Unable to run input cature mode with SPI - interrupt
I am Trying to run a web-server on AVR ATmega8 using ENC28J60 module. For this I got sample code from here. This code is working fine. Here is my code:-
#define F_CPU 8000000UL
#include <avr/io.h>
#include <string.h>
#include "ip_arp_udp_tcp.h"
#include "enc28j60.h"
#include "timeout.h"
#include "avr_compat.h"
#include "net.h"
// please modify the following two lines. mac and ip have to be unique
// in your local area network. You can not have the same numbers in
// two devices:
static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24};
// how did I get the mac addr? Translate the first 3 numbers into ascii is: TUX
static uint8_t myip[4] = {192,168,24,39};
// listen port for www
#define MYWWWPORT 80
//// listen port for udp
#define MYUDPPORT 1200
//
#define BUFFER_SIZE 450
static uint8_t buf[BUFFER_SIZE+1];
int main(void)
{
uint16_t plen;
uint16_t dat_p;
uint8_t i=0;
uint8_t payloadlen=0;
_delay_loop_1(50);
/*initialize enc28j60*/
enc28j60Init(mymac);
enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
_delay_loop_1(50); // 12ms
enc28j60PhyWrite(PHLCON,0x476);
_delay_loop_1(50); // 12ms
//init the ethernet/ip layer:
init_ip_arp_udp_tcp(mymac,myip,MYWWWPORT);
while(1)
{
// get the next new packet:
plen = enc28j60PacketReceive(BUFFER_SIZE, buf);
/*plen will ne unequal to zero if there is a valid * packet (without crc error) */
if(plen==0)
{
continue;
}
// arp is broadcast if unknown but a host may also
// verify the mac address by sending it to
// a unicast address.
if(eth_type_is_arp_and_my_ip(buf,plen))
{
make_arp_answer_from_request(buf);
continue;
}
// check if ip packets (icmp or udp) are for us:
if(eth_type_is_ip_and_my_ip(buf,plen)==0)
{
continue;
}
if(buf[IP_PROTO_P]==IP_PROTO_ICMP_V && buf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V)
{
// a ping packet, let's send pong
make_echo_reply_from_request(buf,plen);
continue;
}
// tcp port www start, compare only the lower byte
if (buf[IP_PROTO_P]==IP_PROTO_TCP_V&&buf[TCP_DST_PORT_H_P]==0&&buf[TCP_DST_PORT_L_P]==MYWWWPORT)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_SYN_V)
{
make_tcp_synack_from_syn(buf);
// make_tcp_synack_from_syn does already send the syn,ack
continue;
}
if (buf[TCP_FLAGS_P] & TCP_FLAGS_ACK_V)
{
init_len_info(buf); // init some data structures
// we can possibly have no data, just ack:
dat_p=get_tcp_data_pointer();
if (dat_p==0)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_FIN_V)
{
// finack, answer with ack
make_tcp_ack_from_any(buf);
}
// just an ack with no data, wait for next packet
continue;
}
if (strncmp("GET ",(char *)&(buf[dat_p]),4)!=0)
{
plen=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1>200 OK</h1>"));
}
else
{
// Web Code
plen=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<p>PLANETCAST MEDIA SERVICES LTD</p>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<body>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<input type=\"text\" id=\"myurl\" name=\"url\" placeholder=\"Enter Url\"/><br>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<input type=\"submit\" id=\"clickbutton\" name=\"Click Here\" />"));
plen=fill_tcp_data_p(buf,plen,PSTR("<script type=\"text/javascript\">"));
plen=fill_tcp_data_p(buf,plen,PSTR("document.getElementById(\"clickbutton\").onclick = function(){"));
plen=fill_tcp_data_p(buf,plen,PSTR("var url = document.getElementById(\"myurl\").value;"));
plen=fill_tcp_data_p(buf,plen,PSTR("location.href=url;"));
plen=fill_tcp_data_p(buf,plen,PSTR("};"));
plen=fill_tcp_data_p(buf,plen,PSTR("</script>"));
plen=fill_tcp_data_p(buf,plen,PSTR("</body"));
}
make_tcp_ack_from_any(buf); // send ack for http get
make_tcp_ack_with_data(buf,plen); // send data
continue;
}
}
// udp interface:
if (buf[IP_PROTO_P]==IP_PROTO_UDP_V)
{
payloadlen=buf[UDP_LEN_L_P]-UDP_HEADER_LEN;
// the received command has to start with t and be 4 char long
// e.g "test\0"
if (buf[UDP_DATA_P]=='t' && payloadlen==5)
