Inc/dw1000.h

@@ -2,6 +2,8 @@
 #define __dw1000_H
 #include "FreeRTOS.h"
 #include <stdint.h>
+#include "cmsis_os.h"
+#include "dw1000_util.h"
 //DECA:DW1000 SLEEP and WAKEUP configuration parameters
 #define DWT_LOADLDO              0x1000                                          // ONW_LLDO - on wakeup load the LDO tune value
 #define DWT_LOADUCODE    0x0800                      // ONW_LLDE - on wakeup load the LDE ucode
@@ -16,6 +18,61 @@
 #define DWT_WAKE_WK      0x2                                            // wake up on WAKEUP PIN
 #define DWT_SLP_EN       0x1                                            // enable sleep/deep sleep functionality
 
+
+/**
+ *	Defines for channel and prf selection and Preamble Code.
+ *	Refer to Page 204 in the dw1000 User Manual 2.04
+ */
+
+#define PRF_SHIFT 0
+#define CHANNEL_SHIFT 1
+#define PREAMBLE_SHIFT 4
+
+//16MHz
+#define CH1_16MHZ_1 (0 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (1 << PREAMBLE_SHIFT)
+#define CH1_16MHZ_2 (0 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (2 << PREAMBLE_SHIFT)
+#define CH2_16MHZ_3 (0 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (3 << PREAMBLE_SHIFT)
+#define CH2_16MHZ_4 (0 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (4 << PREAMBLE_SHIFT)
+#define CH3_16MHZ_5 (0 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (5 << PREAMBLE_SHIFT)
+#define CH3_16MHZ_6 (0 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (6 << PREAMBLE_SHIFT)
+#define CH4_16MHZ_7 (0 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (7 << PREAMBLE_SHIFT)
+#define CH4_16MHZ_8 (0 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (8 << PREAMBLE_SHIFT)
+#define CH5_16MHZ_3 (0 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (3 << PREAMBLE_SHIFT)
+#define CH5_16MHZ_4 (0 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (4 << PREAMBLE_SHIFT)
+#define CH7_16MHZ_7 (0 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (7 << PREAMBLE_SHIFT)
+#define CH7_16MHZ_8 (0 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (8 << PREAMBLE_SHIFT)
+
+//64MHz
+#define CH1_64MHZ_9  (1 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (9  << PREAMBLE_SHIFT)
+#define CH1_64MHZ_10 (1 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (10 << PREAMBLE_SHIFT)
+#define CH1_64MHZ_11 (1 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (11 << PREAMBLE_SHIFT)
+#define CH1_64MHZ_12 (1 << PRF_SHIFT) | (1 << CHANNEL_SHIFT) | (12 << PREAMBLE_SHIFT)
+
+#define CH2_64MHZ_9  (1 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (9  << PREAMBLE_SHIFT)
+#define CH2_64MHZ_10 (1 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (10 << PREAMBLE_SHIFT)
+#define CH2_64MHZ_11 (1 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (11 << PREAMBLE_SHIFT)
+#define CH2_64MHZ_12 (1 << PRF_SHIFT) | (2 << CHANNEL_SHIFT) | (12 << PREAMBLE_SHIFT)
+
+#define CH3_64MHZ_9  (1 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (9  << PREAMBLE_SHIFT)
+#define CH3_64MHZ_10 (1 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (10 << PREAMBLE_SHIFT)
+#define CH3_64MHZ_11 (1 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (11 << PREAMBLE_SHIFT)
+#define CH3_64MHZ_12 (1 << PRF_SHIFT) | (3 << CHANNEL_SHIFT) | (12 << PREAMBLE_SHIFT)
+
+#define CH4_64MHZ_17 (1 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (17 << PREAMBLE_SHIFT)
+#define CH4_64MHZ_18 (1 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (18 << PREAMBLE_SHIFT)
+#define CH4_64MHZ_19 (1 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (19 << PREAMBLE_SHIFT)
+#define CH4_64MHZ_20 (1 << PRF_SHIFT) | (4 << CHANNEL_SHIFT) | (20 << PREAMBLE_SHIFT)
+
+#define CH5_64MHZ_9  (1 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (9  << PREAMBLE_SHIFT)
+#define CH5_64MHZ_10 (1 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (10 << PREAMBLE_SHIFT)
+#define CH5_64MHZ_11 (1 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (11 << PREAMBLE_SHIFT)
+#define CH5_64MHZ_12 (1 << PRF_SHIFT) | (5 << CHANNEL_SHIFT) | (12 << PREAMBLE_SHIFT)
+
+#define CH7_64MHZ_17 (1 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (17 << PREAMBLE_SHIFT)
+#define CH7_64MHZ_18 (1 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (18 << PREAMBLE_SHIFT)
+#define CH7_64MHZ_19 (1 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (19 << PREAMBLE_SHIFT)
+#define CH7_64MHZ_20 (1 << PRF_SHIFT) | (7 << CHANNEL_SHIFT) | (20 << PREAMBLE_SHIFT)
+
 //DECA:DW1000 INIT configuration parameters
 #define DWT_LOADLDOTUNE   0x8
 #define DWT_LOADTXCONFIG  0x4
@@ -81,13 +138,24 @@ typedef struct {
 
 	uint16_t sfdTO;                  //!< SFD timeout value (in symbols)
 
