stm32 with simcom A7672S

[sreedharan1196]

#include "main.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)

#define GETCHAR_PROTOTYPE int __io_getchar(void)

UART_HandleTypeDef huart1;

UART_HandleTypeDef huart2;

PUTCHAR_PROTOTYPE

{

    HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, HAL_MAX_DELAY);

    return ch;

}

GETCHAR_PROTOTYPE

{

    uint8_t ch = 0;

    __HAL_UART_CLEAR_OREFLAG(&huart2);

    HAL_UART_Receive(&huart2, (uint8_t *)&ch, 1, HAL_MAX_DELAY);

    return ch;

}

int id = 212200;

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_USART1_UART_Init(void);

static void MX_USART2_UART_Init(void);

void parseCmd(char* command, int timeout);

int main(void)

{

  setvbuf(stdin, NULL, _IONBF, 0);

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();

  MX_USART1_UART_Init();

  MX_USART2_UART_Init();

  HAL_GPIO_WritePin(Enable_key_GPIO_Port, Enable_key_Pin, GPIO_PIN_SET);

  HAL_Delay(2000);

  HAL_GPIO_WritePin(Power_key_GPIO_Port, Power_key_Pin, GPIO_PIN_RESET);

  HAL_Delay(2000);

  printf("Sending AT commands...\n");

  while (1)

  {

  char strAT[50];

  parseCmd("AT\r\n", 1000); //Check AT

  parseCmd("ATE1\r\n", 1000);

  parseCmd("AT+CSQ\r\n", 1000);

  parseCmd("AT+CPIN?\r\n", 1000);

  parseCmd("AT+CREG=1\r\n", 1000);

  parseCmd("AT+CGREG?\r\n", 1000);

  parseCmd("AT+CGATT=1\r\n", 1000);

  parseCmd("AT+QIFGCNT=0\r\n", 1000);

  parseCmd("AT+QICSGP=1,\"WWW\",\"\",\"\"\r\n", 1000);

  parseCmd("AT+QIREGAPP\r\n", 1000);

  parseCmd("AT+QIACT\r\n", 1000);

  HAL_Delay(2000);

  sprintf(strAT, "AT+QHTTPURL=%d,%d", str_len, 180);

  //Serial.println(strAT);

  printf("The string %s",strAT);

  parseCmd(strAT, 1000);

  parseCmd(json_1, 3000);

  parseCmd("AT+QHTTPPOST=60", 3000);

  parseCmd("AT+QHTTPREAD", 3000);

  parseCmd("AT+QIDEACT", 1000);

void parseCmd(char* command, int timeout)

{

    HAL_Delay(timeout);

    char rxdata[300];

    memset(rxdata, 0, sizeof(rxdata));

    // Transmit command over UART1

    HAL_UART_Transmit(&huart1, (uint8_t*)command, strlen(command), timeout);

    // Receive response over UART1

    HAL_UART_Receive(&huart1, (uint8_t *)rxdata, sizeof(rxdata), timeout);

    // Transmit response over UART2

    HAL_UART_Transmit(&huart2, (uint8_t *)rxdata, strlen((char *)rxdata), timeout);

}

OUTPUT:

10:29:51.329 -> AT

10:29:51.329 -> OK

10:29:53.295 -> ATE1

10:29:53.295 -> OK

10:29:54.323 -> AT

i am using the above AT commands in simcom A7672S ,i am unable to get the proper response from the simcom, may, i know what the issues i am facing, Guide me with the issues i am facing her and help me to sort out this issues

[Techn]

Firstly chek if the module is able to receive call from another mobile. JUST call that number and check ring back tone. Connect the module to computer using a USB to ttl converter and chek if the module behaves properly.  ATD your number to initiate a  call from mobile.  AT+CSQ for signal strength etc..

[sreedharan1196]

thanks for the response, i clear that issues, now i am facing an issue with response received, i am able to get only the half the  response code from the simcom, what tha issues with the above code, help me to short out it

char ATcommand[200];

void parseCmd(char *command, int http_time)
{
char rxdata1[1000];
memset(rxdata1, 0, sizeof(rxdata1));

// printf("The AT : %s\r\n",command);

// Transmit command over UART1
HAL_UART_Transmit(&huart1, (uint8_t*)command, strlen(command),http_time);

// Receive response over UART1
HAL_UART_Receive(&huart1, (uint8_t *)rxdata1, sizeof(rxdata1),http_time);

// Transmit response over UART2
HAL_UART_Transmit(&huart2, (uint8_t *)rxdata1, strlen(rxdata1),100);

}

sprintf(ATcommand,"AT+HTTPPARA=\"URL\",\"http://iot.salieabs.in:5003/api/postDeviceDatadev=2122001&mr=108&warn=Done\"\r\n");
parseCmd(ATcommand,2000);

output:

11:21:33.298 -> ceData?dev=2122001&mr=108&warn=Done"
11:21:33.298 -> OK

[sreedharan1196]

verify with it, its working properly, for sms, and Call, also for all other AT commands, but the only issues is 

sprintf(ATcommand,"AT+HTTPPARA=\"URL\",\"http://iot.salieabs.in:5003/api/postDeviceDatadev=2122001&mr=108&warn=Done\"\r\n");

for the above AT commands i am getting only the below response, the response is ok thats not the issues, issue is for User interface i am not getting the full response 

output:

11:21:33.298 -> ceData?dev=2122001&mr=108&warn=Done"
11:21:33.298 -> OK

[Techn]

Looks like you have enabled local echo, other wise I guess the response will be "OK", what is the expected output?