{
make_udp_reply_from_request(buf,"hello",6,MYUDPPORT);
}
}
}
return (0);
}
Now I want to add Input Capture Mode , so I add interrupt header file then start Input capture mode in main() and then introduce sei() function. Now My code look like this:-
#define F_CPU 8000000UL
#include <avr/io.h>
#include <string.h>
#include "ip_arp_udp_tcp.h"
#include "enc28j60.h"
#include "timeout.h"
#include "avr_compat.h"
#include "net.h"
#include <avr/interrupt.h>
// please modify the following two lines. mac and ip have to be unique
// in your local area network. You can not have the same numbers in
// two devices:
static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x24};
// how did I get the mac addr? Translate the first 3 numbers into ascii is: TUX
static uint8_t myip[4] = {192,168,24,39};
// listen port for www
#define MYWWWPORT 80
//// listen port for udp
#define MYUDPPORT 1200
//
#define BUFFER_SIZE 450
static uint8_t buf[BUFFER_SIZE+1];
int main(void)
{
TCCR1A = 0;
TCCR1B = (1<<ICNC1)|(1<<ICES1)|(1<<CS11);
TIMSK = (1<<TICIE1);
TCNT1 = 0;
sei();
uint16_t plen;
uint16_t dat_p;
uint8_t i=0;
uint8_t payloadlen=0;
_delay_loop_1(50);
/*initialize enc28j60*/
enc28j60Init(mymac);
enc28j60clkout(2); // change clkout from 6.25MHz to 12.5MHz
_delay_loop_1(50); // 12ms
enc28j60PhyWrite(PHLCON,0x476);
_delay_loop_1(50); // 12ms
//init the ethernet/ip layer:
init_ip_arp_udp_tcp(mymac,myip,MYWWWPORT);
while(1)
{
// get the next new packet:
plen = enc28j60PacketReceive(BUFFER_SIZE, buf);
/*plen will ne unequal to zero if there is a valid * packet (without crc error) */
if(plen==0)
{
continue;
}
// arp is broadcast if unknown but a host may also
// verify the mac address by sending it to
// a unicast address.
if(eth_type_is_arp_and_my_ip(buf,plen))
{
make_arp_answer_from_request(buf);
continue;
}
// check if ip packets (icmp or udp) are for us:
if(eth_type_is_ip_and_my_ip(buf,plen)==0)
{
continue;
}
if(buf[IP_PROTO_P]==IP_PROTO_ICMP_V && buf[ICMP_TYPE_P]==ICMP_TYPE_ECHOREQUEST_V)
{
// a ping packet, let's send pong
make_echo_reply_from_request(buf,plen);
continue;
}
// tcp port www start, compare only the lower byte
if (buf[IP_PROTO_P]==IP_PROTO_TCP_V&&buf[TCP_DST_PORT_H_P]==0&&buf[TCP_DST_PORT_L_P]==MYWWWPORT)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_SYN_V)
{
make_tcp_synack_from_syn(buf);
// make_tcp_synack_from_syn does already send the syn,ack
continue;
}
if (buf[TCP_FLAGS_P] & TCP_FLAGS_ACK_V)
{
init_len_info(buf); // init some data structures
// we can possibly have no data, just ack:
dat_p=get_tcp_data_pointer();
if (dat_p==0)
{
if (buf[TCP_FLAGS_P] & TCP_FLAGS_FIN_V)
{
// finack, answer with ack
make_tcp_ack_from_any(buf);
}
// just an ack with no data, wait for next packet
continue;
}
if (strncmp("GET ",(char *)&(buf[dat_p]),4)!=0)
{
plen=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1>200 OK</h1>"));
}
else
{
// Web Code
plen=fill_tcp_data_p(buf,0,PSTR("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<p>PLANETCAST MEDIA SERVICES LTD</p>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<body>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<input type=\"text\" id=\"myurl\" name=\"url\" placeholder=\"Enter Url\"/><br>"));
plen=fill_tcp_data_p(buf,plen,PSTR("<input type=\"submit\" id=\"clickbutton\" name=\"Click Here\" />"));
plen=fill_tcp_data_p(buf,plen,PSTR("<script type=\"text/javascript\">"));
plen=fill_tcp_data_p(buf,plen,PSTR("document.getElementById(\"clickbutton\").onclick = function(){"));
plen=fill_tcp_data_p(buf,plen,PSTR("var url = document.getElementById(\"myurl\").value;"));
plen=fill_tcp_data_p(buf,plen,PSTR("location.href=url;"));
plen=fill_tcp_data_p(buf,plen,PSTR("};"));
plen=fill_tcp_data_p(buf,plen,PSTR("</script>"));
plen=fill_tcp_data_p(buf,plen,PSTR("</body"));
}
make_tcp_ack_from_any(buf); // send ack for http get
make_tcp_ack_with_data(buf,plen); // send data
continue;
}
}
// udp interface:
if (buf[IP_PROTO_P]==IP_PROTO_UDP_V)
