前言

前面我们已经做CubeMX和CubeIDE的工程移植，下面我们就将具体的应用程序进行修改

一、系统初始化SYS_APP.c文件

这个文件是系统应用的初始化，包括RTC、UART、低功耗等的初始化与配置。这里我们屏蔽掉DBG_Disable()和DBG_ProbesInit()两个函数。如下所示：

void SystemApp_Init(void)
{/* USER CODE BEGIN SystemApp_Init_1 *//* USER CODE END SystemApp_Init_1 *//* Ensure that MSI is wake-up system clock */__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);/*Initialize timer and RTC*/UTIL_TIMER_Init();/* Debug config : disable serial wires and DbgMcu pins settings *///DBG_Disable();/* Initializes the SW probes pins and the monitor RF pins via Alternate Function *///DBG_ProbesInit();/*Initialize the terminal */UTIL_ADV_TRACE_Init();UTIL_ADV_TRACE_RegisterTimeStampFunction(TimestampNow);

二、中断stm32wlxx_it.c文件

在文件的后面增加按键的中断函数

/* USER CODE BEGIN 1 */
void EXTI0_IRQHandler(void)
{HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);;
}void EXTI1_IRQHandler(void)
{HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1);
}void EXTI4_IRQHandler(void)
{HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4);
}
/* USER CODE END 1 */

