ESP32 OAT
- 1、ESP32 实现OTA
- 2、ESP32 bin文件准备
- 3、python 服务器开启
- 4、效果显示
开发板:ESP32 TTGO
VS Code
想实现ESP32 HTTP OAT程序升级,奈何没有自己的服务器,便想到了开启Python自带的简易服务器,实现了OTA升级,虽然仅仅是局域网,但是如果搭配内网穿透那么就可以实现远程升级。
实现功能,首次开机之后连接服务器自动进行程序升级,升级成功之后,显示屏显示文字提示,之后如果要进行程序升级,通过按键触发的方式进行程序升级。因为OAT升级需要3个升级相关区,所以,升级的固件大小被限制在了Flash Size/3 范围。
1、ESP32 实现OTA
首先查看自己的IP:
自带的HTTP OTA程序,稍微进行了更改,需要注意下面部分
// This sketch provide the functionality of OTA Firmware Upgrade
#include "WiFi.h"
#include "HttpsOTAUpdate.h"
// This sketch shows how to implement HTTPS firmware update Over The Air.
// Please provide your WiFi credentials, https URL to the firmware image and the server certificate.
static const char *ssid = "tsy_B5AC58"; // your network SSID (name of wifi network)
static const char *password = "19980208"; // your network password
static const char *url = "http://192.168.xx.xx:8000/ESP32new.bin"; //state url of your firmware image IP 地址是自己的内网IP地址,
static const char *server_certificate = "-----BEGIN CERTIFICATE-----\n" \
"MIIEkjCCA3qgAwIBAgIQCgFBQgAAAVOFc2oLheynCDANBgkqhkiG9w0BAQsFADA/\n" \
"MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT\n" \
"DkRTVCBSb290IENBIFgzMB4XDTE2MDMxNzE2NDA0NloXDTIxMDMxNzE2NDA0Nlow\n" \
"SjELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUxldCdzIEVuY3J5cHQxIzAhBgNVBAMT\n" \
"GkxldCdzIEVuY3J5cHQgQXV0aG9yaXR5IFgzMIIBIjANBgkqhkiG9w0BAQEFAAOC\n" \
"AQ8AMIIBCgKCAQEAnNMM8FrlLke3cl03g7NoYzDq1zUmGSXhvb418XCSL7e4S0EF\n" \
"q6meNQhY7LEqxGiHC6PjdeTm86dicbp5gWAf15Gan/PQeGdxyGkOlZHP/uaZ6WA8\n" \
"SMx+yk13EiSdRxta67nsHjcAHJyse6cF6s5K671B5TaYucv9bTyWaN8jKkKQDIZ0\n" \
"Z8h/pZq4UmEUEz9l6YKHy9v6Dlb2honzhT+Xhq+w3Brvaw2VFn3EK6BlspkENnWA\n" \
"a6xK8xuQSXgvopZPKiAlKQTGdMDQMc2PMTiVFrqoM7hD8bEfwzB/onkxEz0tNvjj\n" \
"/PIzark5McWvxI0NHWQWM6r6hCm21AvA2H3DkwIDAQABo4IBfTCCAXkwEgYDVR0T\n" \
"AQH/BAgwBgEB/wIBADAOBgNVHQ8BAf8EBAMCAYYwfwYIKwYBBQUHAQEEczBxMDIG\n" \
"CCsGAQUFBzABhiZodHRwOi8vaXNyZy50cnVzdGlkLm9jc3AuaWRlbnRydXN0LmNv\n" \
"bTA7BggrBgEFBQcwAoYvaHR0cDovL2FwcHMuaWRlbnRydXN0LmNvbS9yb290cy9k\n" \
"c3Ryb290Y2F4My5wN2MwHwYDVR0jBBgwFoAUxKexpHsscfrb4UuQdf/EFWCFiRAw\n" \
"VAYDVR0gBE0wSzAIBgZngQwBAgEwPwYLKwYBBAGC3xMBAQEwMDAuBggrBgEFBQcC\n" \
"ARYiaHR0cDovL2Nwcy5yb290LXgxLmxldHNlbmNyeXB0Lm9yZzA8BgNVHR8ENTAz\n" \
"MDGgL6AthitodHRwOi8vY3JsLmlkZW50cnVzdC5jb20vRFNUUk9PVENBWDNDUkwu\n" \
"Y3JsMB0GA1UdDgQWBBSoSmpjBH3duubRObemRWXv86jsoTANBgkqhkiG9w0BAQsF\n" \
"AAOCAQEA3TPXEfNjWDjdGBX7CVW+dla5cEilaUcne8IkCJLxWh9KEik3JHRRHGJo\n" \
"uM2VcGfl96S8TihRzZvoroed6ti6WqEBmtzw3Wodatg+VyOeph4EYpr/1wXKtx8/\n" \
"wApIvJSwtmVi4MFU5aMqrSDE6ea73Mj2tcMyo5jMd6jmeWUHK8so/joWUoHOUgwu\n" \
"X4Po1QYz+3dszkDqMp4fklxBwXRsW10KXzPMTZ+sOPAveyxindmjkW8lGy+QsRlG\n" \
"PfZ+G6Z6h7mjem0Y+iWlkYcV4PIWL1iwBi8saCbGS5jN2p8M+X+Q7UNKEkROb3N6\n" \
"KOqkqm57TH2H3eDJAkSnh6/DNFu0Qg==\n" \
"-----END CERTIFICATE-----";
static HttpsOTAStatus_t otastatus;
void HttpEvent(HttpEvent_t *event)
{
switch(event->event_id) {
case HTTP_EVENT_ERROR:
Serial.println("Http Event Error");
break;