{
payloadlen=buf[UDP_LEN_L_P]-UDP_HEADER_LEN;
// the received command has to start with t and be 4 char long
// e.g "test\0"
if (buf[UDP_DATA_P]=='t' && payloadlen==5)
{
make_udp_reply_from_request(buf,"hello",6,MYUDPPORT);
}
}
}
return (0);
}
ISR(TIMER1_CAPT_vect)
{
//do something
}
Now when I run my code , I got no webpage on my browser. So, I comment out sei() function. After this my code works fine. So, I check SPI settings in enc28j60.c. As per my knowledge SPI is not running on interrupt , so it shouldn't be affected by sei(). Here is my SPi settings in enc28j60.c:-
#define ENC28J60_CONTROL_PORT PORTB
#define ENC28J60_CONTROL_DDR DDRB
#define ENC28J60_CONTROL_CS 2
#define ENC28J60_CONTROL_SO 4
#define ENC28J60_CONTROL_SI 3
#define ENC28J60_CONTROL_SCK 5
void enc28j60Init(uint8_t* macaddr)
{
// initialize I/O
// ss as output:
ENC28J60_CONTROL_DDR |= 1<<ENC28J60_CONTROL_CS;
CSPASSIVE; // ss=0
//
ENC28J60_CONTROL_DDR |= 1<<ENC28J60_CONTROL_SI | 1<<ENC28J60_CONTROL_SCK; // mosi, sck output
cbi(ENC28J60_CONTROL_DDR,ENC28J60_CONTROL_SO); // MISO is input
//
cbi(ENC28J60_CONTROL_PORT,ENC28J60_CONTROL_SI); // MOSI low
cbi(ENC28J60_CONTROL_PORT,ENC28J60_CONTROL_SCK); // SCK low
So, can anyone tell me why my SPI mode is geting effected by sei() function and how get rid of this.
I have not read all your code but i think you are all time in interrupt. In normal mode the timer are not reset when it reach the top. Try with TCNT1 = 0; in the ISR.
Related
Problem arduino uno sketch and sim 800l modem
The code works ok on the serial monitor and I can ses in the serial monitor that the code makes the AT command for sending a reply by sms but it doesn't send and I can't control the sketch by SMS.
I can't figure out what goes wrong. It's a long sketch so I try to set the parts of the code where the code is for the modem.
#include <SoftwareSerial.h>
const uint8_t rxPin = 2;
const uint8_t txPin = 3;
SoftwareSerial sim800(2, 3); // SIM800L rx og tx til pin 2 and 3
#define sim800 Serial
void setup() {
Serial.begin(9600);
while (!Serial) {
; // Wait for serial monitor to open
}
sim800.begin(9600);
while (!sim800) {
; // Wait for SIM800L module to start
}
sim800.println("AT");
delay(1000);
// Read response from SIM800L module
while (sim800.available()) {
String response = sim800.readString();
Serial.println(response);
if (sim800.available())
{
String message = sim800.readString();
Serial.println(message);
message.trim();
message.toUpperCase();
if(message.indexOf("ARM") >= 0) // ARM DISARM COMMAND
{
if(message.indexOf("DISARM") == 0)
{
armed = false;
send_SMS("DISARMED!");
void send_SMS(const char *message)
{
sim800.println("AT+CMGF=1"); // Set SMS mode to text
delay(100);
sim800.println("AT+CMGS=\"+123456789\""); // telefon nummer
sim800.println(message);
sim800.println((char)26); // send SMS
I can't figure out where the error is.
Updated--Issue with sensors connecting to Arduino Uno via Atlas Scientific hardware serial port expander 8:1
Hardware connection and also programming issue with sensors (GPS NEO-6M module, ESP8266 etc.) connecting to Arduino Uno via Atlas Scientific serial port expander 8:1
Hardware:
Arduino Uno
Atlas Scientific serial port expander 8:1
GPS NEO-6M module
ESP8266 Wifi module
Arduino Uno to GPS module we are able to get latitude and longitude values, below is the code for the same:
#include <SoftwareSerial.h>
#include <TinyGPS.h>
long lat, lon;
SoftwareSerial gpsSerial(6, 5);
TinyGPS gps;
void setup() {
Serial.begin(9600);
gpsSerial.begin(9600);
}
void loop() {
while (gpsSerial.available()) {
if (gps.encode(gpsSerial.read())) {
gps.get_position(&lat, &lon);
Serial.print("Position:");
Serial.print("lat:"); Serial.print(lat); Serial.print(" ");
Serial.print("long:"); Serial.println(lon);
}
}
}
Our requirement is that we have four sensors that need to be connected to an Arduino Uno. For that we used an Atlas Scientific hardware serial port expander 8:1.
