programatically change advertising rate

亲爱的莫特瑞德，

你说得对，如果你需要改变广告时间间隔，应用程序c中的第209行和第210行都必须改变。
所以你提到的功能很好。
Note that current_app_adv_int_min & current_app_adv_int_max must be the same.

致以最诚挚的问候，

纪尧姆。

#定义APP\u ADV\u INT\u MIN 1100
#定义APP\u ADV\u INT \u MAX 1100
1100 means ?? unit??

Hi JE_Dialog

你确定吗？因为是广告间隔所以1100*（1/100）=11秒？？还是1100*0.625=687.s毫秒？因为在检查电源配置时，两个广告事件之间的时间约为680毫秒！！

你好，hrg，是的，你是对的：我错看了我们的信标软件，我们有一个不同的计算。

Line 81 and 83 in main.c apply a multiper of 0.625 so the 680mS is the correct value.

#定义APP\u ADV\u INT \u MIN 0x20//*0.625ms（+伪随机advDelay从0到10ms）

BR JE\u对话框

你好，

只是补充一下。你将不得不停止，然后重新开始广告，以真正改变间隔。

嗨，杰，

在#8中，您提到（BLE）堆栈将在APPŠADVŠu INTŠMAX上方添加随机数（0~10ms），而在我们的测试中，我们没有看到此随机添加到间隔：
-当我们同时启动3个DA模块（使用相同的固件）时，我们很难扫描所有3个模块（有时我们只能扫描1个，有时2个）。
-如果我们一个接一个地打开3个DA模块，我们每次都可以扫描所有3个模块。
- if we burn firmware with different APP_ADV_INT_MAX value to each module, and power up the 3 modules simutaneously, we also can scan all 3 modules everytime.

Pls help to check and advise..

谢谢。
亚历克斯

Hi alex,

According to the bluetooth spec the advertising events occurs at regular intervals which are slightly modified with a random delay to aid in interference avoidance. Even without this mechanism, over time the different advertising intervals should drift and stop overlapping eachother (no matter how simutaneously your advertising starts for how long the other devices aren't discoverable by your scanner). Do you use different bd-addresses ? What is your software version ?

谢谢你的对话

Thank you MT..

Do you use different bd-addresses ?
-是的，我们每个模块有不同的BDA。
What is your software version ?
-基于SDK304开发的固件。

亚历克斯。

Hi alex,

请您尝试定义CFG\u TRNG配置，并再次检查广告事件是否重叠？

谢谢你的对话。

嗨对话框
我们的问题与#11相同，我们使用的是SDK 5.0.2.1

信息：
We are using "app_easy_gap_non_connectable_advertise_start_create_msg" which sets up cmd->intv_max and cmd->intv_min identically
cmd->intv\u max=user\u non\u connectable\u播发_配置intv;
cmd->intv_min = user_non_connectable_advertise_conf.intv;

True Random number Generator is enabled in "da1458x_config_advanced.h"
#定义CFG\u TRNG

希望你有一个解决方案，因为这是一个真正的问题的应用程序。

Best Regards,
西亚诺霜
Denmark

Hi ciano,

请确保the image that is downloaded in the 580 has the CFG_TRNG defined, i tested your scenario with the SDK 5.0.2.1 in a modified template example advertising in non-connectable mode (different advertising strings, different bd_addresses and same advertising intervals ) and by connecting the two reset pins i issue a reset at the two boards at the same time. I can properly see the boards with a sniffer and with a normal android BLE app. The only way i could get one device and corrupted advertising data is when the CFG_TRNG is undefined. Please check the sniffer attachments when TRNG is defined and when its not.

谢谢你的对话

Hi ciano,

So you are advertising 1 advertising packet every 1 second and this is defined by an elapsed timer that issues an advertise start. That explains what you are experincing, the first advertising message hasn't a delay applied to it. After the app_adv_start is issued the advertising string is transmited in the same time as the other DUT after that the next advertising event is re-scheduled with a random delay, so in the first message you send there is a collision between the two advertising messages. A work around of what you are experiencing is to decrease the advertising interval so that the second advertising string is transmitted within the 1 second interval and the random delay to insert the advertising interval so that the two advertising string doesnt collide.

你可以数一数你已经发出的广告字符串，并在第二个发出的广告字符串中停止广告（这将被正确接收），你可以捕捉广告的完成情况并启动计时器，当计时器结束时，再次开始广告。

Here is a small snippet on how you can count your advertising events:

枚举arch\u main\u loop\u callback\u ret count\u adv\u events（void）
{
uint8_t temp_last_ble_event;
temp_last_ble_event=arch_last_rwble_evt_get（）；
if (app_last_ble_event != temp_last_ble_event)
{
app\u last\u ble\u event=临时\u last\u ble\u事件；
if（app\u last\u ble\u event==ble\u EVT\u END）
adv_count++;
if (adv_count == 2)
{
adv\ U计数=0；
app_easy_gap_advertise_stop（）；
}
}
回到睡眠状态；
}

谢谢你的对话

Hi ciano,

广告操作中插入的延迟根据BLE规范位于ROM代码中，您不能更改它。

谢谢你的对话