-}dwt_config_t;
+} dwt_config_t;
 
 int dw1000_init(uint16_t config, BaseType_t (*sendCallback)(),
-		BaseType_t (*receiveCallback)(uint32_t bufferLength));
+		BaseType_t (*receiveCallback)(uint32_t bufferLength, uint8_t ts_valid));
 int dw1000_configure(dwt_config_t *config, uint8_t use_otpconfigvalues);
 int dw1000_sendFrame(uint8_t *payload, uint16_t len);
+int dw1000_writeFrameIntoBuffer(uint16_t txBufferOffset, uint8_t *payload, uint16_t len);
+int dw1000_transmitFrame(uint16_t txBufferOffset, uint16_t len);
 int dw_1000_receiveFrameFromIsr(uint8_t * buffer, uint32_t length);
 void dw1000_extiCallback(void);
+void vTaskGlobalTimeIncrement(void *pvParameters);
+
+void dw1000_generateConfig(uint16_t mode, dwt_config_t *config);
 
 #endif /*__ dw1000_H */
+/**
+ *	Defines various return codes for driver functions
+ */
+#define DW1000_RET_OK 0
+#define DW1000_RET_MSG_TO_LONG -1
+#define DW1000_RET_TX_BUFFER_OVERFLOW -2

Inc/dw1000_hal.h

@@ -17,6 +17,8 @@ int dw1000Hal_readRegister(uint8_t regID, uint8_t *dest, uint16_t len);
 int dw1000Hal_writeRegister(uint8_t regID, uint8_t *src, uint16_t len);
 int dw1000Hal_readRegisterFromIsr(uint8_t regID, uint8_t *dest, uint16_t len);
 int dw1000Hal_writeRegisterFromIsr(uint8_t regID, uint8_t *dest, uint16_t len);
+int dw1000Hal_readSubRegisterFromIsr(uint8_t regID, uint16_t offset, uint8_t *dest, uint16_t len);
+int dw1000Hal_writeSubRegisterFromIsr(uint8_t regID, uint16_t offset, uint8_t *src, uint16_t len);
 int dw1000Hal_readDmaRegister(uint8_t regID, uint8_t *dest, uint16_t len, void (*callback)(int state, void *data, uint16_t len));
 int dw1000Hal_writeDmaRegister(uint8_t regID, uint8_t *src, uint16_t len, void (*callback)(int state, void *data, uint16_t len));
 #endif /*__ dw1000_hal_H */

Inc/dw1000_util.h

@@ -2,8 +2,9 @@
 #define __dw1000_util_H
 #include "FreeRTOS.h"
 #include <stdint.h>
+#include <string.h>
 #include "deca_regs.h"
-
+//#define DOUBLE_BUFFER
 
 //DECA:Defines for enable_clocks function
 #define FORCE_SYS_XTI  0
@@ -31,6 +32,14 @@
 #define NUM_CH_SUPPORTED 8 //supported channels are '0', 1, 2, 3, 4, 5, '6', 7
 #define PCODES 25 //supported preamble codes
 
+#define ever ;;
+#define GLOBAL_TIME_TICK_MS 17592
+
+typedef struct {
+	uint64_t ms;
+	uint64_t subms;
+} dw1000_global_time_t;
+
 typedef struct {//DECA
 	uint32_t 	txFCTRL;           	// keep TX_FCTRL register config
 	uint16_t 	rfrxDly; 			// rf delay (delay though the RF blocks before the signal comes out of the antenna i.e. "antenna delay")
@@ -41,16 +50,17 @@ typedef struct {//DECA
 	uint32_t 	sysCFGreg;         	// local copy of system config register
 	uint32_t 	txPowCfg[12]; 		// stores the Tx power configuration read from OTP (6 channels consecutively with PRF16 then 64, e.g. Ch 1 PRF16 is index 0 and 64 index 1)
 	BaseType_t (*sendCB)();
-	BaseType_t (*receiveCB)(uint32_t bufferLength);
+	BaseType_t (*receiveCB)(uint32_t bufferLength, uint8_t ts_valid);
+	TaskHandle_t taskHandle;
 	int 		prfIndex;
     uint8_t       longFrames ;        // flag in non-standard long frame mode
 	uint32_t 	ldoTune;			//low 32 bits of LDO tune value
     uint8_t       chan;               // added chan here - used in the reading of acc
+    dw1000_global_time_t last_rx_time;
 
 } dw1000_local_data_t;
-extern dw1000_local_data_t dw1000local; // Static local device data
-
 
+extern dw1000_local_data_t dw1000local; // Static local device data
 extern const uint8_t pll2calcfg;
 
