hi,We developed a Bluetooth product based on NRF52832, but the bandwidth test was not qualified. According to the requirements of FCC Part 15.247 regulations, the Bluetooth BLE product belongs to digital modulation products, and the bandwidth of 6dB needs to be at least 500kHz, but the test result is only 480+kHz. To solve this problem, should you consider the hardware problem or the software problem? Can you give me so/**
* Copyright (c) 2014 - 2017, Nordic Semiconductor ASA
*
* All rights reserved.
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* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
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/** @file
*
* @defgroup nrf_radio_test_example_main main.c
* @{
* @ingroup nrf_radio_test_example
* @brief Radio Test Example Application main file.
*
* This file contains the source code for a sample application using the NRF_RADIO, and is controlled through the serial port.
*
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include "bsp.h"
#include "nrf.h"
#include "radio_test.h"
#include "app_uart.h"
#include "app_error.h"
#include "nordic_common.h"
#include "power_driver.h"
#include "nrf_delay.h"
static uint8_t mode_ = RADIO_MODE_MODE_Nrf_2Mbit;
static uint8_t txpower_ = RADIO_TXPOWER_TXPOWER_0dBm;
static int channel_start_ = 0;
static int channel_end_ = 80;
static int delayms_ = 10;
static bool sweep = false;
#define LED_BLUE 11
#define led_blue_off() nrf_gpio_pin_set(LED_BLUE)
#define led_blue_on() nrf_gpio_pin_clear(LED_BLUE)
typedef enum
{
RADIO_TEST_NOP, /**< No test running. */
RADIO_TEST_TXCC, /**< TX constant carrier. */
RADIO_TEST_TXMC, /**< TX modulated carrier. */
RADIO_TEST_TXSWEEP, /**< TX sweep. */
RADIO_TEST_RXC, /**< RX constant carrier. */
RADIO_TEST_RXSWEEP, /**< RX sweep. */
} radio_tests_t;
#define BELL 7 // Bell
#define UART_TX_BUF_SIZE 1024 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 1 /**< UART RX buffer size. */
void uart_error_handle(app_uart_evt_t * p_event)
{
if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_communication);
}
else if (p_event->evt_type == APP_UART_FIFO_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_code);
}
}
/** @brief Function for configuring all peripherals used in this example.
*/
static void init(void)
{
NRF_RNG->TASKS_START = 1;
// Start 16 MHz crystal oscillator
NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
NRF_CLOCK->TASKS_HFCLKSTART = 1;
// Wait for the external oscillator to start up
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
// Do nothing.
}
}
/** @brief Function for outputting usage info to the serial port.
*/
static void help(void)
{
printf("Usage:\r\n");
printf("a: Enter start channel for sweep/channel for constant carrier\r\n");
printf(" 输入扫描的起始通道/恒定载波的通道\r\n");
printf("b: Enter end channel for sweep\r\n");
printf(" 输入扫描终端通道\r\n");
printf("c: Start TX carrier\r\n");
printf(" 开始发送载波\r\n");
printf("d: Enter time on each channel (1ms-99ms)\r\n");
printf(" 输入每个通道输入时间(1ms-99ms)\r\n");
printf("e: Cancel sweep/carrier\r\n");
printf(" 取消扫描/载波\r\n");
printf("m: Enter data rate\r\n");
printf(" 输入数据速率\r\n");
printf("o: Start modulated TX carrier\r\n");
printf(" 启动调制的发送载波\r\n");
printf("p: Enter output power\r\n");
printf(" 输入输出功率\r\n");
printf("s: Print current delay, channels and so on\r\n");
printf(" 打印当前延时、通道等信息\r\n");
printf("r: Start RX sweep\r\n");
printf(" 开始接收扫描\r\n");
printf("t: Start TX sweep\r\n");
printf(" 开始发送扫描\r\n");
printf("x: Start RX carrier\r\n");
printf(" 开始接收载波\r\n");
}
/** @brief Function for reading the data rate.
*/
void get_datarate(void)
{
uint8_t c;
// printf("Enter data rate ('0'=250 Kbit/s, '1'=1 Mbit/s and '2'=2 Mbit/s):\r\n");
printf("输入数据速率('0'= 250kbit/s， '1'= 1mbit/s， '2'= 2mbit/s): :\r\n");
while (true)
{
scanf("%c",&c);
if ((c >= '0') && (c <= '2'))
{
printf("%c\r\n",c);
break;
}
else
{
printf("%c\r\n",BELL);
}
}
if (c == '0')
{
mode_ = RADIO_MODE_MODE_Nrf_250Kbit;
}
else if (c == '1')
{
mode_ = RADIO_MODE_MODE_Nrf_1Mbit;
}
else
{
mode_ = RADIO_MODE_MODE_Nrf_2Mbit;
}
printf("\r\n");
}
/** @brief Function for reading the output power.