三、PingPong的应用程序

将PingPong的应用程序覆盖subghz_phy_app.c的内容

/*!* \file      subghz_phy_app.c** \brief     Ping-Pong implementation** \copyright Revised BSD License, see section \ref LICENSE.** \code*                ______                              _*               / _____)             _              | |*              ( (____  _____ ____ _| |_ _____  ____| |__*               \____ \| ___ |    (_   _) ___ |/ ___)  _ \*               _____) ) ____| | | || |_| ____( (___| | | |*              (______/|_____)_|_|_| \__)_____)\____)_| |_|*              (C)2013-2017 Semtech** \endcode** \author    Miguel Luis ( Semtech )** \author    Gregory Cristian ( Semtech )*/
/**********************************************************************************          Portions COPYRIGHT 2020 STMicroelectronics** @file    subghz_phy_app.c* @author  MCD Application Team* @brief   Application of the SubGHz_Phy Middleware*******************************************************************************//* Includes ------------------------------------------------------------------*/
#include "platform.h"
#include "sys_app.h"
#include "subghz_phy_app.h"
#include "radio.h"
#include "app_version.h"/* USER CODE BEGIN Includes */
#include "stm32_timer.h"
#include "stm32_seq.h"
#include "utilities_def.h"
/* USER CODE END Includes *//* External variables ---------------------------------------------------------*/
/* USER CODE BEGIN EV *//* USER CODE END EV *//* Private typedef -----------------------------------------------------------*//* USER CODE BEGIN PTD */
typedef enum
{RX,RX_TIMEOUT,RX_ERROR,TX,TX_TIMEOUT,
} States_t;
/* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD *//* Configurations */
/*Timeout*/
#define RX_TIMEOUT_VALUE              5000
#define TX_TIMEOUT_VALUE              3000
/* PING string*/
#define PING "PING"
/* PONG string*/
#define PONG "PONG"
/*Size of the payload to be sent*/
/* Size must be greater of equal the PING and PONG*/
#define MAX_APP_BUFFER_SIZE          255
#if (PAYLOAD_LEN > MAX_APP_BUFFER_SIZE)
#error PAYLOAD_LEN must be less or equal than MAX_APP_BUFFER_SIZE
#endif /* (PAYLOAD_LEN > MAX_APP_BUFFER_SIZE) */
/* wait for remote to be in Rx, before sending a Tx frame*/
#define RX_TIME_MARGIN                200
/* Afc bandwidth in Hz */
#define FSK_AFC_BANDWIDTH             83333
/* LED blink Period*/
#define LED_PERIOD_MS                 200
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*/
/* Radio events function pointer */
static RadioEvents_t RadioEvents;
/* USER CODE BEGIN PV *//*Ping Pong FSM states */
static States_t State = RX;
/* App Rx Buffer*/
static uint8_t BufferRx[MAX_APP_BUFFER_SIZE];
/* App Tx Buffer*/
static uint8_t BufferTx[MAX_APP_BUFFER_SIZE];
/* Last  Received Buffer Size*/
uint16_t RxBufferSize = 0;
/* Last  Received packer Rssi*/
int8_t RssiValue = 0;
/* Last  Received packer SNR (in Lora modulation)*/
int8_t SnrValue = 0;
/* Led Timers objects*/
static UTIL_TIMER_Object_t timerLed;
/* device state. Master: true, Slave: false*/
bool isMaster = true;
/* random delay to make sure 2 devices will sync*/
/* the closest the random delays are, the longer it willtake for the devices to sync when started simultaneously*/
static int32_t random_delay;
/* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
/*!* @brief Function to be executed on Radio Tx Done event*/
static void OnTxDone(void);/*** @brief Function to be executed on Radio Rx Done event* @param  payload ptr of buffer received* @param  size buffer size* @param  rssi* @param  LoraSnr_FskCfo*/
static void OnRxDone(uint8_t *payload, uint16_t size, int16_t rssi, int8_t LoraSnr_FskCfo);/*** @brief Function executed on Radio Tx Timeout event*/
static void OnTxTimeout(void);/*** @brief Function executed on Radio Rx Timeout event*/
static void OnRxTimeout(void);/*** @brief Function executed on Radio Rx Error event*/
static void OnRxError(void);/* USER CODE BEGIN PFP */
/*** @brief  Function executed on when led timer elapses* @param  context ptr of LED context*/
static void OnledEvent(void *context);/*** @brief PingPong state machine implementation*/
static void PingPong_Process(void);
/* USER CODE END PFP */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{switch (GPIO_Pin){case  BUTTON_SW1_PIN:BSP_LED_Toggle(LED_BLUE) ;HAL_Delay(20);BSP_LED_Toggle(LED_BLUE) ;APP_PRINTF("BUTTON SW1\r\n");break;case  BUTTON_SW2_PIN:BSP_LED_Toggle(LED_GREEN) ;HAL_Delay(20);BSP_LED_Toggle(LED_GREEN) ;APP_PRINTF("BUTTON SW2\r\n");break;case  BUTTON_SW3_PIN:BSP_LED_Toggle(LED_RED) ;HAL_Delay(20);BSP_LED_Toggle(LED_RED) ;APP_PRINTF("BUTTON SW3\r\n");break;default:APP_PRINTF("Unkonw Button\r\n");break;}