 // SFD Threshold
@@ -78,15 +88,14 @@ extern const uint16_t lde_replicaCoeff[PCODES];
 
 #define DEBUG
 
-
-
 void dw1000Util_enableclocks(int clocks);
 void dw1000Util_enableRX();
 uint32_t dw1000Util_otpread(uint32_t address);
 void dw1000Util_forceTrxOff(void);
 void dw1000Util_reset(void);
 void dw1000Util_resetRxOnly(void);
-
+void dw1000Util_getRxTimestamp(dw1000_global_time_t *timeBuffer);
+void dw1000Util_printGlobalTimestamp(dw1000_global_time_t *time);
 
 #ifdef DEBUG
 void hexdump(uint8_t * buffer, uint8_t len);

Src/dw1000.c

 #include "dw1000.h"
-#include "dw1000_util.h"
 #include "dw1000_hal.h"
 #include "dw1000_isr.h"
 #include "deca_regs.h"
@@ -14,9 +13,13 @@
 #define ANTDLY_ADDRESS (0x1C)
 #define XTRIM_ADDRESS  (0x1E)
 
+volatile uint32_t global_time = 0;
+
+uint16_t maximum_message_length = 1024; //Fixme: put right message length
+
 
 int dw1000_init(uint16_t config, BaseType_t (*sendCallback)(),
-		BaseType_t (*receiveCallback)(uint32_t bufferLength)) {
+		BaseType_t (*receiveCallback)(uint32_t bufferlength, uint8_t ts_valid)) {
 
 
 	// Clear control-structure
@@ -38,9 +41,7 @@ int dw1000_init(uint16_t config, BaseType_t (*sendCallback)(),
 	uint32_t sys_mask = 0;
 	dw1000Hal_readRegister(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
 	trace_printf("SYS_MASK: %x\n", sys_mask);
-	sys_mask |= ( SYS_MASK_MTXFRS | SYS_MASK_MRXDFR | SYS_MASK_MRXFCG
-			| SYS_MASK_MLDEDONE
-			);
+	sys_mask |= ( SYS_MASK_MTXFRS | SYS_MASK_MRXDFR	| SYS_MASK_MLDEDONE);
 	trace_printf("SYS_MASK: %x\n", sys_mask);
 	dw1000Hal_writeRegister(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
 
@@ -105,6 +106,14 @@ int dw1000_init(uint16_t config, BaseType_t (*sendCallback)(),
 
 		//FIXME: Sleep in FreeRTOS? Sleep(1); // Allow time for code to upload (should take up to 120 us)
 
+		osDelay(1);
+
+
+
+		wr_buf[1] = 0x02; //Force TX clock off.
+		wr_buf[0] = 0x00; //Force system clock to be the 19.2 MHz XTI clock.
+		//DECA:dwt_writetodevice(PMSC_ID, PMSC_CTRL0_OFFSET, 2, wr_buf);
+		dw1000Hal_writeSubRegister(PMSC_ID, PMSC_CTRL0_OFFSET, wr_buf, 2); //Just first 2 byte instead of whole crtl0
 		//default clocks (ENABLE_ALL_SEQ)
 		//DECA:enable clocks for sequencing
 		dw1000Util_enableclocks(ENABLE_ALL_SEQ);
@@ -128,14 +137,20 @@ int dw1000_init(uint16_t config, BaseType_t (*sendCallback)(),
 	dw1000Hal_readRegister(SYS_CFG_ID, (uint8_t *) &dw1000local.sysCFGreg,
 	SYS_CFG_LEN);
 
+#ifdef DOUBLE_BUFFER
+	 //Enable double buffer
+	dw1000local.sysCFGreg &= (~SYS_CFG_DIS_DRXB);
+	dw1000Hal_writeRegister(SYS_CFG_ID, (uint8_t *) &dw1000local.sysCFGreg,
+	SYS_CFG_LEN);
+#endif
 
-	uint32_t event_clear = 0xFFFFFFFF;
-	dw1000Hal_writeRegister(SYS_STATUS_ID, (uint8_t*) &event_clear,
-	SYS_STATUS_LEN);
 
 
 	//Enable Receiver
 	dw1000Util_enableRX();
+	uint32_t event_clear = 0xFFFFFFFF;
+	dw1000Hal_writeRegister(SYS_STATUS_ID, (uint8_t*) &event_clear,
+	SYS_STATUS_LEN);
 
 	return 0;
 }
@@ -163,10 +178,10 @@ int dw1000_configure(dwt_config_t *config, uint8_t use_otpconfigvalues) {
 
 	dw1000local.sysCFGreg |= (SYS_CFG_PHR_MODE_11 & (config->phrMode << 16)); //Set to enable PhyHdr for long frames
 
-	dw1000local.sysCFGreg |= (1 << 29); //RXAUTR
+	dw1000local.sysCFGreg |= (SYS_CFG_RXAUTR); //Automatic reenable of the receiver
 
