LP-EM-CC2340R5: how to update character value from another task

Hi,

Based on your description I am assuming you are calling SimpleGattProfile_setParameter from a non-BLE task. You can use the BLEAppUtil_invokeFunctionNoData and BLEAppUtil_invokeFunction functions to switch the context to the BLE App Util task context. Please take a look at the following snippet:

void myHandler(void *pData)
{
    // ... insert your code here
    SimpleGattProfile_setParameter( SIMPLEGATTPROFILE_CHAR4, sizeof(uint8_t), &charValue4 );
}

void *myTask(void *arg0)
{
    // ...
    char *data = BLEAppUtil_malloc(sizeof(char));
    BLEAppUtil_invokeFunction(myHandler, data);
}

It's also possible to create additional ICall enabled tasks as described in the User's Guide (Tasks — SimpleLink CC23xx SDK BLE5-Stack User's Guide 3.02.04.00 documentation) but I do not recommend it from what I understand of your use case.