Below is the code which we are working to get the GPS coordinates:
#include <SoftwareSerial.h> // we have to include the SoftwareSerial library, or else we can't use it
#define rx 8 // define what pin rx is going to be
#define tx 9 // define what pin tx is going to be
SoftwareSerial mySerial(rx, tx); //define how the soft serial port is going to work
int s1 = 6; // Arduino pin 6 to control pin S1
int s2 = 5; // Arduino pin 5 to control pin S2
int s3 = 4; // Arduino pin 4 to control pin S3
const uint8_t module_count = 8; // number of modules connected to the serial port expander 1=Port1, 2= Port2 and so on
void setup() {
Serial.begin(115200); // Set the hardware serial port to 115200
mySerial.begin(9600); // Set baud rate for the software serial port to 9600
pinMode(s1, OUTPUT); // Set the digital pin as output
pinMode(s2, OUTPUT); // Set the digital pin as output
pinMode(s3, OUTPUT); // Set the digital pin as output
}
void loop() {
if (Serial.available()) { // if we get data from the computer
char c = Serial.read();
for (uint8_t i = 1; i <= module_count; i++) { // loop through the modules
Serial.print("Connecting to Port: ");
Serial.println(i);
open_port(i); // open the port
mySerial.print(c); // print character to port
delay(100); // insert a delay to wait for the reply
if (mySerial.available()) { // print reply to serial monitor
while (mySerial.available()) {
Serial.println(mySerial.read());
if (gps.encode(mySerial.read())) {
gps.get_position(&lat, &lon);
Serial.print("Position:");
Serial.print("lat:"); Serial.print(lat);
Serial.print(" ");
Serial.print("long:"); Serial.println(lon);
}
}
}
else {
Serial.print("No response received");
}
Serial.println();
}
}
}
void open_port(uint8_t _port) { //this function controls what port is opened on the serial port expander
if (_port < 1 || module_count > 8)_port = 1; //if the value of the port is within range (1-8) then open that port. If it's not in range set it to port 1
uint8_t port_bits = _port - 1;
digitalWrite(s1, bitRead(port_bits, 0)); //Here we have two commands combined into one.
digitalWrite(s2, bitRead(port_bits, 1)); //The digitalWrite command sets a pin to 1/0 (high or low)
digitalWrite(s3, bitRead(port_bits, 2)); //The bitRead command tells us what the bit value is for a specific bit location of a number
delay(2); //this is needed to make sure the channel switching event has completed
}
Kindly guide us in sorting the issue; we are having an issue with gps.encode(mySerial.read()).
Thank you in advance.
Issue was sorted out by ourselves,
Below is the working code for the same ,
#include <SoftwareSerial.h> //we have to include the SoftwareSerial library, or else we can't use it
#define rx 3 //define what pin rx is going to be
#define tx 2 //define what pin tx is going to be
SoftwareSerial mySerial(rx, tx); //define how the soft serial port is going to work
#include <TinyGPS.h>
#include <NMEAGPS.h>
int s1 = 6; //Arduino pin 6 to control pin S1
int s2 = 5; //Arduino pin 5 to control pin S2
int s3 = 4; //Arduino pin 4 to control pin S3
int i;
const uint8_t module_count = 8; //number of modules connected to the serial port expander 1=Port1, 2= Port2 and so on
TinyGPS gps;
gps_fix fix;
long lat, lon;
void setup() {
Serial.begin(9600); //Set the hardware serial port to 115200
mySerial.begin(9600); //set baud rate for the software serial port to 9600
pinMode(s1, OUTPUT); //Set the digital pin as output
pinMode(s2, OUTPUT); //Set the digital pin as output
pinMode(s3, OUTPUT); //Set the digital pin as output
}
void loop() {
if (Serial.available()) { //if we get data from the computer
char c = Serial.read();
for (uint8_t i = 1; i <= module_count; i++) { // loop through the modules
Serial.print("Connecting to Port: ");
Serial.println(i);
open_port(i); // open the port
Serial.print(c); //print character to port
delay(1000); //insert a delay to wait for the reply
//Serial.println(Serial.available());
if (Serial.available()) {
//Serial.println(gps.available(Serial));//print reply to serial monitor
while (Serial.available()) {
//Serial.write(mySerial.read());
//Serial.write(gps.encode(mySerial.read()));
//Serial.println(mySerial.available());
//Serial.println(gps.encode(mySerial.read()));
if (mySerial.available()>0) {
//Serial.println(gps.encode(mySerial.read()));
char d = byte(mySerial.read());
//Serial.println(d);
if (gps.encode(d)) {
gps.get_position(&lat, &lon);
Serial.print("Position:");
Serial.print("lat:"); Serial.print(lat); Serial.print(" ");
Serial.print("long:"); Serial.println(lon);
}
}
}
Serial.println();
}
}
}
}
void open_port(uint8_t _port) { //this function controls what port is opened on the serial port expander
if (_port < 1 || module_count > 8)_port = 1; //if the value of the port is within range (1-8) then open that port. If it's not in range set it to port 1
uint8_t port_bits = _port - 1;
digitalWrite(s1, bitRead(port_bits, 0)); //Here we have two commands combined into one.
