/**
* @brief Starts continuous transmission on current channel
*/
void tfa_continuous_tx_start(continuous_tx_mode_t tx_mode)
{
uint8_t txcwdata[127];
pal_trx_bit_write(SR_TX_AUTO_CRC_ON, TX_AUTO_CRC_DISABLE);
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
pal_trx_reg_write(0x0176, 0x0F); /*TST_CTRL_DIGI*/
/* Here: use 2MBPS mode for PSD measurements.
* Omit the two following lines, if 250k mode is desired for PRBS mode. */
pal_trx_bit_write(SR_OQPSK_DATA_RATE, ALTRATE_2MBPS);
pal_trx_reg_write(RG_RX_CTRL, 0xA7);
if (tx_mode == CW_MODE)
{
txcwdata[0] = 1; // length
// Step 11 - frame buffer write access
txcwdata[1] = 0x00; // f=fch-0.5 MHz; set value to 0xFF for f=fch+0.5MHz
pal_trx_frame_write(txcwdata, 2);
}
else // PRBS mode
{
txcwdata[0] = 127; // = max length
for (uint8_t i = 1; i < 128; i++)
{
txcwdata[i] = (uint8_t)rand();
}
pal_trx_frame_write(txcwdata, 128);
}
pal_trx_reg_write(RG_PART_NUM, 0x54);
pal_trx_reg_write(RG_PART_NUM, 0x46);
set_trx_state(CMD_PLL_ON);
PAL_SLP_TR_HIGH();
PAL_SLP_TR_LOW();
}
/*
* \brief Starts continuous transmission on current channel
*
* \param tx_mode Mode of continuous transmission (CW or PRBS)
* \param random_content Use random content if true
*
* The comment 'step #' refers to the step mentioned in the RF212's datasheet.
*/
void tfa_continuous_tx_start(continuous_tx_mode_t tx_mode, bool random_content)
{
uint8_t txcwdata[128];
uint8_t i;
// step 3,6: Channel is assumed to be set before
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
// step 7: Enable continuous transmission - step #1
pal_trx_reg_write(0x36, 0x0F);
if (tx_mode == CW_MODE)
{
// step 8: Register access: CW at Fc +/- 0.1 MHz
pal_trx_reg_write(RG_TRX_CTRL_2, 0x0A); // 400 kbit mode, step 8
txcwdata[0] = 1; // length
txcwdata[1] = 0;
// step 9: Frame buffer access
pal_trx_frame_write(txcwdata, 2);
}
else // PRBS mode
{
// step 8:
/*
* Step 8 is not explicitly written here, because the proper
* value is set during reset or by updating the Channel Page.
* After finishing CW/PRBS another reset is performed with
* parameter set_default_pib set to false, which restores the
* original value based on the current Channel Page.
*
* I.e., in order to use PRBS with a specific data rate,
* the Channel Page needs to be udpated before starting PRBS.
*/
txcwdata[0] = 127; // = max length
for (i = 1; i < 128; i++)
{
if (random_content)
{
txcwdata[i] = (uint8_t)rand();
}
else
{
txcwdata[i] = 0;
}
}
// step 9: Frame buffer access
pal_trx_frame_write(txcwdata, 128);
}
// step 10: Enable continuous transmission - step #2
pal_trx_reg_write(RG_PART_NUM, 0x54);
// step 11: Enable continuous transmission - step #3
pal_trx_reg_write(RG_PART_NUM, 0x46);
// step 12, 13: Stwitch PLL on
set_trx_state(CMD_PLL_ON);
// step 14: Initiate transmission using SLP_TR line
PAL_SLP_TR_HIGH();
PAL_SLP_TR_LOW();
}
void tal_tx_beacon(frame_info_t *tx_frame)
{
tal_trx_status_t trx_status;
/* Set pointer to actual mpdu to be downloaded to the transceiver. */
uint8_t *tal_beacon_to_tx = tx_frame->mpdu;
/* Avoid that the beacon is transmitted while other transmision is
*on-going. */
if (tal_state == TAL_TX_AUTO) {
Assert(
"trying to transmit beacon while ongoing transmission" ==
0);
return;
}
/* Send the pre-created beacon frame to the transceiver. */
do {
trx_status = set_trx_state(CMD_PLL_ON);
#if (_DEBUG_ > 1)
if (trx_status != PLL_ON) {
Assert("PLL_ON failed for beacon transmission" == 0);
}
#endif
} while (trx_status != PLL_ON);
/* \TODO wait for talbeaconTxTime */
pal_trx_irq_dis();
/* Toggle the SLP_TR pin triggering transmission. */
PAL_SLP_TR_HIGH();
PAL_WAIT_65_NS();
