Library to use a wifly module: RN 131 C/G
Dependents: RN-XV_simple_server
Wifly.cpp
- Committer:
- samux
- Date:
- 2011-09-06
- Revision:
- 10:d3e3e925f62f
- Parent:
- 9:984c1436dd42
- Child:
- 11:6eb90004d92a
File content as of revision 10:d3e3e925f62f:
#include "mbed.h" #include "Wifly.h" #include <string> Wifly::Wifly( PinName tx, PinName rx, PinName _reset, char * ssid, char * phrase, bool wpa, char * ip, char * netmask, bool dhcp, int baudrate): wifi(tx, rx), reset_pin(_reset) { wifi.baud(baudrate); reset_pin = 1; wifi.format(8, Serial::None, 1); this->wpa = wpa; this->phrase = phrase; this->ssid = ssid; this->ip = ip; this->netmask = netmask; this->dhcp = dhcp; adhoc = false; length = 0; new_msg = false; } Wifly::Wifly( PinName tx, PinName rx, PinName _reset, char * ssid, char * ip, char * netmask, int channel, int baudrate): wifi(tx, rx), reset_pin(_reset) { wifi.baud(baudrate); reset_pin = 1; wifi.format(8, Serial::None, 1); adhoc = true; this->ssid = ssid; this->ip = ip; this->netmask = netmask; this->channel = channel; length = 0; new_msg = false; } void Wifly::handler_rx(void) { char read = wifi.getc(); if (read != '\r' && read != '\n') { tmp_buf_rx[length] = read; length++; new_msg = false; } if (read == 0xff || read == '\n') { new_msg = true; tmp_buf_rx[length] = 0; memcpy(buf_rx, tmp_buf_rx, length); length = 0; } } void Wifly::attach_rx(bool null) { if (!null) wifi.attach(NULL); else wifi.attach(this, &Wifly::handler_rx); } bool Wifly::Send(char * str, char * ACK, char * res) { char read; attach_rx(false); size_t found = string::npos; if (!strcmp(ACK, "NO")) wifi.printf("%s", str); else { //We flush the buffer while (wifi.readable()) wifi.getc(); Timer tmr; tmr.start(); wifi.printf("%s", str); string checking; while (1) { if (tmr.read() > 3) { //We flush the buffer while (wifi.readable()) wifi.getc(); //printf("checking: %s\r\n", checking); attach_rx(true); return false; } else if (wifi.readable()) { read = wifi.getc(); if ( read != '\r' && read != '\n') { checking += read; found = checking.find(ACK); if (found != string::npos) { //We flush the buffer while (wifi.readable()) wifi.getc(); //printf("checking: %s\r\n", checking); break; } } } } attach_rx(true); return (found != string::npos); } if ( res != NULL) { int i = 0; while (!wifi.readable()); wait(0.1); while (wifi.readable()) { read = wifi.getc(); if ( read != '\r' && read != '\n') { res[i++] = read; } } } attach_rx(true); return true; } bool Wifly::Join() { char cmd[30]; exit(); if (!CmdMode()) { printf("join: cannot enter in cmd mode\r\n"); exit(); return false; } //auth if (!Send("set wlan auth 3\r\n", "AOK")) { printf("join: cannot set auth\r\n"); exit(); return false; } //dhcp sprintf(cmd, "set ip dhcp %d\r\n", (dhcp) ? 1 : 0); if (!Send(cmd, "AOK")) { printf("join: cannot set dhcp\r\n"); exit(); return false; } //no echo if (!Send("set uart mode 1\r\n", "AOK")) { printf("join: cannot set no echo\r\n"); exit(); return false; } if (!dhcp) { printf("not dhcp\r\n"); sprintf(cmd, "set ip address %s\r\n", ip); if (!Send(cmd, "AOK")) { printf("Wifly::Join: cannot set ip address\r\n"); exit(); return false; } sprintf(cmd, "set ip netmask %s\r\n", netmask); if (!Send(cmd, "AOK")) { printf("Wifly::join: cannot set netmask\r\n"); exit(); return false; } } //key step if (wpa) sprintf(cmd, "set wlan phrase %s\r\n", phrase); else sprintf(cmd, "set wlan key %s\r\n", phrase); if (!Send(cmd, "AOK")) { printf("join: cannot set phrase\r\n"); exit(); return false; } //join the network sprintf(cmd, "join %s\r\n", ssid); if (!Send(cmd, "IP=")) { printf("join: cannot join %s\r\n", ssid); exit(); return false; } exit(); printf("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, (wpa) ? "WPA" : "WEP"); return true; } bool Wifly::CreateAdhocNetwork() { if (adhoc) { char cmd[50]; exit(); if (!CmdMode()) { printf("Wifly::CreateAdhocNetwork: cannot enter in cmd mode\r\n"); exit(); return false; } if (!Send("set wlan join 4\r\n", "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set join 4\r\n"); exit(); return false; } //no echo if (!Send("set uart mode 1\r\n", "AOK")) { printf("join: cannot set no echo\r\n"); exit(); return false; } //ssid sprintf(cmd, "set wlan ssid %s\r\n", ssid); if (!Send(cmd, "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set ssid\r\n"); exit(); return false; } sprintf(cmd, "set wlan channel %d\r\n", channel); if (!Send(cmd, "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set channel\r\n"); exit(); return false; } sprintf(cmd, "set ip address %s\r\n", ip); if (!Send(cmd, "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set ip address\r\n"); exit(); return false; } sprintf(cmd, "set ip netmask %s\r\n", netmask); if (!Send(cmd, "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set netmask\r\n"); exit(); return false; } if (!Send("set ip dhcp 0\r\n", "AOK")) { printf("Wifly::CreateAdhocNetwork: cannot set dhcp off\r\n"); exit(); return false; } if (!Send("save\r\n", "Stor")) { printf("Wifly::CreateAdhocNetwork: cannot save\r\n"); exit(); return false; } Send("reboot\r\n", "NO"); printf("\r\ncreating an adhoc\r\nnetwork: %s\r\nip: %s\r\nnetmask: %s\r\nchannel: %d\r\n\r\n", ssid, ip, netmask, channel); return true; } else { printf("Wifly::join: You don't chose the right constructor for creating an adhoc mode!\r\n"); return false; } } bool Wifly::CmdMode() { if (!Send("$$$", "CMD")) { printf("Wifly::CmdMode: cannot enter in cmd mode\r\n"); return false; } return true; } void Wifly::reset() { reset_pin = 0; memset(buf_rx, 0, 100); wait(0.2); reset_pin = 1; memset(tmp_buf_rx, 0, 100); wait(0.2); } void Wifly::putc(char c) { wifi.putc(c); } void Wifly::read(char * str) { if (new_msg) { memcpy(str, buf_rx, strlen(buf_rx + 1) + 1); new_msg = false; } else str = NULL; } bool Wifly::exit() { return Send("exit\r", "EXIT"); } bool Wifly::readable() { return(wifi.readable()); } bool Wifly::changeBaudrate(int baudrate) { char cmd[20]; exit(); if (!CmdMode()) { printf("Wifly::changeBaudrate: cannot enter in cmd mode\r\n"); return false; } sprintf(cmd, "set u b %d\r\n", baudrate); if (!Send(cmd, "AOK")) { printf("Wifly::changeBaudrate: cannot set new baudrate\r\n"); exit(); return false; } if (!Send("save\r\n", "Stor")) { printf("Wifly::changeBaudrate: cannot save\r\n"); exit(); return false; } return true; } char Wifly::getc() { return(wifi.getc()); }