CC2640 - 送GATT notification msg 2字元會error

kuo austin

Intellectual 510 points

Other Parts Discussed in Thread: CC2640

您好

我想cc2640走BT透過SimpleProfile_SetParameter()送data到pc tool讀取，

但我發現當送2個字元時會失敗，而其它長度的值都成功，以下測試說明：

SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, 1, "a"); // pc端能正常讀到"a"

SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, 2, "ab"); // pc端讀不到

SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, 3, "abc"); // pc端正常讀到"abc"

SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, 4, "abcd"); // pc端正常讀到"abcd"

一路往下追：

--> GATTServApp_ProcessCharCfg() //simpleProfileChar6 have data "ab"

--> gattServApp_SendNotiInd() //pAttr->pValue have data "ab"

--> GATT_Notification() //&noti, noti.pValue have data "ab"

--> gattIndNoti() //msg->pIndNoti->handleValueNoti.pValue = "ab"

--> sendWaitMatchCS()// 無法往下追了

是否有idea??

9 年多前

0 Yue TANG 9 年多前

TI__Mastermind 39047 points

SIMPLEPROFILE_CHAR6 你自己加的吧？他的value指向的是一个数组吗？

0 kuo austin 9 年多前回复 Yue TANG

Intellectual 510 points

您好

是的，simpleProfileChar6[20] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

SIMPLEPROFILE_CHAR6_LEN = 20;

SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, 2, "ab");會跑以下case

static gattCharCfg_t *simpleProfileChar6Config;

bStatus_t SimpleProfile_SetParameter( uint8 param, uint8 len, void *value )

{

case SIMPLEPROFILE_CHAR6:
if ( len <= SIMPLEPROFILE_CHAR6_LEN ) //len = 上面function帶的2
{
notiChar6Len = len;
VOID memcpy( simpleProfileChar6, value, len );

// See if Notification has been enabled
GATTServApp_ProcessCharCfg( simpleProfileChar6Config, simpleProfileChar6, FALSE,
simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ),
INVALID_TASK_ID, simpleProfile_ReadAttrCB );
}

}

搞不懂為何只有兩字元會失敗，也比較過送1字元/兩字元/三字元皆有送下去gattIndNoti()

Bluetooth

蓝牙论坛

CC2640 - 送GATT notification msg 2字元會error