uwb_min.c File Reference

— DW3110 bring-up driver (implementation). More...

#include "uwb_min.h"
#include <errno.h>
#include <string.h>
#include "woz_port.h"
#include "woz_log.h"
#include <deca_device_api.h>
#include <deca_probe_interface.h>
#include <dw3000_hw.h>
#include <dw3000_spi.h>
#include "uwb_seam.h"

Include dependency graph for uwb_min.c:

Functions
static int	uwb_probe_ensure (void)
	Bring the SDK up to "probed" state on first call; no-op afterwards.
static int	uwb_radio_ensure_init (void)
	Bring the SDK up to "radio configured + LEDs on" state.
int	uwb_min_radio_init (void)
	Ensure the DW3110 is fully initialised (probe + initialise + configure + LEDs).
uint32_t	uwb_min_radio_generation (void)
	Count of fresh radio inits; changes whenever the base config was re-applied.
int	uwb_min_hw_reset (void)
	Pulse the DW3110 RST line low to force a hardware reset.
int	uwb_min_read_chipid (uint32_t *id_out)
	Read the DW3000-family DEV_ID register over SPI.
int	uwb_min_selftest (struct uwb_selftest_result *out)
	Radio self-test: configure, TX one frame, then arm RX.
int	uwb_min_twr_prep (void)
	Configure the radio for the raw SS-TWR loopback (SP3-ND, ch9, code11); no STS.
void	uwb_min_twr_exchange (struct uwb_twr_frame *f)
	Run one POLL/RESP exchange; the STS must already be programmed.
int	uwb_min_twr_poll (uint32_t n, uint32_t period_ms, struct uwb_twr_result *out)
	Raw static-STS SS-TWR initiator burst (bench probe).

Variables
static const dwt_config_t	g_uwb_cfg
	Default radio configuration (channel 9, 6.8 Mbps).
static const dwt_txconfig_t	g_uwb_txcfg
	Default TX power / pulse-shaper config (channel 9).
static const uint8_t	g_partner_sts_key [16]
	Shared static STS test vector for the two-device raw loopback.

Detailed Description

— DW3110 bring-up driver (implementation).

Function Documentation

uwb_probe_ensure()

static int uwb_probe_ensure ( void  )

static

Bring the SDK up to "probed" state on first call; no-op afterwards.

The whole reset -> wake -> probe sequence is retried: transient SPI/power glitches (bench-seen as a burst of dwt_probe -1 during post-commissioning Wi-Fi traffic, self-recovering on the caller's next attempt) clear on a fresh chip reset, so retrying here turns a failed session start into a slightly slower one.