}
/* Exported functions ---------------------------------------------------------*/
void SubghzApp_Init(void)
{/* USER CODE BEGIN SubghzApp_Init_1 */APP_LOG(TS_OFF, VLEVEL_M, "\n\rPING PONG\n\r");/* Print APP version*/APP_LOG(TS_OFF, VLEVEL_M, "APP_VERSION= V%X.%X.%X\r\n",(uint8_t)(__APP_VERSION >> __APP_VERSION_MAIN_SHIFT),(uint8_t)(__APP_VERSION >> __APP_VERSION_SUB1_SHIFT),(uint8_t)(__APP_VERSION >> __APP_VERSION_SUB2_SHIFT));/* Led Timers*/UTIL_TIMER_Create(&timerLed, 0xFFFFFFFFU, UTIL_TIMER_ONESHOT, OnledEvent, NULL);UTIL_TIMER_SetPeriod(&timerLed, LED_PERIOD_MS);UTIL_TIMER_Start(&timerLed);/* USER CODE END SubghzApp_Init_1 *//* Radio initialization */RadioEvents.TxDone = OnTxDone;RadioEvents.RxDone = OnRxDone;RadioEvents.TxTimeout = OnTxTimeout;RadioEvents.RxTimeout = OnRxTimeout;RadioEvents.RxError = OnRxError;Radio.Init(&RadioEvents);/* USER CODE BEGIN SubghzApp_Init_2 *//* Radio Set frequency */Radio.SetChannel(RF_FREQUENCY);/* Radio configuration */
#if ((USE_MODEM_LORA == 1) && (USE_MODEM_FSK == 0))APP_LOG(TS_OFF, VLEVEL_M, "---------------\n\r");APP_LOG(TS_OFF, VLEVEL_M, "LORA_MODULATION\n\r");APP_LOG(TS_OFF, VLEVEL_M, "LORA_BW=%d kHz\n\r", (1 << LORA_BANDWIDTH) * 125);APP_LOG(TS_OFF, VLEVEL_M, "LORA_SF=%d\n\r", LORA_SPREADING_FACTOR);Radio.SetTxConfig(MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,LORA_SPREADING_FACTOR, LORA_CODINGRATE,LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,true, 0, 0, LORA_IQ_INVERSION_ON, TX_TIMEOUT_VALUE);Radio.SetRxConfig(MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,0, true, 0, 0, LORA_IQ_INVERSION_ON, true);Radio.SetMaxPayloadLength(MODEM_LORA, MAX_APP_BUFFER_SIZE);#elif ((USE_MODEM_LORA == 0) && (USE_MODEM_FSK == 1))APP_LOG(TS_OFF, VLEVEL_M, "---------------\n\r");APP_LOG(TS_OFF, VLEVEL_M, "FSK_MODULATION\n\r");APP_LOG(TS_OFF, VLEVEL_M, "FSK_BW=%d Hz\n\r", FSK_BANDWIDTH);APP_LOG(TS_OFF, VLEVEL_M, "FSK_DR=%d bits/s\n\r", FSK_DATARATE);Radio.SetTxConfig(MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0,FSK_DATARATE, 0,FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON,true, 0, 0, 0, TX_TIMEOUT_VALUE);Radio.SetRxConfig(MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE,0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH,0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, true,0, 0, false, true);Radio.SetMaxPayloadLength(MODEM_FSK, MAX_APP_BUFFER_SIZE);#else
#error "Please define a modulation in the subghz_phy_app.h file."
#endif /* USE_MODEM_LORA | USE_MODEM_FSK *//* LED initialization*/BSP_LED_Init(LED_GREEN);BSP_LED_Init(LED_RED);BSP_LED_Init(LED_BLUE);BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI);BSP_PB_Init(BUTTON_SW2, BUTTON_MODE_EXTI);BSP_PB_Init(BUTTON_SW3, BUTTON_MODE_EXTI);/*calculate random delay for synchronization*/random_delay = (Radio.Random()) >> 22; /*10bits random e.g. from 0 to 1023 ms*//*fills tx buffer*/memset(BufferTx, 0x0, MAX_APP_BUFFER_SIZE);APP_LOG(TS_ON, VLEVEL_L, "rand=%d\n\r", random_delay);/*starts reception*/Radio.Rx(RX_TIMEOUT_VALUE + random_delay);/*register task to to be run in while(1) after Radio IT*/UTIL_SEQ_RegTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), UTIL_SEQ_RFU, PingPong_Process);/* USER CODE END SubghzApp_Init_2 */
}/* USER CODE BEGIN EF *//* USER CODE END EF *//* Private functions ---------------------------------------------------------*/static void OnTxDone(void)
{/* USER CODE BEGIN OnTxDone */APP_LOG(TS_ON, VLEVEL_L, "OnTxDone\n\r");/* Update the State of the FSM*/State = TX;/* Run PingPong process in background*/UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), CFG_SEQ_Prio_0);/* USER CODE END OnTxDone */
}static void OnRxDone(uint8_t *payload, uint16_t size, int16_t rssi, int8_t LoraSnr_FskCfo)
{/* USER CODE BEGIN OnRxDone */APP_LOG(TS_ON, VLEVEL_L, "OnRxDone\n\r");
#if ((USE_MODEM_LORA == 1) && (USE_MODEM_FSK == 0))APP_LOG(TS_ON, VLEVEL_L, "RssiValue=%d dBm, SnrValue=%ddB\n\r", rssi, LoraSnr_FskCfo);/* Record payload Signal to noise ratio in Lora*/SnrValue = LoraSnr_FskCfo;
#endif /* USE_MODEM_LORA | USE_MODEM_FSK */
#if ((USE_MODEM_LORA == 0) && (USE_MODEM_FSK == 1))APP_LOG(TS_ON, VLEVEL_L, "RssiValue=%d dBm, Cfo=%dkHz\n\r", rssi, LoraSnr_FskCfo);SnrValue = 0; /*not applicable in GFSK*/
