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nes-proj/arch/cpu/cc26xx-cc13xx/rf-core/ble-hal/ble-hal-cc26xx.c

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/*
* Copyright (c) 2017, Graz University of Technology
* Copyright (c) 2018, University of Bristol - http://www.bristol.ac.uk/
* 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.
*/
/**
* \file
* BLE radio hardware abstraction implementation for the TI CC26XX controller
*
* \author
* Michael Spoerk <michael.spoerk@tugraz.at>
* Jinyan BAI <onefreebjy@outlook.com>
*/
/*---------------------------------------------------------------------------*/
#include "lpm.h"
#include "sys/rtimer.h"
#include "sys/process.h"
#include "os/dev/ble-hal.h"
#include "dev/oscillators.h"
#include "ble-addr.h"
#include "net/netstack.h"
#include "net/packetbuf.h"
#include "rf_data_entry.h"
#include "rf-core/rf-core.h"
#include "rf_ble_cmd.h"
#include "lib/random.h"
#include "ioc.h"
#include "ti-lib.h"
#include "inc/hw_types.h"
#include "inc/hw_rfc_dbell.h"
#include <string.h>
#include "rf-core/ble-hal/rf-ble-cmd.h"
#if RADIO_CONF_BLE5
#include "rf_patches/rf_patch_cpe_bt5.h"
#endif
/*---------------------------------------------------------------------------*/
#include "sys/log.h"
#define LOG_MODULE "BLE-RADIO"
#define LOG_LEVEL LOG_LEVEL_MAIN
/*---------------------------------------------------------------------------*/
#define CMD_GET_STATUS(X) (((rfc_radioOp_t *)X)->status)
#define RX_ENTRY_STATUS(X) (((rfc_dataEntry_t *)X)->status)
#define RX_ENTRY_LENGTH(X) (((rfc_dataEntry_t *)X)->length)
#define RX_ENTRY_TYPE(X) (((rfc_dataEntry_t *)X)->config.type)
#define RX_ENTRY_NEXT_ENTRY(X) (((rfc_dataEntry_t *)X)->pNextEntry)
#define RX_ENTRY_DATA_LENGTH(X) ((X)[8])
#define RX_ENTRY_DATA_PTR(X) (&(X)[9])
#define TX_ENTRY_STATUS(X) RX_ENTRY_STATUS(X)
#define TX_ENTRY_LENGTH(X) RX_ENTRY_LENGTH(X)
#define TX_ENTRY_TYPE(X) RX_ENTRY_TYPE(X)
#define TX_ENTRY_NEXT_ENTRY(X) RX_ENTRY_NEXT_ENTRY(X)
#define TX_ENTRY_FRAME_TYPE(X) ((X)[8])
#define TX_ENTRY_DATA_PTR(X) (&(X)[9])
/*---------------------------------------------------------------------------*/
/* LPM */
/*---------------------------------------------------------------------------*/
static uint8_t
request(void)
{
if(rf_core_is_accessible()) {
return LPM_MODE_SLEEP;
}
return LPM_MODE_MAX_SUPPORTED;
}
/*---------------------------------------------------------------------------*/
LPM_MODULE(cc26xx_ble_lpm_module, request, NULL, NULL, LPM_DOMAIN_NONE);
/*---------------------------------------------------------------------------*/
/* timing utilities */
#define TIME_UNIT_MS 1000 /* 1000 times per second */
#define TIME_UNIT_0_625_MS 1600 /* 1600 times per second */
#define TIME_UNIT_1_25_MS 800 /* 800 times per second */
#define TIME_UNIT_10_MS 100 /* 100 times per second */
#define TIME_UNIT_RF_CORE 4000000 /* runs at 4 MHz */
#define TIME_UNIT_RTIMER RTIMER_SECOND
rtimer_clock_t
ticks_from_unit(uint32_t value, uint32_t unit)
{
double temp = (((double)value) / unit) * RTIMER_SECOND;
return (rtimer_clock_t)temp;
}
uint32_t
ticks_to_unit(rtimer_clock_t value, uint32_t unit)
{
double temp = (((double)value) / RTIMER_SECOND) * unit;
return (uint32_t)temp;
}
/*---------------------------------------------------------------------------*/
#if RADIO_CONF_BLE5
#define CMD_BUFFER_SIZE 28
#define PARAM_BUFFER_SIZE 48
#define OUTPUT_BUFFER_SIZE 24
#else
#define CMD_BUFFER_SIZE 24
#define PARAM_BUFFER_SIZE 36
#define OUTPUT_BUFFER_SIZE 24
#endif
/*---------------------------------------------------------------------------*/
/* ADVERTISING data structures */
#define ADV_RX_BUFFERS_OVERHEAD 8
#define ADV_RX_BUFFERS_DATA_LEN 60
#define ADV_RX_BUFFERS_LEN (ADV_RX_BUFFERS_OVERHEAD + ADV_RX_BUFFERS_DATA_LEN)
#define ADV_RX_BUFFERS_NUM 2
#define ADV_PREPROCESSING_TIME_TICKS 65
typedef struct {
/* PARAMETER */
uint16_t adv_interval;
ble_adv_type_t adv_type;
ble_addr_type_t own_addr_type;
uint8_t channel_map;
uint8_t adv_data_len;
uint8_t adv_data[BLE_ADV_DATA_LEN];
uint8_t scan_rsp_data_len;
uint8_t scan_rsp_data[BLE_ADV_DATA_LEN];
/* STATE information */
