DW3000 wake up fails

[MichaelG]

Hi,

I have some trouble with the DWS3000 (with DW3110 on it).
2 of 3 Boards I bought do not reply with a valid device ID.

My wake up sequence: (like in the simple tx example)

• pull down the reset line for 50 ms
• wait 2 ms
• wait till chip reaches IDLE_RC state by checking if “dwt_checkidlerc()” returns true
• call “dwt_initialise(DWT_DW_INIT)”

The main function of my code

//runs in Zepyhr RTOS
//printk: debug output on UART
//k_msleep: sleep for x miliseconds

void main(void)
{
	/* startup messages */
	printk("*** Starting %s %s ***\n", FIRMWARE_NAME, GIT_VERSION);
#ifdef WITH_SYSTEM_VERSION_H
	printk("*** Part of %s %s ***\n", SYSTEM_NAME, SYSTEM_GIT_VERSION);
#endif /* WITH_SYSTEM_VERSION_H */


	/* init UART */
	uart_dev = device_get_binding(UART_DEVICE);
	if (!uart_dev) {
		printk("UART: Device driver not found.\n");
		return;
	}

	/* init SPI */
	spi_dev = device_get_binding(SPI_DEVICE);
	if (!spi_dev) {
		printk("SPI: Device driver not found.\n");
		return;
	}

	spi_cs_gpio = device_get_binding(SPI_CS_DEVICE);
	gpio_pin_configure(spi_cs_gpio, SPI_CS_PIN, GPIO_OUTPUT_HIGH); /* inits CS to high */

	spi_cfg.operation = SPI_WORD_SET(8) | SPI_TRANSFER_MSB | SPI_OP_MODE_MASTER;
	spi_cfg.frequency = 10000000U;

	/* init DW1000 */
	reset_DW1000();

	k_msleep(2);

	while (!dwt_checkidlerc()) /* Need to make sure DW IC is in IDLE_RC before proceeding */
    {
		printk(".");
		k_msleep(10);
	};

	if (dwt_initialise(DWT_DW_INIT) == DWT_SUCCESS) {
		printk("Decawave init successful.\n");
	} else {
		printk("Decawave init failed.\n");
	}

	uint32_t id = dwt_readdevid();
	printk("Decawave ID: %x\n", id);

	//uint32_t test = dwt_read32bitoffsetreg(SEQ_CTRL_ID, 0);
	//printk("SEQ_CTRL_ID = %u\n", test);

	return; //will stop the thread
}

One of the chips responds with “deca0302” as device ID.
The other two chips do not reach the IDLE_RC state. If I skip the check for IDLE_RC state they respond with “6fe50101” as device ID. Then the dwt_initialise(DWT_DW_INIT) call returns DWT_ERROR.

I verified all SPI communication with a logic analyzer:

