Hi Team,
Regarding the migration of the host program from the CC2642 Bluetooth module to the CC2340,
when the gap_ADTYPE_local_name_complete is obtained,
sometimes the advertisement data is received and sometimes the advertisement response data is received.
Both cannot be received at the same time, causing the Bluetooth name of the slave to not be correctly obtained, as shown in the figure.
Best Regards,
Galaxy
Hi David，
1.SDK： simplelink_lowpower_f3_sdk_7_20_00_29
2.Yes,basic_ble for instance.
3.The location where I read the pAdvReport is void Central_ScanEventHandler(uint32 event, BLEAppUtil_msgHDr_t *pMsgData) -> case BLEAPPUTIL_ADV_report:
to see the code attached below me.
static bool Get_Adtype_Data( uint8 adType, uint8 *pData, uint8 dataLen, uint16 *adTypeData_index, uint16 *adTypeData_len)
{
(void)adTypeData_index; //防止编译报错
(void)adTypeData_len; //防止编译报错
uint8 adLen; //对应数据段的长度
uint8 *pCurrent; //当前位置的指针
uint8 *pEnd; //尾指针
int i;
if(pData == NULL)
{
my_dbg_printf("find null pointer\r\n",19);
return false;
}
for(i=0; i<dataLen; i++)
{
sprintf(printbuf,"%02x ",pData[i]);PRINT_LOG;
}
my_dbg_printf("\r\n",2);
pEnd = pData + dataLen - 1; //指向包尾
pCurrent = pData; //当前指针指向包头
while ( pCurrent < pEnd ) //判断当前指针是否还未到包尾
{
adLen = *pCurrent++; //获取本段数据段的长度
if ( adLen > 0 )
{
if ( adType == *pCurrent ) //如果找到了adType
{
*adTypeData_index = (pCurrent + 1) - pData; //数据段在数据包中的偏移值
*adTypeData_len = adLen - 1; //数据段长度
return TRUE; //返回TRUE
}
else //没找到adType则指向下一个数据段
{
pCurrent += adLen;
}
}
}
my_dbg_printf("FALSE\r\n",7);
return FALSE; //本数据串中没有找到adType
}
void Central_ScanEventHandler(uint32 event, BLEAppUtil_msgHdr_t *pMsgData)
{
BLEAppUtil_ScanEventData_t *scanMsg = (BLEAppUtil_ScanEventData_t *)pMsgData;
case BLEAPPUTIL_ADV_REPORT:
{
bleStk_GapScan_Evt_AdvRpt_t *pScanRpt = &scanMsg->pBuf->pAdvReport;
if (pScanRpt->pData != NULL)
{
uint8_t indx = 0;
for (; indx < pScanRpt->dataLen; indx++)
{
//sprintf(printbuf,"pScanRpt->pData=%d\r\n",pScanRpt->pData[indx]);PRINT_LOG;
MenuModule_printf(APP_MENU_SCAN_EVENT + indx, 0, "Data: %d", pScanRpt->pData[indx]);
}
}
#if !Change
uint8 size = Scan_getScanResList(&menuScanRes);
uint8 scannum[2];
scannum[1] = size%10 + 0x30;
scannum[0] = size/10 + 0x30;
bleStk_GapScan_Evt_AdvRpt_t* pAdvRpt = &scanMsg->pBuf->pAdvReport;
uint16 adTypeData_index = 0;
uint16 adTypeData_len = 0;
bool status = FALSE;
uint8 deviceInfo[40] = {0x00};
sprintf(printbuf,"evtType=%d\r\n",pAdvRpt->evtType);PRINT_LOG;
status = Get_Adtype_Data( GAP_ADTYPE_LOCAL_NAME_COMPLETE,
pAdvRpt->pData,
pAdvRpt->dataLen,
&adTypeData_index,
&adTypeData_len);
if(status == TRUE)
{
memset(deviceInfo, 0, sizeof(deviceInfo));
memcpy(deviceInfo,pAdvRpt->pData + adTypeData_index,adTypeData_len);
//status = addScanInfo(pAdvRpt->addr,pAdvRpt->addrType);
status = Central_addScanRes(&pAdvRpt);
if(status == TRUE)
{
SerialSendSimple(deviceInfo,strlen(deviceInfo));
SerialSendSimple("\r\n",2);
}
my_dbg_printf("--------------------\r\n",22);
}
my_dbg_printf("==========\r\n",12);
// Free report payload data 释放报告有效负载数据
// if (pAdvRpt->pData != NULL)
// {
// ICall_free(pAdvRpt->pData);
// }
#endif
break;
}
}
4.Yes, the peripheral I use has full local names in both the scan response and the advertisement data.
uint8_t advertData[] = {
0x02, // length of this data
GAP_ADTYPE_FLAGS,
GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED | GAP_ADTYPE_FLAGS_GENERAL,
// service UUID, to notify central devices what services are included
// in this peripheral
0x03,// length of this data
GAP_ADTYPE_16BIT_MORE, // some of the UUID's, but not all
LO_UINT16(0xffe5), HI_UINT16(0xffe5),
0x11,
GAP_ADTYPE_MANUFACTURER_SPECIFIC,
0x00,0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
uint8_t scanRspData[] =
{
// complete name
0x11,// length of this data
GAP_ADTYPE_LOCAL_NAME_COMPLETE,
'T', 'v', '4', '1', '0', 'u', '-', '0', '0', '0', '0', '0', '0', '0', '0', '\0',
// connection interval range
0x05, // length of this data
GAP_ADTYPE_PERIPHERAL_CONN_INTERVAL_RANGE,
LO_UINT16(DEFAULT_DESIRED_MIN_CONN_INTERVAL), // 100ms
HI_UINT16(DEFAULT_DESIRED_MIN_CONN_INTERVAL),
LO_UINT16(DEFAULT_DESIRED_MAX_CONN_INTERVAL), // 1s
HI_UINT16(DEFAULT_DESIRED_MAX_CONN_INTERVAL),
// Tx power level
0x02, // length of this data
GAP_ADTYPE_POWER_LEVEL,
0 // 0dBm
};
Best Regards,
Galaxy
Hello Galaxy,
At the moment it seems that the the peripheral is only sending the local name as part of the scan response, that would explain the missing device information at your serial data screenshot. Please enable the Complete Local Name as part of the Advertisement data as seen below:
Please let me know how it goes.
BR,
David.
Hello Galaxy,
I would suggest comparing both project functionalities: simple_central vs basic_ble. I am also doing that on my side.
Could you please share how you are printing the scanned report values using the simple_central project?
It could be the case that the device running basic_ble is receiving duplicate adv reports, considering that the duplicate filter is disabled.
Best Regards,
David.
Hi David，
When the host communicates with the slave, when the master sends a string longer than 20 bytes to the slave, the packets are separated when the slave receives it, that is, 20 bytes and 20 bytes are received. But when the slave sends it to the host, it is a complete package when the host prints it out. Both modules are CC2340. The data is as shown below: the master module on the left and the slave module on the right.
And the PDU size set in syscfg is 247 bytes, as shown in the figure：
Best Regards,
Galaxy
Hello Galaxy,
Are you using basic_ble project for this? Could you please share more details about the program running on both devices?
We also have a UART_over_ble example that could be useful to take a look at.
What is the RX ring buffer size?
Best Regards,
David.