uint8_t active;
rtimer_clock_t start_rt;
struct rtimer timer;
/* utility */
uint8_t cmd_buf[CMD_BUFFER_SIZE];
uint8_t param_buf[PARAM_BUFFER_SIZE];
uint8_t output_buf[OUTPUT_BUFFER_SIZE];
dataQueue_t rx_queue;
uint8_t rx_buffers[ADV_RX_BUFFERS_NUM][ADV_RX_BUFFERS_LEN];
uint8_t *rx_queue_current;
} ble_adv_param_t;
static ble_adv_param_t adv_param;
static void advertising_event(struct rtimer *t, void *ptr);
/*---------------------------------------------------------------------------*/
/* CONNECTION data structures */
#define BLE_MODE_MAX_CONNECTIONS 1
/* maximum packet length that is transmitted during a single connection event*/
#ifdef BLE_MODE_CONF_CONN_MAX_PACKET_SIZE
#define BLE_MODE_CONN_MAX_PACKET_SIZE BLE_MODE_CONF_CONN_MAX_PACKET_SIZE
#else
#define BLE_MODE_CONN_MAX_PACKET_SIZE 256
#endif
#define CONN_BLE_BUFFER_SIZE 27 /* maximum size of the data buffer */
#define CONN_RX_BUFFERS_OVERHEAD 8
#define CONN_RX_BUFFERS_DATA_LEN 60
#define CONN_RX_BUFFERS_LEN (CONN_RX_BUFFERS_OVERHEAD + CONN_RX_BUFFERS_DATA_LEN)
#define CONN_RX_BUFFERS_NUM 12
/* custom status used for tx buffers */
#define DATA_ENTRY_FREE 5
#define DATA_ENTRY_QUEUED 6
#define CONN_TX_BUFFERS_OVERHEAD 9
#define CONN_TX_BUFFERS_DATA_LEN 27
#define CONN_TX_BUFFERS_LEN (CONN_TX_BUFFERS_OVERHEAD + CONN_TX_BUFFERS_DATA_LEN)
#define CONN_TX_BUFFERS_NUM 12
#define CONN_WIN_SIZE 1
#define CONN_WIN_OFFSET 20
#define CONN_EVENT_LATENCY_THRESHOLD 10
#define CONN_WINDOW_WIDENING_TICKS 30 /* appr. 0.46 ms */
#define CONN_PREPROCESSING_TIME_TICKS 100 /* 1.5 ms */
#define CONN_UPDATE_DELAY 6
typedef struct {
/* PARAMETER */
uint8_t peer_address[BLE_ADDR_SIZE];
uint32_t access_address;
uint8_t crc_init_0;
uint8_t crc_init_1;
uint8_t crc_init_2;
uint8_t win_size;
uint16_t win_offset;
uint16_t interval;
uint16_t latency;
uint16_t timeout;
uint64_t channel_map;
uint8_t num_used_channels;
uint8_t hop;
uint8_t sca;
rtimer_clock_t timestamp_rt;
/* STATE information */
uint8_t active;
uint16_t counter;
uint8_t unmapped_channel;
uint8_t mapped_channel;
rtimer_clock_t start_rt;
uint16_t conn_handle;
struct rtimer timer;
/* utility */
uint8_t cmd_buf[CMD_BUFFER_SIZE];
uint8_t param_buf[PARAM_BUFFER_SIZE];
uint8_t output_buf[OUTPUT_BUFFER_SIZE];
dataQueue_t rx_queue;
uint8_t rx_buffers[CONN_RX_BUFFERS_NUM][CONN_RX_BUFFERS_LEN];
uint8_t *rx_queue_current;
dataQueue_t tx_queue;
uint8_t tx_buffers[CONN_TX_BUFFERS_NUM][CONN_TX_BUFFERS_LEN];
uint8_t tx_buffers_sent;
uint16_t skipped_events;
/* channel map update */
uint64_t channel_update_channel_map;
uint16_t channel_update_counter;
uint8_t channel_update_num_used_channels;
/* connection parameter update */
uint8_t conn_update_win_size;
uint16_t conn_update_win_offset;
uint16_t conn_update_interval;
uint16_t conn_update_latency;
uint16_t conn_update_timeout;
uint16_t conn_update_counter;
} ble_conn_param_t;
static ble_conn_param_t conn_param[BLE_MODE_MAX_CONNECTIONS];
static uint16_t conn_counter = 0;
static void connection_event_slave(struct rtimer *t, void *ptr);
/*---------------------------------------------------------------------------*/
PROCESS(ble_hal_conn_rx_process, "BLE/CC26xx connection RX process");
process_event_t rx_data_event;
/*---------------------------------------------------------------------------*/
static void
setup_buffers(void)
{
uint8_t conn_count;
ble_conn_param_t *conn;
uint8_t i;
rfc_dataEntry_t *entry;
/* setup advertisement RX buffer (circular buffer) */
memset(&adv_param, 0x00, sizeof(ble_adv_param_t));
memset(&adv_param.rx_queue, 0x00, sizeof(adv_param.rx_queue));
adv_param.rx_queue.pCurrEntry = adv_param.rx_buffers[0];
adv_param.rx_queue.pLastEntry = NULL;
adv_param.rx_queue_current = adv_param.rx_buffers[0];
for(i = 0; i < ADV_RX_BUFFERS_NUM; i++) {
memset(&adv_param.rx_buffers[i], 0x00, ADV_RX_BUFFERS_LEN);
entry = (rfc_dataEntry_t *)adv_param.rx_buffers[i];
entry->pNextEntry = adv_param.rx_buffers[(i + 1) % ADV_RX_BUFFERS_NUM];
entry->config.lenSz = 1;
entry->length = ADV_RX_BUFFERS_DATA_LEN;
}
memset(conn_param, 0x00, sizeof(ble_conn_param_t) * BLE_MODE_MAX_CONNECTIONS);