[Andrew Neil]

On debugging serial comms:

https://www.avrfreaks.net/s/topic/a5C3l000000UaFXEA0/t153137?comment=P-1212903 

Please use this button to properly post source code:

#DebugSerialComms

[sreedharan1196]

CURRENT OUTPUT :

11:21:33.298 -> ceData?dev=2122001&mr=108&warn=Done"
11:21:33.230 -> OK

EXPECTED OUTPUT :

11:21:33.298 -> http://iot.salieabs.in:5003/api/postDeviceData?dev=2122001&mr=108&warn=Done
11:21:33.230 -> OK

[sreedharan1196]

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
const char apn[]  = "WWW";
char ATcommand[200];

char Warning_status[] = "Done";
char Count[] = "10";
char devID[] = "2122001";

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#define GETCHAR_PROTOTYPE int __io_getchar(void)

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;

/* USER CODE BEGIN PV */
PUTCHAR_PROTOTYPE
{
    HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
    return ch;
}
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_USART2_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

void  parseCmd(char *command, int delay)
{
	// HAL_UART_Init(&huart1);

	 char rxdata[100];
	 memset(rxdata, 0, sizeof(rxdata));
	 HAL_UART_Transmit(&huart1,(uint8_t*)command,strlen(command),delay);
     HAL_UART_Receive(&huart1,rxdata,sizeof(rxdata),delay);
     HAL_UART_Transmit(&huart2,rxdata,sizeof(rxdata),1000);

     //HAL_UART_DeInit(&huart1);
}

void ExecuteHTTPGetRequest()
{
	 parseCmd("AT\r\n",2000);
	 parseCmd("AT+CSQ\r\n",2000);
	 parseCmd("AT+CREG?\r\n",2000);
	 parseCmd("AT+CGREG?\r\n",5000);
	 parseCmd("AT+CEREG=1\r\n",5000);
	 parseCmd("AT+CPSI?\r\n",2000);
	 parseCmd("AT+CGACT=1,1\r\n",10000);
	 parseCmd("AT+CGATT=1\r\n",2000);
	 parseCmd("AT+CGREG?\r\n",2000);
	 sprintf(ATcommand,"AT+CGDCONT=1,\"IP\",\"%s\"\r\n",apn);
	 parseCmd(ATcommand,4000);
	 parseCmd("AT+HTTPINIT\r\n", 12000);
	 parseCmd("AT+HTTPPARA=\"URL\",\"http://iot.salieabs.in:5003/api/postDeviceData?dev=2122001&mr=108&warn=Done\"\r\n",12000);
	 parseCmd("AT+HTTPACTION=1\r\n",10000);
	 parseCmd("AT+HTTPTERM\r\n",5000);
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

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

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */
  HAL_GPIO_WritePin(Enable_key_GPIO_Port, Enable_key_Pin, GPIO_PIN_SET);
  HAL_Delay(2000);
  HAL_GPIO_WritePin(Power_key_GPIO_Port, Power_key_Pin, GPIO_PIN_RESET);
  HAL_Delay(2000);

  printf("Initializing HTTP connection...\n");

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  ExecuteHTTPGetRequest();
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Configure the main internal regulator output voltage
  */
  __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_MSI;
  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  RCC_OscInitStruct.MSICalibrationValue = 0;
  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;
  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_MSI;
  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();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2;
  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
  PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief USART1 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  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;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
  huart1.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

/**
  * @brief USART2 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_USART2_UART_Init(void)
{

  /* USER CODE BEGIN USART2_Init 0 */

  /* USER CODE END USART2_Init 0 */

  /* USER CODE BEGIN USART2_Init 1 */

  /* USER CODE END USART2_Init 1 */
  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;
  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART2_Init 2 */

  /* USER CODE END USART2_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(Enable_key_GPIO_Port, Enable_key_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(Power_key_GPIO_Port, Power_key_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin : Enable_key_Pin */
  GPIO_InitStruct.Pin = Enable_key_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(Enable_key_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : Power_key_Pin */
  GPIO_InitStruct.Pin = Power_key_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(Power_key_GPIO_Port, &GPIO_InitStruct);

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @PAram  file: pointer to the source file name
  * @PAram  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

[Andrew Neil]

---

@sreedharan1196 wrote:

  parseCmd("AT\r\n", 1000); //Check AT

---

Note that the standard AT command terminator is just CR - not CRLF.

---

@sreedharan1196 wrote:

10:29:53.295 -> ATE1

10:29:53.295 -> OK

---

Why are you turning Echo on?

This means that the modem will send back every single character you send to it.

How are you observing this "output" ?

[Andrew Neil]

---

@sreedharan1196 wrote:

CURRENT OUTPUT :

11:21:33.298 -> ceData?dev=2122001&mr=108&warn=Done"
11:21:33.230 -> OK

EXPECTED OUTPUT :

11:21:33.298 -> http://iot.salieabs.in:5003/api/postDeviceData?dev=2122001&mr=108&warn=Done
11:21:33.230 -> OK

---

So you're missing the first half  (~40 characters) of that string.

Are your buffers big enough?

Again, how are you observing this "output"?