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main.c
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main.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2020 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "../../Systick/systick.h"
#include "../../GSM/gsm.h"
#include "../../MQTT/MQTTClient.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
Network network;
GSMModuleState gsmModuleState;
Timer *mqttTimer = {0};
MQTTState mqttConnectionState;
MQTTClient mqttClient;
MQTTMessage mqttMessage = {0};
MQTTString mqttTopic;
MQTTPacket_connectData mqttPacketConnectData = MQTTPacket_connectData_initializer;
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
uint8_t apn_netw[30] = {"iot.safaricom.com"};
uint8_t apn_user[10] = {"none"};
uint8_t apn_pass[10] = {"none"};
int sent_failed_count = 0;
uint8_t tcp_connection_failed_count = 0;
uint32_t sim_disconnected = 0;
uint8_t command_failed_count = 0;
int sim_module_on_counter = 0;
const char *broker_url = "broker.africastalking.com";
int broker_port = 1883;
unsigned char mqtt_outbound_buffer[80];
unsigned char mqtt_inbound_buffer[80];
char mqttTopicName[100];
int publish_birth_message = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* 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 */
UART1FIFOInit();
UART2FIFOInit();
serialPrint("\nStarting up\r\n");
resetSIMModule(GSM_POWER_PORT, GSM_POWER_PIN, 3000);
MQTTClientInit(&mqttClient, &network, 3000, mqtt_outbound_buffer, sizeof(mqtt_outbound_buffer), mqtt_inbound_buffer, sizeof(mqtt_inbound_buffer));
mqttConnectionState = MQTTOff;
mqttPacketConnectData.MQTTVersion = 4;
mqttPacketConnectData.keepAliveInterval = 60;
mqttPacketConnectData.cleansession = 0;
mqttPacketConnectData.clientID.cstring = (char *)DEVICE_ID;
mqttPacketConnectData.username.cstring = (char *)AUTH_CREDENTIALS;
mqttPacketConnectData.password.cstring = (char *)MQTT_PASSWORD;
mqttPacketConnectData.will.topicName.cstring = (char *)DEVICE_WILL_TOPIC;
mqttPacketConnectData.will.message.cstring = (char *)WILL_MESSAGE;
mqttPacketConnectData.will.qos = MQTT_QOS;
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
if (gsmModuleState == Off)
{
serialPrint("\nSIM State is Off.Initializing\r\n");
if (initializeSIMModule())
{
gsmModuleState = On;
serialPrint("\nSIM Module initilized\r\n");
}
}
if (gsmModuleState == On)
{
serialPrint("\nSIM module is on\r\n");
sim_module_on_counter++;
if (sim_module_on_counter > 300)
{
serialPrint("\nReseting...\r\n");
resetSIMModule(GSM_POWER_PORT, GSM_POWER_PIN, 3000);
sim_module_on_counter = 0;
gsmModuleState = Off;
sent_failed_count = 0;
tcp_connection_failed_count = 0;
}
if (checkSIMNetworkState())
{
if (setupTCP())
{
gsmModuleState = Registered;
serialPrint("\nNetwork registered\r\n");
}
}
}
if (sent_failed_count > 10)
{
gsmModuleState = On;
sent_failed_count = 0;
tcp_connection_failed_count = 0;
serialPrint("\nGPRS Connection failed\r\n");
}
if (tcp_connection_failed_count > 20)
{
gsmModuleState = On;
tcp_connection_failed_count = 0;
sent_failed_count = 0;
serialPrint("\nTCP Connection failed\r\n");
}
if (gsmModuleState == Registered)
{
gsmKeepAlive();
getTCPStatus(300);
if (tcpConnectionObject.state == CONNECTED)
{
serialPrint("\nConnected to TCP Endpoint.\r\n");
cycle(&mqttClient, mqttTimer);
}
else if ((tcpConnectionObject.state == CLOSED) || (tcpConnectionObject.state == INITIAL))
{
uint8_t data_length;
uint8_t data_bucket[100];
data_length = snprintf((char *)data_bucket, 64, "AT+CIPSTART=0,\"TCP\",\"%s\",\"%i\"\r", broker_url, broker_port);
if (sendATCommand(data_bucket, data_length, "CONNECT OK", 300))
{
serialPrint("\nConnected to endpoint\r\n");
}
else
{
serialPrint("\nTCP Connection failed\r\n");
sent_failed_count++;
}
publish_birth_message = 1;
}
}
if (tcpConnectionObject.state == CONNECTED)
{
serialPrint("\nStill connected.\r\n");
MQTTConnect(&mqttClient, &mqttPacketConnectData);
char birthMessage[100];
mqttMessage.dup = 0;
mqttMessage.qos = MQTT_QOS;
mqttMessage.id = 0;
mqttMessage.retained = 0;
mqttMessage.payload = birthMessage;
sprintf(birthMessage, (char *)BIRTH_MESSAGE);
mqttMessage.payloadlen = strlen((char *)mqttMessage.payload) + 1;
if (publish_birth_message)
{
if (MQTTPublish(&mqttClient, (char *)DEVICE_BIRTH_TOPIC, &mqttMessage) == 0)
{
serialPrint("Birth message published \r\n");
sent_failed_count = 0;
publish_birth_message = 0;
}
else
{
serialPrint("Unable to publish birth message \r\n");
sent_failed_count++;
publish_birth_message = 1;
}
if (mqttConnectionState != MQTTSubscribed)
{
sprintf(mqttTopicName, (char *)DEVICE_DOWNSTREAM_TOPIC);
if (MQTTSubscribe(&mqttClient, mqttTopicName, MQTT_QOS, downStreamCommandHandler) == 0)
{
serialPrint("Subscribed to downstream topic \r\n");
mqttConnectionState = MQTTSubscribed;
}
else
{
serialPrint("Unable to subscribe to Topic \r\n");
}
}
}
}
else
{
serialPrint("\nDisconnected\r\n");
mqttConnectionState = MQTTOff;
}
/* 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};
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
void downStreamCommandHandler(MessageData *messageData)
{
serialPrint("Received a message %s : \r\n", messageData->message->payload);
serialPrint("Topic is %s \r\n", messageData->topicName);
memset((char *)messageData->message->payload, '\0', sizeof(uint8_t));
memset((char *)messageData->topicName, '\0', sizeof(uint8_t));
serialPrint("Sending message \r\n");
char dataMessage[100];
mqttMessage.dup = 0;
mqttMessage.qos = MQTT_QOS;
mqttMessage.id = 0;
mqttMessage.retained = 0;
mqttMessage.payload = dataMessage;
sprintf(dataMessage, "Done");
mqttMessage.payloadlen = strlen((char *)mqttMessage.payload) + 1;
if (MQTTPublish(&mqttClient, (char *)DEVICE_UPSTREAM_TOPIC, &mqttMessage) == 0)
{
serialPrint("Message published \r\n");
}
else
{
serialPrint("Unable to publish message \r\n");
sent_failed_count++;
}
}
int serialPrint(const char *string_format, ...)
{
if (DEVEL)
{
return printf(string_format);
}
else
{
return 0;
}
}
int __io_putchar(uint8_t ch)
{
if (ch)
{
UART1PutChar(ch);
return ch;
}
else
{
return 0;
}
}
/* 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 */
/* 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,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/