I noticed that the product information of the nRF54L15 series kit supports 4Mbps, but I'm unsure how to verify it. Are there any relevant examples available? I have currently tried the radio_test example, but this example doesn't show the actual data rate.
Hi,
4 Mbit phy is for proprietary protocols only, not BLE (which goes up to 2 Mbit.)
With the radio test sample in nRF Connect SDK v3.0.0, when building for the nRF54L15 DK, you should have the additional options to select data_rate of nrf_4Mbit_BT04 and/or nrf_4MbitBT06.
You can also test it with Enhanced Shockburst (ESB) using the ESB samples, by changing the configuration structure in main.c used for esb_init() from
config.bitrate = ESB_BITRATE_2MBPS
to
config.bitrate = ESB_BITRATE_4MBPS
Regards,
Terje
Hi,
4 Mbit phy is for proprietary protocols only, not BLE (which goes up to 2 Mbit.)
With the radio test sample in nRF Connect SDK v3.0.0, when building for the nRF54L15 DK, you should have the additional options to select data_rate of nrf_4Mbit_BT04 and/or nrf_4MbitBT06.
You can also test it with Enhanced Shockburst (ESB) using the ESB samples, by changing the configuration structure in main.c used for esb_init() from
config.bitrate = ESB_BITRATE_2MBPS
to
config.bitrate = ESB_BITRATE_4MBPS
Regards,
Terje
/*
* Copyright (c) 2018 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
*/
#include <zephyr/drivers/clock_control.h>
#include <zephyr/drivers/clock_control/nrf_clock_control.h>
#if defined(NRF54L15_XXAA)
#include <hal/nrf_clock.h>
#endif /* defined(NRF54L15_XXAA) */
#include <zephyr/drivers/gpio.h>
#include <zephyr/irq.h>
#include <zephyr/logging/log.h>
#include <nrf.h>
#include <esb.h>
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/kernel.h>
#include <zephyr/types.h>
#include <dk_buttons_and_leds.h>
#if defined(CONFIG_CLOCK_CONTROL_NRF2)
#include <hal/nrf_lrcconf.h>
#endif
LOG_MODULE_REGISTER(esb_ptx, CONFIG_ESB_PTX_APP_LOG_LEVEL);
static uint32_t total_bytes_sent = 0;
static uint32_t last_report_time = 0;
static bool ready = true;
static struct esb_payload rx_payload;
//static struct esb_payload tx_payload = ESB_CREATE_PAYLOAD(0,
// 0x01, 0x00, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08);
static struct esb_payload tx_payload = ESB_CREATE_PAYLOAD(0,
0x01, 0x00, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20);
#define _RADIO_SHORTS_COMMON \
(RADIO_SHORTS_READY_START_Msk | RADIO_SHORTS_END_DISABLE_Msk | \
RADIO_SHORTS_ADDRESS_RSSISTART_Msk | \
RADIO_SHORTS_DISABLED_RSSISTOP_Msk)
#define PACKET_SIZE 252 // ESB最大有效载荷
#define NO_ACK_MODE 1 // 禁用ACK提高吞吐量
void event_handler(struct esb_evt const *event)
{
ready = true;
static uint32_t last_rx_timestamp = 0;
static uint32_t total_bytes_received = 0;
switch (event->evt_id) {
case ESB_EVENT_TX_SUCCESS:
LOG_DBG("TX SUCCESS EVENT");
break;
case ESB_EVENT_TX_FAILED:
LOG_DBG("TX FAILED EVENT");
break;
case ESB_EVENT_RX_RECEIVED:
while (esb_read_rx_payload(&rx_payload) == 0) {
uint32_t rx_timestamp = k_uptime_get(); // 当前接收时间戳（单位：毫秒）
uint32_t tx_timestamp = 0;
// 从数据包中提取发送时间戳
tx_timestamp |= rx_payload.data[28] << 24;
tx_timestamp |= rx_payload.data[29] << 16;
tx_timestamp |= rx_payload.data[30] << 8;
tx_timestamp |= rx_payload.data[31];
// 计算接收到的数据包的传输时间（单位：秒）
uint32_t time_diff = rx_timestamp - tx_timestamp; // 时间差（毫秒）
float time_diff_sec = time_diff / 1000.0f; // 转换为秒
// 计算吞吐量（单位：Mbps）
