iso ble 连接参数限制
上面的设置符合IOS的蓝牙连接规范，改规范如下：
The connection parameter request may be rejected if it does not comply with all of these rules:
Interval Max * (Slave Latency + 1) ≤ 2 seconds
Interval Min ≥ 20 ms
Interval Min + 20 ms ≤ Interval Max
Slave Latency ≤ 4
connSupervisionTimeout ≤ 6 seconds
Interval Max*(Slave Latency+1) * 3 < connSupervisionTimeout
------------------------------------------------------------------------------------
Interval Max = 800*1.25ms = 1000ms (√)
Interval Min = 80*1.25ms = 100ms (√)
Slave Latency = 0 (√)
connSupervisionTimeout =1000*10ms =10s (√)
----------------------------------------------------------------------------------------------------------------------------simple_peripheral.c
// Advertising interval when device is discoverable (units of 625us, 160=100ms) 当设备被发现时的广告间隔#define DEFAULT_ADVERTISING_INTERVAL 160
// General discoverable mode: advertise indefinitely 一般可发现模式:无限广告。
#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_GENERAL
【低功耗蓝牙的发现模式主要分为有限可发现模式和普通可发现模式】
#define DEFAULT_DESIRED_MIN_CONN_INTERVAL 80
// Maximum connection interval (units of 1.25ms, 800=1000ms) for automatic parameter update request 最大连接间隔(1.25ms, 80=100ms)自动参数更新请求。
#define DEFAULT_DESIRED_MAX_CONN_INTERVAL 800
// Slave latency to use for automatic parameter update request //用于自动参数更新请求的从属延迟。
#define DEFAULT_DESIRED_SLAVE_LATENCY 0
// Supervision timeout value (units of 10ms, 1000=10s) for automatic parameter update request //监管超时值(10ms单位，1000=10s)自动参数更新请求。
#define DEFAULT_DESIRED_CONN_TIMEOUT 1000
// After the connection is formed, the peripheral waits until the central device asks for its preferred connection parameters //连接形成后，外围设备等待中央设备请求其首选连接参数。
#define DEFAULT_ENABLE_UPDATE_REQUEST GAPROLE_LINK_PARAM_UPDATE_WAIT_REMOTE_PARAMS// Connection Pause Peripheral time value (in seconds) //连接暂停时间值(以秒为单位)
#define DEFAULT_CONN_PAUSE_PERIPHERAL 6
// How often to perform periodic event (in msec) //多久进行一次定期活动(在msec)
#define SBP_PERIODIC_EVT_PERIOD 30
---------------------------------------------------------------------------------------------------------------------------simple_peripheral.c
uint8_t enableUpdateRequest = DEFAULT_ENABLE_UPDATE_REQUEST;
uint16_t desiredMinInterval = DEFAULT_DESIRED_MIN_CONN_INTERVAL;
uint16_t desiredMaxInterval = DEFAULT_DESIRED_MAX_CONN_INTERVAL;
uint16_t desiredSlaveLatency = DEFAULT_DESIRED_SLAVE_LATENCY;
uint16_t desiredConnTimeout = DEFAULT_DESIRED_CONN_TIMEOUT;
// Set the Peripheral GAPRole Parameters
GAPRole_SetParameter(GAPROLE_ADVERT_ENABLED, sizeof(uint8_t), &initialAdvertEnable);
GAPRole_SetParameter(GAPROLE_ADVERT_OFF_TIME, sizeof(uint16_t),&advertOffTime);
GAPRole_SetParameter(GAPROLE_SCAN_RSP_DATA, sizeof(scanRspData), scanRspData);
GAPRole_SetParameter(GAPROLE_ADVERT_DATA, sizeof(advertData), advertData);
GAPRole_SetParameter(GAPROLE_PARAM_UPDATE_ENABLE, sizeof(uint8_t), &enableUpdateRequest);
GAPRole_SetParameter(GAPROLE_MIN_CONN_INTERVAL, sizeof(uint16_t), &desiredMinInterval);
GAPRole_SetParameter(GAPROLE_MAX_CONN_INTERVAL, sizeof(uint16_t), &desiredMaxInterval);
GAPRole_SetParameter(GAPROLE_SLAVE_LATENCY, sizeof(uint16_t), &desiredSlaveLatency);
GAPRole_SetParameter(GAPROLE_TIMEOUT_MULTIPLIER, sizeof(uint16_t), &desiredConnTimeout);
// Set GAP Parameters to set the advertising interval
// For more information, see the GAP section of the User's Guide:
// http://software-dl.ti.com/lprf/sdg-latest/html
{
// Use the same interval for general and limited advertising.
