- Fri Jul 10, 2015 10:55 am
#22929
@SwiCago - your captive portal code may be a good start for him.
Moderator: igrr
- Fri Jul 10, 2015 11:36 am
#22930
Hi Chris,
I threw this together bases on my Captive portal code and the neopixel sample code. I wrote it in a text editor at work, so I have not yet compiled it or tested it...but this should get you in the right direction
Edit: updated code below. Had 2 typos and then compiled...But have not tested on ESP yet
I threw this together bases on my Captive portal code and the neopixel sample code. I wrote it in a text editor at work, so I have not yet compiled it or tested it...but this should get you in the right direction
Edit: updated code below. Had 2 typos and then compiled...But have not tested on ESP yet
Code: Select all
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <NeoPixelBus.h>
#define pixelCount 4 //number of pixels in RGB strip
NeoPixelBus strip = NeoPixelBus(pixelCount, 0); //GPIO 0
const char* ssid = "MY_ROUTER";
const char* password = "MY_PASSWD";
IPAddress apIP(192, 168, 1, 1); //FOR AP mode
IPAddress netMsk(255,255,255,0); //FOR AP mode
const char* html = "<html><head><style></style></head>"
"<body><form action='/' method='GET'><input type='color' name='color' value='#000000'/>"
"<input type='submit' name='submit' value='Update RGB Strip'/></form></body></html>";
ESP8266WebServer server(80);
void setup() {
Serial.begin(115200);
strip.Begin();
strip.Show();
//***************WIFI client************************//
WiFi.begin(ssid, password);
Serial.print("\n\r \n\rWorking to connect");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
//***************WIFI ACCESS POINT******************//
// WiFi.mode(WIFI_AP);
// WiFi.softAPConfig(apIP,apIP,netMsk);
// WiFi.softAP(ssid,password); //leave password away for open AP
// Serial.print("SSID: ");
// Serial.println(ssid);
// Serial.print("IP address: ");
// Serial.println(WiFi.softAPIP());
//**************************************************//
server.on("/", handle_root); //root page
server.onNotFound(handleNotFound); //page if not found
server.begin();
Serial.println("HTTP server started");
}
void loop() {
server.handleClient();
}
void handleNotFound() {
Serial.print("\t\t\t\t URI Not Found: ");
Serial.println(server.uri());
server.send ( 200,"text/plain","URI Not Found" );
}
void handle_root() {
String toSend = html;
if (server.hasArg("color")) {
String rgbStr = server.arg("color"); //get value from html5 color element
toSend.replace("#000000",rgbStr); //replace our default black with new color
int rgb[3]; //define rgb pointer for ws2812
getRGB(rgbStr,rgb); //convert RGB string to rgb ints
updateEntireStrip(rgb[0], rgb[1], rgb[2]); //update strip
}
server.send(200, "text/html", toSend);
delay(100);
}
void getRGB(String hexRGB, int *rgb) {
int rgbNum = (int)strtol(&hexRGB[1],NULL,16);
rgb[0] = rgbNum >> 16; //red
rgb[1] = rgbNum >> 8 & 0xFF; //blue
rgb[2] = rgbNum & 0xFF; //green
}
void updateEntireStrip(int red, int blue, int green) {
RgbColor rgb = RgbColor(red, blue, green);
for(int i=0; i < pixelCount; i++) {
strip.SetPixelColor(i,rgb);
}
strip.Show();
}
- Fri Jul 10, 2015 6:54 pm
#22964
So the command "strtol" which is used to convert a hex string into an inter crashes the ESP. I trie multiple variations of "strtol", using pointers, char buffers, longs int longs, ints. At least 10 variations from the interwebs and none seem to have worked so far.
The following also crashes the ESP ... LOL .. but no worries I'll figure something out for you
The following also crashes the ESP ... LOL .. but no worries I'll figure something out for you
Code: Select all
void loop() {
const char* string = "0x4d14";
int val = (int)strtol(string,NULL,16);
Serial.println(val);
delay( 1000 );
//server.handleClient();
}
Last edited by SwiCago on Fri Jul 10, 2015 7:50 pm, edited 1 time in total.
- Fri Jul 10, 2015 7:39 pm
#22968
Hi Chris,
Here is a working sample...The only thing I could not test is the actual ws2812 update, but the color from web and converting it to numbers that the NeoPixelBus understands works.
I had to make my own hex string to int converter, because of strtol causing the esp to crash.
Here is a working sample...The only thing I could not test is the actual ws2812 update, but the color from web and converting it to numbers that the NeoPixelBus understands works.
I had to make my own hex string to int converter, because of strtol causing the esp to crash.
Code: Select all
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <NeoPixelBus.h>
#define pixelCount 4 //number of pixels in RGB strip
NeoPixelBus strip = NeoPixelBus(pixelCount, 0); //GPIO 0
const char* ssid = "MY_ROUTER";
const char* password = "MY_PASSWD";
IPAddress apIP(192, 168, 1, 1); //FOR AP mode
IPAddress netMsk(255,255,255,0); //FOR AP mode
const char* html = "<html><head><style></style></head>"
"<body><form action='/' method='GET'><input type='color' name='color' value='#000000'/>"
"<input type='submit' name='submit' value='Update RGB Strip'/></form></body></html>";
ESP8266WebServer server(80);
void setup() {
Serial.begin(115200);
strip.Begin();
strip.Show();
//***************WIFI client************************//
WiFi.begin(ssid, password);
Serial.print("\n\r \n\rWorking to connect");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
//***************WIFI ACCESS POINT******************//
/* WiFi.mode(WIFI_AP);
WiFi.softAPConfig(apIP,apIP,netMsk);
WiFi.softAP(ssid);//,password); //leave password away for open AP
Serial.print("SSID: ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.softAPIP()); */
//**************************************************//
server.on("/", handle_root); //root page
server.onNotFound(handleNotFound); //page if not found
server.begin();
Serial.println("HTTP server started");
}
void loop() {
server.handleClient();
}
void handleNotFound() {
Serial.print("\t\t\t\t URI Not Found: ");
Serial.println(server.uri());
server.send ( 200,"text/plain","URI Not Found" );
}
void handle_root() {
String toSend = html;
if (server.hasArg("color")) {
String rgbStr = server.arg("color"); //get value from html5 color element
rgbStr.replace("%23","#"); //%23 = # in URI
toSend.replace("#000000",rgbStr); //replace our default black with new color, so when page loads our new color shows
int rgb[3]; //define rgb pointer for ws2812
getRGB(rgbStr,rgb); //convert RGB string to rgb ints
updateEntireStrip(rgb[0], rgb[1], rgb[2]); //update strip
}
server.send(200, "text/html", toSend);
delay(100);
}
void getRGB(String hexRGB, int *rgb) {
hexRGB.toUpperCase();
char c[7];
hexRGB.toCharArray(c,8);
rgb[0] = convertToInt(c[1],c[2]); //red
rgb[1] = convertToInt(c[3],c[4]); //green
rgb[2] = convertToInt(c[5],c[6]); //blue
}
int convertToInt(char upper,char lower)
{
int uVal = (int)upper;
int lVal = (int)lower;
uVal = uVal >64 ? uVal - 55 : uVal - 48;
uVal = uVal << 4;
lVal = lVal >64 ? lVal - 55 : lVal - 48;
return uVal + lVal;
}
void updateEntireStrip(int red, int blue, int green) {
RgbColor rgb = RgbColor(red, blue, green);
for(int i=0; i < pixelCount; i++) {
strip.SetPixelColor(i,rgb);
}
strip.Show();
}