case HTTP_EVENT_ON_CONNECTED:
Serial.println("Http Event On Connected");
break;
case HTTP_EVENT_HEADER_SENT:
Serial.println("Http Event Header Sent");
break;
case HTTP_EVENT_ON_HEADER:
Serial.printf("Http Event On Header, key=%s, value=%s\n", event->header_key, event->header_value);
break;
case HTTP_EVENT_ON_DATA:
break;
case HTTP_EVENT_ON_FINISH:
Serial.println("Http Event On Finish");
break;
case HTTP_EVENT_DISCONNECTED:
Serial.println("Http Event Disconnected");
break;
}
}
void setup(){
Serial.begin(115200);
Serial.print("Attempting to connect to SSID: ");
WiFi.begin(ssid, password);
// attempt to connect to Wifi network:
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(1000);
}
Serial.print("Connected to ");
Serial.println(ssid);
HttpsOTA.onHttpEvent(HttpEvent);
Serial.println("Starting OTA");
HttpsOTA.begin(url, server_certificate);
Serial.println("Please Wait it takes some time ...");
}
void loop(){
otastatus = HttpsOTA.status();
if(otastatus == HTTPS_OTA_SUCCESS) {
Serial.println("Firmware written successfully. To reboot device, call API ESP.restart() or PUSH restart button on device");
} else if(otastatus == HTTPS_OTA_FAIL) {
Serial.println("Firmware Upgrade Fail");
}
delay(1000);
}
2、ESP32 bin文件准备
导出编译后的bin文件,导出的文件和代码在一个文件夹下面。
还是和前面一样的操作,需要修改IP地址,为自己的IP地址
需要升级的代码:
#include "WiFi.h"
#include "HttpsOTAUpdate.h"
#include <TFT_eSPI.h>
#define BUTTON 0 //定义按键
TFT_eSPI tft = TFT_eSPI(135, 240); //
int btnCick = false;
static const char *ssid = "tsy_B5AC58"; // your network SSID (name of wifi network)
static const char *password = "19980208"; // your network password
static const char *url = "http://192.168.xx.xxx:8000/ESP32new.bin"; //state url of your firmware image 自己IP地址
static const char *server_certificate = "-----BEGIN CERTIFICATE-----\n" \
"MIIEkjCCA3qgAwIBAgIQCgFBQgAAAVOFc2oLheynCDANBgkqhkiG9w0BAQsFADA/\n" \
"MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT\n" \
"DkRTVCBSb290IENBIFgzMB4XDTE2MDMxNzE2NDA0NloXDTIxMDMxNzE2NDA0Nlow\n" \
"SjELMAkGA1UEBhMCVVMxFjAUBgNVBAoTDUxldCdzIEVuY3J5cHQxIzAhBgNVBAMT\n" \
"GkxldCdzIEVuY3J5cHQgQXV0aG9yaXR5IFgzMIIBIjANBgkqhkiG9w0BAQEFAAOC\n" \
"AQ8AMIIBCgKCAQEAnNMM8FrlLke3cl03g7NoYzDq1zUmGSXhvb418XCSL7e4S0EF\n" \
"q6meNQhY7LEqxGiHC6PjdeTm86dicbp5gWAf15Gan/PQeGdxyGkOlZHP/uaZ6WA8\n" \
"SMx+yk13EiSdRxta67nsHjcAHJyse6cF6s5K671B5TaYucv9bTyWaN8jKkKQDIZ0\n" \
"Z8h/pZq4UmEUEz9l6YKHy9v6Dlb2honzhT+Xhq+w3Brvaw2VFn3EK6BlspkENnWA\n" \
"a6xK8xuQSXgvopZPKiAlKQTGdMDQMc2PMTiVFrqoM7hD8bEfwzB/onkxEz0tNvjj\n" \
"/PIzark5McWvxI0NHWQWM6r6hCm21AvA2H3DkwIDAQABo4IBfTCCAXkwEgYDVR0T\n" \
"AQH/BAgwBgEB/wIBADAOBgNVHQ8BAf8EBAMCAYYwfwYIKwYBBQUHAQEEczBxMDIG\n" \
"CCsGAQUFBzABhiZodHRwOi8vaXNyZy50cnVzdGlkLm9jc3AuaWRlbnRydXN0LmNv\n" \
"bTA7BggrBgEFBQcwAoYvaHR0cDovL2FwcHMuaWRlbnRydXN0LmNvbS9yb290cy9k\n" \
"c3Ryb290Y2F4My5wN2MwHwYDVR0jBBgwFoAUxKexpHsscfrb4UuQdf/EFWCFiRAw\n" \
"VAYDVR0gBE0wSzAIBgZngQwBAgEwPwYLKwYBBAGC3xMBAQEwMDAuBggrBgEFBQcC\n" \
"ARYiaHR0cDovL2Nwcy5yb290LXgxLmxldHNlbmNyeXB0Lm9yZzA8BgNVHR8ENTAz\n" \
