Removed the unused function cc2420_cca_valid and replaced some macros
with functions in CC2420. This reduces the code size with over 400 bytes.
This commit is contained in:
Niclas Finne
parent
207f1987ee
commit
271ac4413f
1 changed files with 46 additions and 41 deletions
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@ -137,7 +137,7 @@ int cc2420_authority_level_of_sender;
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int cc2420_packets_seen, cc2420_packets_read;
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static uint8_t volatile pending;
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/* static uint8_t volatile pending; */
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#define BUSYWAIT_UNTIL(cond, max_time) \
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do { \
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@ -294,6 +294,12 @@ const struct radio_driver cc2420_driver =
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};
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/*---------------------------------------------------------------------------*/
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static void
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strobe(enum cc2420_register regname)
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{
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CC2420_STROBE(regname);
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}
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/*---------------------------------------------------------------------------*/
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static void
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getrxdata(void *buf, int len)
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@ -310,15 +316,12 @@ flushrx(void)
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{
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uint8_t dummy;
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CC2420_READ_FIFO_BYTE(dummy);
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CC2420_STROBE(CC2420_SFLUSHRX);
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CC2420_STROBE(CC2420_SFLUSHRX);
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}
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/*---------------------------------------------------------------------------*/
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static void
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strobe(enum cc2420_register regname)
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{
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CC2420_STROBE(regname);
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getrxbyte(&dummy);
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strobe(CC2420_SFLUSHRX);
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strobe(CC2420_SFLUSHRX);
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if(dummy) {
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/* avoid unused variable compiler warning */
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}
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}
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/*---------------------------------------------------------------------------*/
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static unsigned int
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@ -329,6 +332,18 @@ status(void)
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return status;
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}
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/*---------------------------------------------------------------------------*/
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static void
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wait_for_status(unsigned int mask)
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{
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BUSYWAIT_UNTIL((status() & mask), RTIMER_SECOND / 10);
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}
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/*---------------------------------------------------------------------------*/
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static void
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wait_for_not_status(unsigned int mask)
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{
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BUSYWAIT_UNTIL(!(status() & mask), RTIMER_SECOND / 10);
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t locked, lock_on, lock_off;
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static void
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@ -337,7 +352,7 @@ on(void)
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CC2420_ENABLE_FIFOP_INT();
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strobe(CC2420_SRXON);
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BUSYWAIT_UNTIL(status() & (BV(CC2420_XOSC16M_STABLE)), RTIMER_SECOND / 100);
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wait_for_status(BV(CC2420_XOSC16M_STABLE));
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ENERGEST_ON(ENERGEST_TYPE_LISTEN);
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receive_on = 1;
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@ -349,7 +364,7 @@ off(void)
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receive_on = 0;
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/* Wait for transmission to end before turning radio off. */
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BUSYWAIT_UNTIL(!(status() & BV(CC2420_TX_ACTIVE)), RTIMER_SECOND / 10);
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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
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strobe(CC2420_SRFOFF);
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@ -390,6 +405,12 @@ setreg(enum cc2420_register regname, unsigned value)
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}
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/*---------------------------------------------------------------------------*/
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static void
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write_ram(const void *buf, uint16_t addr, int count)
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{
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CC2420_WRITE_RAM(buf, addr, count);
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}
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/*---------------------------------------------------------------------------*/
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static void
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set_txpower(uint8_t power)
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{
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uint16_t reg;
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@ -476,7 +497,6 @@ static int
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cc2420_transmit(unsigned short payload_len)
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{
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int i, txpower;
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uint8_t total_len;
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#if CC2420_CONF_CHECKSUM
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uint16_t checksum;
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#endif /* CC2420_CONF_CHECKSUM */
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@ -491,8 +511,6 @@ cc2420_transmit(unsigned short payload_len)
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set_txpower(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) - 1);
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}
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total_len = payload_len + AUX_LEN;
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/* The TX FIFO can only hold one packet. Make sure to not overrun
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* FIFO by waiting for transmission to start here and synchronizing
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* with the CC2420_TX_ACTIVE check in cc2420_send.