-	dw1000Hal_writeRegister(SYS_CFG_ID, (uint8_t *) &dw1000local.sysCFGreg,
-	SYS_CFG_LEN);
+
+	dw1000Hal_writeRegister(SYS_CFG_ID, (uint8_t *) &dw1000local.sysCFGreg, SYS_CFG_LEN);
 
 	//DECA:write/set the lde_replicaCoeff
 	dw1000Hal_writeSubRegister(LDE_IF_ID, LDE_REPC_OFFSET, (uint8_t *) &reg16,
@@ -342,46 +357,56 @@ int dw1000_configure(dwt_config_t *config, uint8_t use_otpconfigvalues) {
 	return 0;
 }
 
-uint16_t txBufferOffset = 0;
-
-// sends a frame and blocks until finished
 int dw1000_sendFrame(uint8_t *payload, uint16_t len) {
+	//Write payload to the buffer with no offset
+	int ret = dw1000_writeFrameIntoBuffer(0, payload, len);
+	if(ret != DW1000_RET_OK){
+		return ret;
+	}
+	//Invoke transmission
+	return dw1000_transmitFrame(0,len);
 
+}
+
+int dw1000_writeFrameIntoBuffer(uint16_t txBufferOffset, uint8_t *payload, uint16_t len){
+	if ((len + 2) > maximum_message_length){
+		// Message + CRC is longer than the allowed msg length (usually 127, but decawave
+		return DW1000_RET_MSG_TO_LONG;
+	}
 	if ((txBufferOffset + len + 2) > 1024){
-		return -1; //FIXME: ERRORCODE
+		return DW1000_RET_TX_BUFFER_OVERFLOW;
 	}
 
-	//Write payload
+	//Write payload into tx buffer
 	dw1000Hal_writeRegister(TX_BUFFER_ID + txBufferOffset, payload, len);
 
+	return DW1000_RET_OK;
+}
 
+int dw1000_transmitFrame(uint16_t txBufferOffset, uint16_t len){
 	//Set length and offset
     uint32_t reg32 = dw1000local.txFCTRL | len+2 | (txBufferOffset << 22);
 	dw1000Hal_writeSubRegister(TX_FCTRL_ID, 0, (uint8_t *) &reg32,  TX_FCTRL_LEN-1);
-
-	txBufferOffset += len + 2;
-
-	txBufferOffset = 0; //FIXME: Löschen, wenn anständige Offsetbehandlung.
-
-
-//	/* WITHOUT THE NEXT PART: SECOND TIME NO SENDING POSSIBLE, BUT CAN'T BE FOUND IN ORIGINAL DRIVER */
-//	uint32_t sys_ctrl = 0;
-//	dw1000Hal_readRegister(SYS_CTRL_ID, (uint8_t *)&sys_ctrl, 4);
-//	//trace_printf("sys_ctrl: %x\n", sys_ctrl);
-//	sys_ctrl |= SYS_CTRL_TRXOFF;//  Immediately cancel all RX and TX operations, bring radio to IDLE state
-////	trace_printf("sys_ctrl: %x\n", sys_ctrl);
-//	dw1000Hal_writeRegister(SYS_CTRL_ID, (uint8_t *)&sys_ctrl, 4);
-//	sys_ctrl = 0;
-dw1000Util_forceTrxOff();
+	/* WITHOUT THE NEXT PART: SECOND TIME NO SENDING POSSIBLE, BUT CAN'T BE FOUND IN ORIGINAL DRIVER */
+	dw1000Util_forceTrxOff();
 
     uint8_t temp = (uint8_t) SYS_CTRL_TXSTRT;
     dw1000Hal_writeRegister(SYS_CTRL_ID, (uint8_t *)&temp,1);
 
+	return DW1000_RET_OK;
+}
 
-	return 0;
+void vTaskGlobalTimeIncrement(void *pvParameters) {
 
+	TickType_t xNextWakeTime;
+	xNextWakeTime = xTaskGetTickCount();
+	for(ever) {
+		// Task is delayed until radio timestamp approximately overflows
+		vTaskDelayUntil(&xNextWakeTime, GLOBAL_TIME_TICK_MS / portTICK_PERIOD_MS);
+		global_time++;
+	}
+	vTaskDelete( NULL);
 }
-
 void dw1000_extiCallback(void) {
 	dw1000Isr_handleInterrupt();
 }
@@ -400,3 +425,38 @@ int dw1000_setPanId(uint16_t addr) {
 	return dw1000Hal_writeSubRegister(PANADR_ID, PANADR_PAN_ID_OFFSET,
 			(uint8_t*) &addr, PANADR_PAN_ID_LEN);
 }
+
+void dw1000_generateConfig(uint16_t mode, dwt_config_t *config){
+
+	uint8_t prf64Mhz = mode & 1; //0, if 16Mhz is selected
+
+	//Set channel
+	config->chan = (mode >> CHANNEL_SHIFT) & 7;
+
+	//Set rxCode/txCode, which can be different, but should be the same
+	config->rxCode = (mode >> PREAMBLE_SHIFT) & 31;
+	config->txCode = (mode >> PREAMBLE_SHIFT) & 31;
+
+
+	//Set PRF
+	if(prf64Mhz){
+		//64MHz PRF
+		config->prf = DWT_PRF_64M;
+	}else{
+		//16MHz PRF
+		config->prf = DWT_PRF_16M;
+	}
+
+	config->sfdTO = (129 + 8 - 8); //Fixme: How to calculate SFD Timeout
+
+	config->dataRate = DWT_BR_6M8;
+	config->rxPAC = 	DWT_PAC8;
+
+	//Use IEEE Conform Header and SFD Fixme: Support Decawave later?
+	config->nsSFD = 0;
+	config->phrMode = 0;
+
+	config->txPreambLength = DWT_PLEN_128;
+
+}
+