for(conn_count = 0; conn_count < BLE_MODE_MAX_CONNECTIONS; conn_count++) {
/* setup connection RX buffer (circular buffer) */
conn = &conn_param[conn_count];
memset(&conn->rx_queue, 0x00, sizeof(conn->rx_queue));
conn->rx_queue.pCurrEntry = conn->rx_buffers[0];
conn->rx_queue.pLastEntry = NULL;
conn->rx_queue_current = conn->rx_buffers[0];
for(i = 0; i < CONN_RX_BUFFERS_NUM; i++) {
memset(&conn->rx_buffers[i], 0x00, CONN_RX_BUFFERS_LEN);
entry = (rfc_dataEntry_t *)conn->rx_buffers[i];
entry->pNextEntry = conn->rx_buffers[(i + 1) % CONN_RX_BUFFERS_NUM];
entry->config.lenSz = 1;
entry->length = CONN_RX_BUFFERS_DATA_LEN;
}
/* setup connection TX buffer (buffers are added on demand to the queue) */
memset(&conn->tx_queue, 0x00, sizeof(conn->tx_queue));
conn->tx_queue.pCurrEntry = NULL;
conn->tx_queue.pLastEntry = NULL;
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
memset(&conn->tx_buffers[i], 0x00, CONN_TX_BUFFERS_LEN);
entry = (rfc_dataEntry_t *)conn->tx_buffers[i];
entry->config.lenSz = 1;
entry->status = DATA_ENTRY_FREE;
}
}
}
/*---------------------------------------------------------------------------*/
static ble_conn_param_t *
get_connection_for_handle(uint8_t conn_handle)
{
uint8_t i;
for(i = 0; i < BLE_MODE_MAX_CONNECTIONS; i++) {
if(conn_param[i].conn_handle == conn_handle) {
return &conn_param[i];
}
}
return NULL;
}
/*---------------------------------------------------------------------------*/
static uint8_t *
tx_queue_get_buffer(ble_conn_param_t *param)
{
uint8_t i;
rfc_dataEntry_t *entry;
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
entry = (rfc_dataEntry_t *)param->tx_buffers[i];
if(entry->status == DATA_ENTRY_FREE) {
return (uint8_t *)entry;
}
}
return NULL;
}
/*---------------------------------------------------------------------------*/
static uint16_t
tx_queue_count_free_buffers(ble_conn_param_t *param)
{
uint16_t i;
uint16_t free_bufs = 0;
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
if(TX_ENTRY_STATUS(param->tx_buffers[i]) == DATA_ENTRY_FREE) {
free_bufs++;
}
}
return free_bufs;
}
/*---------------------------------------------------------------------------*/
static uint8_t
tx_queue_data_to_transmit(ble_conn_param_t *param)
{
uint16_t i;
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
if(TX_ENTRY_STATUS(param->tx_buffers[i]) == DATA_ENTRY_QUEUED) {
return 1;
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
ble_result_t
on(void)
{
oscillators_request_hf_xosc();
if(!rf_core_is_accessible()) {
/* boot the rf core */
/* boot and apply Bluetooth 5 Patch */
if(rf_core_power_up() != RF_CORE_CMD_OK) {
LOG_ERR("rf_core_boot: rf_core_power_up() failed\n");
rf_core_power_down();
return RF_CORE_CMD_ERROR;
}
#if RADIO_CONF_BLE5
/* Apply Bluetooth 5 patch, if applicable */
rf_patch_cpe_bt5();
#endif
if(rf_core_start_rat() != RF_CORE_CMD_OK) {
LOG_ERR("rf_core_boot: rf_core_start_rat() failed\n");
rf_core_power_down();
return RF_CORE_CMD_ERROR;
}
rf_core_setup_interrupts();
oscillators_switch_to_hf_xosc();
if(rf_ble_cmd_setup_ble_mode() != RF_BLE_CMD_OK) {
LOG_ERR("could not setup rf-core to BLE mode\n");
return BLE_RESULT_ERROR;
}
}
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
void
off(void)
{
rf_core_power_down();
oscillators_switch_to_hf_rc();
}
/*---------------------------------------------------------------------------*/
static ble_result_t
reset(void)
{
LOG_INFO("maximum connections: %4d\n", BLE_MODE_MAX_CONNECTIONS);
LOG_INFO("max. packet length: %4d\n", BLE_MODE_CONN_MAX_PACKET_SIZE);
lpm_register_module(&cc26xx_ble_lpm_module);
rf_core_set_modesel();
setup_buffers();
if(on() != BLE_RESULT_OK) {
return BLE_RESULT_ERROR;
}
off();
if(!process_is_running(&ble_hal_conn_rx_process)) {
rx_data_event = process_alloc_event();
process_start(&ble_hal_conn_rx_process, NULL);
}
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
read_bd_addr(uint8_t *addr)
{
ble_addr_cpy_to(addr);
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
read_buffer_size(unsigned int *buf_len, unsigned int *num_buf)
{
uint16_t i;
uint16_t ll_buffers = CONN_TX_BUFFERS_NUM;
uint16_t packet_buffers;
