Low-level radio driver for the CC2538. More...

Detailed Description

Low-level radio driver for the CC2538.

Author: Aaron Sowry aaron.nosp@m.@mut.nosp@m.ex.nz; Ian Martin ian@l.nosp@m.ocic.nosp@m.ontro.nosp@m.ls.c.nosp@m.om

Definition in file cc2538_rf.h.

#include <stdbool.h>
#include "board.h"
#include "net/ieee802154.h"
#include "kernel_defines.h"
#include "net/netdev.h"
#include "net/netdev/ieee802154.h"
#include "net/netopt.h"

Include dependency graph for cc2538_rf.h:

Go to the source code of this file.

Data Structures
struct	cc2538_rf_t
	Device descriptor for CC2538 transceiver. More...

Functions
void	cc2538_irq_handler (void)
	IRQ handler for RF events. More...

bool	cc2538_channel_clear (void)
	Trigger a clear channel assessment. More...

void	cc2538_get_addr_long (uint8_t *addr)
	Get the configured long address of the device. More...

void	cc2538_get_addr_short (uint8_t *addr)
	Get the configured short address of the device. More...

unsigned int	cc2538_get_chan (void)
	Get the configured channel number of the device. More...

bool	cc2538_get_monitor (void)
	Check if device is in monitor (promiscuous) mode. More...

uint16_t	cc2538_get_pan (void)
	Get the configured PAN ID of the device. More...

int	cc2538_get_tx_power (void)
	Get the configured transmission power of the device. More...

void	cc2538_init (void)
	Initialise the CC2538 radio hardware. More...

bool	cc2538_is_on (void)
	Check if device is active. More...

void	cc2538_off (void)
	Deactivate the CC2538 radio device. More...

bool	cc2538_on (void)
	Activate the CC2538 radio device. More...

void	cc2538_setup (cc2538_rf_t *dev)
	Setup a CC2538 radio device for use with netdev. More...

void	cc2538_set_addr_short (const uint8_t *addr)
	Set the short address of the device. More...

void	cc2538_set_addr_long (const uint8_t *addr)
	Set the long address of the device. More...

void	cc2538_set_chan (unsigned int chan)
	Set the channel number of the device. More...

void	cc2538_set_freq (unsigned int MHz)
	Set the frequency of the device. More...

void	cc2538_set_monitor (bool mode)
	Enable/disable monitor (promiscuous) mode for the device. More...

void	cc2538_set_pan (uint16_t pan)
	Set the PAN ID of the device. More...

void	cc2538_set_state (cc2538_rf_t *dev, netopt_state_t state)
	Set the state of the device. More...

void	cc2538_set_tx_power (int dBm)
	Set the transmission power for the device. More...

#define	CC2538_AUTOCRC_LEN (2)

#define	CC2538_RF_FIFO_SIZE (128)

#define	CC2538_PACKET_LENGTH_SIZE (1)

#define	CC2538_RF_MAX_DATA_LEN (CC2538_RF_FIFO_SIZE - CC2538_PACKET_LENGTH_SIZE)

#define	IEEE802154_MIN_FREQ (2405)
	Min. More...

#define	IEEE802154_MAX_FREQ (2480)
	Max. More...

#define	IEEE802154_CHANNEL_SPACING (5)
	Channel spacing in MHz

#define	IEEE802154_CHAN2FREQ(chan) ( IEEE802154_MIN_FREQ + ((chan) - IEEE802154_CHANNEL_MIN) * IEEE802154_CHANNEL_SPACING )

#define	IEEE802154_FREQ2CHAN(freq) ( IEEE802154_CHANNEL_MIN + ((freq) - IEEE802154_MIN_FREQ) / IEEE802154_CHANNEL_SPACING )

#define	CC2538_MIN_FREQ (2394)

#define	CC2538_MAX_FREQ (2507)

#define	CC2538_RF_POWER_DEFAULT (CONFIG_IEEE802154_DEFAULT_TXPOWER)
	Default output power in dBm.

#define	CC2538_RF_CHANNEL_DEFAULT (CONFIG_IEEE802154_DEFAULT_CHANNEL)

#define	OUTPUT_POWER_MIN (-24)
	Min output power in dBm.

#define	OUTPUT_POWER_MAX (7)
	Max output power in dBm.