Src/dw1000_hal.c

@@ -75,7 +75,7 @@ int dw1000Hal_readSubRegisterFromIsr(uint8_t regID, uint16_t offset,
 	int ret;
 	//portENTER_CRITICAL();
 	if ((spiSema != NULL)
-			&& (xSemaphoreTake(spiSema, ( TickType_t ) DW1000HAL_SPI_TIMEOUT)
+			&& (xSemaphoreTakeFromISR(spiSema, pdFALSE)
 					== pdTRUE)) {
 		if (len <= 127) {
 			dummy[0] = regID & 0x3f; //set the first two bit 0 (read access, no subregister)
@@ -97,7 +97,7 @@ int dw1000Hal_readSubRegisterFromIsr(uint8_t regID, uint16_t offset,
 		dw1000Hal_chipDeselect();
 		while (hspi->State != HAL_SPI_STATE_READY)
 			;
-		xSemaphoreGive(spiSema);
+		xSemaphoreGiveFromISR(spiSema, pdFALSE);
 	} else {
 		ret = HAL_LOCKED;
 	}

Src/dw1000_isr.c

 #include "dw1000_hal.h"
 #include "deca_regs.h"
 #include "dw1000_util.h"
+#include "Trace.h"
+
+BaseType_t dw1000Hal_handleTx(uint64_t * event, uint64_t * event_clear) {
+	// Ignore unused parameters, may be needed for later purposes
+	(void) event;
+	(void) event_clear;
 
-BaseType_t dw1000Hal_handleTx(uint64_t event) {
 	BaseType_t xHigherPriorityTaskWoken = pdFALSE;
 	dw1000Util_enableRX();
 	if (dw1000local.sendCB != NULL) {
 		xHigherPriorityTaskWoken |= dw1000local.sendCB();
-	} else {
-		trace_printf("TX handler null\n");
 	}
 	return xHigherPriorityTaskWoken;
 }
 
-BaseType_t dw1000Hal_handleRx(uint64_t event) {
+BaseType_t dw1000Hal_handleRx(uint64_t * event, uint64_t * event_clear) {
 	BaseType_t xHigherPriorityTaskWoken = pdFALSE;
 
-	//if (event & SYS_STATUS_LDEDONE)  // LDE done/finished
-	{
-		//trace_printf("LDEDONE\n");
-
-		uint16_t len = 0;
-
-		if (event & SYS_STATUS_RXOVRR) //NOTE when overrun both HS and RS pointers point to the same buffer
-		{
-			trace_printf("SYS_STATUS_RXOVRR\n");
-
-			//when the overrun happens the frame info data of the buffer A (which contains the older frame e.g. seq. num = x)
-			//will be corrupted with the latest frame (seq. num = x + 2) data, both the host and IC are pointing to buffer A
-			//we are going to discard this frame - turn off transceiver and reset receiver
-			dw1000Util_forceTrxOff();
-			dw1000Util_resetRxOnly();
-			uint32_t sys_ctrl = 0;
-			dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-			SYS_CTRL_LEN); // switch to rx mode
-			sys_ctrl |= SYS_CTRL_RXENAB;
-			dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-			SYS_CTRL_LEN);
-
-			return pdFALSE;
-		} else //no overrun condition - proceed to process the frame
-		{
-			trace_printf("NO OVERRUN\n");
-
-			uint32_t rx_frame_info;
-			dw1000Hal_readRegisterFromIsr(RX_FINFO_ID,
-					(uint8_t *) &rx_frame_info,
-					RX_FINFO_LEN);
-			uint32_t rx_buffer_len;
-			rx_buffer_len = rx_frame_info & RX_FINFO_RXFLEN_MASK; // No shifting required
-			trace_printf("Paketlength: %u\n", rx_buffer_len);
-			xHigherPriorityTaskWoken = dw1000local.receiveCB(rx_buffer_len);
-
-			uint32_t sys_ctrl = 0;
-			//dw1000Hal_resetRxOnly();
-			dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-			SYS_CTRL_LEN); // switch to rx mode
-			sys_ctrl |= SYS_CTRL_RXENAB;
-			dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-			SYS_CTRL_LEN);
-
-		} //end of no overrun
-	} //if LDE_DONE is set (this means we have both SYS_STATUS_RXFCG and SYS_STATUS_LDEDONE)
-//	  else //no LDE_DONE ?
-	{
-		//	trace_printf("NO LDE done or LDE error\n");
+	//Fixme: Wann kann ein Overrun auftreten?
+
+	//Get get length
+	uint32_t rx_frame_info;
+	dw1000Hal_readRegisterFromIsr(RX_FINFO_ID, (uint8_t *) &rx_frame_info,
+	RX_FINFO_LEN);
+	uint32_t rx_buffer_len;
+	rx_buffer_len = rx_frame_info & RX_FINFO_RXFLEN_MASK; // No shifting required
+
+	uint8_t lde_done = (*event & SYS_STATUS_LDEDONE) ? 1 : 0;
+
+	//Trigger Callback
+	if (dw1000local.receiveCB != NULL) {
+		xHigherPriorityTaskWoken = dw1000local.receiveCB(rx_buffer_len,
+				lde_done);
+	} else if (dw1000local.taskHandle != NULL) {
+		//TODO Notify taskHandle
 	}
+#ifdef DOUBLE_BUFFER
+	if((*event & SYS_STATUS_HSRBP) != (*event & SYS_STATUS_ICRBP)){
+		*event_clear |= *event & CLEAR_DBLBUFF_EVENTS  ;
+	}
+#endif
+
+	//Set the clear bits.
+	*event_clear |= CLEAR_ALLRXGOOD_EVENTS;
+	*event_clear |= CLEAR_ALLRXERROR_EVENTS;
+
+	dw1000Util_enableRX();
 