uint16_t buffer_size;
for(i = 0; i < conn_counter; i++) {
ll_buffers = MIN(ll_buffers, tx_queue_count_free_buffers(&conn_param[i]));
}
packet_buffers = ll_buffers / (BLE_MODE_CONN_MAX_PACKET_SIZE / CONN_BLE_BUFFER_SIZE);
buffer_size = BLE_MODE_CONN_MAX_PACKET_SIZE;
memcpy(buf_len, &buffer_size, 2);
memcpy(num_buf, &packet_buffers, 2);
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
set_adv_param(unsigned int adv_int, ble_adv_type_t type,
ble_addr_type_t own_type, unsigned short adv_map)
{
adv_param.adv_interval = adv_int;
adv_param.adv_type = type;
adv_param.own_addr_type = own_type;
adv_param.channel_map = adv_map;
LOG_INFO("advertising parameter: interval: %4d, channels: %2d\n",
adv_param.adv_interval, adv_param.channel_map);
LOG_DBG("interval: %16u (ms)\n", adv_param.adv_interval);
LOG_DBG("type: %16u\n", adv_param.adv_type);
LOG_DBG("addr_type:%16u\n", adv_param.own_addr_type);
LOG_DBG("channels: %16u\n", adv_param.channel_map);
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
read_adv_channel_tx_power(short *power)
{
return BLE_RESULT_NOT_SUPPORTED;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
set_adv_data(unsigned short data_len, char *data)
{
if(data_len > BLE_ADV_DATA_LEN) {
LOG_WARN("BLE-HAL: adv_data too long\n");
return BLE_RESULT_INVALID_PARAM;
}
adv_param.adv_data_len = data_len;
memcpy(adv_param.adv_data, data, data_len);
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
set_scan_resp_data(unsigned short data_len, char *data)
{
if(data_len > BLE_SCAN_RESP_DATA_LEN) {
LOG_WARN("BLE-HAL: scan_resp_data too long\n");
return BLE_RESULT_INVALID_PARAM;
}
adv_param.scan_rsp_data_len = data_len;
memcpy(adv_param.scan_rsp_data, data, data_len);
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
set_adv_enable(unsigned short enable)
{
uint32_t now = RTIMER_NOW();
if((enable) && (!adv_param.active)) {
adv_param.start_rt = now + ticks_from_unit(adv_param.adv_interval,
TIME_UNIT_1_25_MS);
rtimer_set(&adv_param.timer, adv_param.start_rt,
0, advertising_event, (void *)&adv_param);
}
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
send_frame(ble_conn_param_t *conn, uint8_t *data, uint8_t data_len, uint8_t frame_type)
{
uint8_t *tx_buffer = tx_queue_get_buffer(conn);
if(tx_buffer == NULL) {
LOG_WARN("BLE-HAL: send_frame: no TX buffer available (conn_handle: 0x%04X)\n", conn->conn_handle);
return BLE_RESULT_ERROR;
}
if(data_len > CONN_BLE_BUFFER_SIZE) {
LOG_WARN("BLE-HAL: send_frame: data too long (%d bytes)\n", data_len);
return BLE_RESULT_ERROR;
}
memcpy(TX_ENTRY_DATA_PTR(tx_buffer), data, data_len);
TX_ENTRY_LENGTH(tx_buffer) = data_len + 1;
TX_ENTRY_STATUS(tx_buffer) = DATA_ENTRY_QUEUED;
TX_ENTRY_FRAME_TYPE(tx_buffer) = frame_type;
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
connection_update(unsigned int connection_handle, unsigned int conn_interval,
unsigned int conn_latency, unsigned int supervision_timeout)
{
uint8_t len = 0;
uint8_t data[24];
ble_conn_param_t *conn = get_connection_for_handle(connection_handle);
if(conn == NULL) {
return BLE_RESULT_ERROR;
}
LOG_INFO("connection_update: handle: 0x%04X, interval: %4d, latency: %2d, timeout: %4d\n",
connection_handle, conn_interval, conn_latency, supervision_timeout);
#if UIP_CONF_ROUTER
uint16_t instant = conn->counter + CONN_UPDATE_DELAY;
/* prepare connection update packet */
data[0] = BLE_LL_CONN_UPDATE_REQ;
data[1] = conn->win_size;
data[2] = 0;
data[3] = 0;
memcpy(&data[4], &conn_interval, 2);
memcpy(&data[6], &conn_latency, 2);
memcpy(&data[8], &supervision_timeout, 2);
memcpy(&data[10], &instant, 2);
len = 12;
/* set new connection */
conn->conn_update_win_size = conn->win_size;
conn->conn_update_interval = conn_interval;
conn->conn_update_latency = conn_latency;
conn->conn_update_timeout = supervision_timeout;
conn->conn_update_counter = instant;
if(send_frame(conn, data, len, BLE_DATA_PDU_LLID_CONTROL) != BLE_RESULT_OK) {
LOG_ERR("connection_update: send frame was NOT successful\n");
return BLE_RESULT_ERROR;
}
#else
data[0] = BLE_LL_CONN_PARAM_REQ;
memcpy(&data[1], &conn_interval, 2); /* interval min */
