395 lines
13 KiB
C
395 lines
13 KiB
C
/*
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* Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup rf-core-ble
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* @{
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*
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* \file
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* Implementation of the CC13xx/CC26xx RF BLE driver
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "sys/process.h"
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#include "sys/clock.h"
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#include "sys/cc.h"
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#include "sys/etimer.h"
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#include "net/netstack.h"
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#include "net/linkaddr.h"
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#include "dev/oscillators.h"
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#include "rf-core/rf-core.h"
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#include "rf-core/rf-ble.h"
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#include "driverlib/rf_ble_cmd.h"
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#include "driverlib/rf_common_cmd.h"
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#include "ti-lib.h"
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/*---------------------------------------------------------------------------*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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/*---------------------------------------------------------------------------*/
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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/* BLE Intervals: Send a burst of advertisements every BLE_ADV_INTERVAL secs */
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#define BLE_ADV_INTERVAL (CLOCK_SECOND * 5)
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#define BLE_ADV_DUTY_CYCLE (CLOCK_SECOND / 10)
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#define BLE_ADV_MESSAGES 10
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/* BLE Advertisement-related macros */
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#define BLE_ADV_TYPE_DEVINFO 0x01
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#define BLE_ADV_TYPE_NAME 0x09
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#define BLE_ADV_TYPE_MANUFACTURER 0xFF
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#define BLE_ADV_NAME_BUF_LEN 32
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#define BLE_ADV_PAYLOAD_BUF_LEN 64
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#define BLE_UUID_SIZE 16
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/*---------------------------------------------------------------------------*/
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static unsigned char ble_params_buf[32] CC_ALIGN(4);
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static uint8_t ble_mode_on = RF_BLE_IDLE;
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static struct etimer ble_adv_et;
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static uint8_t payload[BLE_ADV_PAYLOAD_BUF_LEN];
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static int p = 0;
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static int i;
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/*---------------------------------------------------------------------------*/
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static uint16_t tx_power = 0x9330;
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/*---------------------------------------------------------------------------*/
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/* BLE beacond config */
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static struct ble_beacond_config {
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clock_time_t interval;
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char adv_name[BLE_ADV_NAME_BUF_LEN];
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} beacond_config = { .interval = BLE_ADV_INTERVAL };
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/*---------------------------------------------------------------------------*/
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#ifdef RF_BLE_CONF_BOARD_OVERRIDES
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#define RF_BLE_BOARD_OVERRIDES RF_BLE_CONF_BOARD_OVERRIDES
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#else
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#define RF_BLE_BOARD_OVERRIDES
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#endif
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/*---------------------------------------------------------------------------*/
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/* BLE overrides */
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static uint32_t ble_overrides[] = {
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0x00364038, /* Synth: Set RTRIM (POTAILRESTRIM) to 6 */
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0x000784A3, /* Synth: Set FREF = 3.43 MHz (24 MHz / 7) */
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0xA47E0583, /* Synth: Set loop bandwidth after lock to 80 kHz (K2) */
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0xEAE00603, /* Synth: Set loop bandwidth after lock to 80 kHz (K3, LSB) */
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0x00010623, /* Synth: Set loop bandwidth after lock to 80 kHz (K3, MSB) */
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0x00456088, /* Adjust AGC reference level */
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RF_BLE_BOARD_OVERRIDES
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0xFFFFFFFF, /* End of override list */
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};
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/*---------------------------------------------------------------------------*/
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PROCESS(rf_ble_beacon_process, "CC13xx / CC26xx RF BLE Beacon Process");
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/*---------------------------------------------------------------------------*/
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static int
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send_ble_adv_nc(int channel, uint8_t *adv_payload, int adv_payload_len)
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{
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uint32_t cmd_status;
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rfc_CMD_BLE_ADV_NC_t cmd;
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rfc_bleAdvPar_t *params;
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params = (rfc_bleAdvPar_t *)ble_params_buf;
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/* Clear both buffers */
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memset(&cmd, 0x00, sizeof(cmd));
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memset(ble_params_buf, 0x00, sizeof(ble_params_buf));
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/* Adv NC */
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cmd.commandNo = CMD_BLE_ADV_NC;
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cmd.condition.rule = COND_NEVER;
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cmd.whitening.bOverride = 0;
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cmd.whitening.init = 0;
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cmd.pParams = params;
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cmd.channel = channel;
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/* Set up BLE Advertisement parameters */
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params->pDeviceAddress = (uint16_t *)&linkaddr_node_addr.u8[LINKADDR_SIZE - 2];
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params->endTrigger.triggerType = TRIG_NEVER;
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params->endTime = TRIG_NEVER;
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/* Set up BLE Advertisement parameters */
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params = (rfc_bleAdvPar_t *)ble_params_buf;
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params->advLen = adv_payload_len;
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params->pAdvData = adv_payload;
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if(rf_core_send_cmd((uint32_t)&cmd, &cmd_status) == RF_CORE_CMD_ERROR) {
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PRINTF("send_ble_adv_nc: Chan=%d CMDSTA=0x%08lx, status=0x%04x\n",
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channel, cmd_status, cmd.status);
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return RF_CORE_CMD_ERROR;
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}
