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Implement extended RF API for the CC2530 RF

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This commit is contained in:
George Oikonomou 2014-04-18 14:41:45 +01:00
parent df81cbaed9
commit 3183805ba4
4 changed files with 344 additions and 35 deletions
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342
cpu/cc253x/dev/cc2530-rf.c
View file

@ -96,6 +96,10 @@
/* 192 ms, radio off -> on interval */
#define ONOFF_TIME RTIMER_ARCH_SECOND / 3125
#define CC2530_RF_CHANNEL_SET_ERROR -1
#define CC2530_RF_TX_POWER_TXCTRL_MIN_VAL 0x09 /* Value for min TX Power */
#define CC2530_RF_TX_POWER_TXCTRL_DEF_VAL 0x69 /* Reset Value */
/*---------------------------------------------------------------------------*/
#if CC2530_RF_CONF_HEXDUMP
#include "dev/io-arch.h"
@ -114,50 +118,215 @@ static int on(void); /* prepare() needs our prototype */
static int off(void); /* transmit() needs our prototype */
static int channel_clear(void); /* transmit() needs our prototype */
/*---------------------------------------------------------------------------*/
int8_t
cc2530_rf_channel_set(uint8_t channel)
/* TX Power dBm lookup table. Values from SmartRF Studio v1.16.0 */
typedef struct output_config {
radio_value_t power;
uint8_t txpower_val;
} output_config_t;
static const output_config_t output_power[] = {
{ 5, 0xF5 }, /* 4.5 */
{ 3, 0xE5 }, /* 2.5 */
{ 1, 0xD5 },
{ 0, 0xC5 }, /* -0.5 */
{ -1, 0xB5 }, /* -1.5 */
{ -3, 0xA5 },
{ -4, 0x95 },
{ -6, 0x85 },
{ -8, 0x75 },
{-10, 0x65 },
{-12, 0x55 },
{-14, 0x45 },
{-16, 0x35 },
{-18, 0x25 },
{-20, 0x15 },
{-22, 0x05 },
{-28, 0x05 }, /* TXCTRL must be set to 0x09 */
};
#define OUTPUT_CONFIG_COUNT (sizeof(output_power) / sizeof(output_config_t))
/* Max and Min Output Power in dBm */
#define OUTPUT_POWER_MIN (output_power[OUTPUT_CONFIG_COUNT - 1].power)
#define OUTPUT_POWER_MAX (output_power[0].power)
/*---------------------------------------------------------------------------*/
/**
* \brief Get the current operating channel
* \return Returns a value in [11,26] representing the current channel
*/
static uint8_t
get_channel()
{
return (uint8_t)((FREQCTRL + 44) / 5);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Set the current operating channel
* \param channel The desired channel as a value in [11,26]
* \return Returns a value in [11,26] representing the current channel
* or a negative value if \e channel was out of bounds
*/
static int8_t
set_channel(uint8_t channel)
{
PUTSTRING("RF: Set Chan\n");
if((channel < CC2530_RF_CHANNEL_MIN) || (channel > CC2530_RF_CHANNEL_MAX)) {
return -1;
return CC2530_RF_CHANNEL_SET_ERROR;
}
/* Changes to FREQCTRL take effect after the next recalibration */
/* Changes to FREQCTRL take effect after the next recalibration */
off();
FREQCTRL = (CC2530_RF_CHANNEL_MIN
+ (channel - CC2530_RF_CHANNEL_MIN) * CC2530_RF_CHANNEL_SPACING);
on();
return (int8_t) channel;
return (int8_t)channel;
}
/*---------------------------------------------------------------------------*/
uint8_t
cc2530_rf_power_set(uint8_t new_power)
static radio_value_t
get_pan_id(void)
{
PUTSTRING("RF: Set Power\n");
/* off() */
TXPOWER = new_power;
/* on() */
return TXPOWER;
return (radio_value_t)(PAN_ID1 << 8 | PAN_ID0);
}
/*---------------------------------------------------------------------------*/
void
cc2530_rf_set_addr(uint16_t pan)
static void
set_pan_id(uint16_t pan)
{
#if LINKADDR_SIZE==8 /* EXT_ADDR[7:0] is ignored when using short addresses */
int i;
for(i = (LINKADDR_SIZE - 1); i >= 0; --i) {
((uint8_t *)&EXT_ADDR0)[i] = linkaddr_node_addr.u8[LINKADDR_SIZE - 1 - i];
}
#endif
PAN_ID0 = pan & 0xFF;
PAN_ID1 = pan >> 8;
}
