nrf24l01 fhss stm32示例
时间: 2023-07-07 09:03:17 浏览: 74
以下是一个基于STM32的nRF24L01 FHSS的示例代码,其中使用了STM32的HAL库和nRF24L01的库文件。本示例使用了FHSS(频率跳变扩频)技术,以提高通信质量和安全性。
```c
#include "main.h"
#include "spi.h"
#include "nrf24l01.h"
#define CHANNEL_NUM 50
#define CHANNEL_HOP_INTERVAL 1 // in milliseconds
uint8_t tx_addr[5] = {0x12, 0x34, 0x56, 0x78, 0x90}; // 5-byte address of this node
uint8_t rx_addr[5] = {0x98, 0x76, 0x54, 0x32, 0x10}; // 5-byte address of the other node
void SystemClock_Config(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_SPI1_Init();
nrf24l01_init(); // initialize nRF24L01 module
nrf24l01_set_tx_addr(tx_addr); // set transmission address
nrf24l01_set_rx_addr(rx_addr); // set reception address
uint8_t channel_num = 0;
uint32_t last_hop_time = 0;
while (1)
{
if (HAL_GetTick() - last_hop_time >= CHANNEL_HOP_INTERVAL)
{
channel_num = (channel_num + 1) % CHANNEL_NUM;
nrf24l01_set_channel(channel_num); // change channel
last_hop_time = HAL_GetTick(); // update last hop time
}
if (nrf24l01_data_received())
{
uint8_t data[32];
nrf24l01_get_data(data); // get received data
// do something with received data
}
uint8_t tx_data[32] = {0}; // data to be transmitted
nrf24l01_transmit_data(tx_data); // transmit data
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
```
在此示例中,循环中的代码将在每个 CHANNEL_HOP_INTERVAL 毫秒内运行一次,并且将使用 nrf24l01_set_channel 函数更改 nRF24L01 模块的通信通道。在每个循环迭代中,该代码还检查是否有数据接收,如果有,则使用 nrf24l01_get_data 函数获取已接收的数据。最后,该代码使用 nrf24l01_transmit_data 函数将一些数据发送到另一个节点。
请注意,此示例仅用于演示目的。应根据您的具体应用程序进行修改和优化。
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