main21.c File Reference

AWS RSA Example.

Copyright (c) 2017-2019 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"
#include "main.h"
#include "driver/include/m2m_wifi.h"
#include "socket/include/socket.h"
#include "AWS_SDK/aws_iot_src/utils/aws_iot_log.h"
#include "AWS_SDK/aws_iot_src/utils/aws_iot_version.h"
#include "AWS_SDK/aws_iot_src/protocol/mqtt/aws_iot_mqtt_interface.h"
#include "aws_iot_config.h"

Macros
#define	CLIENT_ID   "WINC3400_Pub"
#define	PUBLISH_BUTTON   SW0_PIN
#define	PUBLISH_CHANNEL   "WINC3400_IOT/sub"
#define	PUBLISHER
#define	STRING_EOL   "\r\n"
#define	STRING_HEADER
#define	SUBSCRIBE_CHANNEL   "WINC3400_IOT/pub"

Functions
static int32_t	button_press_duration (bool current_button_state)
static void	configure_console (void)
	Configure UART console. More...
static void	disconnectCallbackHandler (void)
int	main (void)
	Main application function. More...
static int32_t	MQTTcallbackHandler (MQTTCallbackParams params)
void	SysTick_Handler (void)
	SysTick handler used to measure precise delay. More...
static void	wifi_cb (uint8_t u8MsgType, void *pvMsg)
	Callback to get the Wi-Fi status update. More...

Variables
static struct usart_module	cdc_uart_module
	UART module for debug. More...
static bool	gbConnectedWifi = false
	Wi-Fi status variable. More...
char	HostAddress [255] = AWS_IOT_MQTT_HOST
	Default MQTT HOST URL is pulled from the aws_iot_config.h. More...
volatile uint32_t	ms_ticks = 0
	SysTick counter to avoid busy wait delay. More...
uint32_t	port = AWS_IOT_MQTT_PORT
	Default MQTT port is pulled from the aws_iot_config.h. More...
uint32_t	publishCount = 0
	This parameter will avoid infinite loop of publish and exit the program after certain number of publishes. More...
static bool	receivedTime = false
static bool	toggle = false

#define CLIENT_ID   "WINC3400_Pub"

Referenced by main().

#define PUBLISH_BUTTON   SW0_PIN

Referenced by main().

#define PUBLISH_CHANNEL   "WINC3400_IOT/sub"

Referenced by main().

#define PUBLISHER

#define STRING_EOL   "\r\n"

#define STRING_HEADER

Value:

"-- AWS IoT Demo --"STRING_EOL \
    "-- "BOARD_NAME " --"STRING_EOL \
    "-- Compiled: "__DATE__ " "__TIME__ " --"STRING_EOL

Referenced by main().

#define SUBSCRIBE_CHANNEL   "WINC3400_IOT/pub"

Referenced by main().

static int32_t button_press_duration ( bool  current_button_state )

static

References ms_ticks.

Referenced by main().

static void configure_console ( void  )

static

Configure UART console.

References usart_config::baudrate, cdc_uart_module, EDBG_CDC_MODULE, EDBG_CDC_SERCOM_MUX_SETTING, EDBG_CDC_SERCOM_PINMUX_PAD0, EDBG_CDC_SERCOM_PINMUX_PAD1, EDBG_CDC_SERCOM_PINMUX_PAD2, EDBG_CDC_SERCOM_PINMUX_PAD3, usart_config::mux_setting, usart_config::pinmux_pad0, usart_config::pinmux_pad1, usart_config::pinmux_pad2, usart_config::pinmux_pad3, usart_enable(), and usart_get_config_defaults().

Referenced by main().

static void disconnectCallbackHandler ( void  )

static

References aws_iot_is_autoreconnect_enabled(), aws_iot_mqtt_attempt_reconnect(), NONE_ERROR, and RECONNECT_SUCCESSFUL.

Referenced by main().

int main

(

void

)

Main application function.

Application entry point.

Returns

program return value.

