设计题
节点1
1.将时钟树频率设置成32MHz
2.将GPIO引脚做如下配置：
引脚功能
使能中断
打开串口通信2
3.生成工程代码
4.移植OLED、LoRa库文件
5.编写逻辑代码
Task_Main.h
#ifndef _TASK_MAIN_H_
#define _TASK_MAIN_H_
#include "main.h"
#include "stm32l0xx_hal.h"
#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#include "oled.h"
#include "sx127x_lora.h"
#include "usart.h"
void Task_BrdInit(void);
void Task_Main(void);
void key_fun(void);
void led_fun(void);
void oled_dis(void);
#endif
Task_Main.c
#include "Task_Main.h"
radio_handle_t handle;
#define FREQ 445000000L
bool key_flag = 0;
bool lora_flag = 0;
uint8_t LD2=0, LD3=0, LD5=0;
uint32_t count = 0;
uint8_t data[10] = {0};
uint8_t uart_recv_buf[256] = {0};
uint8_t ID = 97;
char lora_send_buf[23] = "ID:97,LD2:0,LD3:0,LD5:0";
int fputc(int ch, FILE *f)
{
while(((USART2->ISR)&(1<<7))==0);
USART2->TDR = (uint8_t)ch;
return ch;
}
void Task_Main(void)
{
/*按键检测*/
if(key_flag)
{
key_flag = 0;
key_fun();
}
/*指示灯状态检测*/
led_fun();
/*OLED显示更新*/
oled_dis();
}
void Task_BrdInit(void)
{
//OLED初始化
OLED_PowerControl(ENABLE);
HAL_Delay(200);
OLED_Init();
OLED_Clear();
OLED_ShowString(0, 0, (unsigned char *)" RX: ", 16);
OLED_ShowString(0, 2, (unsigned char *)" NUM:0 ", 16);
//LoRa初始化
spi_init();
zm4xx_pin_init();
handle = radio_zm4xx_inst_init(spi_recv_byte,spi_send_byte,zm4xx_rst_pin_set,zm4xx_sel_pin_set,HAL_Delay,delay_us);
if(handle != NULL)
{
if(RADIO_RET_OK == radio_freq_set(handle, FREQ))
{
}
radio_mode_set(handle, RX_MODE); //Receive Mode
}
__HAL_UART_ENABLE_IT(&huart2,UART_IT_RXNE);
HAL_UART_Receive_IT(&huart2, uart_recv_buf, 1);
data[0] = '\0';
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == GPIO_PIN_14)
{
key_flag = 1;
}
if(GPIO_Pin == GPIO_PIN_10)
{
lora_flag = 1;
}
}
void key_fun(void)
{
sprintf(lora_send_buf, "ID:%2d,LD2:%c,LD3:%c,LD5:%c", ID, LD2, LD3, LD5);
radio_buf_send(handle, (uint8_t *)lora_send_buf, 23);
radio_mode_set(handle, RX_MODE);
}
void led_fun(void)
{
if(LD2)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);
}
if(LD3)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
}
if(LD5)
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_RESET);
}
else
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_SET);
}
}
void oled_dis(void)
{
char dis1[16] = {0};
char dis2[16] = {0};
sprintf(dis1, " RX:%c", data[0]);
sprintf(dis2, " NUM:%d", count);
OLED_ShowString(0, 0, (uint8_t *)dis1, 16);
OLED_ShowString(0, 2, (uint8_t *)dis2, 16);
}
stm32l0xx_it.c
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
extern uint8_t data[10];
extern uint32_t count;
extern uint8_t LD2, LD3, LD5;
/* USER CODE END TD */
/**
* @brief This function handles USART2 global interrupt / USART2 wake-up interrupt through EXTI line 26.
*/
void USART2_IRQHandler(void)
{
/* USER CODE BEGIN USART2_IRQn 0 */
if(__HAL_UART_GET_FLAG(&huart2,UART_FLAG_RXNE)==SET)
{
data[0] = USART2->RDR;
switch(data[0])
{
case '@':
if(LD5)
{
LD5 = 0;
}
else
{
LD5 = 1;
}
count++;
break;
case '#':
if(LD2)
{
LD2 = 0;
}
else
{
LD2 = 1;
}
count++;
break;
case '$':
if(LD3)
{
LD3 = 0;
}
else
{
LD3 = 1;
}
count++;
break;
default:
HAL_UART_Transmit(&huart2, (uint8_t *)"error", 5, 50);
break;
}
}
/* USER CODE END USART2_IRQn 0 */
HAL_UART_IRQHandler(&huart2);
/* USER CODE BEGIN USART2_IRQn 1 */
/* USER CODE END USART2_IRQn 1 */
}
main.c
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "Task_Main.h"
/* USER CODE END Includes */
/* USER CODE BEGIN 2 */
Task_BrdInit();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
Task_Main();
}
/* USER CODE END 3 */
节点2
1.将时钟树频率设置成32MHz
2.将GPIO引脚做如下配置：
引脚功能
使能中断
3.生成工程代码
文章来源：https://www.toymoban.com/news/detail-401972.html
4.移植LoRa、OLED库文件
文章来源地址https://www.toymoban.com/news/detail-401972.html
5.编写逻辑代码
Task_Main.h
#ifndef _TASK_MAIN_H_
#define _TASK_MAIN_H_
#include "main.h"
#include "stm32l0xx_hal.h"