memcpy(&data[3], &conn_interval, 2); /* interval max */
memcpy(&data[5], &conn_latency, 2); /* latency */
memcpy(&data[7], &supervision_timeout, 2); /* supervision timeout */
memcpy(&data[9], &conn_interval, 1); /* preferred periodicity */
memcpy(&data[10], &conn->counter, 2); /* referenc conn event count */
memset(&data[12], 0xFF, 12); /* offset 0 to 5 */
len = 24;
if(send_frame(conn, data, len, BLE_DATA_PDU_LLID_CONTROL) != BLE_RESULT_OK) {
LOG_ERR("connection_update: send frame was NOT successful\n");
return BLE_RESULT_ERROR;
}
#endif
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
send(void *buf, unsigned short buf_len)
{
uint16_t loop_data;
uint16_t loop_conn;
ble_conn_param_t *conn;
uint8_t *data;
uint16_t data_len;
linkaddr_t dest_addr;
linkaddr_t conn_addr;
uint8_t result;
linkaddr_copy(&dest_addr, packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
LOG_DBG("ble-hal: sending %d bytes\n", buf_len);
for(loop_conn = 0; loop_conn < conn_counter; loop_conn++) {
conn = &conn_param[loop_conn];
ble_addr_to_eui64(conn_addr.u8, conn->peer_address);
if((linkaddr_cmp(&dest_addr, &linkaddr_null) != 0) || (linkaddr_cmp(&dest_addr, &conn_addr) != 0)) {
for(loop_data = 0; loop_data < buf_len; loop_data += CONN_BLE_BUFFER_SIZE) {
data = &((uint8_t *)buf)[loop_data];
data_len = MIN((buf_len - loop_data), CONN_BLE_BUFFER_SIZE);
if(loop_data == 0) {
result = send_frame(conn, data, data_len, BLE_DATA_PDU_LLID_DATA_MESSAGE);
} else {
result = send_frame(conn, data, data_len, BLE_DATA_PDU_LLID_DATA_FRAGMENT);
}
if(result != BLE_RESULT_OK) {
LOG_WARN("ble-hal: send was unsuccessful\n");
return result;
}
}
}
}
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
static ble_result_t
read_connection_interval(unsigned int conn_handle, unsigned int *conn_interval)
{
ble_conn_param_t *conn = get_connection_for_handle(conn_handle);
if(conn == NULL) {
memset(conn_interval, 0x00, sizeof(uint16_t));
return BLE_RESULT_ERROR;
}
memcpy(conn_interval, &conn->interval, sizeof(uint16_t));
return BLE_RESULT_OK;
}
/*---------------------------------------------------------------------------*/
const struct ble_hal_driver ble_hal =
{
reset,
read_bd_addr,
read_buffer_size,
set_adv_param,
read_adv_channel_tx_power,
set_adv_data,
set_scan_resp_data,
set_adv_enable,
NULL,
NULL,
NULL,
NULL,
connection_update,
NULL,
send,
NULL,
read_connection_interval
};
/*---------------------------------------------------------------------------*/
static void
advertising_rx(ble_adv_param_t *param)
{
uint8_t i;
uint8_t offset = 14;
uint8_t *rx_data;
ble_conn_param_t *c_param = &conn_param[0];
rtimer_clock_t wakeup;
while(RX_ENTRY_STATUS(param->rx_queue_current) == DATA_ENTRY_FINISHED) {
rx_data = RX_ENTRY_DATA_PTR(param->rx_queue_current);
if(CMD_GET_STATUS(param->cmd_buf) == RF_CORE_RADIO_OP_STATUS_BLE_DONE_CONNECT) {
/* parsing connection parameter */
for(i = 0; i < BLE_ADDR_SIZE; i++) {
c_param->peer_address[i] = rx_data[BLE_ADDR_SIZE + 1 - i];
}
memcpy(&c_param->access_address, &rx_data[offset], 4);
memcpy(&c_param->crc_init_0, &rx_data[offset + 4], 1);
memcpy(&c_param->crc_init_1, &rx_data[offset + 5], 1);
memcpy(&c_param->crc_init_2, &rx_data[offset + 6], 1);
memcpy(&c_param->win_size, &rx_data[offset + 7], 1);
memcpy(&c_param->win_offset, &rx_data[offset + 8], 2);
memcpy(&c_param->interval, &rx_data[offset + 10], 2);
memcpy(&c_param->latency, &rx_data[offset + 12], 2);
memcpy(&c_param->timeout, &rx_data[offset + 14], 2);
memcpy(&c_param->channel_map, &rx_data[offset + 16], 5);
memcpy(&c_param->hop, &rx_data[offset + 21], 1);
memcpy(&c_param->sca, &rx_data[offset + 21], 1);
memcpy(&c_param->timestamp_rt, &rx_data[offset + 24], 4);
/* convert all received timing values to rtimer ticks */
c_param->timestamp_rt = ticks_from_unit(c_param->timestamp_rt, TIME_UNIT_RF_CORE);
c_param->hop = c_param->hop & 0x1F;
c_param->sca = (c_param->sca >> 5) & 0x07;
LOG_INFO("connection created: conn_int: %4u, latency: %3u, channel_map: %8llX\n",
c_param->interval, c_param->latency, c_param->channel_map);
LOG_DBG("access address: 0x%08lX\n", c_param->access_address);
LOG_DBG("crc0: 0x%02X\n", c_param->crc_init_0);