 	return xHigherPriorityTaskWoken;
 }
 
 void dw1000Isr_handleInterrupt(void) {
 	BaseType_t xHigherPriorityTaskWoken = pdFALSE;
-	trace_printf("ISR ENTRY\n");
 	uint64_t event = 0;
+	uint64_t event_clear = 0;
+
 	dw1000Hal_readRegisterFromIsr(SYS_STATUS_ID, (uint8_t*) &event,
 	SYS_STATUS_LEN);
-	uint64_t event_clear = 0;
 
+	// Handle weird somehow random occuring losing lock events
 	if (event & SYS_STATUS_CLKPLL_LL) { // Clock PLL Losing Lock
 		event_clear |= SYS_STATUS_CLKPLL_LL;
 		if (event & SYS_STATUS_CPLOCK) {
@@ -88,105 +71,32 @@ void dw1000Isr_handleInterrupt(void) {
 		event &= ~(SYS_STATUS_CLKPLL_LL);
 	}
 
-//
-//	if((status & SYS_STATUS_LDEDONE) && (dw1000local.dblbuffon == 0))
-//	if((event & (SYS_STATUS_LDEDONE | SYS_STATUS_RXPHD | SYS_STATUS_RXSFDD)) != (SYS_STATUS_LDEDONE | SYS_STATUS_RXPHD | SYS_STATUS_RXSFDD)){
-//		dw1000_forceTrxOff();
-//		//trace_printf("SHIT\n");
-//		dw1000Hal_resetRxOnly();
-//	}
-#ifdef DEBUG
-	hexdump(&event, 5);
-#endif
-	if (event & SYS_STATUS_TXFRS) { // Frame sent
-		event_clear |= SYS_STATUS_TXFRS; //clear interrupt
-		dw1000Hal_handleTx(event);
+	if (event & SYS_STATUS_TXFRS) {
+		// Frame sent
+		dw1000Hal_handleTx(&event, &event_clear);
 	} else if ((event
 			& ( SYS_STATUS_RXFCG | SYS_STATUS_RXPHD | SYS_STATUS_RXSFDD))
 			!= (SYS_STATUS_RXFCG | SYS_STATUS_RXPHD | SYS_STATUS_RXSFDD)) {
 
+#ifdef DOUBLE_BUFFER
+		dw1000Hal_handleRx(&event, &event_clear);
+#else
+		//Error Case
 		trace_printf("Error!\n");
+		hexdump(&event, 5);
 		event_clear |= CLEAR_ALLRXERROR_EVENTS;
 		event_clear |= CLEAR_ALLRXGOOD_EVENTS;
-		//re-enable the receiver - if auto rx re-enable set
 		dw1000Util_enableRX();
+#endif
 	} else {
-
-		if (event & SYS_STATUS_RXFCG) {
-			event_clear |= CLEAR_ALLRXGOOD_EVENTS;
-			event_clear |= CLEAR_ALLRXERROR_EVENTS;
-			dw1000Hal_handleRx(event);
-		} else if (event & SYS_STATUS_RXDFR) {
-			//trace_printf("Received\n");
-			trace_printf("RX DFR\n");
-			event_clear |= CLEAR_ALLRXGOOD_EVENTS;
-			dw1000Util_enableRX();
-		} else if (event & SYS_STATUS_RXPHE) {
-			trace_printf("PH ERROR\n");
-			event_clear |= CLEAR_ALLRXERROR_EVENTS;
-			dw1000Util_enableRX();
-		}
+		dw1000Hal_handleRx(&event, &event_clear);
 	}
 