PAL_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of pal_trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
pal_trx_frame_write(tal_beacon_to_tx, tal_beacon_to_tx[0] - 1);
tal_beacon_transmission = true;
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
#ifdef TX_OCTET_COUNTER
tal_tx_octet_cnt += PHY_OVERHEAD + LENGTH_FIELD_LEN +
tal_beacon_to_tx[0];
#endif
}
/*
* \brief Starts continuous transmission on current channel
*
* \param tx_mode Mode of continuous transmission (CW or PRBS)
* \param random_content Use random content if true
*/
void tfa_continuous_tx_start(continuous_tx_mode_t tx_mode, bool random_content)
{
uint8_t txcwdata[128];
pal_trx_reg_write(RG_TRX_STATE, CMD_TRX_OFF);
pal_trx_bit_write(SR_TX_AUTO_CRC_ON, TX_AUTO_CRC_DISABLE);
pal_trx_reg_write(0x36, 0x0F); /* TST_CTRL_DIGI */
if (tx_mode == CW_MODE)
{
txcwdata[0] = 1; // step 9
txcwdata[1] = 0;
pal_trx_frame_write(txcwdata, 2);
// Step 10
pal_trx_reg_write(0x3D, 0x80); /* Configure continuous Tx (2) */
}
else // PRBS mode
{
txcwdata[0] = 127; // = max length
for (uint8_t i = 1; i < 128; i++)
{
if (random_content)
{
txcwdata[i] = (uint8_t)rand();
}
else
{
txcwdata[i] = 0;
}
}
pal_trx_frame_write(txcwdata, 128);
pal_trx_reg_write(0x3D, 0x00); /* Configure continuous Tx (2) */
}
// set tst pin to high
TST_PORT_HIGH();
set_trx_state(CMD_PLL_ON);
PAL_SLP_TR_HIGH();
PAL_SLP_TR_LOW();
}
/**
* \brief Transmits the frame over-the-air
*/
static void tx_frame(void)
{
tal_trx_status_t trx_status;
/*
* Trigger transmission
* In case of an ongoing reception,
* the incoming frame is handled first within ISR.
*/
do
{
trx_status = set_trx_state(CMD_TX_ARET_ON);
}
while (trx_status != TX_ARET_ON);
pal_trx_irq_dis();
/* Toggle the SLP_TR pin triggering transmission. */
PAL_SLP_TR_HIGH();
PAL_WAIT_65_NS();
PAL_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of pal_trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* + 1 extra octet (see datasheet)
* - 2 octets FCS
*/
pal_trx_frame_write(tal_frame_to_tx, tal_frame_to_tx[0]);
tal_state = TAL_TX_AUTO;
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
#ifdef TX_OCTET_COUNTER
tal_tx_octet_cnt += PHY_OVERHEAD + LENGTH_FIELD_LEN + tal_frame_to_tx[0];
#endif
}
void tal_tx_beacon(frame_info_t *tx_frame)
{
tal_trx_status_t trx_status;
/* Set pointer to actual mpdu to be downloaded to the transceiver. */
uint8_t *tal_beacon_to_tx = tx_frame->mpdu;
/*
* Avoid that the beacon is transmitted while transmitting
* a frame using slotted CSMA.
*/
if ((tal_csma_state == FRAME_SENDING_WITH_ACK) ||
(tal_csma_state == FRAME_SENDING_NO_ACK) ||
(tal_csma_state == WAITING_FOR_ACK)) {
Assert(
"trying to transmit beacon while ongoing transmission" ==
0);
return;
}
/* Send the pre-created beacon frame to the transceiver. */
/* debug pin to switch on: define ENABLE_DEBUG_PINS, pal_config.h */
PIN_BEACON_START();
/* \TODO wait for talbeaconTxTime */
do {
trx_status = set_trx_state(CMD_FORCE_PLL_ON);
#if (_DEBUG_ > 1)
if (trx_status != PLL_ON) {
Assert("PLL_ON failed for beacon transmission" == 0);
}
#endif
} while (trx_status != PLL_ON);
pal_trx_irq_dis();
/* Toggle the SLP_TR pin triggering transmission. */
PAL_SLP_TR_HIGH();
PAL_WAIT_65_NS();
PAL_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of pal_trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
pal_trx_frame_write(tal_beacon_to_tx, tal_beacon_to_tx[0] - 1);
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
tal_state = TAL_TX_BEACON;
}
/*
* \brief Sends frame
*
* \param use_csma Flag indicating if CSMA is requested
* \param tx_retries Flag indicating if transmission retries are requested
* by the MAC layer