LOG_DBG("crc1: 0x%02X\n", c_param->crc_init_1);
LOG_DBG("crc2: 0x%02X\n", c_param->crc_init_2);
LOG_DBG("win_size: %4u\n", c_param->win_size);
LOG_DBG("win_offset: %4u\n", c_param->win_offset);
LOG_DBG("interval: %4u\n", c_param->interval);
LOG_DBG("latency: %4u\n", c_param->latency);
LOG_DBG("timeout: %4u\n", c_param->timeout);
LOG_DBG("channel_map: %llX\n", c_param->channel_map);
/* calculate the first anchor point
* (add an interval, because we skip the first connection event ) */
wakeup = c_param->timestamp_rt + ticks_from_unit(c_param->win_offset, TIME_UNIT_1_25_MS) - CONN_WINDOW_WIDENING_TICKS;
wakeup += ticks_from_unit(c_param->interval, TIME_UNIT_1_25_MS) - CONN_PREPROCESSING_TIME_TICKS;
rtimer_set(&c_param->timer, wakeup, 0, connection_event_slave, (void *)c_param);
/* initialization for the connection */
c_param->counter = 0;
c_param->unmapped_channel = 0;
c_param->conn_handle = conn_counter;
c_param->active = 1;
conn_counter++;
LOG_INFO("BLE-HAL: connection (0x%04X) created\n", c_param->conn_handle);
}
/* free current entry (clear BLE data length & reset status) */
RX_ENTRY_DATA_LENGTH(param->rx_queue_current) = 0;
RX_ENTRY_STATUS(param->rx_queue_current) = DATA_ENTRY_PENDING;
param->rx_queue_current = RX_ENTRY_NEXT_ENTRY(param->rx_queue_current);
}
}
/*---------------------------------------------------------------------------*/
static void
advertising_event(struct rtimer *t, void *ptr)
{
ble_adv_param_t *param = (ble_adv_param_t *)ptr;
uint32_t wakeup;
if(on() != BLE_RESULT_OK) {
LOG_ERR("BLE-HAL: advertising event: could not enable rf core\n");
return;
}
rf_ble_cmd_create_adv_params(param->param_buf, &param->rx_queue,
param->adv_data_len, param->adv_data,
param->scan_rsp_data_len, param->scan_rsp_data,
param->own_addr_type, (uint8_t *)BLE_ADDR_LOCATION);
/* advertising on advertisement channel 1*/
if(param->channel_map & BLE_ADV_CHANNEL_1_MASK) {
rf_ble_cmd_create_adv_cmd(param->cmd_buf, BLE_ADV_CHANNEL_1,
param->param_buf, param->output_buf);
rf_ble_cmd_send(param->cmd_buf);
rf_ble_cmd_wait(param->cmd_buf);
}
off();
advertising_rx(param);
if(conn_param[0].active == 1) {
LOG_INFO("stop advertising\n");
return;
}
param->start_rt = param->start_rt + ticks_from_unit(param->adv_interval, TIME_UNIT_MS);
wakeup = adv_param.start_rt - ADV_PREPROCESSING_TIME_TICKS;
rtimer_set(&param->timer, wakeup, 0, advertising_event, (void *)param);
}
/*---------------------------------------------------------------------------*/
static void
update_data_channel(ble_conn_param_t *param)
{
uint8_t i;
uint8_t j;
uint8_t remap_index;
/* perform the data channel selection according to BLE standard */
/* calculate unmapped channel*/
param->unmapped_channel = (param->unmapped_channel + param->hop) % (BLE_DATA_CHANNEL_MAX + 1);
/* map the calculated channel */
if(param->channel_map & (1ULL << param->unmapped_channel)) {
/* channel is marked as used */
param->mapped_channel = param->unmapped_channel;
} else {
remap_index = param->unmapped_channel % param->num_used_channels;
j = 0;
for(i = 0; i < (BLE_DATA_CHANNEL_MAX + 1); i++) {
if(param->channel_map & (1ULL << i)) {
if(j == remap_index) {
param->mapped_channel = i;
}
j++;
}
}
}
}
/*---------------------------------------------------------------------------*/
static void
process_ll_ctrl_msg(ble_conn_param_t *conn, uint8_t input_len, uint8_t *input, uint8_t *output_len, uint8_t *output)
{
uint8_t op_code = input[0];
uint16_t interval;
uint16_t latency;
uint16_t timeout;
uint64_t channel_map = 0;
uint16_t instant = 0;
uint8_t i;
if(op_code == BLE_LL_CONN_UPDATE_REQ) {
LOG_INFO("BLE-HAL: connection update request received\n");
memcpy(&conn->conn_update_win_size, &input[1], 1);
memcpy(&conn->conn_update_win_offset, &input[2], 2);
memcpy(&conn->conn_update_interval, &input[4], 2);
memcpy(&conn->conn_update_latency, &input[6], 2);
memcpy(&conn->conn_update_timeout, &input[8], 2);
memcpy(&conn->conn_update_counter, &input[10], 2);
} else if(op_code == BLE_LL_CHANNEL_MAP_REQ) {
LOG_INFO("BLE-HAL: channel map update received\n");
memcpy(&channel_map, &input[1], 5);