#define	NUM_POWER_LEVELS ( OUTPUT_POWER_MAX - OUTPUT_POWER_MIN + 1 )

#define	CC2538_CORR_VAL_MIN (50U)

#define	CC2538_CORR_VAL_MAX (110U)

#define	CC2538_CORR_VAL_MASK (0x7F)

#define	CC2538_CRC_BIT_MASK (0x80)

#define	CC2538_CCA_THR_MASK (0x000000FF)
	CCA Threshold mask.

#define	CC2538_CCA_MODE_MASK (0x18)
	CCA Mode mask.

#define	CC2538_CCA_MODE_POS (3U)
	CCA Mode pos.

#define	CC2538_CSP_SKIP_INST_MASK (0x70)
	CSP Skip instruction mask.

#define	CC2538_CSP_SKIP_INST_POS (4U)
	CSP Skip instruction pos.

#define	CC2538_CSP_SKIP_N_MASK (0x08)
	CSP Skip condition negation mask.

#define	CC2538_CSP_SKIP_COND_CCA (0x00)
	CSP Skip condition is valid CCA.

#define	CC2538_CSP_SKIP_COND_CSPZ (0x06)
	CSP Skip condition is CSPZ is 0.

#define	CC2538_CSP_SKIP_COND_RSSI (0x07)
	CSP Skip condition is valid RSSI.

#define	CC2538_SFR_MTMSEL_MASK (0x7)
	MAC Timer selection mask.

#define	CC2538_SFR_MTMSEL_TIMER_P (0x2)
	Selects Timer period.

#define	CC2538_MCTRL_SYNC_MASK (0x2)
	Sync MAC Timer to external clock.

#define	CC2538_MCTRL_RUN_MASK (0x1)
	Run MAC Timer.

#define	CC2538_CSP_MCU_CTRL_MASK (0x1)
	MCU Ctrl mask.

#define	CC2538_CSP_INCMAXY_MAX_MASK (0x7)
	CSP INCMAXY instruction (increment Register CSPX without exceeding CSPY)

#define	CC2538_RXENABLE_RXON_MASK (0x80)
	RX on mask.

#define	CC2538_RSSI_OFFSET (-73)
	Signal strength offset value.

#define	CC2538_RF_SENSITIVITY (-97)
	dBm typical, normal conditions

#define	CC2538_ACCEPT_FT_2_ACK (1 << 5)
	enable or disable the ACK filter

#define	CC2538_STATE_SFD_WAIT_RANGE_MIN (0x03U)
	min range value of SFD wait state

#define	CC2538_STATE_SFD_WAIT_RANGE_MAX (0x06U)
	max range value of SFD wait state

#define	CC2538_FRMCTRL1_PENDING_OR_MASK (0x04)
	mask for enabling or disabling the frame pending bit

#define	RFCORE_ASSERT(expr) (void)( (expr) \|\| RFCORE_ASSERT_failure(#expr, __FUNCTION__, __LINE__) )

#define	RFCORE_WAIT_UNTIL(expr)

#define	RFCORE_FLUSH_RECEIVE_FIFO() rfcore_strobe(ISFLUSHRX)

#define	ABS_DIFF(x, y) ( ((x) < (y))? ((y) - (x)) : ((x) - (y)) )

#define	BOOLEAN(x) ( (x) != 0 )

#define	NOT(x) ( (x) == 0 )

#define	GET_BYTE(buffer, index) ( (unsigned char*)(buffer) )[index]

#define	BIT(n) ( 1 << (n) )

enum	{ FSM_STATE_IDLE = 0, FSM_STATE_RX_CALIBRATION = 2, FSM_STATE_TX_CALIBRATION = 32 }

enum	{ STROBE_ERR = BIT(6), TXUNDERF = BIT(5), TXOVERF = BIT(4), RXUNDERF = BIT(3), RXOVERF = BIT(2), RXABO = BIT(1), NLOCK = BIT(0) }

enum	{ SET_RXENMASK_ON_TX = BIT(0), IGNORE_TX_UNDERF = BIT(1), PENDING_OR = BIT(2) }

enum	{ ENERGY_SCAN = BIT(4), AUTOACK = BIT(5), AUTOCRC = BIT(6), APPEND_DATA_MODE = BIT(7) }

enum	{ ACT_UNUSED = BIT(0), SFD = BIT(1), FIFOP = BIT(2), SRC_MATCH_DONE = BIT(3), SRC_MATCH_FOUND = BIT(4), FRAME_ACCEPTED = BIT(5), RXPKTDONE = BIT(6), RXMASKZERO = BIT(7) }