// Note that only general advertising will occur based on the above configuration
uint16_t advInt = DEFAULT_ADVERTISING_INTERVAL;
GAP_SetParamValue(TGAP_LIM_DISC_ADV_INT_MIN, advInt);
GAP_SetParamValue(TGAP_LIM_DISC_ADV_INT_MAX, advInt);
GAP_SetParamValue(TGAP_GEN_DISC_ADV_INT_MIN, advInt);
GAP_SetParamValue(TGAP_GEN_DISC_ADV_INT_MAX, advInt);
}
---------------------------------------------------------------------------------------------------------------------------gap.h
/**
* @brief Minimum time to remain advertising, when in general discoverable mode (ms)
*
* Setting this parameter to 0 turns off the timeout, thus allowing infinite advertising
*
* default: 0
*
* range: 0-65535
*/
#define TGAP_GEN_DISC_ADV_MIN 0
/**
* @brief Time to remain advertising in limited discovery mode (sec)
*
* default: 180
*
* range: 1-65535
*/
#define TGAP_LIM_ADV_TIMEOUT 1
/**
* @brief Time to perform scanning for general discovery (ms)
*
* default: 10240
*
* range: 1-65535
*/
#define TGAP_GEN_DISC_SCAN 2
/**
* @brief Time to perform scanning for limited discovery (ms)
*
* default: 10240
*
* range: 1-65535
*/
#define TGAP_LIM_DISC_SCAN 3
/**
* @brief Advertising timeout when performing connection establishment (ms)
*
* default: 10240
*
* range: 1-65535
*/
#define TGAP_CONN_EST_ADV_TIMEOUT 4
/**
* @brief Timeout for link layer to wait to receive connection parameter
* update response before giving up (ms)
*
* default: 30000
*
* range: 1-65535
*/
#define TGAP_CONN_PARAM_TIMEOUT 5
/**
* @brief Minimum advertising interval in limited discovery mode (n × 0.625 ms)
*
* default: 160
*
* range: 32-16384
*/
#define TGAP_LIM_DISC_ADV_INT_MIN 6
/**
* @brief Maximum advertising interval in limited discovery mode (n × 0.625 ms)
*
* default: 160
*
* range: 32-16384
*/
#define TGAP_LIM_DISC_ADV_INT_MAX 7
/**
* @brief Minimum advertising interval in general discovery mode (n × 0.625 ms)
*
* default: 160
*
* range: 32-16384
*/
#define TGAP_GEN_DISC_ADV_INT_MIN 8
/**
* @brief Maximum advertising interval in general discovery mode (n × 0.625 ms)
*
* default: 160
*
* range: 32-16384
*/
#define TGAP_GEN_DISC_ADV_INT_MAX 9
/**
* @brief Minimum advertising interval, when in Connectable mode (n * 0.625 mSec)
*
* default: 2048
*
* range: 32-16384
*/
#define TGAP_CONN_ADV_INT_MIN 10
/**
* @brief Maximum advertising interval, when in Connectable mode (n * 0.625 mSec)
*
* default: 2048
*
* range: 32-16384
*/
#define TGAP_CONN_ADV_INT_MAX 11
/**
* @brief Scan interval used during connection establishment (n * 0.625 mSec)
*
* default: 480
*
* range: 4-16384
*/
#define TGAP_CONN_SCAN_INT 12
/**
* @brief Scan window used during connection establishment (n * 0.625 mSec)
*
* default: 240
*
* range: 4-16384
*/
#define TGAP_CONN_SCAN_WIND 13
/**
* @brief Scan interval used during connection establishment, high duty scan cycle scan parameters (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_CONN_HIGH_SCAN_INT 14
/**
* @brief Scan window used during connection establishment, high duty scan cycle scan parameters (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_CONN_HIGH_SCAN_WIND 15
/**
* @brief Scan interval used when in General Discovery proc (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_GEN_DISC_SCAN_INT 16
/**
* @brief Scan window used when in General Discovery proc (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_GEN_DISC_SCAN_WIND 17
/**
* @brief Scan interval used when in Limited Discovery proc (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_LIM_DISC_SCAN_INT 18
/**
* @brief Scan window used when in Limited Discovery proc (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_LIM_DISC_SCAN_WIND 19
/// @cond NODOC
/**
* @brief Advertising interval, when using Connection Establishment proc (n * 0.625 mSec)
*
* Obsolete - Do not use.