float throughput = (rx_payload.length * 8) / time_diff_sec / 1000000.0f; // 转换为 Mbps
total_bytes_received += rx_payload.length;
// 打印吞吐量和其他调试信息
LOG_DBG("Packet received, len %d, time_diff: %d ms, throughput: %.2f Mbps : "
"0x%02x, 0x%02x, 0x%02x, 0x%02x, "
"0x%02x, 0x%02x, 0x%02x, 0x%02x",
rx_payload.length, time_diff, throughput,
rx_payload.data[0], rx_payload.data[1],
rx_payload.data[2], rx_payload.data[3],
rx_payload.data[4], rx_payload.data[5],
rx_payload.data[6], rx_payload.data[7]);
}
break;
}
}
#if defined(CONFIG_CLOCK_CONTROL_NRF)
int clocks_start(void)
{
int err;
int res;
struct onoff_manager *clk_mgr;
struct onoff_client clk_cli;
clk_mgr = z_nrf_clock_control_get_onoff(CLOCK_CONTROL_NRF_SUBSYS_HF);
if (!clk_mgr) {
LOG_ERR("Unable to get the Clock manager");
return -ENXIO;
}
sys_notify_init_spinwait(&clk_cli.notify);
err = onoff_request(clk_mgr, &clk_cli);
if (err < 0) {
LOG_ERR("Clock request failed: %d", err);
return err;
}
do {
err = sys_notify_fetch_result(&clk_cli.notify, &res);
if (!err && res) {
LOG_ERR("Clock could not be started: %d", res);
return res;
}
} while (err);
#if defined(NRF54L15_XXAA)
/* MLTPAN-20 */
nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_PLLSTART);
#endif /* defined(NRF54L15_XXAA) */
LOG_DBG("HF clock started");
return 0;
}
#elif defined(CONFIG_CLOCK_CONTROL_NRF2)
int clocks_start(void)
{
int err;
int res;
const struct device *radio_clk_dev =
DEVICE_DT_GET_OR_NULL(DT_CLOCKS_CTLR(DT_NODELABEL(radio)));
struct onoff_client radio_cli;
/** Keep radio domain powered all the time to reduce latency. */
nrf_lrcconf_poweron_force_set(NRF_LRCCONF010, NRF_LRCCONF_POWER_DOMAIN_1, true);
sys_notify_init_spinwait(&radio_cli.notify);
err = nrf_clock_control_request(radio_clk_dev, NULL, &radio_cli);
do {
err = sys_notify_fetch_result(&radio_cli.notify, &res);
if (!err && res) {
LOG_ERR("Clock could not be started: %d", res);
return res;
}
} while (err == -EAGAIN);
#if defined(NRF54L15_XXAA)
/* MLTPAN-20 */
nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_PLLSTART);
#endif /* defined(NRF54L15_XXAA) */
LOG_DBG("HF clock started");
return 0;
}
#else
BUILD_ASSERT(false, "No Clock Control driver");
#endif /* defined(CONFIG_CLOCK_CONTROL_NRF2) */
int esb_initialize(void)
{
int err;
/* These are arbitrary default addresses. In end user products
* different addresses should be used for each set of devices.
*/
uint8_t base_addr_0[4] = {0xE7, 0xE7, 0xE7, 0xE7};
uint8_t base_addr_1[4] = {0xC2, 0xC2, 0xC2, 0xC2};
uint8_t addr_prefix[8] = {0xE7, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8};
struct esb_config config = ESB_DEFAULT_CONFIG;
config.protocol = ESB_PROTOCOL_ESB_DPL;
config.retransmit_delay = 600;
config.bitrate = ESB_BITRATE_4MBPS;
config.event_handler = event_handler;
config.mode = ESB_MODE_PTX;
config.selective_auto_ack = true;
if (IS_ENABLED(CONFIG_ESB_FAST_SWITCHING)) {
config.use_fast_ramp_up = true;
}
err = esb_init(&config);
if (err) {
return err;
}
err = esb_set_base_address_0(base_addr_0);
if (err) {
return err;
}
err = esb_set_base_address_1(base_addr_1);
if (err) {
return err;
}
err = esb_set_prefixes(addr_prefix, ARRAY_SIZE(addr_prefix));
if (err) {
return err;
}
return 0;
}
static void leds_update(uint8_t value)
{
uint32_t leds_mask =
(!(value % 8 > 0 && value % 8 <= 4) ? DK_LED1_MSK : 0) |
(!(value % 8 > 1 && value % 8 <= 5) ? DK_LED2_MSK : 0) |
