
 	{
 		if(adcConfigured)
@@ -473,8 +478,18 @@ int isFwd;
 //						dac2SetValue(samplesB[sampleIndex*2+1] + samplesA[(FFT_SIZE - filterKernelLength)
 //						        + sampleIndex * 2] /*/ (agcLevel * agcScale)*/ * 4096 * gain + 2048);
 //					} else {
-						dac1SetValue(samplesB[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
-						dac2SetValue(samplesB[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+
+					dac1OutVal = samplesB[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+					dac2OutVal = samplesB[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+
+					if(transmitting == 1)
+					{
+						if(dac1OutVal > txDacOutValMax) txDacOutValMax = dac1OutVal;
+						if(dac2OutVal > txDacOutValMax) txDacOutValMax = dac2OutVal;
+					}
+
+						dac1SetValue(dac1OutVal);
+						dac2SetValue(dac2OutVal);
 //					}
 
 
@@ -510,8 +525,21 @@ int isFwd;
 //						dac2SetValue(samplesC[sampleIndex*2+1] + samplesB[(FFT_SIZE - filterKernelLength)
 //						        + sampleIndex * 2] /*/ (agcLevel * agcScale)*/ * 4096 * gain + 2048);
 //					} else {
-						dac1SetValue(samplesC[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
-						dac2SetValue(samplesC[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+						//dac1SetValue(samplesC[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+						//dac2SetValue(samplesC[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+
+						dac1OutVal = samplesC[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+						dac2OutVal = samplesC[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+
+						if(transmitting == 1)
+						{
+							if(dac1OutVal > txDacOutValMax) txDacOutValMax = dac1OutVal;
+							if(dac2OutVal > txDacOutValMax) txDacOutValMax = dac2OutVal;
+						}
+
+							dac1SetValue(dac1OutVal);
+							dac2SetValue(dac2OutVal);
+
 //					}
 
 						if(sampleIndex >= FFT_SIZE - filterKernelLength - 1)
@@ -544,8 +572,22 @@ int isFwd;
 //						dac2SetValue(samplesA[sampleIndex*2+1] + samplesC[(FFT_SIZE - filterKernelLength)
 //						        + sampleIndex * 2] /*/ (agcLevel * agcScale)*/ * 4096 * gain + 2048);
 //					} else {
-						dac1SetValue(samplesA[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
-						dac2SetValue(samplesA[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+						//dac1SetValue(samplesA[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+						//dac2SetValue(samplesA[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048);
+
+						dac1OutVal = samplesA[(sampleIndex)*2] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+						dac2OutVal = samplesA[(sampleIndex)*2+1] /*/ (agcLevel * agcScale)*/ * 4096 * afGain + 2048;
+
+						if(transmitting == 1)
+						{
+							if(dac1OutVal > txDacOutValMax) txDacOutValMax = dac1OutVal;
+							if(dac2OutVal > txDacOutValMax) txDacOutValMax = dac2OutVal;
+						}
+
+							dac1SetValue(dac1OutVal);
+							dac2SetValue(dac2OutVal);
+
+
 //					}
 
 						if(sampleIndex >= FFT_SIZE - filterKernelLength - 1)
@@ -670,39 +712,39 @@ uint8_t aTxBuffer[] = "Chris a baby!   ";
 uint8_t aRxBuffer[256];
 void configUartPeripheral()
 {
-	//Enable Clocks
-	__GPIOB_CLK_ENABLE();
-	__USART1_CLK_ENABLE();
-
-	//Setup TX Pin
-	GPIO_InitStruct.Pin = GPIO_PIN_6;
-	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
-	GPIO_InitStruct.Pull = GPIO_NOPULL;
-	GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
-	GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
-
-	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-
-	//Setup RX Pin
-	//It doesn't get set as an input?
-	GPIO_InitStruct.Pin = GPIO_PIN_7;
-	GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
-
-	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-
-	//Configure NVIC
-	HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
-	HAL_NVIC_EnableIRQ(USART1_IRQn);
-
-	UartHandle.Instance = USART1;
-	UartHandle.Init.BaudRate = 9600;
-	UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
-	UartHandle.Init.StopBits = UART_STOPBITS_1;
-	UartHandle.Init.Parity = UART_PARITY_NONE;
-	UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
-	UartHandle.Init.Mode = UART_MODE_TX_RX;
-
-	HAL_UART_Init(&UartHandle);
+//	//Enable Clocks
+//	__GPIOB_CLK_ENABLE();
+//	__USART1_CLK_ENABLE();
+//
+//	//Setup TX Pin
+//	GPIO_InitStruct.Pin = GPIO_PIN_6;
+//	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+//	GPIO_InitStruct.Pull = GPIO_NOPULL;
+//	GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+//	GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+//
+//	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+//
+//	//Setup RX Pin
+//	//It doesn't get set as an input?
+//	GPIO_InitStruct.Pin = GPIO_PIN_7;
+//	GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+//
+//	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+//
+//	//Configure NVIC
+//	HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
+//	HAL_NVIC_EnableIRQ(USART1_IRQn);
+//
+//	UartHandle.Instance = USART1;
+//	UartHandle.Init.BaudRate = 9600;
+//	UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
+//	UartHandle.Init.StopBits = UART_STOPBITS_1;
+//	UartHandle.Init.Parity = UART_PARITY_NONE;
+//	UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+//	UartHandle.Init.Mode = UART_MODE_TX_RX;
+//
+//	HAL_UART_Init(&UartHandle);
 }
 
 
@@ -821,7 +863,8 @@ main(int argc, char* argv[])
 		Adafruit_GFX_fillRect(310, 8, 3, 3, HAL_GPIO_ReadPin(TOUCH1.port, TOUCH1.pin) ? ILI9340_RED : ILI9340_BLUE);
 		Adafruit_GFX_fillRect(310, 12, 3, 3, HAL_GPIO_ReadPin(TOUCH2.port, TOUCH2.pin) ? ILI9340_RED : ILI9340_BLUE);
 
-		if(HAL_GPIO_ReadPin(TOUCH1.port, TOUCH1.pin))
+		//if(HAL_GPIO_ReadPin(TOUCH1.port, TOUCH1.pin))
+		if(1) //I am locking it in transmit for some testing.
 		{
 			transmitting = 1;
 	        HAL_GPIO_WritePin(DAC_MUX.port, DAC_MUX.pin, 1); //0 = speaker/earphone. 1=TX Drivers
@@ -830,7 +873,7 @@ main(int argc, char* argv[])
 	        HAL_GPIO_WritePin(AMP_SWITCH_A.port, AMP_SWITCH_A.pin, 1); //Route through amp.
 	        HAL_GPIO_WritePin(AMP_SWITCH_B.port, AMP_SWITCH_B.pin, 0); //always reverse of above.
 	        HAL_GPIO_WritePin(AMP_POWER.port, AMP_POWER.pin, 0); //0 is on.
-	        tone = 0;
+	        tone = 200;
 		} else {
 			transmitting = 0;
 	        HAL_GPIO_WritePin(DAC_MUX.port, DAC_MUX.pin, 0); //0 = speaker/earphone. 1=TX Drivers
@@ -1156,7 +1199,8 @@ void fillSamepleWithTone(int tone, float *samples)
 		samples[i] = 0;
 	}
 
-	samples[tone] = 1;
+	samples[tone*2] = 0.9;
+	samples[tone*2+1] = 0.9;
 }