static void
vnRFtaskRxTx (void *parameter)
{
u_int32_t t;
u_int8_t status;
portTickType last_ticks = 0, jam_ticks = 0;
if (!PtInitNRF ())
return;
for (;;)
{
// sprintf(msg, "Senden ...\n");
/* check if TX strength changed */
if (nrf_powerlevel_current != nrf_powerlevel_last)
{
nRFAPI_SetTxPower (nrf_powerlevel_current);
nrf_powerlevel_last = nrf_powerlevel_current;
}
status = nRFAPI_GetFifoStatus ();
/* living in a paranoid world ;-) */
if (status & FIFO_TX_FULL)
nRFAPI_FlushTX ();
/* transmit current lamp value */ // schickt regelmässig ein Packet broadcast
if (env.e.mcu_id && ((xTaskGetTickCount () - last_ticks) > jam_ticks))
{
memset (&rfpkg, 0, sizeof (rfpkg));
rfpkg.cmd = RF_CMD_SET_VALUES;
rfpkg.wmcu_id = env.e.mcu_id;
rfpkg.mac = 0xffff; /* send to all MACs */
for (t = 0; t < RF_PAYLOAD_SIZE; t++)
rfpkg.payload[t] =
(last_lamp_val[t * 2] & 0xf) |
(last_lamp_val[(t * 2) + 1] << 4);
// random delay to avoid collisions
PtInternalTransmit (&rfpkg);
// prepare next jam transmission
last_ticks = xTaskGetTickCount ();
jam_ticks =
(RndNumber () % (jam_density_ms * 2)) / portTICK_RATE_MS;
}
vTaskDelay (5 / portTICK_RATE_MS);
/* did I already mention the paranoid world thing? */
nRFAPI_ClearIRQ (MASK_IRQ_FLAGS);
}
}
unsigned char nRFAPI_Init(
unsigned char channel,
const unsigned char *mac,
unsigned char mac_size,
unsigned char features
)
{
unsigned char i;
// init lower layer
nRFCMD_Init();
// check validity
if( mac_size<3 ||
mac_size>5 ||
!nRFAPI_DetectChip()
)
return 0;
// update mac
nRFAPI_SetSizeMac(mac_size);
nRFAPI_SetTxMAC(mac,mac_size);
// enables pipe
nRFAPI_SetRxMAC(mac,mac_size,0);
nRFAPI_PipesEnable(ERX_P0);
nRFAPI_PipesAck(0);
// set payload sizes
for(i=0; i<=5; i++)
nRFAPI_SetPipeSizeRX(i,2);
// set TX retry count
nRFAPI_TxRetries(0);
// set selected channel
nRFAPI_SetChannel(channel);
// set Tx power
nRFAPI_SetTxPower(3);
// flush FIFOs
nRFAPI_FlushRX();
nRFAPI_FlushTX();
nRFAPI_SetRxMode(0);
if(features != 0)
nRFAPI_SetFeatures(features);
return 1;
}
uint8_t
nRFAPI_Init (uint8_t channel,
const uint8_t * mac, uint8_t mac_size, uint8_t features)
{
uint8_t i;
// init IO layer of nRF24L01
nRFCMD_Init ();
/* wait for nRF to boot */
pmu_sleep_ms(10);
// check validity
if (mac_size < 3 || mac_size > 5 || !nRFAPI_DetectChip ())
return 0;
// update mac
nRFAPI_SetSizeMac (mac_size);
nRFAPI_SetTxMAC (mac, mac_size);
// enables pipe
nRFAPI_SetRxMAC (mac, mac_size, 0);
nRFAPI_PipesEnable (ERX_P0);
nRFAPI_PipesAck (0);
// set payload sizes
for (i = 0; i <= 5; i++)
nRFAPI_SetPipeSizeRX (i, 16);
// set TX retry count
nRFAPI_TxRetries (0);
// set selected channel
nRFAPI_SetChannel (channel);
// set Tx power
nRFAPI_SetTxPower (3);
// flush FIFOs
nRFAPI_FlushRX ();
nRFAPI_FlushTX ();
if (features != 0)
nRFAPI_SetFeatures (features);
return 1;
}
static void
vnRFtaskRxTx (void *parameter)
{
u_int32_t crc, t;
u_int8_t status;
portTickType last_ticks = 0, jam_ticks = 0;
if (!PtInitNRF ())
return;
for (;;)
{
/* check if TX strength changed */
if (nrf_powerlevel_current != nrf_powerlevel_last)
{
nRFAPI_SetTxPower (nrf_powerlevel_current);
nrf_powerlevel_last = nrf_powerlevel_current;
}
status = nRFAPI_GetFifoStatus ();
/* living in a paranoid world ;-) */
if (status & FIFO_TX_FULL)
nRFAPI_FlushTX ();
/* check for received packets */
if ((status & FIFO_RX_FULL) || nRFCMD_WaitRx (0))
{
vLedSetGreen (0);
do
{
/* read packet from nRF chip */
nRFCMD_RegReadBuf (RD_RX_PLOAD, (unsigned char *) &rfpkg,
sizeof (rfpkg));
/* adjust byte order and decode */
shuffle_tx_byteorder ((unsigned long *) &rfpkg,
sizeof (rfpkg) / sizeof (long));
xxtea_decode ((long *) &rfpkg, sizeof (rfpkg) / sizeof (long));
shuffle_tx_byteorder ((unsigned long *) &rfpkg,
sizeof (rfpkg) / sizeof (long));
/* verify the crc checksum */
crc =
crc32 ((unsigned char *) &rfpkg,
sizeof (rfpkg) - sizeof (rfpkg.crc));
if ((crc == PtSwapLong (rfpkg.crc)) &&
(rfpkg.wmcu_id == env.e.mcu_id) &&
(rfpkg.cmd & RF_PKG_SENT_BY_DIMMER))
{
//debug_printf("dumping received packet:\n");
//hex_dump((unsigned char *) &rfpkg, 0, sizeof(rfpkg));
b_parse_rfrx_pkg (&rfpkg);
rf_rec++;
}
}
while ((nRFAPI_GetFifoStatus () & FIFO_RX_EMPTY) == 0);
vLedSetGreen (1);
}
/* transmit current lamp value */
if (env.e.mcu_id && ((xTaskGetTickCount () - last_ticks) > jam_ticks))
{
memset (&rfpkg, 0, sizeof (rfpkg));
rfpkg.cmd = RF_CMD_SET_VALUES;
rfpkg.wmcu_id = env.e.mcu_id;
rfpkg.mac = 0xffff; /* send to all MACs */
for (t = 0; t < RF_PAYLOAD_SIZE; t++)
rfpkg.payload[t] =
(last_lamp_val[t * 2] & 0xf) |
(last_lamp_val[(t * 2) + 1] << 4);
// random delay to avoid collisions
PtInternalTransmit (&rfpkg);
// prepare next jam transmission
last_ticks = xTaskGetTickCount ();
jam_ticks =
(RndNumber () % (jam_density_ms * 2)) / portTICK_RATE_MS;
}
vTaskDelay (5 / portTICK_RATE_MS);
/* did I already mention the paranoid world thing? */
nRFAPI_ClearIRQ (MASK_IRQ_FLAGS);
}
}