#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#include "oled.h"
#include "sx127x_lora.h"
#include "adc.h"
void Task_BrdInit(void);
void Task_Main(void);
void get_adc(void);
void oled_dis(void);
void oled_flush(void);
void lora_recv(void);
void get_cmd(void);
void led_fun(void);
#endif
Task_Main.c
#include "Task_Main.h"
radio_handle_t handle;
#define FREQ 445000000L
bool key_flag = 0;
bool lora_flag = 0;
bool oled_mode = 0;
uint32_t ADC_Value[20] = {0};
uint8_t LD2=0, LD3=0, LD5=0;
uint32_t num = 0;
uint8_t lora_recv_buf[256] = {0};
uint16_t lora_recv_buf_size = 0;
float vol1 = 3.1;
float vol2 = 0.8;
void Task_Main(void)
{
/*按键检测*/
if(key_flag)
{
key_flag = 0;
oled_mode = !oled_mode;
oled_flush();
}
/*ADC检测*/
get_adc();
/*oled显示刷新*/
oled_dis();
/*lora接收检测*/
if(lora_flag)
{
lora_flag = 0;
lora_recv();
}
/*led状态更新*/
led_fun();
}
void Task_BrdInit(void)
{
//OLED初始化
OLED_PowerControl(ENABLE);
HAL_Delay(200);
OLED_Init();
OLED_Clear();
OLED_ShowString(0, 0, (unsigned char *)" RP1:3.1V ", 16);
OLED_ShowString(0, 2, (unsigned char *)" RP2:0.8V ", 16);
//LoRa初始化
spi_init();
zm4xx_pin_init();
handle = radio_zm4xx_inst_init(spi_recv_byte,spi_send_byte,zm4xx_rst_pin_set,zm4xx_sel_pin_set,HAL_Delay,delay_us);
if(handle != NULL)
{
if(RADIO_RET_OK == radio_freq_set(handle, FREQ))
{
}
radio_mode_set(handle, RX_MODE); //Receive Mode
}
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == GPIO_PIN_14)
{
key_flag = 1;
}
if(GPIO_Pin == GPIO_PIN_10)
{
lora_flag = 1;
}
}
void get_adc(void)
{
HAL_ADC_Start_DMA(&hadc, ADC_Value, 10);
vol2 = ((ADC_Value[0]+ADC_Value[2]+ADC_Value[4]+ADC_Value[6]+ADC_Value[8])*3.3)/(4095*5);
vol1 = ((ADC_Value[1]+ADC_Value[3]+ADC_Value[5]+ADC_Value[7]+ADC_Value[9])*3.3)/(4095*5);
vol1 = (int)(vol1*10 + 0.5) * 0.1;
vol2 = (int)(vol2*10 + 0.5) * 0.1;
}
void oled_dis(void)
{
char dis_vol1[3] = {0};
char dis_vol2[3] = {0};
char dis_num[6] = {0};
if(!oled_mode)
{
sprintf(dis_vol1, "%3.1f", vol1);
sprintf(dis_vol2, "%3.1f", vol2);
OLED_ShowString(64, 0, (uint8_t *)dis_vol1, 16);
OLED_ShowString(64, 2, (uint8_t *)dis_vol2, 16);
}
else
{
sprintf(dis_num, "%d", num);
OLED_ShowString(72, 0, (uint8_t *)dis_num, 16);
if(LD2&LD3)
{
OLED_ShowString(64, 2, (unsigned char *)"ON ", 16);
}
else
{
OLED_ShowString(64, 2, (unsigned char *)"OFF", 16);
}
}
}
void oled_flush(void)
{
char oled_fl1[16] = {0};
char oled_fl2[16] = {0};
if(!oled_mode)
{
sprintf(oled_fl1, " RP1:%3.1fV ", vol1);
sprintf(oled_fl2, " RP1:%3.1fV ", vol2);
OLED_ShowString(0, 0, (uint8_t *)oled_fl1, 16);
OLED_ShowString(0, 2, (uint8_t *)oled_fl2, 16);
}
else
{
sprintf(oled_fl1, " NUM:%d", num);
OLED_ShowString(0, 0, (uint8_t *)" ", 16);
OLED_ShowString(0, 0, (uint8_t *)oled_fl1, 16);
if(LD2&LD3)
{
OLED_ShowString(0, 2, (unsigned char *)" STA:ON ", 16);
}
else
{
OLED_ShowString(0, 2, (unsigned char *)" STA:OFF ", 16);
}
}
}
void lora_recv(void)
{
int ret = -1;
ret = radio_buf_recv(handle, lora_recv_buf, &lora_recv_buf_size);
if((ret== RADIO_RET_OK)&&(lora_recv_buf_size==23))
{
get_cmd();
}
}
void get_cmd(void)
{
if((lora_recv_buf[3]=='9')&&(lora_recv_buf[4]=='7'))
{
LD2 = lora_recv_buf[10];
LD3 = lora_recv_buf[16];
LD5 = lora_recv_buf[22];
num++;
}
}
void led_fun(void)
{
if(LD2==1)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);
}
if(LD3==1)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
}
if(LD5==1)
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_RESET);
}
else
{
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_SET);
}
}
main.c
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "Task_Main.h"
/* USER CODE END Includes */
/* USER CODE BEGIN 2 */
Task_BrdInit();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
Task_Main();
}
/* USER CODE END 3 */
实验现象
Node_A
Node_B
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