Updating variable in custom service characteristic

RE: Updating variable in custom service characteristic

Amigo — Thu, 29 Jun 2017 17:53:47 GMT

Yes it works!!! I forgot that i redifined struct in main.c. Thanks a lot!!!!

RE: Updating variable in custom service characteristic

Jørgen Holmefjord — Thu, 29 Jun 2017 14:11:33 GMT

Hi,

It seems that the issue is that you initialize the profile using the struct ble_myprofile_t m_myprofile;, defined in service_if.c. This is where the correct characteristics handles are stored. When you try to update the value, you define a new struct in main.c, ble_myprofile_t m_ble_myprofile;. This struct will not contain correct handles.

To solve the issue, remove the definition of the struct from service_if.c, and add it in ble_myprofile.h:

extern ble_myprofile_t    m_myprofile;

and in main.c:

ble_myprofile_t    m_myprofile;

Now you should be able to update the value in get_data_handler() using:

ble_myprofile_mycharacteristic_set(&m_myprofile, &m_mycharacteristic);

Best regards,

Jørgen

RE: Updating variable in custom service characteristic

Amigo — Wed, 28 Jun 2017 15:57:36 GMT

Now i tried to set value in timer handler:

static void get_data_handler(void * p_context)
{
	UNUSED_PARAMETER(p_context);
	uint32_t err_code;
	val++;		

	nrf_gpio_pin_toggle(LED4);
	
	ble_myprofile_mycharacteristic_t m_mycharacteristic;
	m_mycharacteristic.value = val;
	
	ble_myprofile_mycharacteristic_set(&m_ble_myprofile, &m_mycharacteristic);
	ble_myprofile_mycharacteristic_indicate(&m_ble_myprofile, &m_mycharacteristic);
	//err_code = ble_my_service_value_update(&m_ble_myprofile, val);
}

It has no effect.

there is a function prototype ble_myprofile_mycharacteristic_send but there is no code for it.... is it correct?

RE: Updating variable in custom service characteristic

Jørgen Holmefjord — Wed, 28 Jun 2017 15:02:29 GMT

Are you not able to set the characteristics value using ble_myprofile_mycharacteristic_set()?

RE: Updating variable in custom service characteristic

Amigo — Tue, 27 Jun 2017 13:15:33 GMT

I have edited my post by uploading BDS output files... hoping for help)

RE: Updating variable in custom service characteristic

Jørgen Holmefjord — Tue, 27 Jun 2017 12:44:55 GMT

Can you upload ble_myprofile.c / ble_myprofile.h? These files are not included in the project you uploaded.