ESP8266 WiFi

Macros
#define	MODE_STATION   1
#define	MODE_SOFTAP   2
#define	MODE_SOFTAP_STATION   3

Functions
void	ESP8266_ConnectNetwork (char *network_ssid, char *network_pass, uint8_t flash_settings)
void	ESP8266_SetMode (uint8_t mode, uint8_t flash_settings)
void	ESP8266_Reset (void)
void	ESP8266_HTTP_GET (char *hostname, int port, char *uri, char *payload) int ESP8266_CalcLength(const char *s)

Detailed Description

@ brief Simplex communication with ESP8266 WiFi module using AT commands UART must be initialized and configured to use backchannel before using functions from this module.

ESP8266_UART must be defined in project_settings.h

Created on: March 18, 2019 Author: Stephen Glass

Example psuedo code: (Note the task scheduelr may need to be used to add delays between sending commands to ESP8266 because the device still needs to process it) void main() { UART_Init(); ESP8266_Reset(); ESP8266_SetMode(MODE_STATION, 0); ESP8266_ConnectNetwork("Rowan_IoT", "", 0); ESP8266_HTTP_GET("127.0.0.1", 80, "/api/callback.php", "?data=10"); }

Macro Definition Documentation

#define MODE_SOFTAP   2

#define MODE_SOFTAP_STATION   3

#define MODE_STATION   1

Function Documentation

void ESP8266_ConnectNetwork	(	char *	network_ssid,
		char *	network_pass,
		uint8_t	flash_settings
	)

Configure the WiFi network

Parameters

network_ssid	name of the network SSID
network_pass	password of the network
flash_settings	flash the settings to the esp8266 (0, no; 1, flash) Setting to flash will automatically connect every time ESP8266 is powered on

void ESP8266_HTTP_GET	(	char *	hostname,
		int	port,
		char *	uri,
		char *	payload
	)		const

Performs a HTTP GET request on a specified URL with payload

Parameters

hostname	hostname in format of IP address or URL (e.g 127.0.0.1, localhost)
port	port of the HTTP server (default 80 on most servers)
uri	uri of the server (e.g: /api/test.php)
payload	payload to send (e.g: ?data=1&id=5) Helper function to calculate length of string
s	string to calculate length

void ESP8266_Reset

(

void

)

Resets the ESP8266

void ESP8266_SetMode	(	uint8_t	mode,
		uint8_t	flash_settings
	)

Set the mode of the ESP8266

Parameters

mode	mode to set
flash_settings	flash the setting to esp8266 (0, no; 1, flash) Setting to flash will automatically enable this mode every time ESP8266 is powered on