static PyObject * channel_setstate(PyObject *self, PyObject *args) { PyChannelObject *ch = (PyChannelObject *) self; PyTaskletObject *t; PyObject *lis; int flags, balance; int dir; Py_ssize_t i, n; if (!PyArg_ParseTuple(args, "iiO!:channel", &balance, &flags, &PyList_Type, &lis)) return NULL; channel_clear((PyObject *) ch); n = PyList_GET_SIZE(lis); *(int *)&ch->flags = flags; dir = balance > 0 ? 1 : -1; for (i = 0; i < n; i++) { t = (PyTaskletObject *) PyList_GET_ITEM(lis, i); if (PyTasklet_Check(t) && !t->flags.blocked) { Py_INCREF(t); slp_channel_insert(ch, t, dir); } } Py_INCREF(self); return self; }
/*---------------------------------------------------------------------------*/ static int transmit(unsigned short transmit_len) { uint8_t counter; int ret = RADIO_TX_ERR; rtimer_clock_t t0; transmit_len; /* hush the warning */ if(!(rf_flags & RX_ACTIVE)) { t0 = RTIMER_NOW(); on(); rf_flags |= WAS_OFF; while (RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + ONOFF_TIME)); } if(channel_clear() == CC2530_RF_CCA_BUSY) { RIMESTATS_ADD(contentiondrop); return RADIO_TX_COLLISION; } /* * prepare() double checked that TX_ACTIVE is low. If SFD is high we are * receiving. Abort transmission and bail out with RADIO_TX_COLLISION */ if(FSMSTAT1 & FSMSTAT1_SFD) { RIMESTATS_ADD(contentiondrop); return RADIO_TX_COLLISION; } /* Start the transmission */ RF_TX_LED_ON(); ENERGEST_OFF(ENERGEST_TYPE_LISTEN); ENERGEST_ON(ENERGEST_TYPE_TRANSMIT); CC2530_CSP_ISTXON(); counter = 0; while(!(FSMSTAT1 & FSMSTAT1_TX_ACTIVE) && (counter++ < 3)) { clock_delay_usec(6); } if(!(FSMSTAT1 & FSMSTAT1_TX_ACTIVE)) { PUTSTRING("RF: TX never active.\n"); CC2530_CSP_ISFLUSHTX(); ret = RADIO_TX_ERR; } else { /* Wait for the transmission to finish */ while(FSMSTAT1 & FSMSTAT1_TX_ACTIVE); ret = RADIO_TX_OK; } ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT); ENERGEST_ON(ENERGEST_TYPE_LISTEN); if(rf_flags & WAS_OFF){ off(); } RIMESTATS_ADD(lltx); RF_TX_LED_OFF(); /* OK, sent. We are now ready to send more */ return ret; }
/*---------------------------------------------------------------------------*/ static int transmit(unsigned short transmit_len) { uint8_t counter; int ret = RADIO_TX_ERR; rtimer_clock_t t0; uint8_t was_off = 0; PRINTF("RF: Transmit\n"); if(!(rf_flags & RX_ACTIVE)) { t0 = RTIMER_NOW(); on(); was_off = 1; while(RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + ONOFF_TIME)); } if(channel_clear() == CC2538_RF_CCA_BUSY) { RIMESTATS_ADD(contentiondrop); return RADIO_TX_COLLISION; } /* * prepare() double checked that TX_ACTIVE is low. If SFD is high we are * receiving. Abort transmission and bail out with RADIO_TX_COLLISION */ if(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_SFD) { RIMESTATS_ADD(contentiondrop); return RADIO_TX_COLLISION; } /* Start the transmission */ ENERGEST_OFF(ENERGEST_TYPE_LISTEN); ENERGEST_ON(ENERGEST_TYPE_TRANSMIT); CC2538_RF_CSP_ISTXON(); counter = 0; while(!((REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_TX_ACTIVE)) && (counter++ < 3)) { clock_delay_usec(6); } if(!(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_TX_ACTIVE)) { PRINTF("RF: TX never active.\n"); CC2538_RF_CSP_ISFLUSHTX(); ret = RADIO_TX_ERR; } else { /* Wait for the transmission to finish */ while(REG(RFCORE_XREG_FSMSTAT1) & RFCORE_XREG_FSMSTAT1_TX_ACTIVE); ret = RADIO_TX_OK; } ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT); ENERGEST_ON(ENERGEST_TYPE_LISTEN); if(was_off) { off(); } RIMESTATS_ADD(lltx); return ret; }