*/
#define TGAP_CONN_EST_ADV 20
/// @endcond // NODOC
/**
* @brief Minimum connection interval for connection establishment (n * 1.25 mSec)
*
* default: 80
*
* range: 6-3200
*/
#define TGAP_CONN_EST_INT_MIN 21
/**
* @brief Maximum connection interval for connection establishment (n * 1.25 mSec)
*
* default: 80
*
* range: 6-3200
*/
#define TGAP_CONN_EST_INT_MAX 22
/**
* @brief Scan interval used during during connection establishment (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_CONN_EST_SCAN_INT 23
/**
* @brief Scan window used during during connection establishment (n * 0.625 mSec)
*
* default: 16
*
* range: 4-16384
*/
#define TGAP_CONN_EST_SCAN_WIND 24
/**
* @brief Connection supervision timeout for connection establishment (n * 10 mSec)
*
* default: 2000
*
* range: 10-3200
*/
#define TGAP_CONN_EST_SUPERV_TIMEOUT 25
/**
* @brief Slave latency for connection establishment (in number of connection events)
*
* default: 0
*
* range: 0-499
*/
#define TGAP_CONN_EST_LATENCY 26
/**
* @brief Local informational parameter about min len of connection needed, when using Connection Establishment proc (n * 0.625 mSec)
*
* default: 0
*
* range: < @ref TGAP_CONN_EST_MAX_CE_LEN
*/
#define TGAP_CONN_EST_MIN_CE_LEN 27
/**
* @brief Local informational parameter about max len of connection needed, when using Connection Establishment proc (n * 0.625 mSec)
*
* default: 0
*
* range: > @ref TGAP_CONN_EST_MIN_CE_LEN
*/
#define TGAP_CONN_EST_MAX_CE_LEN 28
/**
* @brief Minimum Time Interval between private (resolvable) address changes (minutes)
*
* default: 15
*
* range: 1-65535
*/
#define TGAP_PRIVATE_ADDR_INT 29
/**
* @brief Central idle timer (seconds)
*
* default: 1
*
* range: 1-65535
*/
#define TGAP_CONN_PAUSE_CENTRAL 30
/**
* @brief Minimum time upon connection establishment before the peripheral starts a connection update procedure (seconds)
*
* default: 5
*
* range: 1-65535
*/
#define TGAP_CONN_PAUSE_PERIPHERAL 31
/**
* @brief Time to wait for security manager response before returning bleTimeout (ms)
*
* default: 30000
*
* range: 1-65535
*/
#define TGAP_SM_TIMEOUT 32
/**
* @brief SM Minimum Key Length supported
*
* default: 7
*
* range: 1-65535
*/
#define TGAP_SM_MIN_KEY_LEN 33
/**
* @brief SM Maximum Key Length supported
*
* default: 16
*
* range: 1-65535
*/
#define TGAP_SM_MAX_KEY_LEN 34
/**
* @brief Filter duplicate advertising reports
*
* default: TRUE
*
* range: 0-1
*/
#define TGAP_FILTER_ADV_REPORTS 35
/**
* @brief Minimum RSSI required for scan responses to be reported to the app (dBm)
*
* default: -127
*
* range: -965535 - 0
*/
#define TGAP_SCAN_RSP_RSSI_MIN 36
/**
* @brief Whether or not to reject Connection Parameter Update Request received on Central device
*
* default: FALSE
*
* range: 0-1
*/
#define TGAP_REJECT_CONN_PARAMS 37