STM32WB55 - aci_gatt_update_char_value() - Not Showing updated characters in Serial Bluetooth Term

[ICMosquera]

Hi Sirs, 

I've fiddled around Cable Replacement Example code (CRS for server). I successfully created a custom function to send a char string to the peripheral upon pushing SW1. Now my problem is when I made a new project, with  an .oic file, created a custom service with read and write characteristics (write specifically my concern), then ported my custom function.

When I debug my code, I was able to call the event by pressing the SW1, up to the code aci_gatt_update_char_value(), but nothing is showing on the terminal. Im sure this works on the Cable replacement code. I even copied the UUIDs of the service and characteristics of Cable replacement. but to no avail.

 

Here is the initialization of my write service

 

 

/**
 * CharW01
 */
 COPY_CHARW01_UUID(uuid.Char_UUID_128);
 ret = aci_gatt_add_char(CustomContext.CustomMysvcHdle,
 UUID_TYPE_128, &uuid,
 SizeCharw01,
 CHAR_PROP_READ | CHAR_PROP_WRITE_WITHOUT_RESP,
 ATTR_PERMISSION_NONE,
 GATT_NOTIFY_ATTRIBUTE_WRITE,
 0x10,
 CHAR_VALUE_LEN_VARIABLE,
 &(CustomContext.CustomCharw01Hdle));

 

 

Here is the code for updating the characteristic (CHARW01)

 

 

 

tBleStatus Custom_STM_App_Update_Char(Custom_STM_Char_Opcode_t CharOpcode, uint8_t *pPayload)
{
 tBleStatus ret = BLE_STATUS_INVALID_PARAMS;
 uint8_t size;
 size = 0;
 while(pPayload[size] != '\0'){
 size++;
 }
 switch (CharOpcode)
 {
 case CUSTOM_STM_CHARW01:
 ret = aci_gatt_update_char_value(CustomContext.CustomMysvcHdle,
 CustomContext.CustomCharw01Hdle,
 0, /* charValOffset */
 size, /* charValueLen */
 (uint8_t *) pPayload);
 break;
 case CUSTOM_STM_CHARN02:
 ret = aci_gatt_update_char_value(CustomContext.CustomMysvcHdle,
 CustomContext.CustomCharn02Hdle,
 0, /* charValOffset */
 SizeCharn02, /* charValueLen */
 (uint8_t *) pPayload);
 break;
 default:
 break;
 }
 return ret;
}

 

 

 

When I use this code under cable replacement and then download it on nucleo device, I am able to send strings, but not on my project.

Have I missed something in porting this code on my new project? Im not quite sure if I need to follow some GATT coding in order for me to correctly replicate the cable replacement.

 

Thank you so much. 

 

Ian