(!(value % 8 > 2 && value % 8 <= 6) ? DK_LED3_MSK : 0) |
(!(value % 8 > 3) ? DK_LED4_MSK : 0);
dk_set_leds(leds_mask);
}
int main(void)
{
int err;
LOG_INF("Enhanced ShockBurst ptx sample");
err = clocks_start();
if (err) {
return 0;
}
err = dk_leds_init();
if (err) {
LOG_ERR("LEDs initialization failed, err %d", err);
return 0;
}
err = esb_initialize();
if (err) {
LOG_ERR("ESB initialization failed, err %d", err);
return 0;
}
LOG_INF("Initialization complete");
LOG_INF("Sending test packet");
tx_payload.noack = NO_ACK_MODE; // 禁用ACK
uint32_t packet_counter = 0;
uint32_t start_time = k_uptime_get();
while (1) {
if (ready) {
ready = false;
esb_flush_tx();
leds_update(tx_payload.data[1]);
// 获取当前发送时间戳，并存入数据包的最后 4 字节
uint32_t timestamp = (uint32_t)k_uptime_get();
tx_payload.data[28] = (timestamp >> 24) & 0xFF;
tx_payload.data[29] = (timestamp >> 16) & 0xFF;
tx_payload.data[30] = (timestamp >> 8) & 0xFF;
tx_payload.data[31] = timestamp & 0xFF;
err = esb_write_payload(&tx_payload);
if (err) {
LOG_ERR("Payload write failed, err %d", err);
}
// 统计发送的字节数
total_bytes_sent += tx_payload.length; // 累加已发送的字节数
uint32_t now = k_uptime_get();
if (now - last_report_time >= 1000) { // 每秒报告一次吞吐量
float time_elapsed = (now - last_report_time) / 1000.0f;
float throughput = (total_bytes_sent * 8) / time_elapsed / 1000000.0f; // 计算吞吐量，单位为Mbps
LOG_INF("Throughput: %.2f Mbps (total bytes: %u)", throughput, total_bytes_sent);
total_bytes_sent = 0; // 重置已发送字节数
last_report_time = now; // 更新报告时间
}
}
k_sleep(K_MSEC(1)); // 提高发送频率
}
}
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/clock_control.h>
#include <zephyr/drivers/clock_control/nrf_clock_control.h>
#if defined(NRF54L15_XXAA)
#include <hal/nrf_clock.h>
#endif /* defined(NRF54L15_XXAA) */
#include <zephyr/drivers/gpio.h>
#include <zephyr/irq.h>
#include <zephyr/logging/log.h>
#include <nrf.h>
#include <esb.h>
#include <zephyr/kernel.h>
#include <zephyr/types.h>
#include <dk_buttons_and_leds.h>
#if defined(CONFIG_CLOCK_CONTROL_NRF2)
#include <hal/nrf_lrcconf.h>
#endif
#define PACKET_SIZE 252
LOG_MODULE_REGISTER(esb_prx, CONFIG_ESB_PRX_APP_LOG_LEVEL);
static struct esb_payload rx_payload;
static void leds_update(uint8_t value)
{
uint32_t leds_mask =
(!(value % 8 > 0 && value % 8 <= 4) ? DK_LED1_MSK : 0) |
(!(value % 8 > 1 && value % 8 <= 5) ? DK_LED2_MSK : 0) |
(!(value % 8 > 2 && value % 8 <= 6) ? DK_LED3_MSK : 0) |
(!(value % 8 > 3) ? DK_LED4_MSK : 0);
dk_set_leds(leds_mask);
}
static uint32_t total_bytes_received = 0;
static uint32_t last_report_time = 0;
void event_handler(struct esb_evt const *event)
{
static uint32_t last_rx_timestamp = 0;
switch (event->evt_id) {
case ESB_EVENT_RX_RECEIVED:
while (esb_read_rx_payload(&rx_payload) == 0) {
total_bytes_received += rx_payload.length;
}
uint32_t now = k_uptime_get();
if (now - last_report_time >= 10000) { // 每 10 秒报告一次吞吐量
float time_elapsed = (now - last_report_time) / 1000.0f; // 转换为秒
float throughput = (total_bytes_received * 8) / time_elapsed / 1000000.0f; // 计算吞吐量，单位为Mbps
LOG_INF("Throughput: %.2f Mbps (total bytes: %u)", throughput, total_bytes_received);
total_bytes_received = 0; // 重置字节数
last_report_time = now; // 更新报告时间
}
break;
}
}
#if defined(CONFIG_CLOCK_CONTROL_NRF)
int clocks_start(void)
{
int err;
int res;
struct onoff_manager *clk_mgr;
struct onoff_client clk_cli;
clk_mgr = z_nrf_clock_control_get_onoff(CLOCK_CONTROL_NRF_SUBSYS_HF);