digitalWrite(s2, bitRead(port_bits, 1)); //The digitalWrite command sets a pin to 1/0 (high or low)
digitalWrite(s3, bitRead(port_bits, 2)); //The bitRead command tells us what the bit value is for a specific bit location of a number
delay(2); //this is needed to make sure the channel switching event has completed
}
UART sending wrong characters on pic18
I'm trying to simply send characters trough my UART Interface by calling the funktion: UART_Write_Text("hello");
this is the code executed in the the uart.c file:
void UART_Init(void)
{
//115200bps deafult value for RN4678
BRGH = 0; //Setting High Baud Rat
BRG16 = 0; //8-Bit mode
SPBRG = 8; //Writing SPBRG Register
TXSTAbits.SYNC = 0; //Setting Asynchronous Mode, ie UART
RCSTAbits.SPEN = 1; //Enables Serial Port
RCSTAbits.CREN = 1; //Enables Reception
TXSTAbits.TXEN = 1; //Enables Transmission
}
/******************************************************************************/
//-----UART write byte
/******************************************************************************/
void UART_Write(char data)
{
while(!TRMT);
TXREG = data;
}
/******************************************************************************/
//-----UART check tx queue
/******************************************************************************/
char UART_TX_Empty(void)
{
return TRMT;
}
/******************************************************************************/
//-----UART write string
/******************************************************************************/
void UART_Write_Text(char *text)
{
for(int i=0; text[i]!='\0' || text[i] !=0x00; i++){
UART_Write(text[i]);
}
UART_Write('\n');
}
/******************************************************************************/
//-----UART data ready to read
/******************************************************************************/
char UART_Data_Ready(void)
{
return RCIF;
}
/******************************************************************************/
//-----UART read byte
/******************************************************************************/
char UART_Read(void)
{
while(!RCIF);
return RCREG;
}
/******************************************************************************/
//-----UART read string
/******************************************************************************/
void UART_Read_Text(char *Output, unsigned int length)
{
unsigned int i;
for(int i=0;i<length;i++)
Output[i] = UART_Read();
}
Now when I'm debugging it, I see that it writes the wright charakters into the TXREG. At the end it sended the following characters: 'h', 'e', 'l', 'l', 'o', '\n'.
I send them to the bluetooth module RN4678 with a baud rate of 115200bps which is also the default baud rate of the BT module. However when I read the sended character on my phone with a Bluetooth terminal i get only some characters wright and the other ones are questionmarks, so it doesn't recognise them (not always the same character unrecognised).
I already experimented with the baud rate, but it looks like its the right value I writed into the SPBRG.
I'm also polling the TRMT so there shouldn't be any collisions...
Someone knows what I'm doing wrong?
#include "Configuration_bits.h"
#include <xc.h>
#include <stdio.h>
#include <p18f67k22.h>
#include <string.h>
#include <stdlib.h>
#define _XTAL_FREQ 16000000
void UART_Init_1(){
TRISCbits.TRISC6=1; // TX1 Pin-31
TRISCbits.TRISC7=1; // RX1 Pin-32
RC1IE=1;
SPBRG1=34; // Baud Rate 115200
BAUDCON1bits.BRG16=1;
TXSTA1bits.BRGH=1;
//TXSTA 1 Register
TXSTA1bits.TX9=0; // 8-bit transmission
TXSTA1bits.TXEN=0;
TXSTA1bits.TXEN=1; // Transmit is enabled
TXSTA1bits.SYNC=0; // Asynchronous mode
TXSTA1bits.TRMT=1; // Transmit Shift Register Status bit
//RXSTA 1 Register
RCSTA1bits.SPEN=1; // Serial Port Enable bit
RCSTA1bits.RX9=0; // 8-bit reception
RCSTA1bits.CREN=1; // Continuous Receive Enable bit
}
void UART_Tx_1(unsigned char z[])
{
unsigned int uart_tx1=0;
while(z[uart_tx1]!='\0')
{
while(!TX1IF);
TXREG1=z[uart_tx1];
uart_tx1++;
}
}
void UART_Rx_1()
{
string_rx1[uart_rx1]=RCREG1;
uart_rx1++;
}
void interrupt ISR(void)
{
if(RC1IF && RC1IE) // UART_1
{
}
}
void main(void)
{
System_Initialization();
UART_Init_1();
while(1)
{
UART_Tx_1("HELLO\r\n"); // Transmit Hello
}
}
ESP8266 Sniffing and sending Mac address
I'm trying to make my ESP8266 sniffing nearby devices, then posting them by with a HTTP request. With purpose is to record when my roommate and I are at home. Then in the future, trigger certain tasks like turning on/off the lights if we're home or not. I don't care at all about the packets content just the mac addresses.
