OTAImageUpdate.cpp File Reference

#include "OTAImageUpdate.h"
#include <WiFi.h>
#include <Update.h>

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Functions
String	getHeaderValue (String header, String headerName)
	Utility to extract header value from headers. More...
void	execOTA ()
	OTA Logic. More...
void	performOTAUpdate (char *hostname, char *httpAddress)
	connects to host and grabs the http file and tries to update the binary (OTA) More...
void	performOTAUpdateSimple ()
	retrieves from constant location More...

Variables
WiFiClient	_client
long	_contentLength = 0
bool	_isValidContentType = false
String	_hostIP = "KnowledgeShark.org"
int	_port = 80
	Non https. For HTTPS 443. As of today, HTTPS doesn't work. More...
String	_binName = "/OTA/OTA_Board/ESP_IOT.ino.esp32.bin"
	location of bin file More...
char	_binAddress [100]
	address of bin string More...

Function Documentation

execOTA()

void execOTA

(

)

OTA Logic.

Connect to S3

Get the contents of the bin file

Response Structure HTTP/1.1 200 OK x-amz-id-2: NVKxnU1aIQMmpGKhSwpCBh8y2JPbak18QLIfE+OiUDOos+7UftZKjtCFqrwsGOZRN5Zee0jpTd0= x-amz-request-id: 2D56B47560B764EC Date: Wed, 14 Jun 2017 03:33:59 GMT Last-Modified: Fri, 02 Jun 2017 14:50:11 GMT ETag: "d2afebbaaebc38cd669ce36727152af9" Accept-Ranges: bytes Content-Type: application/octet-stream Content-Length: 357280 Server: AmazonS3

{{BIN FILE CONTENTS}}

Check if the HTTP Response is 200 else break and Exit Update

extract headers here Start with content length

Next, the content type

check contentLength and content type

Check if there is enough to OTA Update

restart .. which will ony effect if not rebooting..

Definition at line 58 of file OTAImageUpdate.cpp.

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getHeaderValue()

String getHeaderValue	(	String	header,
		String	headerName
	)

Utility to extract header value from headers.

Definition at line 51 of file OTAImageUpdate.cpp.

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performOTAUpdate()

void performOTAUpdate	(	char *	hostname,
		char *	httpAddress
	)

connects to host and grabs the http file and tries to update the binary (OTA)

connects to host and grabs the http file and tries to update the binary (OTA) kind = esp32, m5

Definition at line 245 of file OTAImageUpdate.cpp.

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performOTAUpdateSimple()

void performOTAUpdateSimple

(

)

retrieves from constant location

Definition at line 261 of file OTAImageUpdate.cpp.

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Variable Documentation

_binAddress

char _binAddress[100]

address of bin string

Definition at line 241 of file OTAImageUpdate.cpp.

_binName

String _binName = "/OTA/OTA_Board/ESP_IOT.ino.esp32.bin"

location of bin file

Definition at line 42 of file OTAImageUpdate.cpp.

_client

WiFiClient _client

OTAImageUpdate Code from AWS_S3_OTA_Update, it only uses HTTP (not https) https://www.tutorialspoint.com/esp32_for_iot/performing_the_over_the_air_update_of_esp32_firmware.htm

Definition at line 21 of file OTAImageUpdate.cpp.

_contentLength

long _contentLength = 0

Definition at line 25 of file OTAImageUpdate.cpp.

_hostIP

String _hostIP = "KnowledgeShark.org"

String _hostIP = "konacurrents.com"; // Host => bucket-name.s3.region.amazonaws.com host IP address (cannot be https)

Definition at line 31 of file OTAImageUpdate.cpp.

_isValidContentType

bool _isValidContentType = false

Definition at line 26 of file OTAImageUpdate.cpp.

_port

int _port = 80

Non https. For HTTPS 443. As of today, HTTPS doesn't work.

Definition at line 33 of file OTAImageUpdate.cpp.