memcpy(&instant, &input[6], 2);
conn->channel_update_channel_map = channel_map;
conn->channel_update_counter = instant;
conn->channel_update_num_used_channels = 0;
for(i = 0; i <= BLE_DATA_CHANNEL_MAX; i++) {
if(channel_map & (1ULL << i)) {
conn->channel_update_num_used_channels++;
}
}
} else if(op_code == BLE_LL_FEATURE_REQ) {
LOG_INFO("BLE-HAL: feature request received\n");
output[0] = BLE_LL_FEATURE_RSP;
memset(&output[1], 0x00, 8);
*output_len = 9;
} else if(op_code == BLE_LL_VERSION_IND) {
LOG_INFO("BLE-HAL: version request received\n");
output[0] = BLE_LL_VERSION_IND;
output[1] = 7;
memset(&output[2], 0xAA, 4);
*output_len = 6;
} else if(op_code == BLE_LL_CONN_PARAM_REQ) {
LOG_INFO("BLE-HAL: connection parameter request received\n");
memcpy(&interval, &input[1], 2); /* use interval min */
memcpy(&latency, &input[5], 2);
memcpy(&timeout, &input[7], 2);
connection_update(conn->conn_handle, interval, latency, timeout);
} else {
LOG_WARN("BLE-HAL: unknown LL control code: %02X\n", op_code);
}
}
/*---------------------------------------------------------------------------*/
static void
connection_rx(ble_conn_param_t *param)
{
uint8_t header_offset = 2;
uint8_t *rx_data;
uint16_t len;
uint8_t channel;
uint8_t frame_type;
uint8_t more_data;
uint8_t rssi;
linkaddr_t sender_addr;
rfc_bleMasterSlaveOutput_t *out_buf = (rfc_bleMasterSlaveOutput_t *)param->output_buf;
uint8_t output_len = 0;
uint8_t output[26];
while(RX_ENTRY_STATUS(param->rx_queue_current) == DATA_ENTRY_FINISHED) {
rx_data = RX_ENTRY_DATA_PTR(param->rx_queue_current);
#if RADIO_CONF_BLE5
len = RX_ENTRY_DATA_LENGTH(param->rx_queue_current) - 7 - 2; /* last 9 bytes are status, timestamp, ... */
#else
len = RX_ENTRY_DATA_LENGTH(param->rx_queue_current) - 6 - 2; /* last 8 bytes are status, timestamp, ... */
#endif
channel = (rx_data[len + 3] & 0x3F);
frame_type = rx_data[0] & 0x03;
more_data = (rx_data[0] & 0x10) >> 4;
if(frame_type == BLE_DATA_PDU_LLID_CONTROL) {
process_ll_ctrl_msg(param, (len - header_offset), &rx_data[header_offset], &output_len, output);
if(output_len > 0) {
send_frame(param, output, output_len, BLE_DATA_PDU_LLID_CONTROL);
}
} else if(frame_type == BLE_DATA_PDU_LLID_DATA_MESSAGE) {
packetbuf_clear();
memcpy(packetbuf_dataptr(), &rx_data[header_offset], len);
packetbuf_set_datalen(len);
rssi = out_buf->lastRssi;
ble_addr_to_eui64(sender_addr.u8, param->peer_address);
packetbuf_set_attr(PACKETBUF_ATTR_RSSI, rssi);
packetbuf_set_attr(PACKETBUF_ATTR_CHANNEL, channel);
packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &linkaddr_node_addr);
packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &sender_addr);
packetbuf_set_attr(PACKETBUF_ATTR_FRAME_TYPE, FRAME_BLE_RX_EVENT);
if((!more_data) || (len < CONN_BLE_BUFFER_SIZE)) {
NETSTACK_MAC.input();
}
} else if(frame_type == BLE_DATA_PDU_LLID_DATA_FRAGMENT) {
memcpy((packetbuf_dataptr() + packetbuf_datalen()), &rx_data[header_offset], len);
packetbuf_set_datalen(packetbuf_datalen() + len);
if((!more_data) || (len < CONN_BLE_BUFFER_SIZE)) {
NETSTACK_MAC.input();
}
}
/* free current entry (clear BLE data length & reset status) */
RX_ENTRY_DATA_LENGTH(param->rx_queue_current) = 0;
RX_ENTRY_STATUS(param->rx_queue_current) = DATA_ENTRY_PENDING;
param->rx_queue_current = RX_ENTRY_NEXT_ENTRY(param->rx_queue_current);
}
}
/*---------------------------------------------------------------------------*/
static void
connection_event_slave(struct rtimer *t, void *ptr)
{
ble_conn_param_t *conn = (ble_conn_param_t *)ptr;
rfc_bleMasterSlaveOutput_t *output = (rfc_bleMasterSlaveOutput_t *)conn->output_buf;
uint8_t first_packet = 0;
rtimer_clock_t wakeup;
uint8_t i;
uint8_t tx_data = tx_queue_data_to_transmit(conn);
if(conn->counter == 0) {
/* the slave skips connection event 0, because it is usually too early */
conn->start_rt = conn->timestamp_rt + ticks_from_unit(conn->win_offset, TIME_UNIT_1_25_MS) - CONN_WINDOW_WIDENING_TICKS;
update_data_channel(conn);
first_packet = 1;
}
conn->counter++;
/* connection timing */
if(conn->counter == conn->conn_update_counter) {
