/* * Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/ * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ /*---------------------------------------------------------------------------*/ /** * \addtogroup rf-core * @{ * * \defgroup rf-core-prop CC13xx Prop mode driver * * @{ * * \file * Implementation of the CC13xx prop mode NETSTACK_RADIO driver */ /*---------------------------------------------------------------------------*/ #include "contiki.h" #include "dev/radio.h" #include "dev/cc26xx-uart.h" #include "dev/oscillators.h" #include "dev/watchdog.h" #include "net/packetbuf.h" #include "net/rime/rimestats.h" #include "net/linkaddr.h" #include "net/netstack.h" #include "sys/energest.h" #include "sys/clock.h" #include "sys/rtimer.h" #include "sys/cc.h" #include "lpm.h" #include "ti-lib.h" #include "rf-core/rf-core.h" #include "rf-core/rf-ble.h" #include "rf-core/dot-15-4g.h" /*---------------------------------------------------------------------------*/ /* RF core and RF HAL API */ #include "hw_rfc_dbell.h" #include "hw_rfc_pwr.h" /*---------------------------------------------------------------------------*/ /* RF Core Mailbox API */ #include "rf-core/api/mailbox.h" #include "rf-core/api/common_cmd.h" #include "rf-core/api/data_entry.h" #include "rf-core/api/prop_mailbox.h" #include "rf-core/api/prop_cmd.h" /*---------------------------------------------------------------------------*/ /* CC13xxware patches */ #include "rf_patches/rf_patch_cpe_genfsk.h" /*---------------------------------------------------------------------------*/ #include "rf-core/smartrf-settings.h" /*---------------------------------------------------------------------------*/ #include #include #include #include /*---------------------------------------------------------------------------*/ #ifdef __GNUC__ #define CC_ALIGN_ATTR(n) __attribute__ ((aligned(n))) #else #define CC_ALIGN_ATTR(n) #endif /*---------------------------------------------------------------------------*/ #define DEBUG 0 #if DEBUG #define PRINTF(...) printf(__VA_ARGS__) #else #define PRINTF(...) #endif /*---------------------------------------------------------------------------*/ /* Data entry status field constants */ #define DATA_ENTRY_STATUS_PENDING 0x00 /* Not in use by the Radio CPU */ #define DATA_ENTRY_STATUS_ACTIVE 0x01 /* Open for r/w by the radio CPU */ #define DATA_ENTRY_STATUS_BUSY 0x02 /* Ongoing r/w */ #define DATA_ENTRY_STATUS_FINISHED 0x03 /* Free to use and to free */ #define DATA_ENTRY_STATUS_UNFINISHED 0x04 /* Partial RX entry */ /*---------------------------------------------------------------------------*/ /* Data whitener. 1: Whitener, 0: No whitener */ #ifdef PROP_MODE_CONF_DW #define PROP_MODE_DW PROP_MODE_CONF_DW #else #define PROP_MODE_DW 0 #endif #ifdef PROP_MODE_CONF_USE_CRC16 #define PROP_MODE_USE_CRC16 PROP_MODE_CONF_USE_CRC16 #else #define PROP_MODE_USE_CRC16 0 #endif /*---------------------------------------------------------------------------*/ #ifdef PROP_MODE_CONF_SNIFFER #define PROP_MODE_SNIFFER PROP_MODE_CONF_SNIFFER #else #define PROP_MODE_SNIFFER 0 #endif #if PROP_MODE_SNIFFER static const uint8_t magic[] = { 0x53, 0x6E, 0x69, 0x66 }; #endif /*---------------------------------------------------------------------------*/ /** * \brief Returns the current status of a running Radio Op command * \param a A pointer with the buffer used to initiate the command * \return The value of the Radio Op buffer's status field * * This macro can be used to e.g. return the status of a previously * initiated background operation, or of an immediate command */ #define