if (!clk_mgr) {
LOG_ERR("Unable to get the Clock manager");
return -ENXIO;
}
sys_notify_init_spinwait(&clk_cli.notify);
err = onoff_request(clk_mgr, &clk_cli);
if (err < 0) {
LOG_ERR("Clock request failed: %d", err);
return err;
}
do {
err = sys_notify_fetch_result(&clk_cli.notify, &res);
if (!err && res) {
LOG_ERR("Clock could not be started: %d", res);
return res;
}
} while (err);
#if defined(NRF54L15_XXAA)
/* MLTPAN-20 */
nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_PLLSTART);
#endif /* defined(NRF54L15_XXAA) */
LOG_DBG("HF clock started");
return 0;
}
#elif defined(CONFIG_CLOCK_CONTROL_NRF2)
int clocks_start(void)
{
int err;
int res;
const struct device *radio_clk_dev =
DEVICE_DT_GET_OR_NULL(DT_CLOCKS_CTLR(DT_NODELABEL(radio)));
struct onoff_client radio_cli;
/** Keep radio domain powered all the time to reduce latency. */
nrf_lrcconf_poweron_force_set(NRF_LRCCONF010, NRF_LRCCONF_POWER_DOMAIN_1, true);
sys_notify_init_spinwait(&radio_cli.notify);
err = nrf_clock_control_request(radio_clk_dev, NULL, &radio_cli);
do {
err = sys_notify_fetch_result(&radio_cli.notify, &res);
if (!err && res) {
LOG_ERR("Clock could not be started: %d", res);
return res;
}
} while (err == -EAGAIN);
#if defined(NRF54L15_XXAA)
/* MLTPAN-20 */
nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_PLLSTART);
#endif /* defined(NRF54L15_XXAA) */
LOG_DBG("HF clock started");
return 0;
}
#else
BUILD_ASSERT(false, "No Clock Control driver");
#endif /* defined(CONFIG_CLOCK_CONTROL_NRF2) */
int esb_initialize(void)
{
int err;
/* These are arbitrary default addresses. In end user products
* different addresses should be used for each set of devices.
*/
uint8_t base_addr_0[4] = {0xE7, 0xE7, 0xE7, 0xE7};
uint8_t base_addr_1[4] = {0xC2, 0xC2, 0xC2, 0xC2};
uint8_t addr_prefix[8] = {0xE7, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8};
struct esb_config config = ESB_DEFAULT_CONFIG;
config.protocol = ESB_PROTOCOL_ESB_DPL;
config.bitrate = ESB_BITRATE_4MBPS;
config.mode = ESB_MODE_PRX;
config.event_handler = event_handler;
config.selective_auto_ack = true;
if (IS_ENABLED(CONFIG_ESB_FAST_SWITCHING)) {
config.use_fast_ramp_up = true;
}
err = esb_init(&config);
if (err) {
return err;
}
err = esb_set_base_address_0(base_addr_0);
if (err) {
return err;
}
err = esb_set_base_address_1(base_addr_1);
if (err) {
return err;
}
err = esb_set_prefixes(addr_prefix, ARRAY_SIZE(addr_prefix));
if (err) {
return err;
}
return 0;
}
int main(void)
{
int err;
LOG_INF("Enhanced ShockBurst prx sample");
err = clocks_start();
if (err) {
return 0;
}
err = dk_leds_init();
if (err) {
LOG_ERR("LEDs initialization failed, err %d", err);
return 0;
}
err = esb_initialize();
if (err) {
LOG_ERR("ESB initialization failed, err %d", err);
return 0;
}
LOG_INF("Initialization complete");
err = esb_start_rx();
if (err) {
LOG_ERR("RX setup failed, err %d", err);
return 0;
}
/* return to idle thread */
return 0;
}
Thank you for your reply. I used the ESB example for testing and only modified the main.c to add timestamps. However, the current measured transmission rate is only 0.12Mbps. How can I improve the transmission speed? In 4Mbps mode, I expected to achieve a transmission rate of 2-3Mbps.
In addition to adding the timestamps, where else do I need to make adjustments? I increased the payload to 32 bytes. Is 32 bytes the maximum payload size for the NRF54L15?