/*---------------------------------------------------------------------------*/
static radio_value_t
get_short_addr(void)
{
return (radio_value_t)(SHORT_ADDR1 << 8 | SHORT_ADDR0);
}
/*---------------------------------------------------------------------------*/
static void
set_short_addr(uint16_t addr)
{
SHORT_ADDR0 = addr & 0xFF;
SHORT_ADDR1 = addr >> 8;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Reads the current signal strength (RSSI)
* \return The current RSSI in dBm
*
* This function reads the current RSSI on the currently configured
* channel.
*/
static radio_value_t
get_rssi(void)
{
int8_t rssi;
SHORT_ADDR0 = linkaddr_node_addr.u8[LINKADDR_SIZE - 1];
SHORT_ADDR1 = linkaddr_node_addr.u8[LINKADDR_SIZE - 2];
/* If we are off, turn on first */
if(RXENABLE == 0) {
rf_flags |= WAS_OFF;
on();
}
/* Wait on RSSI_VALID */
while((RSSISTAT & RSSISTAT_RSSI_VALID) == 0);
rssi = (radio_value_t)RSSI - RSSI_OFFSET;
/* If we were off, turn back off */
if((rf_flags & WAS_OFF) == WAS_OFF) {
rf_flags &= ~WAS_OFF;
off();
}
return rssi;
}
/*---------------------------------------------------------------------------*/
/* Returns the current CCA threshold in dBm */
static radio_value_t
get_cca_threshold(void)
{
return (int8_t)CCACTRL0 - RSSI_OFFSET;
}
/*---------------------------------------------------------------------------*/
/* Sets the CCA threshold in dBm */
static void
set_cca_threshold(radio_value_t value)
{
CCACTRL0 = (value + RSSI_OFFSET) & 0xFF;
}
/*---------------------------------------------------------------------------*/
/* Returns the current TX power in dBm */
static radio_value_t
get_tx_power(void)
{
int i;
uint8_t reg_val = TXPOWER;
if(TXCTRL == CC2530_RF_TX_POWER_TXCTRL_MIN_VAL) {
return OUTPUT_POWER_MIN;
}
/*
* Find the TXPOWER value in the lookup table
* If the value has been written with set_tx_power, we should be able to
* find the exact value. However, in case the register has been written in
* a different fashion, we return the immediately lower value of the lookup
*/
for(i = 0; i < OUTPUT_CONFIG_COUNT; i++) {
if(reg_val >= output_power[i].txpower_val) {
return output_power[i].power;
}
}
return OUTPUT_POWER_MIN;
}
/*---------------------------------------------------------------------------*/
/*
* Set TX power to 'at least' power dBm
* This works with a lookup table. If the value of 'power' does not exist in
* the lookup table, TXPOWER will be set to the immediately higher available
* value
*/
static void
set_tx_power(radio_value_t power)
{
int i;
if(power <= output_power[OUTPUT_CONFIG_COUNT - 1].power) {
TXCTRL = CC2530_RF_TX_POWER_TXCTRL_MIN_VAL;
TXPOWER = output_power[OUTPUT_CONFIG_COUNT - 1].txpower_val;
return;
}
for(i = OUTPUT_CONFIG_COUNT - 2; i >= 0; --i) {
if(power <= output_power[i].power) {
/* Perhaps an earlier call set TXCTRL to 0x09. Restore */
TXCTRL = CC2530_RF_TX_POWER_TXCTRL_DEF_VAL;
TXPOWER = output_power[i].txpower_val;
return;
}
}
}
/*---------------------------------------------------------------------------*/
static void
set_frame_filtering(uint8_t enable)
{
if(enable) {
FRMFILT0 |= FRMFILT0_FRAME_FILTER_EN;
} else {
FRMFILT0 &= ~FRMFILT0_FRAME_FILTER_EN;
}
}
/*---------------------------------------------------------------------------*/
static void
set_auto_ack(uint8_t enable)
{
if(enable) {
FRMCTRL0 |= FRMCTRL0_AUTOACK;
} else {
FRMCTRL0 &= ~FRMCTRL0_AUTOACK;
}
}
/*---------------------------------------------------------------------------*/
/* Netstack API radio driver functions */
@ -204,8 +373,7 @@ init(void)
/* MAX FIFOP threshold */
FIFOPCTRL = CC2530_RF_MAX_PACKET_LEN;
cc2530_rf_power_set(CC2530_RF_TX_POWER);
cc2530_rf_channel_set(CC2530_RF_CHANNEL);
TXPOWER = CC2530_RF_TX_POWER;