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/* Wait until the command is done */
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if(rf_core_wait_cmd_done(&cmd) != RF_CORE_CMD_OK) {
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PRINTF("send_ble_adv_nc: Chan=%d CMDSTA=0x%08lx, status=0x%04x\n",
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channel, cmd_status, cmd.status);
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return RF_CORE_CMD_ERROR;
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}
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return RF_CORE_CMD_OK;
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}
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/*---------------------------------------------------------------------------*/
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void
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rf_ble_beacond_config(clock_time_t interval, const char *name)
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{
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if(RF_BLE_ENABLED == 0) {
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return;
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}
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if(name != NULL) {
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if(strlen(name) == 0 || strlen(name) >= BLE_ADV_NAME_BUF_LEN) {
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return;
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}
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memset(beacond_config.adv_name, 0, BLE_ADV_NAME_BUF_LEN);
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memcpy(beacond_config.adv_name, name, strlen(name));
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}
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if(interval != 0) {
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beacond_config.interval = interval;
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}
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}
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/*---------------------------------------------------------------------------*/
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uint8_t
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rf_ble_beacond_start()
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{
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if(RF_BLE_ENABLED == 0) {
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return RF_CORE_CMD_ERROR;
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}
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if(ti_lib_chipinfo_supports_ble() == false) {
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return RF_CORE_CMD_ERROR;
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}
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if(beacond_config.adv_name[0] == 0) {
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return RF_CORE_CMD_ERROR;
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}
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ble_mode_on = RF_BLE_IDLE;
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process_start(&rf_ble_beacon_process, NULL);
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return RF_CORE_CMD_OK;
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}
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/*---------------------------------------------------------------------------*/
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uint8_t
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rf_ble_is_active()
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{
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return ble_mode_on;
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}
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/*---------------------------------------------------------------------------*/
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void
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rf_ble_beacond_stop()
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{
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process_exit(&rf_ble_beacon_process);
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}
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/*---------------------------------------------------------------------------*/
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static uint8_t
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rf_radio_setup()
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{
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uint32_t cmd_status;
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rfc_CMD_RADIO_SETUP_t cmd;
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/* Create radio setup command */
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rf_core_init_radio_op((rfc_radioOp_t *)&cmd, sizeof(cmd), CMD_RADIO_SETUP);
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cmd.txPower = tx_power;
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cmd.pRegOverride = ble_overrides;
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cmd.config.frontEndMode = RF_CORE_RADIO_SETUP_FRONT_END_MODE;
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cmd.config.biasMode = RF_CORE_RADIO_SETUP_BIAS_MODE;
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cmd.mode = 0;
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/* Send Radio setup to RF Core */
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if(rf_core_send_cmd((uint32_t)&cmd, &cmd_status) != RF_CORE_CMD_OK) {
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PRINTF("rf_radio_setup: CMDSTA=0x%08lx, status=0x%04x\n",
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cmd_status, cmd.status);
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return RF_CORE_CMD_ERROR;
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}
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/* Wait until radio setup is done */
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if(rf_core_wait_cmd_done(&cmd) != RF_CORE_CMD_OK) {
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PRINTF("rf_radio_setup: wait, CMDSTA=0x%08lx, status=0x%04x\n",
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cmd_status, cmd.status);
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return RF_CORE_CMD_ERROR;
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}
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return RF_CORE_CMD_OK;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(rf_ble_beacon_process, ev, data)
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{
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uint8_t was_on;
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int j;
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uint32_t cmd_status;
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bool interrupts_disabled;
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PROCESS_BEGIN();
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while(1) {
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etimer_set(&ble_adv_et, beacond_config.interval);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&ble_adv_et) || ev == PROCESS_EVENT_EXIT);
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if(ev == PROCESS_EVENT_EXIT) {
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PROCESS_EXIT();
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}
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/* Set the adv payload each pass: The device name may have changed */
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p = 0;
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/* device info */
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memset(payload, 0, BLE_ADV_PAYLOAD_BUF_LEN);
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payload[p++] = 0x02; /* 2 bytes */
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payload[p++] = BLE_ADV_TYPE_DEVINFO;
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payload[p++] = 0x1a; /* LE general discoverable + BR/EDR */
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payload[p++] = 1 + strlen(beacond_config.adv_name);
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payload[p++] = BLE_ADV_TYPE_NAME;
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memcpy(&payload[p], beacond_config.adv_name,
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strlen(beacond_config.adv_name));
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p += strlen(beacond_config.adv_name);
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for(i = 0; i < BLE_ADV_MESSAGES; i++) {
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/*
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* Under ContikiMAC, some IEEE-related operations will be called from an
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* interrupt context. We need those to see that we are in BLE mode.