So fare I've found this, script that prints out the mac adresses for nearby devices, created by kalanda: esp8266-sniffer.
Aswell as this HTTP posting script ESP8266 http get requests.
I've tried to combine those two and in the callback function make the ESP send the found data, but doesn't look like the ESP establish the wifi connection.
I tried using different WIFI modes: STATION_MODE, SOFTAP_MODE, STATIONAP_MODE. None of them worked for both sniffing and http request at the same time. I know that the STATIONAP_MODE do have some flaws. What I've found is that it has to switch both somehow, but unfortunately I'm not a ESP expert and don't know how this can be done.
Here is my code(srry for any rubbish coding on my side):
#include <ESP8266WiFi.h> // added this
#include <ESP8266HTTPClient.h> // added this
const char* ssid = "**********"; // Wifi SSID
const char* password = "**********"; // Wifi Password
String main_url = "http://*********.php?"; // Website url to post the information
String temp_url = ""; // Url with information
extern "C" {
#include <user_interface.h>
}
#define DATA_LENGTH 112
#define TYPE_MANAGEMENT 0x00
#define TYPE_CONTROL 0x01
#define TYPE_DATA 0x02
#define SUBTYPE_PROBE_REQUEST 0x04
struct RxControl {
signed rssi:8; // signal intensity of packet
unsigned rate:4;
unsigned is_group:1;
unsigned:1;
unsigned sig_mode:2; // 0:is 11n packet; 1:is not 11n packet;
unsigned legacy_length:12; // if not 11n packet, shows length of packet.
unsigned damatch0:1;
unsigned damatch1:1;
unsigned bssidmatch0:1;
unsigned bssidmatch1:1;
unsigned MCS:7; // if is 11n packet, shows the modulation and code used (range from 0 to 76)
unsigned CWB:1; // if is 11n packet, shows if is HT40 packet or not
unsigned HT_length:16;// if is 11n packet, shows length of packet.
unsigned Smoothing:1;
unsigned Not_Sounding:1;
unsigned:1;
unsigned Aggregation:1;
unsigned STBC:2;
unsigned FEC_CODING:1; // if is 11n packet, shows if is LDPC packet or not.
unsigned SGI:1;
unsigned rxend_state:8;
unsigned ampdu_cnt:8;
unsigned channel:4; //which channel this packet in.
unsigned:12;
};
struct SnifferPacket{
struct RxControl rx_ctrl;
uint8_t data[DATA_LENGTH];
uint16_t cnt;
uint16_t len;
};
static void showMetadata(SnifferPacket *snifferPacket) {
unsigned int frameControl = ((unsigned int)snifferPacket->data[1] << 8) + snifferPacket->data[0];
uint8_t version = (frameControl & 0b0000000000000011) >> 0;
uint8_t frameType = (frameControl & 0b0000000000001100) >> 2;
uint8_t frameSubType = (frameControl & 0b0000000011110000) >> 4;
uint8_t toDS = (frameControl & 0b0000000100000000) >> 8;
uint8_t fromDS = (frameControl & 0b0000001000000000) >> 9;
// Only look for probe request packets
if (frameType != TYPE_MANAGEMENT ||
frameSubType != SUBTYPE_PROBE_REQUEST)
return;
Serial.print("RSSI: ");
Serial.print(snifferPacket->rx_ctrl.rssi, DEC);
Serial.print(" Ch: ");
Serial.print(wifi_get_channel());
char addr[] = "00:00:00:00:00:00";
getMAC(addr, snifferPacket->data, 10);
Serial.print(" Peer MAC: ");
Serial.print(addr);
uint8_t SSID_length = snifferPacket->data[25];
Serial.print(" SSID: ");
printDataSpan(26, SSID_length, snifferPacket->data);
Serial.println();
if (WiFi.status() == WL_CONNECTED) //Check WiFi connection status
{
HTTPClient http; //Declare an object of class HTTPClient
temp_url = main_url;
temp_url = temp_url + "mac=30:a8:db:96:a4:75";
temp_url = temp_url + "&rssi=-90";
temp_url = temp_url + "&ssid=none";
http.begin(temp_url); //Specify request destination
int httpCode = http.GET(); //Send the request
temp_url = "";
if (httpCode > 0)
{ //Check the returning code
String payload = http.getString(); //Get the request response payload
Serial.println(payload); //Print the response payload
}
http.end(); //Close connection
}
else
{
Serial.println("Wifi connection failed"); //Prints out this
}
}
/**
* Callback for promiscuous mode
*/
static void ICACHE_FLASH_ATTR sniffer_callback(uint8_t *buffer, uint16_t length) {
struct SnifferPacket *snifferPacket = (struct SnifferPacket*) buffer;
showMetadata(snifferPacket);
