WINC1500 Send Email Example.

#include "asf.h"
#include "main.h"
#include "bsp/include/nm_bsp.h"
#include "driver/include/m2m_wifi.h"
#include "socket/include/socket.h"

Macros
#define	STRING_EOL "\r\n"

#define	STRING_HEADER

Functions
static void	close_socket (void)
	Close socket function. More...

static void	configure_console (void)
	Configure UART console. More...

void	ConvertToBase64 (char pcOutStr, const char pccInStr, int iLen)

static void	generateBase64Key (char input, char basekey)
	Generates Base64 Key needed for authentication. More...

int	main (void)
	Main application function. More...

static void	resolve_cb (uint8_t *hostName, uint32_t hostIp)
	Callback function of IP address. More...

static void	retry_smtp_server (void)
	Retry SMTP server function. More...

static int8_t	smtpConnect (void)
	Creates and connects to an unsecure socket to be used for SMTP. More...

static void	smtpSendRecv (long socket, char cmd, char cmdparam, char *respBuf)
	Sends an SMTP command and provides the server response. More...

static int8_t	smtpStateHandler (void)
	SMTP state handler. More...

static void	socket_cb (SOCKET sock, uint8_t u8Msg, void *pvMsg)
	Callback function of TCP client socket. 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...

static bool	gbHostIpByName = false
	Get host IP status variable. More...

char	gcHandlerBuffer [MAIN_SMTP_BUF_LEN]
	Handler buffer definition. More...

char	gcPasswordBasekey [128]
	Password basekey definition. More...

char	gcSendRecvBuffer [MAIN_SMTP_BUF_LEN]
	Send and receive buffer definition. More...

char	gcUserBasekey [128]
	Username basekey definition. More...

int8_t	gs8EmailError = MAIN_EMAIL_ERROR_NONE
	SMTP email error information. More...

uint32_t	gu32HostIp = 0
	IP address of host. More...

uint8_t	gu8RetryCount = 0
	Retry count. More...

uint8_t	gu8SmtpStatus = SMTP_INIT
	SMTP information. More...

uint8_t	gu8SocketStatus = SocketInit

static SOCKET	tcp_client_socket = -1
	TCP client socket handler. More...

#define STRING_EOL "\r\n"

#define STRING_HEADER

Value:

"-- WINC1500 send email example --"STRING_EOL \
    "-- "BOARD_NAME " --"STRING_EOL \
    "-- Compiled: "__DATE__ " "__TIME__ " --"STRING_EOL

Referenced by main().

static void close_socket ( void )

static

Close socket function.

Returns: None.

References close(), and tcp_client_socket.

Referenced by main(), and retry_smtp_server().

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().

void ConvertToBase64	(	char *	pcOutStr,
		const char *	pccInStr,
		int	iLen
	)

References g_ccB64Tbl.

Referenced by generateBase64Key().

static void generateBase64Key	(	char *	input,
		char *	basekey
	)

static

Generates Base64 Key needed for authentication.

Parameters

[in]	input	is the string to be converted to base64.
[in]	basekey1	is the base64 converted output.

Returns: None.

References ConvertToBase64().

Referenced by socket_cb().

int main ( void )

Main application function.

Initialize system, UART console, network then start function of SMTP email client.

Returns: Program return value.

References close_socket(), configure_console(), gbConnectedWifi, gbHostIpByName, gs8EmailError, gu8RetryCount, gu8SocketStatus, LED_0_PIN, M2M_SUCCESS, M2M_WIFI_CH_ALL, m2m_wifi_connect(), m2m_wifi_handle_events(), m2m_wifi_init(), MAIN_EMAIL_ERROR_INIT, MAIN_EMAIL_ERROR_NONE, MAIN_RETRY_COUNT, MAIN_WLAN_AUTH, MAIN_WLAN_PSK, MAIN_WLAN_SSID, nm_bsp_init(), NULL, tstrWifiInitParam::pfAppWifiCb, port_pin_set_output_level(), registerSocketCallback(), resolve_cb(), retry_smtp_server(), smtpConnect(), smtpStateHandler(), SOCK_ERR_NO_ERROR, socket_cb(), SocketComplete, SocketConnect, SocketError, SocketInit, socketInit(), SocketWaiting, STRING_HEADER, system_init(), tcp_client_socket, and wifi_cb().

static void resolve_cb	(	uint8_t *	hostName,
		uint32_t	hostIp
	)

static

Callback function of IP address.

Parameters

[in]	hostName	Domain name.
[in]	hostIp	Server IP.

Returns: None.

References gbHostIpByName, gu32HostIp, and IPV4_BYTE.

Referenced by main().

static void retry_smtp_server ( void )

static

Retry SMTP server function.

Returns: None.

References close_socket(), delay_ms, gbHostIpByName, gu8SmtpStatus, gu8SocketStatus, m2m_wifi_disconnect(), MAIN_WAITING_TIME, SMTP_INIT, and SocketInit.

Referenced by main().

static int8_t smtpConnect ( void )

static

Creates and connects to an unsecure socket to be used for SMTP.

Parameters

[in] None.

Returns: SOCK_ERR_NO_ERROR if success, -1 if socket create error, SOCK_ERR_INVALID if socket connect error.

References _htons, AF_INET, close(), connect(), gu32HostIp, MAIN_GMAIL_HOST_PORT, in_addr::s_addr, sockaddr_in::sin_addr, sockaddr_in::sin_family, sockaddr_in::sin_port, SOCK_ERR_INVALID, SOCK_ERR_NO_ERROR, SOCK_STREAM, socket(), SOCKET_FLAGS_SSL, and tcp_client_socket.

Referenced by main().

static void smtpSendRecv	(	long	socket,
		char *	cmd,
		char *	cmdparam,
		char *	respBuf
	)

static

Sends an SMTP command and provides the server response.

Parameters

[in]	socket	is the socket descriptor to be used for sending.
[in]	cmd	is the string of the command.
[in]	cmdpara	is the command parameter.
[in]	respBuf	is a pointer to the SMTP response from the server.