Experimental Eddystone from SDK 11

RE: Experimental Eddystone from SDK 11

Vidar Berg — Tue, 23 Apr 2019 11:32:51 GMT

You can replace memcpy with a routine that copies the data in reverse order. E.g., https://www.tutorialspoint.com/learn_c_by_examples/reverse_array_copy_in_c.htm

RE: Experimental Eddystone from SDK 11

Ravin — Tue, 23 Apr 2019 11:27:06 GMT

Vidar Berg Please help with the quoted issue

[quote userid="76890" url="~/f/nordic-q-a/44797/experimental-eddystone-from-sdk-11/182979"]I tried this it , I has reserved the entire data. How to get it the right way?[/quote]

RE: Experimental Eddystone from SDK 11

Ravin — Tue, 23 Apr 2019 06:14:54 GMT

[quote userid="4240" url="~/f/nordic-q-a/44797/experimental-eddystone-from-sdk-11/179154"]ble_gap_addr_t addr;

err_code = sd_ble_gap_address_get(&addr);
APP_ERROR_CHECK(err_code);

/*Offset of APP_EDDYSTONE_UID_ID = APP_EDDYSTONE_UID_FRAME_TYPE+APP_EDDYSTONE_RSSI+APP_EDDYSTONE_UID_NAMESPACE*/
memcpy(&eddystone_uid_data[12], addr.addr, sizeof(addr.addr));[/quote]

I tried this it , I has reserved the entire data. How to get it the right way?

RE: Experimental Eddystone from SDK 11

Vidar Berg — Tue, 16 Apr 2019 08:14:47 GMT

No problem. All SDK examples are configured to use the optional 32KHz crystal as the low-frequency clock source. You should make the following changes to main.c to use the internal RC oscillator if your board doesn't have a LF crystal:

diff --git a/examples/ble_peripheral/ble_app_eddystone/main.c b/examples/ble_peripheral/ble_app_eddystone/main.c
index 07e7355..c639921 100644
--- a/examples/ble_peripheral/ble_app_eddystone/main.c
+++ b/examples/ble_peripheral/ble_app_eddystone/main.c
@@ -203,10 +203,10 @@ static void ble_stack_init(void)
     ret_code_t         err_code;
     nrf_clock_lf_cfg_t lf_clock_config;
 
-    lf_clock_config.source        = NRF_CLOCK_LF_SRC_XTAL;
-    lf_clock_config.rc_ctiv       = 0;
-    lf_clock_config.rc_temp_ctiv  = 0;
-    lf_clock_config.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM;
+    lf_clock_config.source        = NRF_CLOCK_LF_SRC_RC;
+    lf_clock_config.rc_ctiv       = 8;
+    lf_clock_config.rc_temp_ctiv  = 1;
+    lf_clock_config.xtal_accuracy = 0; 
 
     // Initialize the SoftDevice handler module.
     SOFTDEVICE_HANDLER_INIT(&lf_clock_config, NULL);

RE: Experimental Eddystone from SDK 11

Ravin — Tue, 16 Apr 2019 07:40:48 GMT

Sir, Sorry for the delayed reply. But I am not able to run the SDK 12.3.0 examples on this board when I contacted the vendor, I got this response -

"It seems that your firmware need to use crystal oscillators as Nordic's official routine use it, but our F3 with 51822 nordic chip si without crystal oscillators.

So now our engineer guess that is the reason firmware fail to work when load to F3 devices."

Can you suggest any solutions please?

RE: Experimental Eddystone from SDK 11

Vidar Berg — Fri, 29 Mar 2019 09:09:02 GMT

Hi,

it looks like you are writing one byte of your pointer value to APP_EDDYSTONE_UID_NAMESPACE.

Try to replace this code:

ble_gap_addr_t *p_mac1;
sd_ble_gap_address_get(p_mac1);
eddystone_uid_data[3] = (uint8_t) p_mac1;

With this:

ble_gap_addr_t addr;

err_code = sd_ble_gap_address_get(&addr);
APP_ERROR_CHECK(err_code);

/*Offset of APP_EDDYSTONE_UID_ID = APP_EDDYSTONE_UID_FRAME_TYPE+APP_EDDYSTONE_RSSI+APP_EDDYSTONE_UID_NAMESPACE*/
memcpy(&eddystone_uid_data[12], addr.addr, sizeof(addr.addr));

Edit: you should use SDK 12.3.0. The eddistone example was in an experimental state in SDK 11.

RE: Experimental Eddystone from SDK 11

Ravin — Fri, 29 Mar 2019 07:06:18 GMT

static void advertising_init(void)
{
uint32_t err_code;
ble_advdata_t advdata;
uint8_t flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
ble_uuid_t adv_uuids[] = {{APP_EDDYSTONE_UUID, BLE_UUID_TYPE_BLE}};

ble_gap_addr_t *p_mac1;
sd_ble_gap_address_get(p_mac1);
eddystone_uid_data[3] = (uint8_t) p_mac1;

uint8_array_t eddystone_data_array; // Array for Service Data structure.
/** @snippet [Eddystone data array] */
eddystone_data_array.p_data = (uint8_t *) eddystone_uid_data; // Pointer to the data to advertise.
eddystone_data_array.size = sizeof(eddystone_uid_data); // Size of the data to advertise.
/** @snippet [Eddystone data array] */

ble_advdata_service_data_t service_data; // Structure to hold Service Data.
service_data.service_uuid = APP_EDDYSTONE_UUID; // Eddystone UUID to allow discoverability on iOS devices.
service_data.data = eddystone_data_array; // Array for service advertisement data.

// Build and set advertising data.
memset(&advdata, 0, sizeof(advdata));

advdata.name_type = BLE_ADVDATA_NO_NAME;
advdata.flags = flags;
advdata.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]);
advdata.uuids_complete.p_uuids = adv_uuids;
advdata.p_service_data_array = &service_data; // Pointer to Service Data structure.
advdata.service_data_count = 1;

err_code = ble_advdata_set(&advdata, NULL);
APP_ERROR_CHECK(err_code);

// Initialize advertising parameters (used when starting advertising).
memset(&m_adv_params, 0, sizeof(m_adv_params));

m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_NONCONN_IND;
m_adv_params.p_peer_addr = NULL; // Undirected advertisement.
m_adv_params.fp = BLE_GAP_ADV_FP_ANY;
m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL;
m_adv_params.timeout = APP_CFG_NON_CONN_ADV_TIMEOUT;
}

This is where i used the function call but there was no change in the advertising data.

[quote userid="4240" url="~/f/nordic-q-a/44797/experimental-eddystone-from-sdk-11/177417"]sd_ble_gap_address_get()[/quote]

RE: Experimental Eddystone from SDK 11

Ravin — Fri, 29 Mar 2019 05:12:14 GMT

Please help me out on where can i use this statement ?

Can i use it along with the define statements in the main.c in the definition of instance id? If i am using this statement is there any other parameters i need to consider. I am new to the nordic development environment, thank you.

RE: Experimental Eddystone from SDK 11

Vidar Berg — Wed, 20 Mar 2019 15:39:28 GMT

Hi,

The experimental Eddystone example in SDK 11 does not support multiple frames, but you can upgrade to SDK 12.3.0 which support up to 5 frames (Eddystone Beacon Application).

[quote user=""]Also is there any system call that can be used to load the instance id with the mac id in the main.c code itself. [/quote]

Yes, you can use sd_ble_gap_address_get() for this.

RE: Experimental Eddystone from SDK 11

Ravin — Wed, 13 Mar 2019 10:07:38 GMT

This is the schematic of the custom board for better understanding of the scenario.