decawave/uwb-dw1000

This repo contains the uwb-core driver for Decawave DW1000 transceiver.

uwb-dw1000's Issues

How can i increase the anchor numbers?

I m trying to add new anchors. But I added maximum 4 anchors. How can i add more anchors? Did anyone do this before? I changed the MAX_DEVICES and LEN_DATA macros but it didnt work.

DW1000_DEVICE_TX_PWR does not match `dw1000_dev_cfg` power settings

The syscfg for the uwb-dw1000 sets the default TX_POWER for the device to -14.3:

uwb-dw1000/hw/drivers/uwb/uwb_dw1000/syscfg.yml

Lines 28 to 33 in 9503f2a

	DW1000_DEVICE_TX_PWR:
	description: 'Tx Power dBm'
	value: ((float)-14.3f)
	DW1000_DEVICE_ANT_GAIN:
	description: 'Antenna Gain dB'
	value: ((float)1.0f)

On the other side the default dw1000_dev_cfg power settings sets a gain of 9dB as the default, but if DW1000_BIAS_CORRECTION_ENABLED is enabled the correction is not based on the configuration settings
in the default config but on the macros DW1000_DEVICE_TX_PWR and DW1000_DEVICE_ANT_GAIN.

uwb-dw1000/hw/drivers/uwb/uwb_dw1000/src/dw1000_hal.c

Lines 77 to 84 in 9503f2a

	.txrf={
	.PGdly = TC_PGDELAY_CH5,
	//.power = 0x2A4A6A8A,
	.BOOSTNORM = dw1000_power_value(DW1000_txrf_config_9db, 2.5),
	.BOOSTP500 = dw1000_power_value(DW1000_txrf_config_9db, 2.5),
	.BOOSTP250 = dw1000_power_value(DW1000_txrf_config_9db, 2.5),
	.BOOSTP125 = dw1000_power_value(DW1000_txrf_config_9db, 2.5)
	},

https://github.com/Decawave/uwb-core/blob/c6cf518e39a49f7084b229ee4ed7ab7ee80b2e5d/lib/uwb_rng/src/uwb_rng.c#L1027-L1039

I'm therefore quite unclear on what each of these values mean and what values should be considered for BIAS_CORRECTION

Channel 5 RF_TXCTRL should be updated to match latest value defined in DW1000 UM

Originally reported on the Decawave forum

Version >=v2.16 of the DW1000 user manual defines RF_TXCTRL should be set to 0x001E3FE3 for UWB channel 5. Using the old value (0x001E3FE0) can result in ~2dB spurs in the channel 5 TX spectrum.

Please update the decadriver to the latest version of the DW1000 API or at least update this value since it can cause regulatory issues when using channel 5, meaning a lower TX power has to be used to meet regulation.