trace with the working chip

name	type	start_time	duration	mosi	miso
SPI	enable	0.00209885	1.99999999e-09
SPI	result	0.002102622	1.2e-06	0x00	0x00
SPI	result	0.00210893	1.202e-06	0x00	0x02
SPI	result	0.002111332	1.2e-06	0x00	0x03
SPI	result	0.00211357	1.202e-06	0x00	0xCA
SPI	result	0.002115812	1.2e-06	0x00	0xDE
SPI	disable	0.002119928	2e-09
SPI	enable	0.00212152	1.99999999e-09
SPI	result	0.00212317	1.202e-06	0xD6	0x00
SPI	result	0.00212557	1.202e-06	0x20	0x00
SPI	result	0.00212781	1.202e-06	0x01	0x00
SPI	result	0.002130052	1.2e-06	0x00	0x00
SPI	disable	0.002134168	1.99999999e-09
SPI	enable	0.002134918	2e-09
SPI	result	0.00213655	1.202e-06	0xD6	0x00
SPI	result	0.00213895	1.202e-06	0x10	0x00
SPI	result	0.00214119	1.202e-06	0x04	0x00
SPI	result	0.00214343	1.202e-06	0x00	0x00
SPI	disable	0.002147554	1.99999988e-09
SPI	enable	0.002148268	1.99999988e-09
SPI	result	0.00214987	1.202e-06	0xD6	0x00
SPI	result	0.00215227	1.202e-06	0x20	0x00
SPI	result	0.00215451	1.202e-06	0x02	0x00
SPI	result	0.00215675	1.202e-06	0x00	0x00
SPI	disable	0.002160844	2.00000011e-09
SPI	enable	0.002161478	1.99999988e-09
SPI	result	0.00216313	1.202e-06	0x56	0x00
SPI	result	0.00216553	1.202e-06	0x40	0x00
SPI	result	0.00217128	1.202e-06	0x00	0x08
SPI	result	0.00217368	1.202e-06	0x00	0x98
SPI	result	0.00217592	1.202e-06	0x00	0x88
SPI	result	0.00217816	1.202e-06	0x00	0x88
SPI	disable	0.002182238	1.99999999e-09
SPI	enable	0.002183204	1.99999999e-09
SPI	result	0.00218488	1.202e-06	0xD6	0x00
SPI	result	0.00218728	1.202e-06	0x20	0x00
SPI	result	0.00218952	1.202e-06	0x01	0x00
SPI	result	0.00219176	1.202e-06	0x00	0x00
SPI	disable	0.002195924	1.99999999e-09
SPI	enable	0.002196574	1.99999999e-09
SPI	result	0.00219819	1.202e-06	0xD6	0x00
SPI	result	0.00220059	1.202e-06	0x10	0x00
SPI	result	0.00220283	1.202e-06	0x05	0x00
SPI	result	0.00220507	1.202e-06	0x00	0x00
SPI	disable	0.002209194	2.00000011e-09
SPI	enable	0.002209854	2e-09
SPI	result	0.00221145	1.202e-06	0xD6	0x00
SPI	result	0.00221385	1.202e-06	0x20	0x00
SPI	result	0.00221609	1.202e-06	0x02	0x00
SPI	result	0.00221833	1.202e-06	0x00	0x00
SPI	disable	0.002222408	1.99999999e-09
SPI	enable	0.002223064	2.00000011e-09
SPI	result	0.00222466	1.202e-06	0x56	0x00
SPI	result	0.00222706	1.202e-06	0x40	0x00
SPI	result	0.00223283	1.202e-06	0x00	0x19
SPI	result	0.00223523	1.202e-06	0x00	0x88
SPI	result	0.00223747	1.202e-06	0x00	0x09
SPI	result	0.00223971	1.202e-06	0x00	0x08
SPI	disable	0.002243788	1.99999999e-09
SPI	enable	0.002244714	1.99999988e-09
SPI	result	0.00224632	1.202e-06	0xD6	0x00
SPI	result	0.00224872	1.202e-06	0x20	0x00
SPI	result	0.00225096	1.202e-06	0x01	0x00
SPI	result	0.0022532	1.202e-06	0x00	0x00
SPI	disable	0.002257304	1.99999999e-09
SPI	enable	0.002257974	2.00000011e-09
SPI	result	0.00225957	1.202e-06	0xD6	0x00
SPI	result	0.00226197	1.202e-06	0x10	0x00
SPI	result	0.00226421	1.202e-06	0x0A	0x00
SPI	result	0.00226645	1.202e-06	0x00	0x00
SPI	disable	0.002270574	2.00000011e-09
SPI	enable	0.002271258	2.00000011e-09
SPI	result	0.00227286	1.2e-06	0xD6	0x00
SPI	result	0.00227526	1.202e-06	0x20	0x00
SPI	result	0.0022775	1.202e-06	0x02	0x00
SPI	result	0.00227974	1.202e-06	0x00	0x00
SPI	disable	0.002283818	1.99999988e-09
SPI	enable	0.002284508	1.99999999e-09
SPI	result	0.00228613	1.202e-06	0x56	0x00
SPI	result	0.00228853	1.202e-06	0x40	0x00
SPI	result	0.00229425	1.202e-06	0x00	0x13
SPI	result	0.00229665	1.2e-06	0x00	0x00
SPI	result	0.00229889	1.202e-06	0x00	0x14
SPI	result	0.00230113	1.202e-06	0x00	0x00
SPI	disable	0.002305208	1.99999988e-09
SPI	enable	0.002306348	1.99999999e-09
SPI	result	0.00230793	1.202e-06	0xD6	0x00
SPI	result	0.00231033	1.202e-06	0x22	0x00
SPI	result	0.00231257	1.2e-06	0xFF	0x00
SPI	result	0.00231481	1.2e-06	0xFF	0x00
SPI	result	0.00231705	1.202e-06	0x80	0x00
SPI	result	0.00231929	1.202e-06	0x01	0x00
SPI	disable	0.002323218	1.99999999e-09
SPI	enable	0.002323892	2.00000011e-09