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@ -508,7 +526,7 @@ cc2420_transmit(unsigned short payload_len)
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#if WITH_SEND_CCA
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strobe(CC2420_SRXON);
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BUSYWAIT_UNTIL(status() & BV(CC2420_RSSI_VALID), RTIMER_SECOND / 10);
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wait_for_status(BV(CC2420_RSSI_VALID));
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strobe(CC2420_STXONCCA);
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#else /* WITH_SEND_CCA */
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strobe(CC2420_STXON);
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@ -521,7 +539,7 @@ cc2420_transmit(unsigned short payload_len)
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if(packetbuf_attr(PACKETBUF_ATTR_PACKET_TYPE) ==
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PACKETBUF_ATTR_PACKET_TYPE_TIMESTAMP) {
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/* Write timestamp to last two bytes of packet in TXFIFO. */
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CC2420_WRITE_RAM(&sfd_timestamp, CC2420RAM_TXFIFO + payload_len - 1, 2);
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write_ram(&sfd_timestamp, CC2420RAM_TXFIFO + payload_len - 1, 2);
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}
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}
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@ -538,7 +556,7 @@ cc2420_transmit(unsigned short payload_len)
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ENERGEST_ON(ENERGEST_TYPE_TRANSMIT);
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/* We wait until transmission has ended so that we get an
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accurate measurement of the transmission time.*/
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BUSYWAIT_UNTIL(!(status() & BV(CC2420_TX_ACTIVE)), RTIMER_SECOND / 10);
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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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#ifdef ENERGEST_CONF_LEVELDEVICE_LEVELS
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ENERGEST_OFF_LEVEL(ENERGEST_TYPE_TRANSMIT,cc2420_get_txpower());
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@ -685,10 +703,10 @@ cc2420_set_channel(int c)
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/*
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* Writing RAM requires crystal oscillator to be stable.
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*/
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BUSYWAIT_UNTIL((status() & (BV(CC2420_XOSC16M_STABLE))), RTIMER_SECOND / 10);
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wait_for_status(BV(CC2420_XOSC16M_STABLE));
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/* Wait for any transmission to end. */
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BUSYWAIT_UNTIL(!(status() & BV(CC2420_TX_ACTIVE)), RTIMER_SECOND / 10);
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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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setreg(CC2420_FSCTRL, f);
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@ -715,22 +733,22 @@ cc2420_set_pan_addr(unsigned pan,
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/*
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* Writing RAM requires crystal oscillator to be stable.
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*/
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BUSYWAIT_UNTIL(status() & (BV(CC2420_XOSC16M_STABLE)), RTIMER_SECOND / 10);
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wait_for_status(BV(CC2420_XOSC16M_STABLE));
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tmp[0] = pan & 0xff;
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tmp[1] = pan >> 8;
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CC2420_WRITE_RAM(&tmp, CC2420RAM_PANID, 2);
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write_ram(&tmp, CC2420RAM_PANID, 2);
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tmp[0] = addr & 0xff;
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tmp[1] = addr >> 8;
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CC2420_WRITE_RAM(&tmp, CC2420RAM_SHORTADDR, 2);
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write_ram(&tmp, CC2420RAM_SHORTADDR, 2);
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if(ieee_addr != NULL) {
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uint8_t tmp_addr[8];
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/* LSB first, MSB last for 802.15.4 addresses in CC2420 */
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for (f = 0; f < 8; f++) {
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tmp_addr[7 - f] = ieee_addr[f];
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}
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CC2420_WRITE_RAM(tmp_addr, CC2420RAM_IEEEADDR, 8);
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write_ram(tmp_addr, CC2420RAM_IEEEADDR, 8);
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}
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RELEASE_LOCK();
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}
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@ -745,7 +763,7 @@ cc2420_interrupt(void)
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process_poll(&cc2420_process);
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last_packet_timestamp = cc2420_sfd_start_time;
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pending++;
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/* pending++; */
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cc2420_packets_seen++;
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return 1;
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}
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@ -790,7 +808,7 @@ cc2420_read(void *buf, unsigned short bufsize)
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return 0;
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}*/
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pending = 0;
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/* pending = 0; */
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GET_LOCK();
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@ -906,7 +924,7 @@ cc2420_rssi(void)
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radio_was_off = 1;
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cc2420_on();
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}
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BUSYWAIT_UNTIL(status() & BV(CC2420_RSSI_VALID), RTIMER_SECOND / 100);
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wait_for_status(BV(CC2420_RSSI_VALID));
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rssi = (int)((signed char)getreg(CC2420_RSSI));
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@ -925,19 +943,6 @@ detected_energy(void)
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}
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*/
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/*---------------------------------------------------------------------------*/
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int
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cc2420_cca_valid(void)
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{
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int valid;
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if(locked) {
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return 1;
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}
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GET_LOCK();
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valid = !!(status() & BV(CC2420_RSSI_VALID));
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RELEASE_LOCK();
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return valid;
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}
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/*---------------------------------------------------------------------------*/
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static int
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cc2420_cca(void)
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{
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@ -967,7 +972,7 @@ cc2420_cca(void)
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return 1;
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}
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BUSYWAIT_UNTIL(status() & BV(CC2420_RSSI_VALID), RTIMER_SECOND / 100);
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wait_for_status(BV(CC2420_RSSI_VALID));
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cca = CC2420_CCA_IS_1;
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