CC2420: Macros as functions for saving program memory
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kkrentz
parent
9e266acd9c
commit
b89d37d301
@ -124,13 +124,6 @@ int cc2420_packets_seen, cc2420_packets_read;
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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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rtimer_clock_t t0; \
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t0 = RTIMER_NOW(); \
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while(!(cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + (max_time))); \
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} while(0)
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volatile uint8_t cc2420_sfd_counter;
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volatile uint16_t cc2420_sfd_start_time;
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volatile uint16_t cc2420_sfd_end_time;
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@ -286,17 +279,58 @@ strobe(enum cc2420_register regname)
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CC2420_STROBE(regname);
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}
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/*---------------------------------------------------------------------------*/
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static uint16_t
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getreg(enum cc2420_register regname)
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{
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uint16_t reg;
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CC2420_READ_REG(regname, reg);
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return reg;
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}
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/*---------------------------------------------------------------------------*/
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static void
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setreg(enum cc2420_register regname, uint16_t value)
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{
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CC2420_WRITE_REG(regname, value);
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}
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/*---------------------------------------------------------------------------*/
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static void
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read_ram(uint8_t *buffer, uint16_t adr, uint16_t count)
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{
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CC2420_READ_RAM(buffer, adr, count);
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}
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/*---------------------------------------------------------------------------*/
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static void
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write_ram(uint8_t *buffer, uint16_t adr, uint16_t count)
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{
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CC2420_WRITE_RAM(buffer, adr, count);
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}
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/*---------------------------------------------------------------------------*/
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static void
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write_fifo_buf(const uint8_t *buffer, uint16_t count)
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{
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CC2420_WRITE_FIFO_BUF(buffer, count);
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t
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get_status(void)
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{
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uint8_t status;
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CC2420_GET_STATUS(status);
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return status;
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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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{
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CC2420_READ_FIFO_BUF(buf, len);
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}
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/*---------------------------------------------------------------------------*/
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static void
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getrxbyte(uint8_t *byte)
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{
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CC2420_READ_FIFO_BYTE(*byte);
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CC2420_READ_FIFO_BYTE(byte);
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}
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/*---------------------------------------------------------------------------*/
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static void
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flushrx(void)
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{
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@ -310,24 +344,22 @@ flushrx(void)
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}
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}
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/*---------------------------------------------------------------------------*/
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static unsigned int
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status(void)
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static void
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wait_for_status(uint8_t status_bit)
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{
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uint8_t status;
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CC2420_GET_STATUS(status);
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return status;
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rtimer_clock_t t0;
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t0 = RTIMER_NOW();
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while(!(get_status() & status_bit)
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&& RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + (RTIMER_SECOND / 10)));
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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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wait_for_transmission(void)
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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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rtimer_clock_t t0;
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t0 = RTIMER_NOW();
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while((get_status() & BV(CC2420_TX_ACTIVE))
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&& RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + (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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@ -350,7 +382,7 @@ 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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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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wait_for_transmission();
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ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
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strobe(CC2420_SRFOFF);
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@ -376,26 +408,6 @@ static void RELEASE_LOCK(void) {
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locked--;
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}
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/*---------------------------------------------------------------------------*/
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static unsigned
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getreg(enum cc2420_register regname)
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{
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unsigned reg;
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CC2420_READ_REG(regname, reg);
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return reg;
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}
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/*---------------------------------------------------------------------------*/
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static void
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setreg(enum cc2420_register regname, unsigned value)
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{
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CC2420_WRITE_REG(regname, 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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@ -529,11 +541,11 @@ 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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write_ram(&sfd_timestamp, CC2420RAM_TXFIFO + payload_len - 1, 2);
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write_ram((uint8_t *) &sfd_timestamp, CC2420RAM_TXFIFO + payload_len - 1, 2);
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}
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}
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if(!(status() & BV(CC2420_TX_ACTIVE))) {
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if(!(get_status() & BV(CC2420_TX_ACTIVE))) {
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/* SFD went high but we are not transmitting. This means that
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we just started receiving a packet, so we drop the
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transmission. */
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@ -546,7 +558,7 @@ 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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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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wait_for_transmission();
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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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@ -602,8 +614,8 @@ cc2420_prepare(const void *payload, unsigned short payload_len)
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strobe(CC2420_SFLUSHTX);
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total_len = payload_len + CHECKSUM_LEN;
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CC2420_WRITE_FIFO_BUF(&total_len, 1);
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CC2420_WRITE_FIFO_BUF(payload, payload_len);
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write_fifo_buf(&total_len, 1);
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write_fifo_buf(payload, payload_len);
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RELEASE_LOCK();
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return 0;
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@ -637,7 +649,7 @@ cc2420_off(void)
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we don't actually switch the radio off now, but signal that the
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driver should switch off the radio once the packet has been
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received and processed, by setting the 'lock_off' variable. */
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if(status() & BV(CC2420_TX_ACTIVE)) {
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if(get_status() & BV(CC2420_TX_ACTIVE)) {
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lock_off = 1;
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} else {
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off();
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@ -688,7 +700,7 @@ cc2420_set_channel(int c)
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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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wait_for_not_status(BV(CC2420_TX_ACTIVE));
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wait_for_transmission();
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setreg(CC2420_FSCTRL, f);
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@ -719,11 +731,11 @@ cc2420_set_pan_addr(unsigned pan,
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tmp[0] = pan & 0xff;
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tmp[1] = pan >> 8;
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write_ram(&tmp, CC2420RAM_PANID, 2);
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write_ram((uint8_t *) &tmp, CC2420RAM_PANID, 2);
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tmp[0] = addr & 0xff;
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tmp[1] = addr >> 8;
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write_ram(&tmp, CC2420RAM_SHORTADDR, 2);
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write_ram((uint8_t *) &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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@ -133,7 +133,7 @@ void cc2420_set_cca_threshold(int value);
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CC2420_SPI_ENABLE(); \
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SPI_WRITE(CC2420_RXFIFO | 0x40); \
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(void)SPI_RXBUF; \
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SPI_READ(data); \
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SPI_READ(*data); \
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clock_delay(1); \
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CC2420_SPI_DISABLE(); \
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} while(0)
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