SPI	result	0.00232547	1.202e-06	0xE2	0x00
SPI	result	0.00232787	1.2e-06	0x7E	0x00
SPI	result	0.00233011	1.202e-06	0xE0	0x00
SPI	result	0.00233235	1.202e-06	0xFF	0x00
SPI	result	0.00233459	1.202e-06	0x14	0x00
SPI	result	0.00233683	1.202e-06	0x00	0x00
SPI	disable	0.002340788	2.00000011e-09
SPI	enable	0.002341452	1.99999999e-09
SPI	result	0.00234305	1.2e-06	0xD6	0x00
SPI	result	0.00234545	1.2e-06	0x20	0x00
SPI	result	0.00234769	1.2e-06	0x01	0x00
SPI	result	0.00234993	1.2e-06	0x00	0x00
SPI	disable	0.002354008	2.00000011e-09
SPI	enable	0.002354678	1.99999988e-09
SPI	result	0.00235628	1.2e-06	0xD6	0x00
SPI	result	0.00235868	1.2e-06	0x10	0x00
SPI	result	0.00236092	1.2e-06	0x20	0x00
SPI	result	0.00236316	1.2e-06	0x00	0x00
SPI	disable	0.002367282	1.99999988e-09
SPI	enable	0.002367968	2.00000011e-09
SPI	result	0.00236957	1.2e-06	0xD6	0x00
SPI	result	0.00237197	1.2e-06	0x20	0x00
SPI	result	0.00237421	1.2e-06	0x02	0x00
SPI	result	0.00237645	1.2e-06	0x00	0x00
SPI	disable	0.002380542	2.00000011e-09
SPI	enable	0.002381172	1.99999988e-09
SPI	result	0.00238277	1.2e-06	0x56	0x00
SPI	result	0.00238517	1.2e-06	0x40	0x00
SPI	result	0.00239092	1.2e-06	0x00	0x40
SPI	result	0.00239332	1.2e-06	0x00	0x02
SPI	result	0.00239556	1.2e-06	0x00	0x00
SPI	result	0.0023978	1.2e-06	0x00	0x10
SPI	disable	0.002401878	1.99999999e-09
SPI	enable	0.002403108	1.99999999e-09
SPI	result	0.00240474	1.2e-06	0xD6	0x00
SPI	result	0.00240714	1.2e-06	0x20	0x00
SPI	result	0.00240938	1.2e-06	0x01	0x00
SPI	result	0.00241162	1.2e-06	0x00	0x00
SPI	disable	0.002415762	1.99999999e-09
SPI	enable	0.002416438	1.99999999e-09
SPI	result	0.00241806	1.2e-06	0xD6	0x00
SPI	result	0.00242046	1.2e-06	0x10	0x00
SPI	result	0.0024227	1.2e-06	0x1F	0x00
SPI	result	0.00242494	1.2e-06	0x00	0x00
SPI	disable	0.002429028	1.99999988e-09
SPI	enable	0.002429688	1.99999999e-09
SPI	result	0.0024313	1.2e-06	0xD6	0x00
SPI	result	0.0024337	1.2e-06	0x20	0x00
SPI	result	0.00243594	1.2e-06	0x02	0x00
SPI	result	0.00243818	1.2e-06	0x00	0x00
SPI	disable	0.002442258	2.00000011e-09
SPI	enable	0.002442948	1.99999988e-09
SPI	result	0.00244457	1.2e-06	0x56	0x00
SPI	result	0.00244697	1.2e-06	0x40	0x00
SPI	result	0.00245271	1.2e-06	0x00	0x00
SPI	result	0.00245511	1.2e-06	0x00	0x00
SPI	result	0.00245735	1.2e-06	0x00	0x00
SPI	result	0.00245959	1.2e-06	0x00	0x00
SPI	disable	0.002463668	1.99999999e-09
SPI	enable	0.002464688	1.99999988e-09
SPI	result	0.00246629	1.2e-06	0xD6	0x00
SPI	result	0.00246869	1.2e-06	0x20	0x00
SPI	result	0.00247093	1.2e-06	0x01	0x00
SPI	result	0.00247317	1.2e-06	0x00	0x00
SPI	disable	0.002477252	2.00000011e-09
SPI	enable	0.002477928	1.99999988e-09
SPI	result	0.00247955	1.2e-06	0xD6	0x00
SPI	result	0.00248195	1.2e-06	0x10	0x00
SPI	result	0.00248419	1.2e-06	0x1E	0x00
SPI	result	0.00248643	1.2e-06	0x00	0x00
SPI	disable	0.002490552	1.99999999e-09
SPI	enable	0.002491212	1.99999988e-09
SPI	result	0.00249283	1.2e-06	0xD6	0x00
SPI	result	0.00249523	1.2e-06	0x20	0x00
SPI	result	0.00249747	1.2e-06	0x02	0x00
SPI	result	0.00249971	1.2e-06	0x00	0x00
SPI	disable	0.002503802	1.99999999e-09
SPI	enable	0.002504488	1.99999988e-09
SPI	result	0.00250608	1.2e-06	0x56	0x00
SPI	result	0.00250848	1.2e-06	0x40	0x00
SPI	result	0.00251422	1.2e-06	0x00	0x28
SPI	result	0.00251662	1.2e-06	0x00	0x00
SPI	result	0.00251886	1.2e-06	0x00	0x00
SPI	result	0.0025211	1.2e-06	0x00	0x00
SPI	disable	0.002525178	1.99999999e-09
SPI	enable	0.002526212	1.99999999e-09
SPI	result	0.002528	1.2e-06	0xD2	0x00
SPI	result	0.0025304	1.2e-06	0x50	0x00
SPI	result	0.00253264	1.2e-06	0x28	0x00
SPI	disable	0.002536852	2.00000011e-09
SPI	enable	0.004708436	2.00000011e-09
SPI	result	0.004710072	1.2e-06	0x00	0x00
SPI	result	0.004716052	1.2e-06	0x00	0x02
SPI	result	0.004718452	1.2e-06	0x00	0x03
SPI	result	0.004720692	1.2e-06	0x00	0xCA
SPI	result	0.004722932	1.2e-06	0x00	0xDE
SPI	disable	0.00472701	2.00000011e-09

