论坛: href = " /论坛/ dialog-smartbond-bluetooth-low-energy - % E2 % 80% 93 -软件-对话框- 9 csmartbond % E2 % % E2 % 80% 80% 9 d % E7%B3%BB % E5 % 88% 97% e4%bd % 8 8 e % E5 % % E8 % 9 f % E8 % 80% 97% 93% 9 E2 % d % E7 % 89% 99% 80% 94% e8%bd % AF % E4%BB % B6”“=“sioc:容器sioc:论坛”属性=“rdfs: label skos: prefLabel”数据类型= " " >对话框Smartbond蓝牙低能量-软件/ /对话框“Smartbond”系列低功耗蓝牙——软件< / > < / div > < / div > < / div > < div class =”字段field-name-body field-type-text-with-summary field-label-hidden”> < div class = "字段条目" > < div class =”field-item甚至“财产=“内容:编码”> < p >请问DA14580每次最多可以传输多少个字节吗?我指的是一次性传输，不是多次分包。< br / >现在在做一个项目,需要一次性传输约300个字节。< br / >目前尝试修改MTU,发现最多只能改到103年左右,如果再增大的话,每次一连接就会断开。用的调试应用是IOS下面的LightBlue。< br / >修改的MTU的位置:< br / > user_config.h里面的< br /> //--------------------- GAPM——相关 ---------------------------------- < p >静态常量struct gapm_configuration user_gapm_conf = {< br / > .role = GAP_PERIPHERAL_SLV < br / > .irk = {0 x00 0 x00 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00, 0 x00}, < br / > / / /设备外观(0 x0000 -未知外观)< br / > / /填写根据< a href = " https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.gap.appearance.xml " > https://developer.bluetooth.org/gatt/characteristics/Pages/Characteristi..。< / > < br / > .appearance = 0, < br / > .appearance_write_perm = GAPM_WRITE_DISABLE < br / >.name_write_perm = GAPM_WRITE_DISABLE，
///最大MTU
.max_mtu = 103，//23
///外围设备:*****************************************************************< br / > / / /奴隶喜欢最小的连接时间间隔测量ble双槽(1.25 ms) < br / > / / /使用宏MS_TO_DOUBLESLOTS从毫秒(ms)转换为双槽< br / > .con_intv_min = MS_TO_DOUBLESLOTS (10), < br / > / / /奴隶首选最多连接
//使用宏MS_TO_DOUBLESLOTS从毫秒(ms)转换为双槽
.con_intv_max = MS_TO_DOUBLESLOTS(20)，
/// Slave首选连接延迟。 It is measured in connection events skipped
.con_latency = 0,
/// Slave preferred Link supervision timeout measured in timer units (10 ms)
/// use the macro MS_TO_TIMERUNITS to convert from milliseconds (ms) to timer units
.superv_to = MS_TO_TIMERUNITS(1000),

/// Privacy settings bit field (0b1 = enabled, 0b0 = disabled)
/// - [bit 0]: Privacy Support
/// - [bit 1]: Multiple Bond Support (Peripheral only); If enabled, privacy flag is
/// read only.
/// - [bit 2]: Reconnection address visible.
.flags = 0
};
这里的.max_mtu改为103，原来是23。

请问BLE4.1一次最多能传输多少字节？如何实现？谢谢。