-
-//	if (event & SYS_STATUS_RXDFR){ // Frame received
-//		event_clear |= SYS_STATUS_RXDFR; //clear interrupt
-//		trace_printf("dw1000Hal_extiCallback:received %lu\n",event);
-//
-//		uint32_t rx_frame_info;
-//		dw1000Hal_readRegisterFromIsr(RX_FINFO_ID, (uint8_t *)&rx_frame_info, RX_FINFO_LEN);
-//		uint32_t rx_buffer_len;
-//		rx_buffer_len = rx_frame_info & RX_FINFO_RXFLEN_MASK ; // No shifting required
-//		trace_printf("%d\n", rx_buffer_len);
-//		xHigherPriorityTaskWoken |= receiveCB(rx_buffer_len);
-//		uint32_t sys_ctrl = 0;
-//		//dw1000Hal_resetRxOnly();
-//		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN); // switch to rx mode
-//		sys_ctrl |= SYS_CTRL_RXENAB;
-//		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN);
-//	}
-
-//	if (event & SYS_STATUS_RXSFDD){ // Frame received
-//		event_clear |= SYS_STATUS_RXSFDD; //clear interrupt
-//	//	trace_printf("dw1000Hal_extiCallback: sfd detected\n");
-//		uint32_t sys_ctrl = 0;
-//		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN); // switch to rx mode
-//		sys_ctrl |= SYS_CTRL_RXENAB;
-//		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN);
-//	}
-//	if (event & SYS_STATUS_RXPRD){ // Frame received
-//		event_clear |= SYS_STATUS_RXPRD; //clear interrupt
-//	//	trace_printf("dw1000Hal_extiCallback:preamble detected \n");
-//		uint32_t sys_ctrl = 0;
-//		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN); // switch to rx mode
-//		sys_ctrl |= SYS_CTRL_RXENAB;
-//		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN);
-//	}
-//	if (event & SYS_STATUS_RXPHD){ // Frame received
-//		event_clear |= SYS_STATUS_RXPHD; //clear interrupt
-//		//trace_printf("dw1000Hal_extiCallback:PHR detected\n");
-//		uint32_t sys_ctrl = 0;
-//		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN); // switch to rx mode
-//		sys_ctrl |= SYS_CTRL_RXENAB;
-//		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*)&sys_ctrl, SYS_CTRL_LEN);
-//	}
-
-//	if (event & SYS_STATUS_RXFCG) { // Frame received
-//		event_clear = 0x6F00; //clear interrupt
-//
-//		trace_printf("dw1000Hal_extiCallback: CRC stuff  %lu\n");
-
-//		uint32_t sys_ctrl = 0;
-//		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-//				SYS_CTRL_LEN); // switch to rx mode
-//		sys_ctrl |= SYS_CTRL_RXENAB;
-//		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
-//				SYS_CTRL_LEN);
-//	}
-
+	//Clear the status register
 	dw1000Hal_writeRegisterFromIsr(SYS_STATUS_ID, (uint8_t*) &event_clear,
 	SYS_STATUS_LEN);
+
+	//Schedule higher priority task ASAP
 	portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
-	//trace_printf("ISR DONE\n");
 
 }

Src/dw1000_util.c

@@ -2,6 +2,9 @@
 #include "dw1000_hal.h"
 #include "dw1000_util.h"
 #include <stdio.h>
+#include "Trace.h"
+
+extern volatile uint32_t global_time;
 
  dw1000_local_data_t dw1000local; // Static local device data
 //-----------------------------------------
@@ -223,6 +226,19 @@ void dw1000Util_enableclocks(int clocks)
 
 
 void dw1000Util_enableRX(){
+#ifdef DOUBLE_BUFFER
+	//Align HSRBP and ICRBP if needed (see page 37 in the Usermanual)
+	uint64_t event = 0;
+	dw1000Hal_readRegisterFromIsr(SYS_STATUS_ID, (uint8_t*) &event,
+	SYS_STATUS_LEN);
+	if((event & SYS_STATUS_HSRBP) != (event & SYS_STATUS_ICRBP)){
+		uint32_t reg;
+		dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t *)&reg, SYS_CTRL_LEN);
+		reg |= SYS_CTRL_HSRBTOGGLE;
+		dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t *)&reg, SYS_CTRL_LEN);
+	}
+#endif
+
 	uint32_t sys_ctrl = 0;
 	dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t*) &sys_ctrl,
 	SYS_CTRL_LEN); // switch to rx mode
@@ -257,12 +273,65 @@ uint32_t dw1000Util_otpread(uint32_t address)
     return (ret_data);
 }
 