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*/
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interrupts_disabled = ti_lib_int_master_disable();
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ble_mode_on = RF_BLE_ACTIVE;
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if(!interrupts_disabled) {
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ti_lib_int_master_enable();
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}
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/*
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* Send BLE_ADV_MESSAGES beacon bursts. Each burst on all three
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* channels, with a BLE_ADV_DUTY_CYCLE interval between bursts
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*
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* First, determine our state:
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*
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* If we are running NullRDC, we are likely in IEEE RX mode. We need to
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* abort the IEEE BG Op before entering BLE mode.
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* If we are ContikiMAC, we are likely off, in which case we need to
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* boot the CPE before entering BLE mode
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*/
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was_on = rf_core_is_accessible();
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if(was_on) {
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/*
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* We were on: If we are in the process of receiving a frame, abort the
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* BLE beacon burst. Otherwise, terminate the primary radio Op so we
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* can switch to BLE mode
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*/
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if(NETSTACK_RADIO.receiving_packet()) {
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PRINTF("rf_ble_beacon_process: We were receiving\n");
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/* Abort this pass */
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break;
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}
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rf_core_primary_mode_abort();
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} else {
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/* Request the HF XOSC to source the HF clock. */
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oscillators_request_hf_xosc();
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/* We were off: Boot the CPE */
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if(rf_core_boot() != RF_CORE_CMD_OK) {
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PRINTF("rf_ble_beacon_process: rf_core_boot() failed\n");
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/* Abort this pass */
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break;
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}
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/* Trigger a switch to the XOSC, so that we can use the FS */
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oscillators_switch_to_hf_xosc();
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}
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/* Enter BLE mode */
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if(rf_radio_setup() != RF_CORE_CMD_OK) {
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PRINTF("cc26xx_rf_ble_beacon_process: Error entering BLE mode\n");
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/* Continue so we can at least try to restore our previous state */
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} else {
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/* Send advertising packets on all 3 advertising channels */
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for(j = 37; j <= 39; j++) {
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if(send_ble_adv_nc(j, payload, p) != RF_CORE_CMD_OK) {
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PRINTF("cc26xx_rf_ble_beacon_process: Channel=%d, "
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"Error advertising\n", j);
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/* Break the loop, but don't return just yet */
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break;
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}
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}
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}
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/* Send a CMD_STOP command to RF Core */
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if(rf_core_send_cmd(CMDR_DIR_CMD(CMD_STOP), &cmd_status) != RF_CORE_CMD_OK) {
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PRINTF("cc26xx_rf_ble_beacon_process: status=0x%08lx\n", cmd_status);
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/* Continue... */
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}
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if(was_on) {
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/* We were on, go back to previous primary mode */
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rf_core_primary_mode_restore();
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} else {
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/* We were off. Shut back off */
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rf_core_power_down();
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/* Switch HF clock source to the RCOSC to preserve power */
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oscillators_switch_to_hf_rc();
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}
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etimer_set(&ble_adv_et, BLE_ADV_DUTY_CYCLE);
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interrupts_disabled = ti_lib_int_master_disable();
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ble_mode_on = RF_BLE_IDLE;
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if(!interrupts_disabled) {
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ti_lib_int_master_enable();
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}
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/* Wait unless this is the last burst */
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if(i < BLE_ADV_MESSAGES - 1) {
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&ble_adv_et));
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}
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}
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interrupts_disabled = ti_lib_int_master_disable();
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ble_mode_on = RF_BLE_IDLE;
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if(!interrupts_disabled) {
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ti_lib_int_master_enable();
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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