"MDGgL6AthitodHRwOi8vY3JsLmlkZW50cnVzdC5jb20vRFNUUk9PVENBWDNDUkwu\n" \
"Y3JsMB0GA1UdDgQWBBSoSmpjBH3duubRObemRWXv86jsoTANBgkqhkiG9w0BAQsF\n" \
"AAOCAQEA3TPXEfNjWDjdGBX7CVW+dla5cEilaUcne8IkCJLxWh9KEik3JHRRHGJo\n" \
"uM2VcGfl96S8TihRzZvoroed6ti6WqEBmtzw3Wodatg+VyOeph4EYpr/1wXKtx8/\n" \
"wApIvJSwtmVi4MFU5aMqrSDE6ea73Mj2tcMyo5jMd6jmeWUHK8so/joWUoHOUgwu\n" \
"X4Po1QYz+3dszkDqMp4fklxBwXRsW10KXzPMTZ+sOPAveyxindmjkW8lGy+QsRlG\n" \
"PfZ+G6Z6h7mjem0Y+iWlkYcV4PIWL1iwBi8saCbGS5jN2p8M+X+Q7UNKEkROb3N6\n" \
"KOqkqm57TH2H3eDJAkSnh6/DNFu0Qg==\n" \
"-----END CERTIFICATE-----";
static HttpsOTAStatus_t otastatus;
void HttpEvent(HttpEvent_t *event)
{
switch(event->event_id) {
case HTTP_EVENT_ERROR:
Serial.println("Http Event Error");
break;
case HTTP_EVENT_ON_CONNECTED:
Serial.println("Http Event On Connected");
break;
case HTTP_EVENT_HEADER_SENT:
Serial.println("Http Event Header Sent");
break;
case HTTP_EVENT_ON_HEADER:
Serial.printf("Http Event On Header, key=%s, value=%s\n", event->header_key, event->header_value);
break;
case HTTP_EVENT_ON_DATA:
break;
case HTTP_EVENT_ON_FINISH:
Serial.println("Http Event On Finish");
break;
case HTTP_EVENT_DISCONNECTED:
Serial.println("Http Event Disconnected");
break;
}
}
//中断服务函数
void blink() {
btnCick = true;
HTTP_OTA(); //开启OTA服务
}
void button_init(){
pinMode(BUTTON, INPUT_PULLUP);//将中断的引脚设置为输入PULLUP模式
attachInterrupt(digitalPinToInterrupt(BUTTON), blink, CHANGE); //设置触发中断的模式和中断服务函数 CHANGE:引脚更改时触发
}
void setup(){
tft.init();
tft.setRotation(1);
tft.fillScreen(TFT_BLACK);
tft.setTextSize(2);
tft.setTextColor(TFT_GREEN);
tft.setCursor(0, 0);
tft.setTextDatum(MC_DATUM);
tft.drawString("Moonbeam ", tft.width()/2, tft.height()/2 );
Serial.begin(115200);
Serial.print("Attempting to connect to SSID: ");
WiFi.begin(ssid, password);
// attempt to connect to Wifi network:
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(1000);
}
Serial.print("Connected to ");
Serial.println(ssid);
button_init();//按键初始化
}
void HTTP_OTA(){
tft.fillScreen(TFT_BLACK);
tft.drawString("OTA... ", tft.width()/2, tft.height()/2 );
HttpsOTA.onHttpEvent(HttpEvent);
Serial.println("Starting OTA");
HttpsOTA.begin(url, server_certificate);
Serial.println("Please Wait it takes some time ...");
}
void loop(){
if(btnCick == true){
otastatus = HttpsOTA.status();
if(otastatus == HTTPS_OTA_SUCCESS) {
btnCick = false;
Serial.println("Firmware written successfully. To reboot device, call API ESP.restart() or PUSH restart button on device");
} else if(otastatus == HTTPS_OTA_FAIL) {
Serial.println("Firmware Upgrade Fail");
}
delay(1000);
}else{
tft.fillScreen(TFT_BLACK);
tft.drawString("Suss ", tft.width()/2, tft.height()/2 );
}
delay(1000);
}
3、python 服务器开启
在桌面自己重新创建一个test文件夹,充当服务器根目录。
之后将导出的bin 文件复制到文件夹下面,并修改好名字:
bin文件,文件名字必须和代码要访问的名字一样。
python 2.x开启自带简易服务器命令:
python -m SimpleHTTPServer
python 3.x开启自带简易服务器命令:
python -m http.server
为了让新建立的test文件夹作为服务的根目录,所以必须进入test文件夹下面,然后在执行开启服务器命令。
文件请求成功:
4、效果显示
正在升级:
升级成功: