112 lines
2.9 KiB
Arduino
112 lines
2.9 KiB
Arduino
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/*
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Name: SD_Update.ino
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Created: 12.09.2017 15:07:17
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Author: Frederik Merz <frederik.merz@novalight.de>
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Purpose: Update firmware from SD card
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Steps:
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1. Flash this image to the ESP32 an run it
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2. Copy update.bin to a SD-Card, you can basically
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compile this or any other example
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then copy and rename the app binary to the sd card root
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3. Connect SD-Card as shown in SD example,
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this can also be adapted for SPI
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3. After successfull update and reboot, ESP32 shall start the new app
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*/
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#include <Update.h>
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#include <FS.h>
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#include <SD.h>
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// perform the actual update from a given stream
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void performUpdate(Stream &updateSource, size_t updateSize) {
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if (Update.begin(updateSize)) {
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size_t written = Update.writeStream(updateSource);
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if (written == updateSize) {
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Serial.println("Written : " + String(written) + " successfully");
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}
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else {
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Serial.println("Written only : " + String(written) + "/" + String(updateSize) + ". Retry?");
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}
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if (Update.end()) {
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Serial.println("OTA done!");
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if (Update.isFinished()) {
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Serial.println("Update successfully completed. Rebooting.");
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}
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else {
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Serial.println("Update not finished? Something went wrong!");
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}
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}
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else {
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Serial.println("Error Occurred. Error #: " + String(Update.getError()));
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}
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}
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else
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{
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Serial.println("Not enough space to begin OTA");
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}
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}
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// check given FS for valid update.bin and perform update if available
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void updateFromFS(fs::FS &fs) {
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File updateBin = fs.open("/update.bin");
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if (updateBin) {
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if(updateBin.isDirectory()){
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Serial.println("Error, update.bin is not a file");
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updateBin.close();
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return;
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}
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size_t updateSize = updateBin.size();
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if (updateSize > 0) {
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Serial.println("Try to start update");
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performUpdate(updateBin, updateSize);
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}
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else {
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Serial.println("Error, file is empty");
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}
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updateBin.close();
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// whe finished remove the binary from sd card to indicate end of the process
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fs.remove("/update.bin");
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}
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else {
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Serial.println("Could not load update.bin from sd root");
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}
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}
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void setup() {
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uint8_t cardType;
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Serial.begin(115200);
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Serial.println("Welcome to the SD-Update example!");
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// You can uncomment this and build again
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// Serial.println("Update successfull");
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//first init and check SD card
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if (!SD.begin()) {
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rebootEspWithReason("Card Mount Failed");
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}
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cardType = SD.cardType();
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if (cardType == CARD_NONE) {
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rebootEspWithReason("No SD_MMC card attached");
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}else{
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updateFromFS(SD);
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}
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}
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void rebootEspWithReason(String reason){
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Serial.println(reason);
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delay(1000);
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ESP.restart();
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}
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//will not be reached
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void loop() {
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}
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