Hello,
nRF5340, NCS2.0.2, vscode.
\v2.0.2\zephyr\samples\bluetooth\periodic_adv
when TX and RX work on PHY_1M, two side work well.
but when TX side set BT_LE_ADV_OPT_CODED and RX side set BT_LE_SCAN_OPT_CODED, RX side frequent data loss.
the frist data byte for Serial number (like 0 1 2 3 4....),
interval 100ms bt_le_per_adv_set_data(), RX side will loss some Serial number data.
how config it?
TX side demo code as follow,
RX code is default project periodic_sync (only set bt_le_scan_start()BT_LE_SCAN_OPT_CODED, and printk recv data)
#include <bluetooth/bluetooth.h>
#if defined (NRF5340_XXAA_APPLICATION)
#define CLOCK_FEATURE_HFCLK_DIVIDE_PRESENT
#include "nrfx_clock.h"
#endif
#include <devicetree.h>
#include <device.h>
#include <drivers/gpio.h>
#include <hal/nrf_gpio.h>
#include <hal/nrf_gpiote.h>
#include <nrfx_gpiote.h>
#include <sys/reboot.h>
void main(void)
{
uint8_t mfg_data[25] = {0, 'a','b','c','d','e','f','g'};
const struct bt_data ad[] = {
BT_DATA(BT_DATA_MANUFACTURER_DATA, mfg_data, sizeof(mfg_data)),
};
struct bt_le_ext_adv *adv=NULL;
#if defined (NRF5340_XXAA_APPLICATION)
nrfx_clock_divider_set(NRF_CLOCK_DOMAIN_HFCLK, NRF_CLOCK_HFCLK_DIV_1);//128MHz
#endif
#define BT_LE_EXT_ADV_NCONN_NAME_USER \
BT_LE_ADV_PARAM(BT_LE_ADV_OPT_EXT_ADV | BT_LE_ADV_OPT_CODED | \
BT_LE_ADV_OPT_USE_NAME, \
BT_GAP_ADV_FAST_INT_MIN_1, \
BT_GAP_ADV_FAST_INT_MAX_1, \
NULL)
// Create a non-connectable non-scannable unDIRECTED advertising set
int err = bt_le_ext_adv_create(BT_LE_EXT_ADV_NCONN_NAME_USER, NULL, &adv);
if (err) {
printk("Failed to create advertising set (err %d)\n", err);
return;
}
#define BT_LE_PER_ADV_P BT_LE_PER_ADV_PARAM(BT_GAP_PER_ADV_FAST_INT_MIN_1, \
BT_GAP_PER_ADV_FAST_INT_MIN_1, \
0)
// Set periodic advertising parameters
err = bt_le_per_adv_set_param(adv, BT_LE_PER_ADV_P);
if (err) {
printk("Failed to set advertising parameters (err %d)\n", err);
return;
}
// Enable Periodic Advertising
err = bt_le_per_adv_start(adv);
if (err) {
printk("Failed to enable advertising (err %d)\n", err);
return;
}
printk("Start Extended Advertising...");
err = bt_le_ext_adv_start(adv, BT_LE_EXT_ADV_START_DEFAULT);
if (err) {
printk("Failed to start extended advertising (err %d)\n", err);
return;
}
printk("done.\n");
while (true)
{
k_msleep(100);
mfg_data[0]++;// The first byte acts as a sequence number, increment it for every data update
err = bt_le_per_adv_set_data(adv, ad, ARRAY_SIZE(ad));
if (err) {
printk("Failed (err %d)\n", err);
break;
}
}
}
Best regards
