I hope this message finds you well.
I am currently working on a project involving UART communication between an STM32 Nucleo-F103RB board and a RAK3272S Breakout Board. My goal is to send AT commands from the Nucleo board and receive the response from the RAK3272S Breakout Board, displaying the result on the serial monitor.
I have written the following code, but I am facing an issue where the expected response from the RAK3272S Breakout Board is not being displayed. Below is the code I am using:
#include "main.h"
#include "string.h"
#include "stdio.h"
UART_HandleTypeDef huart2;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART2_UART_Init();
uint8_t at_command = "Hello\n";
uint8_t rx_buffer[256];
HAL_StatusTypeDef result;
while (1)
{
HAL_UART_Transmit(&huart2, at_command, sizeof(at_command), 1000);
memset(rx_buffer, 0, sizeof(rx_buffer));
result = HAL_UART_Receive(&huart2, rx_buffer, sizeof(rx_buffer), HAL_MAX_DELAY);
if (result == HAL_OK)
{
HAL_UART_Transmit(&huart2, rx_buffer, sizeof(rx_buffer), HAL_MAX_DELAY); // send received data
}
else if (result==HAL_TIMEOUT)
{
printf("Reception timed out\r\n");
}
else
{
printf("Error in reception\r\n");
}
HAL_Delay(3000);
}
}
Sure! Here’s how you can frame the email in English:
Subject: Assistance Needed with UART Communication Between Nucleo-F103RB and RAK3272S Breakout Board
Dear [Recipient’s Name],
I hope this email finds you well.
I am currently working on a project involving UART communication between an STM32 Nucleo-F103RB board and a RAK3272S Breakout Board. My goal is to send AT commands from the Nucleo board and receive the response from the RAK3272S Breakout Board, displaying the result on the serial monitor.
I have written the following code, but I am facing an issue where the expected response from the RAK3272S Breakout Board is not being displayed. Below is the code I am using:
코드 복사
#include "main.h"
#include "string.h"
#include "stdio.h"
UART_HandleTypeDef huart2;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART2_UART_Init();
uint8_t at_command = "Hello\n";
uint8_t rx_buffer[256];
HAL_StatusTypeDef result;
while (1)
{
HAL_UART_Transmit(&huart2, at_command, sizeof(at_command), 1000);
memset(rx_buffer, 0, sizeof(rx_buffer));
result = HAL_UART_Receive(&huart2, rx_buffer, sizeof(rx_buffer), HAL_MAX_DELAY);
if (result == HAL_OK)
{
HAL_UART_Transmit(&huart2, rx_buffer, sizeof(rx_buffer), HAL_MAX_DELAY); // send received data
}
else if (result == HAL_TIMEOUT)
{
printf("Reception timed out\r\n");
}
else
{
printf("Error in reception\r\n");
}
HAL_Delay(3000);
}
}
In this code, I am trying to send an AT command to the RAK3272S Breakout Board via UART2 and then receive and print the response. However, it seems that the response is not being captured or displayed correctly.
Could you please advise on what modifications or additional code might be necessary to correctly receive and display the AT command response from the RAK3272S Breakout Board? For example, if there is a specific format required for the AT command (e.g., `\r\n`) or any other considerations I should be aware of when parsing and transmitting data.
Thank you in advance for your help. I look forward to your guidance.