enum	{ TXACKDONE = BIT(0), TXDONE = BIT(1), RF_IDLE = BIT(2), CSP_MANINT = BIT(3), CSP_STOP = BIT(4), CSP_WAIT = BIT(5) }

enum	{ rfc_obs_sig0 = 0, rfc_obs_sig1 = 1, rfc_obs_sig2 = 2 }

enum	{ constant_value_0 = 0x00, constant_value_1 = 0x01, rfc_sniff_data = 0x08, rfc_sniff_clk = 0x09, rssi_valid = 0x0c, demod_cca = 0x0d, sampled_cca = 0x0e, sfd_sync = 0x0f, tx_active = 0x10, rx_active = 0x11, ffctrl_fifo = 0x12, ffctrl_fifop = 0x13, packet_done = 0x14, rfc_xor_rand_i_q = 0x16, rfc_rand_q = 0x17, rfc_rand_i = 0x18, lock_status = 0x19, pa_pd = 0x20, lna_pd = 0x2a, disabled = 0xff }

RF CORE observable signals settings
#define	CONFIG_CC2538_RF_OBS_0 tx_active

#define	CONFIG_CC2538_RF_OBS_1 rx_active

#define	CONFIG_CC2538_RF_OBS_2 rssi_valid

#define	CONFIG_CC2538_RF_OBS_SIG_0_PCX 0 /* PC0 = LED_1 (red) */

#define	CONFIG_CC2538_RF_OBS_SIG_1_PCX 1 /* PC0 = LED_2 (red) */

#define	CONFIG_CC2538_RF_OBS_SIG_2_PCX 2 /* PC0 = LED_3 (red) */

Macro Definition Documentation

◆ IEEE802154_MAX_FREQ

#define IEEE802154_MAX_FREQ (2480)

Max.

frequency (2480 MHz)

Definition at line 57 of file cc2538_rf.h.

◆ IEEE802154_MIN_FREQ

#define IEEE802154_MIN_FREQ (2405)

Min.

frequency (2405 MHz)

Definition at line 56 of file cc2538_rf.h.

◆ RFCORE_WAIT_UNTIL

#define RFCORE_WAIT_UNTIL ( expr )

Value:

    while (!(expr)) {                                        \
    DEBUG("RFCORE_WAIT_UNTIL(%s) at line %u in %s()\n", #expr, __LINE__, __FUNCTION__);  \
    thread_yield();                                                                      \
}

Definition at line 119 of file cc2538_rf.h.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
SFD	Start of frame event.
RXPKTDONE	End of frame event.

Definition at line 177 of file cc2538_rf.h.

◆ anonymous enum

anonymous enum

Enumerator
constant_value_0	Constant value 0.
constant_value_1	Constant value 1.
rfc_sniff_data	Data from packet sniffer. Sample data on rising edges of sniff_clk.
rfc_sniff_clk	250kHz clock for packet sniffer data.
rssi_valid	Pin is high when the RSSI value has been updated at least once since RX was started. Cleared when leaving RX.
demod_cca	Clear channel assessment. See FSMSTAT1 register for details on how to configure the behavior of this signal.
sampled_cca	A sampled version of the CCA bit from demodulator. The value is updated whenever a SSAMPLECCA or STXONCCA strobe is issued.
sfd_sync	Pin is high when a SFD has been received or transmitted. Cleared when leaving RX/TX respectively. Not to be confused with the SFD exception.
tx_active	Indicates that FFCTRL is in one of the TX states. Active-high.
rx_active	Indicates that FFCTRL is in one of the RX states. Active-high.
ffctrl_fifo	Pin is high when one or more bytes are in the RXFIFO. Low during RXFIFO overflow.
ffctrl_fifop	Pin is high when the number of bytes in the RXFIFO exceeds the programmable threshold or at least one complete frame is in the RXFIFO. Also highduring RXFIFO overflow. Not to be confused with the FIFOP exception.
packet_done	A complete frame has been received. I.e., the number of bytes set by the frame-length field has been received.
rfc_xor_rand_i_q	XOR between I and Q random outputs. Updated at 8 MHz.
rfc_rand_q	Random data output from the Q channel of the receiver. Updated at 8 MHz.
rfc_rand_i	Random data output from the I channel of the receiver. Updated at 8 MHz
lock_status	1 when PLL is in lock, otherwise 0
pa_pd	Power amplifier power-down signal.
lna_pd	LNA power-down signal.
disabled	disabled

Definition at line 208 of file cc2538_rf.h.