*/
void send_frame(csma_mode_t csma_mode, bool tx_retries)
{
tal_trx_status_t trx_status;
#ifdef BEACON_SUPPORT
/* Handle frame transmission in slotted CSMA via basic mode */
if (tal_csma_state != CSMA_IDLE) {
do {
trx_status = set_trx_state(CMD_PLL_ON);
} while (trx_status != PLL_ON);
tal_state = TAL_TX_BASIC;
} else
#endif
{
/* Configure tx according to tx_retries */
if (tx_retries) {
pal_trx_bit_write(SR_MAX_FRAME_RETRIES,
tal_pib.MaxFrameRetries);
} else {
pal_trx_bit_write(SR_MAX_FRAME_RETRIES, 0);
}
/* Configure tx according to csma usage */
if ((csma_mode == NO_CSMA_NO_IFS) ||
(csma_mode == NO_CSMA_WITH_IFS)) {
/*
* RF230B does not support "no" CSMA mode,
* therefore use shortest CSMA mode: CCA w/o backoff
*/
pal_trx_bit_write(SR_MIN_BE, 0x00);
pal_trx_bit_write(SR_MAX_CSMA_RETRIES, 0);
} else {
pal_trx_bit_write(SR_MIN_BE, tal_pib.MinBE);
pal_trx_bit_write(SR_MAX_CSMA_RETRIES,
tal_pib.MaxCSMABackoffs);
/*
* Handle interframe spacing
* Reduce IFS duration, since RF230B does CCA
*/
if (csma_mode == NO_CSMA_WITH_IFS) {
if (last_frame_length > aMaxSIFSFrameSize) {
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(
macMinLIFSPeriod_def -
CCA_DURATION_SYM)
- IRQ_PROCESSING_DLY_US -
PRE_TX_DURATION_US);
} else {
/*
* No delay required, since processing
*delay and CCA_DURATION_SYM
* delay the handling enough.
*/
}
}
}
do {
trx_status = set_trx_state(CMD_TX_ARET_ON);
} while (trx_status != TX_ARET_ON);
tal_state = TAL_TX_AUTO;
}
pal_trx_irq_dis();
/* Toggle the SLP_TR pin triggering transmission. */
PAL_SLP_TR_HIGH();
PAL_WAIT_65_NS();
PAL_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of pal_trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
pal_trx_frame_write(tal_frame_to_tx, tal_frame_to_tx[0] - 1);
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
}
/**
* \brief Sends frame
*
* \param use_csma Flag indicating if CSMA is requested
* \param tx_retries Flag indicating if transmission retries are requested
* by the MAC layer
*/
void send_frame(csma_mode_t csma_mode, bool tx_retries)
{
tal_trx_status_t trx_status;
/* Configure tx according to tx_retries */
if (tx_retries)
{
pal_trx_bit_write(SR_MAX_FRAME_RETRIES, tal_pib.MaxFrameRetries);
}
else
{
pal_trx_bit_write(SR_MAX_FRAME_RETRIES, 0);
}
/* Configure tx according to csma usage */
if ((csma_mode == NO_CSMA_NO_IFS) || (csma_mode == NO_CSMA_WITH_IFS))
{
pal_trx_bit_write(SR_MAX_CSMA_RETRIES, 7); // immediate transmission
}
else
{
pal_trx_bit_write(SR_MAX_CSMA_RETRIES, tal_pib.MaxCSMABackoffs);
}
do
{
trx_status = set_trx_state(CMD_TX_ARET_ON);
}
while (trx_status != TX_ARET_ON);
pal_trx_irq_dis();
/* Handle interframe spacing */
if (csma_mode == NO_CSMA_WITH_IFS)
{
if (last_frame_length > aMaxSIFSFrameSize)
{
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(macMinLIFSPeriod_def)
- TRX_IRQ_DELAY_US - PRE_TX_DURATION_US);
last_frame_length = 0;
}
else
{
pal_timer_delay(TAL_CONVERT_SYMBOLS_TO_US(macMinSIFSPeriod_def)
- TRX_IRQ_DELAY_US - PRE_TX_DURATION_US);
last_frame_length = 0;
}
}
/* Toggle the SLP_TR pin triggering transmission. */
PAL_SLP_TR_HIGH();
PAL_WAIT_65_NS();
PAL_SLP_TR_LOW();
/*
* Send the frame to the transceiver.
* Note: The PhyHeader is the first byte of the frame to
* be sent to the transceiver and this contains the frame
* length.
* The actual length of the frame to be downloaded
* (parameter two of pal_trx_frame_write)
* is
* 1 octet frame length octet
* + n octets frame (i.e. value of frame_tx[0])
* - 2 octets FCS
*/
pal_trx_frame_write(tal_frame_to_tx, tal_frame_to_tx[0] - 1);
tal_state = TAL_TX_AUTO;
#ifndef NON_BLOCKING_SPI
pal_trx_irq_en();
#endif
}