RF_RADIO_OP_GET_STATUS(a) GET_FIELD_V(a, radioOp, status) /*---------------------------------------------------------------------------*/ /* Special value returned by CMD_IEEE_CCA_REQ when an RSSI is not available */ #define RF_CMD_CCA_REQ_RSSI_UNKNOWN -128 /* Used for the return value of channel_clear */ #define RF_CCA_CLEAR 1 #define RF_CCA_BUSY 0 /* Used as an error return value for get_cca_info */ #define RF_GET_CCA_INFO_ERROR 0xFF /* * Values of the individual bits of the ccaInfo field in CMD_IEEE_CCA_REQ's * status struct */ #define RF_CMD_CCA_REQ_CCA_STATE_IDLE 0 /* 00 */ #define RF_CMD_CCA_REQ_CCA_STATE_BUSY 1 /* 01 */ #define RF_CMD_CCA_REQ_CCA_STATE_INVALID 2 /* 10 */ #ifdef PROP_MODE_CONF_RSSI_THRESHOLD #define PROP_MODE_RSSI_THRESHOLD PROP_MODE_CONF_RSSI_THRESHOLD #else #define PROP_MODE_RSSI_THRESHOLD 0xA6 #endif static int8_t rssi_threshold = PROP_MODE_RSSI_THRESHOLD; /*---------------------------------------------------------------------------*/ static int on(void); static int off(void); static rfc_propRxOutput_t rx_stats; /*---------------------------------------------------------------------------*/ /* Defines and variables related to the .15.4g PHY HDR */ #define DOT_4G_MAX_FRAME_LEN 2047 #define DOT_4G_PHR_LEN 2 /* PHY HDR bits */ #define DOT_4G_PHR_CRC16 0x10 #define DOT_4G_PHR_DW 0x08 #if PROP_MODE_USE_CRC16 /* CRC16 */ #define DOT_4G_PHR_CRC_BIT DOT_4G_PHR_CRC16 #define CRC_LEN 2 #else /* CRC32 */ #define DOT_4G_PHR_CRC_BIT 0 #define CRC_LEN 4 #endif #if PROP_MODE_DW #define DOT_4G_PHR_DW_BIT DOT_4G_PHR_DW #else #define DOT_4G_PHR_DW_BIT 0 #endif /*---------------------------------------------------------------------------*/ /* How long to wait for an ongoing ACK TX to finish before starting frame TX */ #define TX_WAIT_TIMEOUT (RTIMER_SECOND >> 11) /* How long to wait for the RF to enter RX in rf_cmd_ieee_rx */ #define ENTER_RX_WAIT_TIMEOUT (RTIMER_SECOND >> 10) /*---------------------------------------------------------------------------*/ /* TX Power dBm lookup table - values from SmartRF Studio */ typedef struct output_config { radio_value_t dbm; uint16_t tx_power; /* Value for the PROP_DIV_RADIO_SETUP.txPower field */ } output_config_t; static const output_config_t output_power[] = { { 14, 0xa73f }, { 13, 0xa73f }, /* 12.5 */ { 12, 0xb818 }, { 11, 0x50da }, { 10, 0x38d3 }, { 9, 0x2ccd }, { 8, 0x24cb }, { 7, 0x20c9 }, { 6, 0x1cc7 }, { 5, 0x18c6 }, { 4, 0x18c5 }, { 3, 0x14c4 }, { 2, 0x1042 }, { 1, 0x10c3 }, { 0, 0x0041 }, {-10, 0x08c0 }, }; #define OUTPUT_CONFIG_COUNT (sizeof(output_power) / sizeof(output_config_t)) /* Max and Min Output Power in dBm */ #define OUTPUT_POWER_MIN (output_power[OUTPUT_CONFIG_COUNT - 1].dbm) #define OUTPUT_POWER_MAX (output_power[0].dbm) #define OUTPUT_POWER_UNKNOWN 0xFFFF /* Default TX Power - position in output_power[] */ const output_config_t *tx_power_current = &output_power[1]; /*---------------------------------------------------------------------------*/ #ifdef PROP_MODE_CONF_LO_DIVIDER #define PROP_MODE_LO_DIVIDER PROP_MODE_CONF_LO_DIVIDER #else #define PROP_MODE_LO_DIVIDER 0x05 #endif /*---------------------------------------------------------------------------*/ #define DATA_ENTRY_LENSZ_NONE 0 #define DATA_ENTRY_LENSZ_BYTE 1 #define DATA_ENTRY_LENSZ_WORD 2 /* 2 bytes */ #define RX_BUF_SIZE 140 /* Receive buffers: 1 frame in each */ static uint8_t rx_buf_0[RX_BUF_SIZE] CC_ALIGN_ATTR(4); static uint8_t rx_buf_1[RX_BUF_SIZE] CC_ALIGN_ATTR(4); /* The RX Data Queue */ static dataQueue_t rx_data_queue = { 0 }; /* Receive entry pointer to keep track of read items */ volatile static uint8_t *rx_read_entry; /*---------------------------------------------------------------------------*/ /* The outgoing frame buffer */ #define TX_BUF_PAYLOAD_LEN 180 #define TX_BUF_HDR_LEN 2 static uint8_t tx_buf[TX_BUF_HDR_LEN + TX_BUF_PAYLOAD_LEN] CC_ALIGN_ATTR(4); /*---------------------------------------------------------------------------*/ static uint8_t rf_is_on(void) { if(!rf_core_is_accessible()) { return 0; } return smartrf_settings_cmd_prop_rx_adv.status == RF_CORE_RADIO_OP_STATUS_ACTIVE; } /*---------------------------------------------------------------------------*/ static uint8_t transmitting(void) { return smartrf_settings_cmd_prop_tx_adv.status == RF_CORE_RADIO_OP_STATUS_ACTIVE; } /*---------------------------------------------------------------------------*/ static radio_value_t get_rssi(void) { uint32_t cmd_status; int8_t rssi; uint8_t was_off = 0; rfc_CMD_GET_RSSI_t cmd; /* If we are off, turn on first */ if(!rf_is_on()) { was_off = 1; if(on() != RF_CORE_CMD_OK) { PRINTF("get_rssi: on() failed\n"); return RF_CMD_CCA_REQ_RSSI_UNKNOWN; } } memset(&cmd, 0x00, sizeof(cmd)); cmd.commandNo = CMD_GET_RSSI; rssi = RF_CMD_CCA_REQ_RSSI_UNKNOWN; if(rf_core_send_cmd((uint32_t)&cmd, &cmd_status) == RF_CORE_CMD_OK) { /* Current RSSI in bits 23:16 of cmd_status */ rssi = (cmd_status >> 16) & 0xFF; } /* If we were off, turn back off */ if(was_off) { off(); } return rssi; } /*---------------------------------------------------------------------------*/ static uint8_t get_channel(void) { uint32_t freq_khz; freq_khz = smartrf_settings_cmd_fs.frequency * 1000; /* * For some channels, fractFreq * 1000 / 65536 will return 324.99xx. * Casting the result to uint32_t will truncate decimals resulting in the * function returning channel - 1 instead of channel. Thus, we do a quick * positive integer round up. */ freq_khz += (((smartrf_settings_cmd_fs.fractFreq * 1000) + 65535) / 65536); return (freq_khz - DOT_15_4G_CHAN0_FREQUENCY) / DOT_15_4G_CHANNEL_SPACING; } /*---------------------------------------------------------------------------*/ static void set_channel(uint8_t channel) { uint32_t new_freq; uint16_t freq, frac; new_freq = DOT_15_4G_CHAN0_FREQUENCY + (channel * DOT_15_4G_CHANNEL_SPACING); freq = (uint16_t)(new_freq / 1000); frac = (new_freq - (freq * 1000)) * 65536 / 1000; PRINTF("set_channel: %u = 0x%04x.0x%04x (%lu)\n", channel, freq, frac, new_freq); smartrf_settings_cmd_prop_radio_div_setup.centerFreq = freq; smartrf_settings_cmd_fs.frequency = freq; smartrf_settings_cmd_fs.fractFreq = frac; } /*---------------------------------------------------------------------------*/ /* Returns the current TX power in dBm */ static radio_value_t get_tx_power(void) { return tx_power_current->dbm; } /*---------------------------------------------------------------------------*/ /* * The caller must make sure to send a new CMD_PROP_RADIO_DIV_SETP to the * radio after calling this function. */ static void set_tx_power(radio_value_t power) { int i; for(i = OUTPUT_CONFIG_COUNT - 1; i >= 0; --i) { if(power <= output_power[i].dbm) { /* * Merely save the value. It will be used in all subsequent usages of * CMD_PROP_RADIO_DIV_SETP, including one immediately after this function * has returned */ tx_power_current = &output_power[i]; return; } } } /*---------------------------------------------------------------------------*/ static int prop_div_radio_setup(void) { uint32_t cmd_status; rfc_radioOp_t *cmd = (rfc_radioOp_t *)&smartrf_settings_cmd_prop_radio_div_setup; /* Adjust loDivider depending on the selected band */ smartrf_settings_cmd_prop_radio_div_setup.loDivider = PROP_MODE_LO_DIVIDER; /* Update to the correct TX power setting */ smartrf_settings_cmd_prop_radio_div_setup.txPower = tx_power_current->tx_power; /* Send Radio setup to RF Core */ if(rf_core_send_cmd((uint32_t)cmd, &cmd_status) != RF_CORE_CMD_OK) { PRINTF("prop_div_radio_setup: DIV_SETUP, CMDSTA=0x%08lx, status=0x%04x\n", cmd_status, cmd->status); return RF_CORE_CMD_ERROR; } /* Wait until radio setup is done */ if(rf_core_wait_cmd_done(cmd) != RF_CORE_CMD_OK) { PRINTF("prop_div_radio_setup: DIV_SETUP wait, CMDSTA=0x%08lx," "status=0x%04x\n", cmd_status, cmd->status); return RF_CORE_CMD_ERROR; } return RF_CORE_CMD_OK; } /*---------------------------------------------------------------------------*/ static uint8_t rf_cmd_prop_rx() { uint32_t cmd_status; rtimer_clock_t t0; volatile rfc_CMD_PROP_RX_ADV_t *cmd_rx_adv; int ret; cmd_rx_adv = (rfc_CMD_PROP_RX_ADV_t *)&smartrf_settings_cmd_prop_rx_adv; cmd_rx_adv->status = RF_CORE_RADIO_OP_STATUS_IDLE; /* * Set the max Packet length. This is for the payload only, therefore * 2047 - length offset */ cmd_rx_adv->maxPktLen = DOT_4G_MAX_FRAME_LEN - cmd_rx_adv->lenOffset; ret = rf_core_send_cmd((uint32_t)cmd_rx_adv, &cmd_status); if(ret != RF_CORE_CMD_OK) { PRINTF("rf_cmd_prop_rx: send_cmd ret=%d, CMDSTA=0x%08lx, status=0x%04x\n", ret, cmd_status, cmd_rx_adv->status); return RF_CORE_CMD_ERROR; } t0 = RTIMER_NOW(); while(cmd_rx_adv->status != RF_CORE_RADIO_OP_STATUS_ACTIVE && (RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + ENTER_RX_WAIT_TIMEOUT))); /* Wait to enter RX */ if(cmd_rx_adv->status != RF_CORE_RADIO_OP_STATUS_ACTIVE) { PRINTF("rf_cmd_prop_rx: CMDSTA=0x%08lx, status=0x%04x\n", cmd_status, cmd_rx_adv->status); return RF_CORE_CMD_ERROR; } return ret; } /*---------------------------------------------------------------------------*/ static int rx_on_prop(void) { int ret; if(rf_is_on()) { PRINTF("rx_on_prop: We were on. PD=%u, RX=0x%04x\n", rf_core_is_accessible(), smartrf_settings_cmd_prop_rx_adv.status); return RF_CORE_CMD_OK; } /* Put CPE in RX using the currently configured parameters */ ret = rf_cmd_prop_rx(); if(ret) { ENERGEST_ON(ENERGEST_TYPE_LISTEN); } return ret; } /*---------------------------------------------------------------------------*/ static int rx_off_prop(void) { uint32_t cmd_status; int ret; /* If we are off, do nothing */ if(!rf_is_on()) { return RF_CORE_CMD_OK; } /* Send a CMD_ABORT command to RF Core */ if(rf_core_send_cmd(CMDR_DIR_CMD(CMD_ABORT), &cmd_status) != RF_CORE_CMD_OK) { PRINTF("rx_off_prop: CMD_ABORT status=0x%08lx\n", cmd_status); /* Continue nonetheless */ } while(rf_is_on()); if(smartrf_settings_cmd_prop_rx_adv.status == PROP_DONE_STOPPED || smartrf_settings_cmd_prop_rx_adv.status == PROP_DONE_ABORT) { /* Stopped gracefully */ ENERGEST_OFF(ENERGEST_TYPE_LISTEN); ret = RF_CORE_CMD_OK; } else { PRINTF("rx_off_prop: status=0x%04x\n", smartrf_settings_cmd_prop_rx_adv.status); ret = RF_CORE_CMD_ERROR; } return ret; } /*---------------------------------------------------------------------------*/ static uint8_t request(void) { /* * We rely on the RDC layer to turn us on and off. Thus, if we are on we * will only allow sleep, standby otherwise */ if(rf_is_on()) { return LPM_MODE_SLEEP; } return LPM_MODE_MAX_SUPPORTED; } /*---------------------------------------------------------------------------*/ LPM_MODULE(prop_lpm_module, request, NULL, NULL, LPM_DOMAIN_NONE); /*---------------------------------------------------------------------------*/ static int prop_fs(void) { uint32_t cmd_status; rfc_radioOp_t *cmd = (rfc_radioOp_t *)&smartrf_settings_cmd_fs; /* Send the command to the RF Core */ if(rf_core_send_cmd((uint32_t)cmd, &cmd_status) != RF_CORE_CMD_OK) { PRINTF("prop_fs: CMD_FS, CMDSTA=0x%08lx, status=0x%04x\n", cmd_status, cmd->status); return RF_CORE_CMD_ERROR; } /* Wait until the command is done */ if(rf_core_wait_cmd_done(cmd) != RF_CORE_CMD_OK) { PRINTF("prop_fs: CMD_FS wait, CMDSTA=0x%08lx, status=0x%04x\n", cmd_status, cmd->status); return RF_CORE_CMD_ERROR; } return RF_CORE_CMD_OK; } /*---------------------------------------------------------------------------*/ static void soft_off_prop(void) { uint32_t cmd_status; volatile rfc_radioOp_t *cmd = rf_core_get_last_radio_op(); if(!rf_core_is_accessible()) { return; } /* Send a CMD_ABORT command to RF Core */ if(rf_core_send_cmd(CMDR_DIR_CMD(CMD_ABORT), &cmd_status) != RF_CORE_CMD_OK) { PRINTF("soft_off_prop: CMD_ABORT status=0x%08lx\n", cmd_status); return; } while((cmd->status & RF_CORE_RADIO_OP_MASKED_STATUS) == RF_CORE_RADIO_OP_MASKED_STATUS_RUNNING); } /*---------------------------------------------------------------------------*/ static uint8_t soft_on_prop(void) { if(prop_div_radio_setup() != RF_CORE_CMD_OK) { PRINTF("soft_on_prop: prop_div_radio_setup() failed\n"); return RF_CORE_CMD_ERROR; } if(prop_fs() != RF_CORE_CMD_OK) { PRINTF("soft_on_prop: prop_fs() failed\n"); return RF_CORE_CMD_ERROR; } return rx_on_prop(); } /*---------------------------------------------------------------------------*/ static const rf_core_primary_mode_t mode_prop = { soft_off_prop, soft_on_prop, }; /*---------------------------------------------------------------------------*/ static int init(void) { rfc_dataEntry_t *entry; lpm_register_module(&prop_lpm_module); if(ti_lib_chipinfo_chip_family_is_cc13xx() == false) { return RF_CORE_CMD_ERROR; } rf_core_set_modesel(); /* Initialise RX buffers */ memset(rx_buf_0, 0, RX_BUF_SIZE); memset(rx_buf_1, 0, RX_BUF_SIZE); entry = (rfc_dataEntry_t *)rx_buf_0; entry->status = DATA_ENTRY_STATUS_PENDING; entry->config.type = DATA_ENTRY_TYPE_GEN; entry->config.lenSz = DATA_ENTRY_LENSZ_WORD; entry->length = RX_BUF_SIZE - 8; entry->pNextEntry = rx_buf_1; entry = (rfc_dataEntry_t *)rx_buf_1; entry->status = DATA_ENTRY_STATUS_PENDING; entry->config.type = DATA_ENTRY_TYPE_GEN; entry->config.lenSz = DATA_ENTRY_LENSZ_WORD; entry->length = RX_BUF_SIZE - 8; entry->pNextEntry = rx_buf_0; /* Set of RF Core data queue. Circular buffer, no last entry */ rx_data_queue.pCurrEntry = rx_buf_0; rx_data_queue.pLastEntry = NULL; /* Initialize current read pointer to first element (used in ISR) */ rx_read_entry = rx_buf_0; smartrf_settings_cmd_prop_rx_adv.pQueue = &rx_data_queue; smartrf_settings_cmd_prop_rx_adv.pOutput = (uint8_t *)&rx_stats; set_channel(RF_CORE_CHANNEL); if(on() != RF_CORE_CMD_OK) { PRINTF("init: on() failed\n"); return RF_CORE_CMD_ERROR; } ENERGEST_ON(ENERGEST_TYPE_LISTEN); rf_core_primary_mode_register(&mode_prop); process_start(&rf_core_process, NULL); return 1; } /*---------------------------------------------------------------------------*/ static int prepare(const void *payload, unsigned short payload_len) { int len = MIN(payload_len, TX_BUF_PAYLOAD_LEN); memcpy(&tx_buf[TX_BUF_HDR_LEN], payload, len); return RF_CORE_CMD_OK; } /*---------------------------------------------------------------------------*/ static int transmit(unsigned short transmit_len) { int ret; uint8_t was_off = 0; uint32_t cmd_status; volatile rfc_CMD_PROP_TX_ADV_t *cmd_tx_adv; /* Length in .15.4g PHY HDR. Includes the CRC but not the HDR itself */ uint16_t total_length; if(!rf_is_on()) { was_off = 1; if(on() != RF_CORE_CMD_OK) { PRINTF("transmit: on() failed\n"); return RADIO_TX_ERR; } } /* * Prepare the .15.4g PHY header * MS=0, Length MSBits=0, DW and CRC configurable * Total length = transmit_len (payload) + CRC length * * The Radio will flip the bits around, so tx_buf[0] must have the length * LSBs (PHR[15:8] and tx_buf[1] will have PHR[7:0] */ total_length = transmit_len + CRC_LEN; tx_buf[0] = total_length & 0xFF; tx_buf[1] = (total_length >> 8) + DOT_4G_PHR_DW_BIT + DOT_4G_PHR_CRC_BIT; /* Prepare the CMD_PROP_TX_ADV command */ cmd_tx_adv = (rfc_CMD_PROP_TX_ADV_t *)&smartrf_settings_cmd_prop_tx_adv; /* * pktLen: Total number of bytes in the TX buffer, including the header if * one exists, but not including the CRC (which is not present in the buffer) */ cmd_tx_adv->pktLen = transmit_len + DOT_4G_PHR_LEN; cmd_tx_adv->pPkt = tx_buf; /* Abort RX */ rx_off_prop(); /* Enable the LAST_COMMAND_DONE interrupt to wake us up */ rf_core_cmd_done_en(false); ret = rf_core_send_cmd((uint32_t)cmd_tx_adv, &cmd_status); if(ret) { /* If we enter here, TX actually started */ ENERGEST_OFF(ENERGEST_TYPE_LISTEN); ENERGEST_ON(ENERGEST_TYPE_TRANSMIT); watchdog_periodic(); /* Idle away while the command is running */ while((cmd_tx_adv->status & RF_CORE_RADIO_OP_MASKED_STATUS) == RF_CORE_RADIO_OP_MASKED_STATUS_RUNNING) { lpm_sleep(); } if(cmd_tx_adv->status == RF_CORE_RADIO_OP_STATUS_PROP_DONE_OK) { /* Sent OK */ RIMESTATS_ADD(lltx); ret = RADIO_TX_OK; } else { /* Operation completed, but frame was not sent */ PRINTF("transmit: Not Sent OK status=0x%04x\n", cmd_tx_adv->status); ret = RADIO_TX_ERR; } } else { /* Failure sending the CMD_PROP_TX command */ PRINTF("transmit: PROP_TX_ERR ret=%d, CMDSTA=0x%08lx, status=0x%04x\n", ret, cmd_status, cmd_tx_adv->status); ret = RADIO_TX_ERR; } /* * Update ENERGEST state here, before a potential call to off(), which * will correctly update it if required. */ ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT); ENERGEST_ON(ENERGEST_TYPE_LISTEN); /* * Disable LAST_FG_COMMAND_DONE interrupt. We don't really care about it * except when we are transmitting */ rf_core_cmd_done_dis(); /* Workaround. Set status to IDLE */ cmd_tx_adv->status = RF_CORE_RADIO_OP_STATUS_IDLE; rx_on_prop(); if(was_off) { off(); } return ret; } /*---------------------------------------------------------------------------*/ static int send(const void *payload, unsigned short payload_len) { prepare(payload, payload_len); return transmit(payload_len); } /*---------------------------------------------------------------------------*/ static int read_frame(void *buf, unsigned short buf_len) { rfc_dataEntryGeneral_t *entry = (rfc_dataEntryGeneral_t *)rx_read_entry; uint8_t *data_ptr = &entry->data; int len = 0; if(entry->status == DATA_ENTRY_STATUS_FINISHED) { /* * First 2 bytes in the data entry are the length. * Our data entry consists of: Payload + RSSI (1 byte) + Status (1 byte) * This length includes all of those. */ len = (*(uint16_t *)data_ptr); data_ptr += 2; len -= 2; if(len > 0) { if(len <= buf_len) { memcpy(buf, data_ptr, len); } packetbuf_set_attr(PACKETBUF_ATTR_RSSI, (int8_t)data_ptr[len]); #if PROP_MODE_SNIFFER { int i; cc26xx_uart_write_byte(magic[0]); cc26xx_uart_write_byte(magic[1]); cc26xx_uart_write_byte(magic[2]); cc26xx_uart_write_byte(magic[3]); cc26xx_uart_write_byte(len + 2); for(i = 0; i < len; ++i) { cc26xx_uart_write_byte(((uint8_t *)(buf))[i]); } cc26xx_uart_write_byte((uint8_t)rx_stats.lastRssi); cc26xx_uart_write_byte(0x80); while(cc26xx_uart_busy() == UART_BUSY); } #endif } /* Move read entry pointer to next entry */ rx_read_entry = entry->pNextEntry; entry->status = DATA_ENTRY_STATUS_PENDING; } return len; } /*---------------------------------------------------------------------------*/ static int channel_clear(void) { uint8_t was_off = 0; uint32_t cmd_status; int8_t rssi = RF_CMD_CCA_REQ_RSSI_UNKNOWN; /* * If we are in the middle of a BLE operation, we got called by ContikiMAC * from within an interrupt context. Indicate a clear channel */ if(rf_ble_is_active() == RF_BLE_ACTIVE) { return RF_CCA_CLEAR; } if(!rf_core_is_accessible()) { was_off = 1; if(on() != RF_CORE_CMD_OK) { PRINTF("channel_clear: on() failed\n"); if(was_off) { off(); } return RF_CCA_CLEAR; } } else { if(transmitting()) { PRINTF("channel_clear: called while in TX\n"); return RF_CCA_CLEAR; } } while(rssi == RF_CMD_CCA_REQ_RSSI_UNKNOWN || rssi == 0) { if(rf_core_send_cmd(CMDR_DIR_CMD(CMD_GET_RSSI), &cmd_status) != RF_CORE_CMD_OK) { break; } /* Current RSSI in bits 23:16 of cmd_status */ rssi = (cmd_status >> 16) & 0xFF; } if(was_off) { off(); } if(rssi >= rssi_threshold) { return RF_CCA_BUSY; } return RF_CCA_CLEAR; } /*---------------------------------------------------------------------------*/ static int receiving_packet(void) { if(!rf_is_on()) { return 0; } if(channel_clear() == RF_CCA_CLEAR) { return 0; } return 1; } /*---------------------------------------------------------------------------*/ static int pending_packet(void) { int rv = 0; volatile rfc_dataEntry_t *entry = (rfc_dataEntry_t *)rx_data_queue.pCurrEntry; /* Go through all RX buffers and check their status */ do { if(entry->status == DATA_ENTRY_STATUS_FINISHED) { rv += 1; process_poll(&rf_core_process); } entry = (rfc_dataEntry_t *)entry->pNextEntry; } while(entry != (rfc_dataEntry_t *)rx_data_queue.pCurrEntry); /* If we didn't find an entry at status finished, no frames are pending */ return rv; } /*---------------------------------------------------------------------------*/ static int on(void) { /* * Request the HF XOSC as the source for the HF clock. Needed before we can * use the FS. This will only request, it will _not_ perform the switch. */ oscillators_request_hf_xosc(); /* * If we are in the middle of a BLE operation, we got called by ContikiMAC * from within an interrupt context. Abort, but pretend everything is OK. */ if(rf_ble_is_active() == RF_BLE_ACTIVE) { return RF_CORE_CMD_OK; } if(rf_is_on()) { PRINTF("on: We were on. PD=%u, RX=0x%04x \n", rf_core_is_accessible(), smartrf_settings_cmd_prop_rx_adv.status); return RF_CORE_CMD_OK; } if(!rf_core_is_accessible()) { if(rf_core_power_up() != RF_CORE_CMD_OK) { PRINTF("on: rf_core_power_up() failed\n"); rf_core_power_down(); return RF_CORE_CMD_ERROR; } rf_patch_cpe_genfsk(); if(rf_core_start_rat() != RF_CORE_CMD_OK) { PRINTF("on: rf_core_start_rat() failed\n"); rf_core_power_down(); return RF_CORE_CMD_ERROR; } } rf_core_setup_interrupts(); /* * Trigger a switch to the XOSC, so that we can subsequently use the RF FS * This will block until the XOSC is actually ready, but give how we * requested it early on, this won't be too long a wait/ */ oscillators_switch_to_hf_xosc(); if(prop_div_radio_setup() != RF_CORE_CMD_OK) { PRINTF("on: prop_div_radio_setup() failed\n"); return RF_CORE_CMD_ERROR; } if(prop_fs() != RF_CORE_CMD_OK) { PRINTF("on: prop_fs() failed\n"); return RF_CORE_CMD_ERROR; } return rx_on_prop(); } /*---------------------------------------------------------------------------*/ static int off(void) { rfc_dataEntry_t *entry; /* * If we are in the middle of a BLE operation, we got called by ContikiMAC * from within an interrupt context. Abort, but pretend everything is OK. */ if(rf_ble_is_active() == RF_BLE_ACTIVE) { return RF_CORE_CMD_OK; } rx_off_prop(); rf_core_power_down(); ENERGEST_OFF(ENERGEST_TYPE_LISTEN); /* Switch HF clock source to the RCOSC to preserve power */ oscillators_switch_to_hf_rc(); /* We pulled the plug, so we need to restore the status manually */ smartrf_settings_cmd_prop_rx_adv.status = RF_CORE_RADIO_OP_STATUS_IDLE; entry = (rfc_dataEntry_t *)rx_buf_0; entry->status = DATA_ENTRY_STATUS_PENDING; entry = (rfc_dataEntry_t *)rx_buf_1; entry->status = DATA_ENTRY_STATUS_PENDING; return RF_CORE_CMD_OK; } /*---------------------------------------------------------------------------*/ static radio_result_t get_value(radio_param_t param, radio_value_t *value) { if(!value) { return RADIO_RESULT_INVALID_VALUE; } switch(param) { case RADIO_PARAM_POWER_MODE: /* On / off */ *value = rf_is_on() ? RADIO_POWER_MODE_ON : RADIO_POWER_MODE_OFF; return RADIO_RESULT_OK; case RADIO_PARAM_CHANNEL: *value = (radio_value_t)get_channel(); return RADIO_RESULT_OK; case RADIO_PARAM_TXPOWER: *value = get_tx_power(); return RADIO_RESULT_OK; case RADIO_PARAM_CCA_THRESHOLD: *value = rssi_threshold; return RADIO_RESULT_OK; case RADIO_PARAM_RSSI: *value = get_rssi(); if(*value == RF_CMD_CCA_REQ_RSSI_UNKNOWN) { return RADIO_RESULT_ERROR; } else { return RADIO_RESULT_OK; } case RADIO_CONST_CHANNEL_MIN: *value = 0; return RADIO_RESULT_OK; case RADIO_CONST_CHANNEL_MAX: *value = DOT_15_4G_CHANNEL_MAX; return RADIO_RESULT_OK; case RADIO_CONST_TXPOWER_MIN: *value = OUTPUT_POWER_MIN; return RADIO_RESULT_OK; case RADIO_CONST_TXPOWER_MAX: *value = OUTPUT_POWER_MAX; return RADIO_RESULT_OK; default: return RADIO_RESULT_NOT_SUPPORTED; } } /*---------------------------------------------------------------------------*/ static radio_result_t set_value(radio_param_t param, radio_value_t value) { uint8_t was_off = 0; radio_result_t rv = RADIO_RESULT_OK; switch(param) { case RADIO_PARAM_POWER_MODE: if(value == RADIO_POWER_MODE_ON) { if(on() != RF_CORE_CMD_OK) { PRINTF("set_value: on() failed (1)\n"); return RADIO_RESULT_ERROR; } return RADIO_RESULT_OK; } if(value == RADIO_POWER_MODE_OFF) { off(); return RADIO_RESULT_OK; } return RADIO_RESULT_INVALID_VALUE; case RADIO_PARAM_CHANNEL: if(value < 0 || value > DOT_15_4G_CHANNEL_MAX) { return RADIO_RESULT_INVALID_VALUE; } if(get_channel() == (uint8_t)value) { /* We already have that very same channel configured. * Nothing to do here. */ return RADIO_RESULT_OK; } set_channel((uint8_t)value); break; case RADIO_PARAM_TXPOWER: if(value < OUTPUT_POWER_MIN || value > OUTPUT_POWER_MAX) { return RADIO_RESULT_INVALID_VALUE; } soft_off_prop(); set_tx_power(value); if(soft_on_prop() != RF_CORE_CMD_OK) { PRINTF("set_value: soft_on_prop() failed\n"); rv = RADIO_RESULT_ERROR; } return RADIO_RESULT_OK; case RADIO_PARAM_CCA_THRESHOLD: rssi_threshold = (int8_t)value; break; default: return RADIO_RESULT_NOT_SUPPORTED; } /* If we reach here we had no errors. Apply new settings */ if(!rf_is_on()) { was_off = 1; if(on() != RF_CORE_CMD_OK) { PRINTF("set_value: on() failed (2)\n"); return RADIO_RESULT_ERROR; } } if(rx_off_prop() != RF_CORE_CMD_OK) { PRINTF("set_value: rx_off_prop() failed\n"); rv = RADIO_RESULT_ERROR; } if(rx_on_prop() != RF_CORE_CMD_OK) { PRINTF("set_value: rx_on_prop() failed\n"); rv = RADIO_RESULT_ERROR; } /* If we were off, turn back off */ if(was_off) { off(); } return rv; } /*---------------------------------------------------------------------------*/ static radio_result_t get_object(radio_param_t param, void *dest, size_t size) { return RADIO_RESULT_NOT_SUPPORTED; } /*---------------------------------------------------------------------------*/ static radio_result_t set_object(radio_param_t param, const void *src, size_t size) { return RADIO_RESULT_NOT_SUPPORTED; } /*---------------------------------------------------------------------------*/ const struct radio_driver prop_mode_driver = { init, prepare, transmit, send, read_frame, channel_clear, receiving_packet, pending_packet, on, off, get_value, set_value, get_object, set_object, }; /*---------------------------------------------------------------------------*/ /** * @} * @} */