Function Documentation

◆ cc2538_channel_clear()

bool cc2538_channel_clear ( void )

Trigger a clear channel assessment.

Returns: True if channel is clear; False if channel is busy

◆ cc2538_get_addr_long()

void cc2538_get_addr_long ( uint8_t * addr )

Get the configured long address of the device.

Parameters

[out] addr The currently set (8-byte) long address

◆ cc2538_get_addr_short()

void cc2538_get_addr_short ( uint8_t * addr )

Get the configured short address of the device.

Parameters

[out] addr The currently set (2-byte) short address

◆ cc2538_get_chan()

unsigned int cc2538_get_chan ( void )

Get the configured channel number of the device.

Returns: The currently set channel number

◆ cc2538_get_monitor()

bool cc2538_get_monitor ( void )

Check if device is in monitor (promiscuous) mode.

Returns: True if device is in monitor mode; False if device is not in monitor mode

◆ cc2538_get_pan()

uint16_t cc2538_get_pan ( void )

Get the configured PAN ID of the device.

Returns: The currently set PAN ID

◆ cc2538_get_tx_power()

int cc2538_get_tx_power ( void )

Get the configured transmission power of the device.

Returns: The currently configured transmission power in dBm

◆ cc2538_init()

void cc2538_init ( void )

Initialise the CC2538 radio hardware.

◆ cc2538_irq_handler()

void cc2538_irq_handler ( void )

IRQ handler for RF events.

◆ cc2538_is_on()

bool cc2538_is_on ( void )

Check if device is active.

Returns: True if device is active; False if device is not active

◆ cc2538_off()

void cc2538_off ( void )

Deactivate the CC2538 radio device.

◆ cc2538_on()

bool cc2538_on ( void )

Activate the CC2538 radio device.

◆ cc2538_set_addr_long()

void cc2538_set_addr_long ( const uint8_t * addr )

Set the long address of the device.

Parameters

[in] addr (8-byte) short address to set

◆ cc2538_set_addr_short()

void cc2538_set_addr_short ( const uint8_t * addr )

Set the short address of the device.

Parameters

[in] addr (2-byte) short address to set

◆ cc2538_set_chan()

void cc2538_set_chan ( unsigned int chan )

Set the channel number of the device.

Parameters

[in] chan Channel number to set

◆ cc2538_set_freq()

void cc2538_set_freq ( unsigned int MHz )

Set the frequency of the device.

Parameters

[in] MHz Frequency to set in MHz

◆ cc2538_set_monitor()

void cc2538_set_monitor ( bool mode )

Enable/disable monitor (promiscuous) mode for the device.

Parameters

[in] mode True for enable, false for disable

◆ cc2538_set_pan()

void cc2538_set_pan ( uint16_t pan )

Set the PAN ID of the device.

Parameters

[in] pan PAN ID to set

◆ cc2538_set_state()

void cc2538_set_state	(	cc2538_rf_t *	dev,
		netopt_state_t	state
	)

Set the state of the device.

Parameters

[out]	dev	Device descriptor
[in]	state	State to set device to

◆ cc2538_set_tx_power()

void cc2538_set_tx_power ( int dBm )

Set the transmission power for the device.

Parameters

[in] dBm Transmission power to set in dBm

◆ cc2538_setup()

void cc2538_setup ( cc2538_rf_t * dev )

Setup a CC2538 radio device for use with netdev.

Parameters

[out] dev Device descriptor

Detailed Description

Data Structures

Functions

RF CORE observable signals settings

Macro Definition Documentation

◆ IEEE802154_MAX_FREQ

◆ IEEE802154_MIN_FREQ

◆ RFCORE_WAIT_UNTIL

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

Function Documentation

◆ cc2538_channel_clear()

◆ cc2538_get_addr_long()

◆ cc2538_get_addr_short()

◆ cc2538_get_chan()

◆ cc2538_get_monitor()

◆ cc2538_get_pan()

◆ cc2538_get_tx_power()

◆ cc2538_init()

◆ cc2538_irq_handler()

◆ cc2538_is_on()

◆ cc2538_off()

◆ cc2538_on()

◆ cc2538_set_addr_long()

◆ cc2538_set_addr_short()

◆ cc2538_set_chan()

◆ cc2538_set_freq()

◆ cc2538_set_monitor()

◆ cc2538_set_pan()

◆ cc2538_set_state()

◆ cc2538_set_tx_power()

◆ cc2538_setup()