trace with the non-working chip (skip the check for IDLE_RC state)

name	type	start_time	duration	mosi	miso
SPI	enable	0.002098884	2.00000011e-09
SPI	result	0.002102656	1.2e-06	0x00	0x00
SPI	result	0.002108964	1.202e-06	0x00	0x01
SPI	result	0.002111364	1.202e-06	0x00	0x01
SPI	result	0.002113604	1.202e-06	0x00	0xE5
SPI	result	0.002115844	1.202e-06	0x00	0x6F
SPI	disable	0.002119962	1.99999999e-09
SPI	enable	0.003944932	2.00000011e-09
SPI	result	0.003946518	1.2e-06	0x00	0x00
SPI	result	0.003952508	1.2e-06	0x00	0x01
SPI	result	0.003954908	1.2e-06	0x00	0x01
SPI	result	0.003957148	1.2e-06	0x00	0xE5
SPI	result	0.003959388	1.202e-06	0x00	0x6F
SPI	disable	0.003963466	1.99999999e-09

Is there something missing in my weak up sequence?

[MartinG]

Hey folks, colleague of Michael here.

We’d like to get some help on this, please If someone from customer support might have the chance to take a peek that would be highly appreciated. I suppose we are either missing something very simple or, there might be some hardware fault here.
Thank you very much!

Here is some more technical details:

We have tried other SPI clock rates (781kHz to 38MHz) but to no avail. The 38.4MHz and 3.3V look fine.

Issue with this is, we are not getting the ill-reading devices to work at all. The DTU clock runs at some odd rate, here’s a comparison between our three boards:

It looks to me like there is some internal clocking problem with two of the chips we have.

[MartinG]

Sorry for quickly replying again, Form wouldn’t let me post more than one picture…

This is the hardware in question:

The modules were acquired from Mouser end-May and all DW3110 bear the same markings.

[leapslabs]

Hi,
in my opinion is something wrong with your SPI driver. By checking your ID in binary:
DECA0302 -> 11011110110010100000001100000010
6FE50101 -> 01101111111001010000000100000001

as you can see it is one bit shifted to the right. Try different SPI configuration.

JK

[MichaelG]

Hi,

Thank you leapslabs!
Since on the DWS3000 the SPICPOL pin conflicts with the UART_TX of the Arduino Header, this pin is initialized to HIGH by default on my application.
Then the DW3000 changes the MISO line at the time the µC reads, which explains the different behavior over the different boards.

Thank you so much.
Michael

[cristian893]

Hi,

Could you please tell me how did you resolve this? I have the same problem. I use the DWS3000 Arduino shield with NUCLEO-F429ZI board.

Thank you!
Cristian

[MichaelG]

Hi,

In my case, the problem was that the SPI_CPOL pin was HIGH.
If you have a similar problem, ensure your microcontroller uses the same SPI-Settigns as your DW3000.
If that is already the case, you have a different problem.

Good Luck!
Michael