conn->start_rt += ticks_from_unit(conn->interval + conn->conn_update_win_offset, TIME_UNIT_1_25_MS);
conn->win_size = conn->conn_update_win_size;
conn->win_offset = conn->conn_update_win_offset;
conn->interval = conn->conn_update_interval;
conn->latency = conn->conn_update_latency;
conn->timeout = conn->conn_update_timeout;
conn->conn_update_win_size = 0;
conn->conn_update_win_offset = 0;
conn->conn_update_interval = 0;
conn->conn_update_latency = 0;
conn->conn_update_timeout = 0;
} else if(output->pktStatus.bTimeStampValid) {
conn->start_rt = ticks_from_unit(output->timeStamp, TIME_UNIT_RF_CORE) +
ticks_from_unit(conn->interval, TIME_UNIT_1_25_MS) - CONN_WINDOW_WIDENING_TICKS;
} else {
conn->start_rt += ticks_from_unit(conn->interval, TIME_UNIT_1_25_MS);
}
/* connection channel */
if(conn->channel_update_counter == conn->counter) {
conn->channel_map = conn->channel_update_channel_map;
conn->num_used_channels = conn->channel_update_num_used_channels;
conn->channel_update_counter = 0;
conn->channel_update_channel_map = 0;
conn->channel_update_num_used_channels = 0;
}
update_data_channel(conn);
if(tx_data || (conn->skipped_events >= conn->latency) || (conn->counter < CONN_EVENT_LATENCY_THRESHOLD)) {
/* participating in the connection event */
conn->skipped_events = 0;
rf_ble_cmd_create_slave_params(conn->param_buf, &conn->rx_queue, &conn->tx_queue, conn->access_address,
conn->crc_init_0, conn->crc_init_1, conn->crc_init_2,
ticks_to_unit(ticks_from_unit(conn->win_size, TIME_UNIT_1_25_MS), TIME_UNIT_RF_CORE),
ticks_to_unit(CONN_WINDOW_WIDENING_TICKS, TIME_UNIT_RF_CORE), first_packet);
rf_ble_cmd_create_slave_cmd(conn->cmd_buf, conn->mapped_channel, conn->param_buf, conn->output_buf,
ticks_to_unit(conn->start_rt, TIME_UNIT_RF_CORE));
if(on() != BLE_RESULT_OK) {
LOG_ERR("connection_event: could not enable radio core\n");
return;
}
/* append TX buffers */
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
if(TX_ENTRY_STATUS(conn->tx_buffers[i]) == DATA_ENTRY_QUEUED) {
TX_ENTRY_STATUS(conn->tx_buffers[i]) = DATA_ENTRY_PENDING;
rf_ble_cmd_add_data_queue_entry(&conn->tx_queue, conn->tx_buffers[i]);
}
}
rf_ble_cmd_send(conn->cmd_buf);
rf_ble_cmd_wait(conn->cmd_buf);
off();
if(CMD_GET_STATUS(conn->cmd_buf) != RF_CORE_RADIO_OP_STATUS_BLE_DONE_OK) {
LOG_DBG("command status: 0x%04X; connection event counter: %d, channel: %d\n",
CMD_GET_STATUS(conn->cmd_buf), conn->counter, conn->mapped_channel);
}
/* free finished TX buffers */
for(i = 0; i < CONN_TX_BUFFERS_NUM; i++) {
if(TX_ENTRY_STATUS(conn->tx_buffers[i]) == DATA_ENTRY_FINISHED) {
TX_ENTRY_STATUS(conn->tx_buffers[i]) = DATA_ENTRY_FREE;
TX_ENTRY_LENGTH(conn->tx_buffers[i]) = 0;
TX_ENTRY_NEXT_ENTRY(conn->tx_buffers[i]) = NULL;
}
}
} else {
/* skipping connection event */
conn->skipped_events++;
output->pktStatus.bTimeStampValid = 0;
}
wakeup = conn->start_rt + ticks_from_unit(conn->interval, TIME_UNIT_1_25_MS) - CONN_PREPROCESSING_TIME_TICKS;
rtimer_set(&conn->timer, wakeup, 0, connection_event_slave, ptr);
process_post(&ble_hal_conn_rx_process, rx_data_event, ptr);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(ble_hal_conn_rx_process, ev, data) {
ble_conn_param_t *conn = (ble_conn_param_t *)data;
rfc_bleMasterSlaveOutput_t *output = (rfc_bleMasterSlaveOutput_t *)conn->output_buf;
uint8_t tx_buffers_sent;
PROCESS_BEGIN();
LOG_DBG("BLE-HAL: conn rx process start\n");
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == rx_data_event);
/* notify upper layers (L2CAP) when TX buffers were successfully transmitted */
tx_buffers_sent = output->nTxEntryDone - conn->tx_buffers_sent;
if(tx_buffers_sent != 0) {
conn->tx_buffers_sent = output->nTxEntryDone;
packetbuf_set_datalen(0);
packetbuf_set_attr(PACKETBUF_ATTR_FRAME_TYPE, FRAME_BLE_TX_EVENT);
NETSTACK_MAC.input();
}
/* handle RX buffers */
connection_rx(conn);
/* generate an event if the connection parameter were updated */
if(conn->counter == conn->conn_update_counter) {
packetbuf_set_datalen(0);
packetbuf_set_attr(PACKETBUF_ATTR_FRAME_TYPE, FRAME_BLE_CONNECTION_UPDATED);
NETSTACK_MAC.input();
}
}
PROCESS_END();
}
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