RF_TX_LED_OFF();
RF_RX_LED_OFF();
@ -486,24 +654,148 @@ off(void)
static radio_result_t
get_value(radio_param_t param, radio_value_t *value)
{
if(!value) {
return RADIO_RESULT_INVALID_VALUE;
}
switch(param) {
case RADIO_PARAM_POWER_MODE:
*value = RXENABLE == 0 ? RADIO_POWER_MODE_OFF : RADIO_POWER_MODE_ON;
return RADIO_RESULT_OK;
case RADIO_PARAM_CHANNEL:
*value = (radio_value_t)get_channel();
return RADIO_RESULT_OK;
case RADIO_PARAM_PAN_ID:
*value = get_pan_id();
return RADIO_RESULT_OK;
case RADIO_PARAM_16BIT_ADDR:
*value = get_short_addr();
return RADIO_RESULT_OK;
case RADIO_PARAM_RX_MODE:
*value = 0;
if(FRMFILT0 & FRMFILT0_FRAME_FILTER_EN) {
*value |= RADIO_RX_MODE_ADDRESS_FILTER;
}
if(FRMCTRL0 & FRMCTRL0_AUTOACK) {
*value |= RADIO_RX_MODE_AUTOACK;
}
return RADIO_RESULT_OK;
case RADIO_PARAM_TXPOWER:
*value = get_tx_power();
return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
*value = get_cca_threshold();
return RADIO_RESULT_OK;
case RADIO_PARAM_RSSI:
*value = get_rssi();
return RADIO_RESULT_OK;
case RADIO_CONST_CHANNEL_MIN:
*value = CC2530_RF_CHANNEL_MIN;
return RADIO_RESULT_OK;
case RADIO_CONST_CHANNEL_MAX:
*value = CC2530_RF_CHANNEL_MAX;
return RADIO_RESULT_OK;
case RADIO_CONST_TXPOWER_MIN:
*value = OUTPUT_POWER_MIN;
return RADIO_RESULT_OK;
case RADIO_CONST_TXPOWER_MAX:
*value = OUTPUT_POWER_MAX;
return RADIO_RESULT_OK;
default:
return RADIO_RESULT_NOT_SUPPORTED;
}
}
/*---------------------------------------------------------------------------*/
static radio_result_t
set_value(radio_param_t param, radio_value_t value)
{
switch(param) {
case RADIO_PARAM_POWER_MODE:
if(value == RADIO_POWER_MODE_ON) {
on();
return RADIO_RESULT_OK;
}
if(value == RADIO_POWER_MODE_OFF) {
off();
return RADIO_RESULT_OK;
}
return RADIO_RESULT_INVALID_VALUE;
case RADIO_PARAM_CHANNEL:
if(value < CC2530_RF_CHANNEL_MIN || value > CC2530_RF_CHANNEL_MAX) {
return RADIO_RESULT_INVALID_VALUE;
}
if(set_channel(value) == CC2530_RF_CHANNEL_SET_ERROR) {
return RADIO_RESULT_ERROR;
}
return RADIO_RESULT_OK;
case RADIO_PARAM_PAN_ID:
set_pan_id(value & 0xffff);
return RADIO_RESULT_OK;
case RADIO_PARAM_16BIT_ADDR:
set_short_addr(value & 0xffff);
return RADIO_RESULT_OK;
case RADIO_PARAM_RX_MODE:
if(value & ~(RADIO_RX_MODE_ADDRESS_FILTER |
RADIO_RX_MODE_AUTOACK)) {
return RADIO_RESULT_INVALID_VALUE;
}
set_frame_filtering((value & RADIO_RX_MODE_ADDRESS_FILTER) != 0);
set_auto_ack((value & RADIO_RX_MODE_AUTOACK) != 0);
return RADIO_RESULT_OK;
case RADIO_PARAM_TXPOWER:
if(value < OUTPUT_POWER_MIN || value > OUTPUT_POWER_MAX) {
return RADIO_RESULT_INVALID_VALUE;
}
set_tx_power(value);
return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
set_cca_threshold(value);
return RADIO_RESULT_OK;
default:
return RADIO_RESULT_NOT_SUPPORTED;
}
}
/*---------------------------------------------------------------------------*/
static radio_result_t
get_object(radio_param_t param, void *dest, size_t size)
{
uint8_t *target;
int i;
if(param == RADIO_PARAM_64BIT_ADDR) {
if(size != 8 || !dest) {
return RADIO_RESULT_INVALID_VALUE;
}
target = dest;
for(i = 0; i < 8; i++) {
target[i] = ((uint8_t *)&EXT_ADDR0)[7 - i] & 0xFF;
}
return RADIO_RESULT_OK;
}
return RADIO_RESULT_NOT_SUPPORTED;
}
/*---------------------------------------------------------------------------*/
static radio_result_t
set_object(radio_param_t param, const void *src, size_t size)
{
int i;
if(param == RADIO_PARAM_64BIT_ADDR) {
if(size != 8 || !src) {
return RADIO_RESULT_INVALID_VALUE;
}
for(i = 0; i < 8; i++) {
((uint8_t *)&EXT_ADDR0)[i] = ((uint8_t *)src)[7 - i];
}
return RADIO_RESULT_OK;
}
return RADIO_RESULT_NOT_SUPPORTED;
}
/*---------------------------------------------------------------------------*/