*/
void get_power(void)
{
uint8_t c;
// printf("Enter output power ('0'=+4 dBm, '1'=0 dBm,...,'7'=-30 dBm):\r\n");
printf("输入发送功率('0'=+4 dBm, '1'=0 dBm, '2'=-4 dBm, '3'=-8 dBm, '4'=-12 dBm, '5'=-16 dBm, '6'=-20 dBm, '7'=-30 dBm):\r\n");
while (true)
{
scanf("%c",&c);
if ((c >= '0') && (c <= '7'))
{
UNUSED_VARIABLE(app_uart_put(c));
break;
}
else
{
UNUSED_VARIABLE(app_uart_put(BELL));
}
}
switch (c)
{
case '0':
txpower_ = RADIO_TXPOWER_TXPOWER_Pos4dBm;
break;
case '1':
txpower_ = RADIO_TXPOWER_TXPOWER_0dBm;
break;
case '2':
txpower_ = RADIO_TXPOWER_TXPOWER_Neg4dBm;
break;
case '3':
txpower_ = RADIO_TXPOWER_TXPOWER_Neg8dBm;
break;
case '4':
txpower_ = RADIO_TXPOWER_TXPOWER_Neg12dBm;
break;
case '5':
txpower_ = RADIO_TXPOWER_TXPOWER_Neg16dBm;
break;
case '6':
txpower_ = RADIO_TXPOWER_TXPOWER_Neg20dBm;
break;
case '7':
// fall through
default:
txpower_ = RADIO_TXPOWER_TXPOWER_Neg30dBm;
break;
}
printf("\r\n");
}
/** @brief Function for printing parameters to the serial port.
*/
void print_parameters(void)
{
// printf("Parameters:\r\n");
printf("参数:\r\n");
switch (mode_)
{
case RADIO_MODE_MODE_Nrf_250Kbit:
printf("Data rate...........: 250 Kbit/s\r\n");
break;
case RADIO_MODE_MODE_Nrf_1Mbit:
printf("Data rate...........: 1 Mbit/s\r\n");
break;
case RADIO_MODE_MODE_Nrf_2Mbit:
printf("Data rate...........: 2 Mbit/s\r\n");
break;
}
switch (txpower_)
{
case RADIO_TXPOWER_TXPOWER_Pos4dBm:
printf("TX Power............: +4 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_0dBm:
printf("TX Power............: 0 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg4dBm:
printf("TX Power............: -4 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg8dBm:
printf("TX Power............: -8 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg12dBm:
printf("TX Power............: -12 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg16dBm:
printf("TX Power............: -16 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg20dBm:
printf("TX Power............: -20 dBm\r\n");
break;
case RADIO_TXPOWER_TXPOWER_Neg30dBm:
printf("TX Power............: -30 dBm\r\n");
break;
default:
// No implementation needed.
break;
}
printf("(Start) Channel.....: %d\r\n",channel_start_);
printf("End Channel.........: %d\r\n",channel_end_);
printf("Time on each channel: %d\r\n",delayms_);
printf(" ms\r\n");
}
///中断回调函数
static void power_key_press_handler(nrf_gpiote_polarity_t action)
{
unsigned int timeout = 0;
if(NRF_GPIOTE_POLARITY_LOTOHI == action)
{
if(nrf_gpio_pin_read(PWOER_KEY_PIN))/*判断用户是否长按,按下为高电平*/
{
nrf_delay_ms(2000);
if(nrf_gpio_pin_read(PWOER_KEY_PIN))
{
///进行关机操作
printf("Power down.....\r\n");
led_blue_off();
nrf_delay_ms(1000);
DVDD1_power_off();
DVDD_power_off();
}
}
// while(nrf_gpio_pin_read(PWOER_KEY_PIN))/*判断用户是否长按,按下为高电平*/
// {
// timeout++;
// if(timeout >= 200)
// {
// ///进行关机操作
// nrf_delay_ms(100);
// printf("Power down.....\r\n");
// led_blue_off();
// nrf_delay_ms(100);
// DVDD_power_off();
//// DVDD1_power_off();
// }
// nrf_delay_ms(10);
// }
}
}
void led_init(void)
{
nrf_gpio_cfg_output(LED_BLUE);
led_blue_off();
}
/** @brief Function for main application entry.
*/
int main(void)
{
uint32_t err_code;
radio_tests_t test = RADIO_TEST_NOP;
radio_tests_t cur_test = RADIO_TEST_NOP;
init();
const app_uart_comm_params_t comm_params =
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
APP_UART_FLOW_CONTROL_DISABLED,
false,
UART_BAUDRATE_BAUDRATE_Baud115200
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_error_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
printf("RF Test\r\n");
NVIC_EnableIRQ(TIMER0_IRQn);
__enable_irq();
led_init();
///初始化电源按键
PowerInit(power_key_press_handler);
nrf_delay_ms(2000); //长按3秒开机
///按下开机键进入开机状态
if(nrf_gpio_pin_read(PWOER_KEY_PIN))
{
///开启电源
///cpu供电
DVDD_power_on();
DVDD1_power_on();
nrf_delay_ms(500);
led_blue_on();
printf("power on\r\n");
}
while (true)
{
uint8_t control;
scanf("%c",&control);
switch (control)
{
case 'a':
while (true)
{
// printf("Enter start channel (two decimal digits, 00 to 80):\r\n");
printf("输入起始通道(两位十进制数字，00到80)\r\n");
scanf("%d",&channel_start_);
if ((channel_start_ <= 80)&&(channel_start_ >= 0))
{
printf("%d\r\n", channel_start_);
break;
}
printf("Channel must be between 0 and 80\r\n");
}
test = cur_test;
break;
case 'b':
while (true)
{
// printf("Enter end channel (two decimal digits, 00 to 80):\r\n");
printf("输入终端通道(两位十进制数字，00到80)\r\n");
scanf("%d",&channel_end_);
if ((channel_end_ <= 80)&&(channel_start_ >= 0))
{
printf("%d\r\n", channel_end_);
break;
}
printf("Channel must be between 0 and 80\r\n");
}
test = cur_test;
break;
case 'c':
printf("开始发送载波\r\n");
test = RADIO_TEST_TXCC;
break;
case 'd':
while (true)
{
// printf("Enter delay in ms (two decimal digits, 01 to 99):\r\n");
printf("输入延迟，单位为ms(两位十进制数字，01到99)\r\n");
scanf("%d",&delayms_);
if ((delayms_ > 0) && (delayms_ < 100))
{
printf("%d\r\n", delayms_);
break;
}
printf("Delay must be between 1 and 99\r\n");
}
test = cur_test;
break;
case 'e':
printf("取消扫描/载波\r\n");
radio_sweep_end();
cur_test = RADIO_TEST_NOP;
break;
case 'm':
get_datarate();
test = cur_test;
break;
case 'o':
test = RADIO_TEST_TXMC;
// printf("TX modulated carrier\r\n");
printf("启动调制的发送载波\r\n");
break;
case 'p':
get_power();
test = cur_test;
break;
case 'r':
test = RADIO_TEST_RXSWEEP;
// printf("RX Sweep\r\n");
printf("开始接收扫描\r\n");
break;
case 's':
print_parameters();
break;
case 't':
test = RADIO_TEST_TXSWEEP;
// printf("TX Sweep\r\n");
printf("开始发送扫描\r\n");
break;
case 'x':
test = RADIO_TEST_RXC;
// printf("RX constant carrier\r\n");
printf("开始接收载波\r\n");
break;
case 'h':
help();
nrf_delay_ms(200);
break;
default:
// No implementation needed
break;
}
switch (test)
{
case RADIO_TEST_TXCC:
if (sweep)
{
radio_sweep_end();
sweep = false;
}
radio_tx_carrier(txpower_, mode_, channel_start_);
cur_test = test;
test = RADIO_TEST_NOP;
break;
case RADIO_TEST_TXMC:
if (sweep)
{
radio_sweep_end();
sweep = false;
}
radio_modulated_tx_carrier(txpower_, mode_, channel_start_);
cur_test = test;
test = RADIO_TEST_NOP;
break;
case RADIO_TEST_TXSWEEP:
radio_tx_sweep_start(txpower_, mode_, channel_start_, channel_end_, delayms_);
sweep = true;
cur_test = test;
test = RADIO_TEST_NOP;
break;
case RADIO_TEST_RXC:
if (sweep)
{
radio_sweep_end();
sweep = false;
}
radio_rx_carrier(mode_, channel_start_);
cur_test = test;
test = RADIO_TEST_NOP;
break;
case RADIO_TEST_RXSWEEP:
radio_rx_sweep_start(mode_, channel_start_, channel_end_, delayms_);
sweep = true;
cur_test = test;
test = RADIO_TEST_NOP;
break;
case RADIO_TEST_NOP:
// Fall through.
default:
// No implementation needed.
break;
}
}
}
/** @} */
me advice on this? The SDK version used is the official 13.0.0 04a0bf.