#endif /* USE_MODEM_LORA | USE_MODEM_FSK *//* Update the State of the FSM*/State = RX;/* Clear BufferRx*/memset(BufferRx, 0, MAX_APP_BUFFER_SIZE);/* Record payload size*/RxBufferSize = size;if (RxBufferSize <= MAX_APP_BUFFER_SIZE){memcpy(BufferRx, payload, RxBufferSize);}/* Record Received Signal Strength*/RssiValue = rssi;/* Record payload content*/APP_LOG(TS_ON, VLEVEL_H, "payload. size=%d \n\r", size);for (int i = 0; i < PAYLOAD_LEN; i++){APP_LOG(TS_OFF, VLEVEL_H, "%02X", BufferRx[i]);if (i % 16 == 15){APP_LOG(TS_OFF, VLEVEL_H, "\n\r");}}APP_LOG(TS_OFF, VLEVEL_H, "\n\r");/* Run PingPong process in background*/UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), CFG_SEQ_Prio_0);/* USER CODE END OnRxDone */
}static void OnTxTimeout(void)
{/* USER CODE BEGIN OnTxTimeout */APP_LOG(TS_ON, VLEVEL_L, "OnTxTimeout\n\r");/* Update the State of the FSM*/State = TX_TIMEOUT;/* Run PingPong process in background*/UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), CFG_SEQ_Prio_0);/* USER CODE END OnTxTimeout */
}static void OnRxTimeout(void)
{/* USER CODE BEGIN OnRxTimeout */APP_LOG(TS_ON, VLEVEL_L, "OnRxTimeout\n\r");/* Update the State of the FSM*/State = RX_TIMEOUT;/* Run PingPong process in background*/UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), CFG_SEQ_Prio_0);/* USER CODE END OnRxTimeout */
}static void OnRxError(void)
{/* USER CODE BEGIN OnRxError */APP_LOG(TS_ON, VLEVEL_L, "OnRxError\n\r");/* Update the State of the FSM*/State = RX_ERROR;/* Run PingPong process in background*/UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_SubGHz_Phy_App_Process), CFG_SEQ_Prio_0);/* USER CODE END OnRxError */
}/* USER CODE BEGIN PrFD */
static void PingPong_Process(void)
{Radio.Sleep();switch (State){case RX:if (isMaster == true){if (RxBufferSize > 0){if (strncmp((const char *)BufferRx, PONG, sizeof(PONG) - 1) == 0){UTIL_TIMER_Stop(&timerLed);/* switch off green led */BSP_LED_Off(LED_GREEN);/* master toggles red led */BSP_LED_Toggle(LED_RED);/* Add delay between RX and TX */HAL_Delay(Radio.GetWakeupTime() + RX_TIME_MARGIN);/* master sends PING*/APP_LOG(TS_ON, VLEVEL_L, "...""PING""\n\r");APP_LOG(TS_ON, VLEVEL_L, "Master Tx start\n\r");memcpy(BufferTx, PING, sizeof(PING) - 1);Radio.Send(BufferTx, PAYLOAD_LEN);}else if (strncmp((const char *)BufferRx, PING, sizeof(PING) - 1) == 0){/* A master already exists then become a slave */isMaster = false;APP_LOG(TS_ON, VLEVEL_L, "Slave Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);}else /* valid reception but neither a PING or a PONG message */{/* Set device as master and start again */isMaster = true;APP_LOG(TS_ON, VLEVEL_L, "Master Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);}}}else{if (RxBufferSize > 0){if (strncmp((const char *)BufferRx, PING, sizeof(PING) - 1) == 0){UTIL_TIMER_Stop(&timerLed);/* switch off red led */BSP_LED_Off(LED_RED);/* slave toggles green led */BSP_LED_Toggle(LED_GREEN);/* Add delay between RX and TX */HAL_Delay(Radio.GetWakeupTime() + RX_TIME_MARGIN);/*slave sends PONG*/APP_LOG(TS_ON, VLEVEL_L, "...""PONG""\n\r");APP_LOG(TS_ON, VLEVEL_L, "Slave  Tx start\n\r");memcpy(BufferTx, PONG, sizeof(PONG) - 1);Radio.Send(BufferTx, PAYLOAD_LEN);}else /* valid reception but not a PING as expected */{/* Set device as master and start again */isMaster = true;APP_LOG(TS_ON, VLEVEL_L, "Master Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);}}}break;case TX:APP_LOG(TS_ON, VLEVEL_L, "Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);break;case RX_TIMEOUT:
#if  defined (LOW_POWER_DISABLE) && (LOW_POWER_DISABLE == 0)//UTIL_TIMER_SetPeriod(&timerLed, LED_PERIOD_MS*20);UTIL_TIMER_Stop(&timerLed);BSP_LED_Off(LED_RED) ;BSP_LED_Off(LED_GREEN) ;Radio.Sleep();break;
#endifcase RX_ERROR:if (isMaster == true){/* Send the next PING frame *//* Add delay between RX and TX*//* add random_delay to force sync between boards after some trials*/HAL_Delay(Radio.GetWakeupTime() + RX_TIME_MARGIN + random_delay);APP_LOG(TS_ON, VLEVEL_L, "Master Tx start\n\r");/* master sends PING*/memcpy(BufferTx, PING, sizeof(PING) - 1);Radio.Send(BufferTx, PAYLOAD_LEN);}else{APP_LOG(TS_ON, VLEVEL_L, "Slave Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);}break;case TX_TIMEOUT:APP_LOG(TS_ON, VLEVEL_L, "Slave Rx start\n\r");Radio.Rx(RX_TIMEOUT_VALUE);break;default:break;}
}static void OnledEvent(void *context)
{BSP_LED_Toggle(LED_GREEN);BSP_LED_Toggle(LED_RED);UTIL_TIMER_Start(&timerLed);
}/* USER CODE END PrFD *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

