Hi
I have a beacon sending out some data, and I have already finish the TX side, I also want to have a RX side to receive the data, in addition, as there are many other deivices advertising, I want to only receive one device, the name is "TX beacon".
I have write my code like below:
/*
* SPDX-License-Identifier: Apache-2.0
*
*
*/
#include <zephyr/types.h>
#include <stddef.h>
#include <string.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/printk.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>
static bool manuf_data_print(struct bt_data *data, void *user_data)
{
if (data->type == BT_DATA_MANUFACTURER_DATA) {
printk("Manufacturer Data (len %u): ", data->data_len);
for (uint8_t i = 0; i < data->data_len; i++) {
printk("%02X ", data->data[i]);
}
printk("\n");
}
return true;
}
static bool parse_name_cb(struct bt_data *data, void *user_data)
{
char *dev_name = user_data;
if (data->type == BT_DATA_NAME_COMPLETE || data->type == BT_DATA_NAME_SHORTENED) {
memcpy(dev_name, data->data, data->data_len);
dev_name[data->data_len] = '\0';
return false;
}
return true;
}
static void scan_recv_cb(const bt_addr_le_t *addr, int8_t rssi,
uint8_t adv_type, struct net_buf_simple *buf)
{
char addr_str[BT_ADDR_LE_STR_LEN];
char dev_name[31] = {0};
uint8_t backup_buf[buf->len];
memcpy(backup_buf, buf->data, buf->len);
struct net_buf_simple backup;
net_buf_simple_init_with_data(&backup, backup_buf, buf->len);
bt_data_parse(buf, parse_name_cb, dev_name);
if (strcmp(dev_name, "TX beacon") == 0) {printk("Target device found!\n");
// // bt_addr_le_to_str(addr, addr_str, sizeof(addr_str));
// // printk("Target device found: %s (RSSI %d)\n", addr_str, rssi);
bt_data_parse(&backup, manuf_data_print, NULL);}
}
int main(void)
{
int err;
printk("BLE Scanner started\n");
err = bt_enable(NULL);
if (err) {
printk("Bluetooth init failed (err %d)\n", err);
return err;
}
printk("Bluetooth initialized\n");
struct bt_le_scan_param scan_param = {
.type = BT_LE_SCAN_TYPE_ACTIVE,
.options = BT_LE_SCAN_OPT_NONE,
.interval = 0x0060, /* 扫描间隔：60 * 0.625 = 37.5ms */
.window = 0x0030, /* 扫描窗口：约18.75ms */
};
err = bt_le_scan_start(&scan_param, scan_recv_cb);
if (err) {
printk("Starting scanning failed (err %d)\n", err);
return err;
}
printk("Scanning successfully started\n");
while (1) {
k_sleep(K_SECONDS(1));
}
return 0;
}
My config is:
# 启用蓝牙子系统 CONFIG_BT=y # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # 启用观察者角色，允许扫描广告数据 CONFIG_BT_OBSERVER=y # 启用 BLE 扫描相关 API CONFIG_BT_SCAN=y # Config logger CONFIG_LOG=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n CONFIG_LOG_PRINTK=y CONFIG_ASSERT=y #scan CONFIG_BT_SCAN=y CONFIG_BT_SCAN_FILTER_ENABLE=y CONFIG_BT_SCAN_NAME_CNT=3
1.At this time, the filter is no functioning,
if (strcmp(dev_name, "TX beacon") == 0) {printk("Target device found!\n");}
bt_data_parse(&backup, manuf_data_print, NULL);
the result is :
Target device found! 00> Manufacturer Data (len 9): 4C 00 10 05 26 98 DA 17 15 00> Manufacturer Data (len 29): 06 00 01 0F 20 02 5E F5 2E 1A 02 45 7A EE 22 54 08 E9 52 50 --- 7 messages dropped --- 00> C1 7B 00> Manufacturer Data (len 26): 4C 00 0C 0E 00 C8 6C 8A 31 39 28 A6 49 47 16 B1 FB C8 10 06 45 1D A9 0A 48 58 00> Manufacturer Data (len 11): 4C 00 10 07 3A 1F 09 B8 D8 BB 58 00> Manufacturer Data (len 13): 4C 00 0F 05 90 00 D7 1E BC 10 02 25 04 00> Manufacturer Data (len 22): 4C 00 09 08 13 7D C0 A8 12 79 1B 58 13 08 4A DA C8 97 F4 E5 F6 00 00> Manufacturer Data (len 29): 06 00 01 0F 20 22 3F E9 2A AF BE 54 A4 C3 E6 A0 02 32 BF CA 13 2D --- 8 messages dropped --- 00> Manufacturer Data (len 29): 06 00 01 09 20 22 67 00 E8 CB 15 62 06 96 DD DD C4 0F 96 E7 1B EF 77 61 7D 49 93 43 13 00> Manufacturer Data (len 13): 4C 00 0F 05 90 00 5C 70 C6 10 02 20 04 00> Manufacturer Data (len 13): 4C 00 0F 05 90 00 5C 70 C6 10 02 20 04 00> Manufacturer Data (len 5): 65 00 01 C9 04 00> Manufacturer Data (len 20): 7D 02 FF 00 00 FF 00 00 FF 00 00 FF 00 00 FF 00 00 FF 00 00 00> Target device found!
So I am sure when bt_data_parse(buf, parse_name_cb, dev_name) and bt_data_parse(&backup, manuf_data_print, NULL); functions well separetely.
2.However, when my code go to
if (strcmp(dev_name, "TX beacon") == 0) {printk("Target device found!\n");
bt_data_parse(&backup, manuf_data_print, NULL);}
Strange thing happen, bt_data_parse(&backup, manuf_data_print, NULL) can not work and the result is:
Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found! 00> Target device found!
I try to debug it and it will stop at __ASSERT(z_spin_lock_valid(l), "Invalid spinlock %p", l); which is really strange!
Could you help me figure out what is happening? Or is there some easier way to do the NAME filter like "bt_scan_filter_add" and "bt_scan_filter_enable"， Thank you so much for your time!