}
static void printDataSpan(uint16_t start, uint16_t size, uint8_t* data) {
for(uint16_t i = start; i < DATA_LENGTH && i < start+size; i++) {
Serial.write(data[i]);
}
}
static void getMAC(char *addr, uint8_t* data, uint16_t offset) {
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x", data[offset+0], data[offset+1], data[offset+2], data[offset+3], data[offset+4], data[offset+5]);
}
#define CHANNEL_HOP_INTERVAL_MS 1000
static os_timer_t channelHop_timer;
/**
* Callback for channel hoping
*/
void channelHop()
{
// hoping channels 1-14
uint8 new_channel = wifi_get_channel() + 1;
if (new_channel > 14)
new_channel = 1;
wifi_set_channel(new_channel);
}
#define DISABLE 0
#define ENABLE 1
void setup() {
// set the WiFi chip to "promiscuous" mode aka monitor mode
Serial.begin(115200);
delay(10);
wifi_set_opmode(STATION_MODE);
wifi_set_channel(1);
wifi_promiscuous_enable(DISABLE);
delay(10);
wifi_set_promiscuous_rx_cb(sniffer_callback);
delay(10);
wifi_promiscuous_enable(ENABLE);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print("Connecting..");
}
Serial.println("");
Serial.println("Connected..");
// setup the channel hoping callback timer
os_timer_disarm(&channelHop_timer);
os_timer_setfn(&channelHop_timer, (os_timer_func_t *) channelHop, NULL);
os_timer_arm(&channelHop_timer, CHANNEL_HOP_INTERVAL_MS, 1);
}
void loop() {
delay(10);
}
Here's the code which aggregates probe requests (MAC addresses and RSSIs) for 3 seconds and then sends them to specified server's endpoint using json (WIFI_AP_STA mode):
#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266HTTPClient.h>
#include <vector>
const char* apSsid = "ap-ssid";
const char* apPassword = "ap-password";
const char* clientSsid = "client-ssid";
const char* clientPassword = "client-password";
HTTPClient http;
WiFiEventHandler probeRequestPrintHandler;
String macToString(const unsigned char* mac) {
char buf[20];
snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return String(buf);
}
std::vector<WiFiEventSoftAPModeProbeRequestReceived> myList;
void onProbeRequestPrint(const WiFiEventSoftAPModeProbeRequestReceived& evt) {
myList.push_back(evt);
}
void setup() {
Serial.begin(115200);
Serial.println("Hello!");
// Don't save WiFi configuration in flash - optional
WiFi.persistent(false);
WiFi.mode(WIFI_AP_STA);
WiFi.softAP(apSsid, apPassword);
WiFi.begin(clientSsid, clientPassword);
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(100);
}
Serial.println("");
probeRequestPrintHandler = WiFi.onSoftAPModeProbeRequestReceived(&onProbeRequestPrint);
}
void loop() {
delay(3000);
String json = "";
DynamicJsonBuffer jsonBuffer;
JsonObject& root = jsonBuffer.createObject();
JsonArray& probes = root.createNestedArray("probes");
for(WiFiEventSoftAPModeProbeRequestReceived w : myList){
JsonObject& probe = probes.createNestedObject();
probe["address"] = macToString(w.mac);
probe["rssi"] = w.rssi;
}
myList.clear();
root.printTo(json);
Serial.println("json:" + json);
http.begin("http://example.com/api/v1/probe");
http.addHeader("Content-Type", "application/json");
http.POST(json);
http.end();
}
Remember to use the latest version (actually a pre-release - 2.4.0-rc1 or newer) of arduino-esp8266 library since those WiFiEvents were just recently added.
You can download ArduinoJson library using Library Manager (Sketch -> Include Library -> Manage Libraries...) if you don't have that already.
Trouble with Sending HTTP 1.1 GET request
I am trying to use PubNub to publish a message to a channel but I always get "Connection Failed!".
I know the structure of a publish URL is the following:
http://pubsub.pubnub.com/publish/<PUB-KEY>/<SUB-KEY>/0/<CHANNEL>/0/%22<MESSAGE>%22
I have tested the URL on Google Chrome and it works just fine.
The following is a C flavored code is running on an Arduino UNO + Adafruit HUZZAH CC3000 WIFI Breakout. This is not an Arduino hardware question per se, because I believe there is nothing wrong with my circuit. My issue is with the structure of the HTTP GET request created using Adafruit CC3000 Library.
