举一个关于KNX，zigbee在是stm32平台的例程，使用背景是智能开关发送，智能桌灯接收命令

以下是一个关于KNX和Zigbee在STM32平台的例程，用于智能开关发送和智能桌灯接收命令的示例。

对于KNX通信协议，我们可以使用KNX库来实现。对于Zigbee通信协议，我们可以使用Zigbee库来实现。在STM32平台上，我们可以使用HAL库来访问硬件资源，如GPIO和USART。

以下是一个使用STM32CubeMX和HAL库编写的示例程序：

#include "main.h"
#include "knx.h"
#include "zigbee.h"

/* Configure system clock */
void SystemClock_Config(void);

/* Configure GPIOs */
void GPIO_Init(void);

/* Configure USARTs */
void USART1_Init(void);
void USART2_Init(void);

/* Configure KNX */
void KNX_Init(void);
void KNX_Send(uint8_t *data, uint16_t size);

/* Configure Zigbee */
void Zigbee_Init(void);
void Zigbee_Receive(uint8_t *data, uint16_t size);

int main(void)
{
  /* Configure system clock */
  SystemClock_Config();

  /* Configure GPIOs */
  GPIO_Init();

  /* Configure USARTs */
  USART1_Init();
  USART2_Init();

  /* Initialize KNX */
  KNX_Init();

  /* Initialize Zigbee */
  Zigbee_Init();

  while (1)
  {
    /* Read switch state */
    uint8_t switch_state = HAL_GPIO_ReadPin(SWITCH_GPIO_Port, SWITCH_Pin);

    /* If switch is pressed, send command to Zigbee */
    if (switch_state == GPIO_PIN_RESET)
    {
      uint8_t command[] = {0x01, 0x02, 0x03}; // Example command
      Zigbee_Send(command, sizeof(command));
    }

    /* Receive command from KNX */
    uint8_t command[256];
    uint16_t size = KNX_Receive(command, sizeof(command));
    if (size > 0)
    {
      /* Process command */
      HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_SET);
    }
  }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage 
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** 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();
  }
}

void GPIO_Init(void)
{
  /* Configure LED pin */
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = LED_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);

  /* Configure switch pin */
  GPIO_InitStruct.Pin = SWITCH_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(SWITCH_GPIO_Port, &GPIO_InitStruct);
}

void USART1_Init(void)
{
  /* Configure USART1 pins */
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = USART1_TX_Pin|USART1_RX_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* Configure USART1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 9600;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
}

void USART2_Init(void)
{
  /* Configure USART2 pins */
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = USART2_TX_Pin|USART2_RX_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* Configure USART2 */
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
}

void KNX_Init(void)
{
  /* Initialize KNX */
  KNX_InitTypeDef KNX_InitStruct = {0};
  KNX_InitStruct.Address = 0x1234; // Example KNX address
  KNX_InitStruct.BaudRate = 9600; // Example KNX baud rate
  KNX_Init(&KNX_InitStruct);
}

void KNX_Send(uint8_t *data, uint16_t size)
{
  /* Send data over KNX */
  KNX_SendFrame(data, size);
}

uint16_t KNX_Receive(uint8_t *data, uint16_t size)
{
  /* Receive data from KNX */
  KNX_FrameTypeDef frame;
  uint16_t received_size = KNX_ReceiveFrame(&frame, size);
  if (received_size > 0)
  {
    memcpy(data, frame.Data, received_size);
  }
  return received_size;
}

void Zigbee_Init(void)
{
  /* Initialize Zigbee */
  Zigbee_InitTypeDef Zigbee_InitStruct = {0};
  Zigbee_InitStruct.Channel = 15; // Example Zigbee channel
  Zigbee_InitStruct.PANID = 0x1234; // Example Zigbee PAN ID
  Zigbee_Init(&Zigbee_InitStruct);
}

void Zigbee_Send(uint8_t *data, uint16_t size)
{
  /* Send data over Zigbee */
  Zigbee_SendFrame(data, size);
}

void Zigbee_Receive(uint8_t *data, uint16_t size)
{
  /* Receive data from Zigbee */
  uint16_t received_size = Zigbee_ReceiveFrame(data, size);
  if (received_size > 0)
  {
    /* Process received data */
    HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_SET);
  }
}

在此示例中，我们使用STM32的USART1和USART2来分别实现KNX和Zigbee的通信。我们还使用两个GPIO来控制LED和开关。当开关被按下时，我们发送一个命令到Zigbee。当从KNX接收到命令时，我们点亮LED。

请注意，此示例程序仅供参考，具体实现可能因硬件资源和通信协议的不同而有所不同。