+void dw1000Util_getRxTimestamp(dw1000_global_time_t *time_buffer){
+		uint8_t buf[5] = {0};
+		uint64_t radio_rx_time = 0;
+
+		// Read rx timestamp from radio
+		dw1000Hal_readSubRegisterFromIsr(RX_TIME_ID, RX_TIME_RX_STAMP_OFFSET, buf, RX_TIME_RX_STAMP_LEN);
+		radio_rx_time = ((uint64_t) buf[4]) << 32 |
+						((uint64_t) buf[3]) << 24 |
+						((uint64_t) buf[2]) << 16 |
+						((uint64_t) buf[1]) << 8 |
+						((uint64_t) buf[0]) << 0;
+
+		// multiply by 16 to get picoseconds (actually ~15.65 is right)
+		radio_rx_time <<= 4;
+
+		// Calculate timestamp in milliseconds and sub-milliseconds parts separately
+		uint64_t ms_buf = global_time * GLOBAL_TIME_TICK_MS + radio_rx_time / 1000000000llu;
+		uint64_t subms_buf = radio_rx_time - (global_time * 1000000000llu);
+
+		if(ms_buf < dw1000local.last_rx_time.ms) {
+			// The radio timer had an overflow, but the global timer didn't, yet
+			ms_buf += GLOBAL_TIME_TICK_MS;
+		}
+
+		// Write calculated timestamp to provided structure
+		time_buffer->ms = ms_buf;
+		time_buffer->subms = subms_buf;
+
+		// Store new timestamp to be able to detect asynchronous overflows
+		dw1000local.last_rx_time.ms = ms_buf;
+}
+
+void lltoa(uint64_t val, char *dest_buf, uint8_t base) {
+	char buf[64] = {0};
+	uint32_t i = 62;
+
+	for(; val && i ; --i, val /= base) {
+		buf[i] = "0123456789abcdef"[val % base];
+	}
+
+	memcpy(dest_buf, &buf[i + 1], 64);
+}
+
+void dw1000Util_printGlobalTimestamp(dw1000_global_time_t *time) {
+	char ms_buf[64] = {0};
+	char subms_buf[64] = {0};
+
+	// Convert uint64_t timestamp to strings, because printf can't handle 64-bit integers
+	lltoa(time->ms, ms_buf, 10);
+	lltoa(time->subms, subms_buf, 10);
+
+	printf("RX time = %s.%sms\n", ms_buf, subms_buf);
+}
 
 void dw1000Util_forceTrxOff(void) {
 	uint32_t sys_ctrl = 0;
 	//DECA: decaIrqStatus_t stat ; ???
 	uint32_t  sys_mask;
-	dw1000Hal_readRegister(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
+	dw1000Hal_readRegisterFromIsr(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
 
 
 	// need to beware of interrupts occurring in the middle of following read modify write cycle
@@ -274,20 +343,20 @@ void dw1000Util_forceTrxOff(void) {
 
 	uint32_t tmp_mask = 0;
 	// No interrupts
-	dw1000Hal_writeRegister(SYS_MASK_ID, (uint8_t *) &tmp_mask, SYS_MASK_LEN);
+	dw1000Hal_writeRegisterFromIsr(SYS_MASK_ID, (uint8_t *) &tmp_mask, SYS_MASK_LEN);
 
 	//Disable radio
-	dw1000Hal_readRegister(SYS_CTRL_ID, (uint8_t *) &sys_ctrl, 4);
+	dw1000Hal_readRegisterFromIsr(SYS_CTRL_ID, (uint8_t *) &sys_ctrl, 4);
 	sys_ctrl |= SYS_CTRL_TRXOFF;//  Immediately cancel all RX and TX operations, bring radio to IDLE state
-	dw1000Hal_writeRegister(SYS_CTRL_ID, (uint8_t *) &sys_ctrl, 4);
+	dw1000Hal_writeRegisterFromIsr(SYS_CTRL_ID, (uint8_t *) &sys_ctrl, 4);
 
 
 	uint32_t tmp = (CLEAR_ALLTX_EVENTS | CLEAR_ALLRXERROR_EVENTS | CLEAR_ALLRXGOOD_EVENTS);
 
-	dw1000Hal_writeRegister(SYS_STATUS_ID,(uint8_t *)  &tmp, 4) ;
+	dw1000Hal_writeRegisterFromIsr(SYS_STATUS_ID,(uint8_t *)  &tmp, 4) ;
 	//TODO     dwt_syncrxbufptrs();
 
-	dw1000Hal_writeRegister(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
+	dw1000Hal_writeRegisterFromIsr(SYS_MASK_ID, (uint8_t *) &sys_mask, SYS_MASK_LEN);
 
 	portENABLE_INTERRUPTS();
 

makefile.inc

+CFLAGS+=-I"Inc" -I"dw1000/Inc/"
+SRC+=$(wildcard dw1000/Src/*.c)
\ No newline at end of file