3
cpu/cc253x/dev/cc2530-rf.h
View file

@ -120,9 +120,6 @@
/*---------------------------------------------------------------------------*/
extern const struct radio_driver cc2530_rf_driver;
/*---------------------------------------------------------------------------*/
int8_t cc2530_rf_channel_set(uint8_t channel);
#define cc2530_rf_channel_get() ((uint8_t)((FREQCTRL + 44) / 5))
uint8_t cc2530_rf_power_set(uint8_t new_power);
void cc2530_rf_set_addr(uint16_t pan);
/*---------------------------------------------------------------------------*/
#endif /* CC2530_RF_H_ */

3
cpu/cc253x/sfr-bits.h
View file

@ -184,6 +184,9 @@
/*---------------------------------------------------------------------------
* Radio Register Bits
*---------------------------------------------------------------------------*/
/* FRMFILT0 */
#define FRMFILT0_FRAME_FILTER_EN 0x01
/* FRMCTRL0 */
#define FRMCTRL0_APPEND_DATA_MODE 0x80
#define FRMCTRL0_AUTOCRC 0x40

27
platform/cc2530dk/contiki-main.c
View file

@ -9,6 +9,7 @@
#include "dev/io-arch.h"
#include "dev/dma.h"
#include "dev/cc2530-rf.h"
#include "dev/radio.h"
#include "dev/watchdog.h"
#include "dev/clock-isr.h"
#include "dev/port2.h"
@ -79,9 +80,11 @@ fade(int l) CC_NON_BANKED
}
/*---------------------------------------------------------------------------*/
static void
set_rime_addr(void) CC_NON_BANKED
set_rf_params(void) CC_NON_BANKED
{
char i;
uint16_t short_addr;
uint8_t ext_addr[8];
#if CC2530_CONF_MAC_FROM_PRIMARY
__xdata unsigned char *macp = &X_IEEE_ADDR;
@ -114,8 +117,12 @@ set_rime_addr(void) CC_NON_BANKED
FMAP = CC2530_LAST_FLASH_BANK;
#endif
for(i = (LINKADDR_SIZE - 1); i >= 0; --i) {
linkaddr_node_addr.u8[i] = *macp;
/*
* Read IEEE address from flash, store in ext_addr.
* Invert endianness (from little to big endian)
*/
for(i = 7; i >= 0; --i) {
ext_addr[i] = *macp;
macp++;
}
@ -125,6 +132,12 @@ set_rime_addr(void) CC_NON_BANKED
ENABLE_INTERRUPTS();
#endif
short_addr = ext_addr[7];
short_addr |= ext_addr[6] << 8;
/* Populate linkaddr_node_addr. Maintain endianness */
memcpy(&linkaddr_node_addr, &ext_addr[8 - LINKADDR_SIZE], LINKADDR_SIZE);
/* Now the address is stored MSB first */
#if STARTUP_CONF_VERBOSE
PUTSTRING("Rime configured with address ");
@ -136,7 +149,11 @@ set_rime_addr(void) CC_NON_BANKED
PUTCHAR('\n');
#endif
cc2530_rf_set_addr(IEEE802154_PANID);
/* Write params to RF registers */
NETSTACK_RADIO.set_value(RADIO_PARAM_PAN_ID, IEEE802154_PANID);
NETSTACK_RADIO.set_value(RADIO_PARAM_16BIT_ADDR, short_addr);
NETSTACK_RADIO.set_value(RADIO_PARAM_CHANNEL, CC2530_RF_CHANNEL);
NETSTACK_RADIO.set_object(RADIO_PARAM_64BIT_ADDR, ext_addr, 8);
return;
}
/*---------------------------------------------------------------------------*/
@ -235,7 +252,7 @@ main(void) CC_NON_BANKED
/* initialize the netstack */
netstack_init();
set_rime_addr();
set_rf_params();
#if BUTTON_SENSOR_ON || ADC_SENSOR_ON
process_start(&sensors_process, NULL);