References aws_iot_mqtt_autoreconnect_set_status(), aws_iot_mqtt_connect(), aws_iot_mqtt_publish(), aws_iot_mqtt_subscribe(), aws_iot_mqtt_yield(), button_press_duration(), CLIENT_ID, configure_console(), delay_init(), delay_ms, disconnectCallbackHandler(), MQTTConnectParams::disconnectHandler, gbConnectedWifi, HostAddress, MQTTConnectParams::isCleansession, MQTTConnectParams::isSSLHostnameVerify, MQTTConnectParams::isWillMsgPresent, MQTTConnectParams::KeepAliveInterval_sec, M2M_SUCCESS, M2M_WIFI_CH_ALL, m2m_wifi_connect(), m2m_wifi_handle_events(), m2m_wifi_init(), MAIN_WLAN_AUTH, MAIN_WLAN_PSK, MAIN_WLAN_SSID, MQTTPublishParams::MessageParams, MQTTSubscribeParams::mHandler, MQTT_3_1_1, MQTTcallbackHandler(), MQTTConnectParams::mqttCommandTimeout_ms, MQTTConnectParamsDefault, MQTTMessageParamsDefault, MQTTPublishParamsDefault, MQTTSubscribeParamsDefault, MQTTConnectParams::MQTTVersion, NETWORK_ATTEMPTING_RECONNECT, nm_bsp_init(), NONE_ERROR, NULL, MQTTMessageParams::PayloadLen, MQTTConnectParams::pClientID, MQTTConnectParams::pDeviceCertLocation, MQTTConnectParams::pDevicePrivateKeyLocation, tstrWifiInitParam::pfAppWifiCb, MQTTConnectParams::pHostURL, MQTTConnectParams::port, port, port_pin_get_input_level(), MQTTMessageParams::pPayload, MQTTConnectParams::pRootCALocation, MQTTSubscribeParams::pTopic, MQTTPublishParams::pTopic, PUBLISH_BUTTON, PUBLISH_CHANNEL, publishCount, MQTTMessageParams::qos, MQTTSubscribeParams::qos, QOS_0, receivedTime, RECONNECT_SUCCESSFUL, STRING_HEADER, SUBSCRIBE_CHANNEL, system_cpu_clock_get_hz(), system_init(), MQTTConnectParams::tlsHandshakeTimeout_ms, and wifi_cb().

static int32_t MQTTcallbackHandler ( MQTTCallbackParams  params )

static

References LED_0_PIN, MQTTCallbackParams::MessageParams, NULL, MQTTMessageParams::PayloadLen, port_pin_set_output_level(), MQTTMessageParams::pPayload, MQTTCallbackParams::pTopicName, toggle, and MQTTCallbackParams::TopicNameLen.

Referenced by main().

void SysTick_Handler

(

void

)

SysTick handler used to measure precise delay.

References ms_ticks.

static void wifi_cb ( uint8_t  u8MsgType, void *  pvMsg  )

static

Callback to get the Wi-Fi status update.

Parameters

[in]	u8MsgType	type of Wi-Fi notification. Possible types are: M2M_WIFI_RESP_CON_STATE_CHANGED M2M_WIFI_REQ_DHCP_CONF
[in]	pvMsg	A pointer to a buffer containing the notification parameters (if any). It should be casted to the correct data type corresponding to the notification type.

References gbConnectedWifi, gethostbyname(), HostAddress, M2M_WIFI_CH_ALL, m2m_wifi_connect(), M2M_WIFI_CONNECTED, M2M_WIFI_DISCONNECTED, M2M_WIFI_REQ_DHCP_CONF, M2M_WIFI_RESP_CON_STATE_CHANGED, M2M_WIFI_RESP_GET_SYS_TIME, MAIN_WLAN_AUTH, MAIN_WLAN_PSK, MAIN_WLAN_SSID, receivedTime, and tstrM2mWifiStateChanged::u8CurrState.

Referenced by main().

struct usart_module cdc_uart_module

static

UART module for debug.

Referenced by configure_console().

bool gbConnectedWifi = false

static

Wi-Fi status variable.

Referenced by main(), and wifi_cb().

char HostAddress[255] = AWS_IOT_MQTT_HOST

Default MQTT HOST URL is pulled from the aws_iot_config.h.

Referenced by main(), and wifi_cb().

volatile uint32_t ms_ticks = 0

SysTick counter to avoid busy wait delay.

TLS read functionality.

Referenced by button_press_duration(), getTimeInMillis(), and SysTick_Handler().

uint32_t port = AWS_IOT_MQTT_PORT

Default MQTT port is pulled from the aws_iot_config.h.

Referenced by main(), system_pinmux_pin_get_mux_position(), system_pinmux_pin_set_config(), and system_pinmux_pin_set_input_sample_mode().

uint32_t publishCount = 0

This parameter will avoid infinite loop of publish and exit the program after certain number of publishes.

Referenced by main().

bool receivedTime = false

static

Referenced by main(), and wifi_cb().

bool toggle = false

static

Referenced by MQTTcallbackHandler().