I am having to go with sending a GET rather than using PubNub Arduino Library because it doesn't seem to support CC3000 WIFI module. They have a JSON WIFI and Ethernet examples but both do not communicate with the CC3000 WIFI module.
char PUBKEY[] = "XXXXXXX";
char SUBKEY[] = "XXXXXXX";
Adafruit_CC3000_Client client = cc3000.connectTCP(ip, 80);
if (client.connected())
{
client.print("GET /publish/");
client.print(PUBKEY);
client.print("/");
client.print(SUBKEY);
client.print("/0/");
client.print("MyPubChannel"); // Channel Name
client.print("/0/%22");
client.print("Hello World from Arduino!"); // Msg to publish
client.print("%22");
client.println(" HTTP/1.1");
client.print("Host: ");
client.println("pubsub.pubnub.com");
client.println();
}
else
{
Serial.println(F("Connection failed"));
}
I have read this page and understood that a correct GET request would be of the form:
GET /pub/WWW/TheProject.html HTTP/1.1
Host: www.w3.org
I am pretty sure there is something wrong with my GET request. Can anyone look at this and provide ANY hints as to what could be going wrong?
I am finally able to connect to PubNub using the code below.
#include <Adafruit_CC3000.h>
#include <ccspi.h>
#include <SPI.h>
#include <string.h>
#include "utility/debug.h"
#define ADAFRUIT_CC3000_IRQ 3 // MUST be an interrupt pin!
#define ADAFRUIT_CC3000_VBAT 5
#define ADAFRUIT_CC3000_CS 10
#define WLAN_SSID "XXXWifi"
#define WLAN_PASS "XXX"
#define WLAN_SECURITY WLAN_SEC_WPA2
#define IDLE_TIMEOUT_MS 3
uint32_t ip;
// PubNub Setup
#define WEBSITE "pubsub.pubnub.com"
#define WEBPAGE "/publish/"
char PUBKEY[] = "pub-XXXX";
char SUBKEY[] = "sub-XXXX";
Adafruit_CC3000 cc3000 = Adafruit_CC3000(ADAFRUIT_CC3000_CS, ADAFRUIT_CC3000_IRQ, ADAFRUIT_CC3000_VBAT, SPI_CLOCK_DIVIDER); // you can change this clock speed
Adafruit_CC3000_Client www;
void setup(void)
{
Serial.begin(115200);
/* Initialize the module */
Serial.print(F("\n Initializing WIFI Adapter..."));
if (!cc3000.begin())
{
Serial.println(F("Couldn't begin()! Check your wiring?"));
while(1);
}
Serial.print(F("Ready!\n"));
Serial.print(F("Connecting to [")); Serial.print(WLAN_SSID);
Serial.print(F("]..."));
if (!cc3000.connectToAP(WLAN_SSID, WLAN_PASS, WLAN_SECURITY)) {
Serial.println(F("Failed!"));
while(1);
}
Serial.print(F("Connected!\n"));
//Wait for DHCP to complete
Serial.print(F("Waiting for DHCP..."));
while (!cc3000.checkDHCP())
{
delay(100); // ToDo: Insert a DHCP timeout!
}
Serial.print(F("Done!\n"));
Serial.print(F("Resolving PubNub..."));
ip = 0;
// Try looking up the website's IP address
while (ip == 0) {
if (! cc3000.getHostByName(WEBSITE, &ip)) {
Serial.println(F("Couldn't resolve!"));
}
delay(500);
}
Serial.print(F("Resolved!\n"));
www = cc3000.connectTCP(ip, 80);
for(int i=0;i<=50;i++)
{
char buffer[4];
dtostrf(i, 4, 0, buffer);
Publish("ch2", buffer);
}
/* You need to make sure to clean up after yourself or the CC3000 can freak out */
/* the next time your try to connect ... */
Serial.println(F("\n\nDisconnecting"));
www.close();
cc3000.disconnect();
}
void loop(void)
{
delay(1000);
}
void Publish(char* CH, char* MSG)
{
if (www.connected()) {
www.fastrprint(F("GET "));
www.fastrprint(WEBPAGE);
www.fastrprint(PUBKEY);
www.fastrprint(F("/"));
www.fastrprint(SUBKEY);
www.fastrprint(F("/0/"));
www.fastrprint(CH);
www.fastrprint(F("/0/%22"));
www.fastrprint(MSG);
www.fastrprint(F("%22"));
www.fastrprint(F(" HTTP/1.1\r\n"));
www.fastrprint(F("Host: "));
www.fastrprint(WEBSITE);
www.fastrprint(F("\r\n"));
www.fastrprint(F("\r\n"));
www.println();
} else {
Serial.println(F("Connection failed"));
return;
}
//Read data until either the connection is closed, or the idle timeout is reached.
unsigned long lastRead = millis();
while (www.connected() && (millis() - lastRead < IDLE_TIMEOUT_MS)) {
while (www.available()) {
char c = www.read();
//Serial.print(c);
lastRead = millis();
}
}
}
char* clean(char* MSG)
{
return MSG;
}