至此，PingPong例程全部功能移植完成。

四、烧写测试

通过编译烧写，我们能看到如下输出

再烧写硬外一个评估板，并上电运行我们能够看到如下输出日志

五、Lora相关参数配置

默认的Lora参数位于subghz_phy_app.h中的宏定义。

#define USE_MODEM_LORA  1
#define USE_MODEM_FSK   0#define REGION_CN470#if defined( REGION_AS923 )#define RF_FREQUENCY                                923000000 /* Hz */
#elif defined( REGION_AU915 )#define RF_FREQUENCY                                915000000 /* Hz */#elif defined( REGION_CN470 )#define RF_FREQUENCY                                470000000 /* Hz */#elif defined( REGION_CN779 )#define RF_FREQUENCY                                779000000 /* Hz */#elif defined( REGION_EU433 )#define RF_FREQUENCY                                433000000 /* Hz */#elif defined( REGION_EU868 )#define RF_FREQUENCY                                868000000 /* Hz */#elif defined( REGION_KR920 )#define RF_FREQUENCY                                920000000 /* Hz */#elif defined( REGION_IN865 )#define RF_FREQUENCY                                865000000 /* Hz */#elif defined( REGION_US915 )#define RF_FREQUENCY                                915000000 /* Hz */#elif defined( REGION_RU864 )#define RF_FREQUENCY                                864000000 /* Hz */#else
#error "Please define a frequency band in the compiler options."
#endif /* REGION_XXxxx */#define TX_OUTPUT_POWER                             14        /* dBm */#if (( USE_MODEM_LORA == 1 ) && ( USE_MODEM_FSK == 0 ))
#define LORA_BANDWIDTH                              0         /* [0: 125 kHz, 1: 250 kHz, 2: 500 kHz, 3: Reserved] */
#define LORA_SPREADING_FACTOR                       7         /* [SF7..SF12] */
#define LORA_CODINGRATE                             1         /* [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] */
#define LORA_PREAMBLE_LENGTH                        8         /* Same for Tx and Rx */
#define LORA_SYMBOL_TIMEOUT                         5         /* Symbols */
#define LORA_FIX_LENGTH_PAYLOAD_ON                  false
#define LORA_IQ_INVERSION_ON                        false#elif (( USE_MODEM_LORA == 0 ) && ( USE_MODEM_FSK == 1 ))#define FSK_FDEV                                    25000     /* Hz */
#define FSK_DATARATE                                50000     /* bps */
#define FSK_BANDWIDTH                               50000     /* Hz */
#define FSK_PREAMBLE_LENGTH                         5         /* Same for Tx and Rx */
#define FSK_FIX_LENGTH_PAYLOAD_ON                   false#else
#error "Please define a modem in the compiler subghz_phy_app.h."
#endif /* USE_MODEM_LORA | USE_MODEM_FSK */#define PAYLOAD_LEN                                 64

【STM32WLE5之LoRa# 系列3、易智联LM401 评估板PingPong应用移植】

STM32WLE5之LoRa# 系列3、易智联LM401 评估板PingPong应用移植

前言

一、系统初始化SYS_APP.c文件

二、中断stm32wlxx_it.c文件

三、PingPong的应用程序

四、烧写测试

五、Lora相关参数配置

相关资源链接

【STM32WLE5之LoRa# 系列3、易智联LM401 评估板PingPong应用移植】相关推荐

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