static void getweather_callback(byte status, uint16_t off, uint16_t len) {
#if defined(ARDUINO)
char *p = (char*)Ethernet::buffer + off;
#else
char *p = ether_buffer;
#endif
/* scan the buffer until the first & symbol */
while(*p && *p!='&') {
p++;
}
if (*p != '&') return;
int v;
if (findKeyVal(p, tmp_buffer, TMP_BUFFER_SIZE, PSTR("sunrise"), true)) {
v = atoi(tmp_buffer);
if (v>=0 && v<=1440) {
os.nvdata.sunrise_time = v;
}
}
if (findKeyVal(p, tmp_buffer, TMP_BUFFER_SIZE, PSTR("sunset"), true)) {
v = atoi(tmp_buffer);
if (v>=0 && v<=1440) {
os.nvdata.sunset_time = v;
}
}
os.nvdata_save(); // save non-volatile memory
if (findKeyVal(p, tmp_buffer, TMP_BUFFER_SIZE, PSTR("scale"), true)) {
v = atoi(tmp_buffer);
if (v>=0 && v<=250 && v != os.options[OPTION_WATER_PERCENTAGE].value) {
// only save if the value has changed
os.options[OPTION_WATER_PERCENTAGE].value = v;
os.options_save();
}
}
if (findKeyVal(p, tmp_buffer, TMP_BUFFER_SIZE, PSTR("tz"), true)) {
v = atoi(tmp_buffer);
if (v>=0 && v<= 96) {
if (v != os.options[OPTION_TIMEZONE].value) {
// if timezone changed, save change and force ntp sync
os.options[OPTION_TIMEZONE].value = v;
os.options_save();
}
}
}
if (findKeyVal(p, tmp_buffer, TMP_BUFFER_SIZE, PSTR("eip"), true)) {
os.external_ip = atol(tmp_buffer);
}
os.checkwt_success_lasttime = os.now_tz();
}
// ======================
// Setup Function
// ======================
void do_setup() {
/* Clear WDT reset flag. */
MCUSR &= ~(1<<WDRF);
DEBUG_BEGIN(9600);
DEBUG_PRINTLN("started.");
os.begin(); // OpenSprinkler init
os.options_setup(); // Setup options
pd.init(); // ProgramData init
setSyncInterval(RTC_SYNC_INTERVAL); // RTC sync interval
// if rtc exists, sets it as time sync source
setSyncProvider(RTC.get);
os.lcd_print_time(os.now_tz()); // display time to LCD
// enable WDT
/* In order to change WDE or the prescaler, we need to
* set WDCE (This will allow updates for 4 clock cycles).
*/
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* set new watchdog timeout prescaler value */
WDTCSR = 1<<WDP3 | 1<<WDP0; // 8.0 seconds
/* Enable the WD interrupt (note no reset). */
WDTCSR |= _BV(WDIE);
if (os.start_network()) { // initialize network
os.status.network_fails = 0;
} else {
os.status.network_fails = 1;
}
os.status.req_network = 0;
os.status.req_ntpsync = 1;
os.apply_all_station_bits(); // reset station bits
os.button_timeout = LCD_BACKLIGHT_TIMEOUT;
}
void GetWeather() {
EthernetClient client;
static struct hostent *server = NULL;
if (!server) {
strcpy(tmp_buffer, WEATHER_SCRIPT_HOST);
server = gethostbyname(tmp_buffer);
if (!server) {
DEBUG_PRINTLN("can't resolve weather server");
return;
}
DEBUG_PRINT("weather server ip:");
DEBUG_PRINT(((uint8_t*)server->h_addr)[0]);
DEBUG_PRINT(":");
DEBUG_PRINT(((uint8_t*)server->h_addr)[1]);
DEBUG_PRINT(":");
DEBUG_PRINT(((uint8_t*)server->h_addr)[2]);
DEBUG_PRINT(":");
DEBUG_PRINTLN(((uint8_t*)server->h_addr)[3]);
}
if (!client.connect((uint8_t*)server->h_addr, 80)) {
DEBUG_PRINTLN("failed to connect to weather server");
client.stop();
return;
}
BufferFiller bf = tmp_buffer;
char tmp[100];
read_from_file(wtopts_name, tmp, 100);
bf.emit_p(PSTR("$D.py?loc=$E&key=$E&fwv=$D&wto=$S"),
(int) os.options[OPTION_USE_WEATHER].value,
ADDR_NVM_LOCATION,
ADDR_NVM_WEATHER_KEY,
(int)os.options[OPTION_FW_VERSION].value,
tmp);
char *src=tmp_buffer+strlen(tmp_buffer);
char *dst=tmp_buffer+TMP_BUFFER_SIZE-1;
char c;
// url encode. convert SPACE to %20
// copy reversely from the end because we are potentially expanding
// the string size
while(src!=tmp_buffer) {
c = *src--;
if(c==' ') {
*dst-- = '0';
*dst-- = '2';
*dst-- = '%';
} else {
*dst-- = c;
}
};
*dst = *src;
char urlBuffer[255];
strcpy(urlBuffer, "GET /weather");
strcat(urlBuffer, dst);
strcat(urlBuffer, " HTTP/1.0\r\nHOST: weather.opensprinkler.com\r\n\r\n");
client.write((uint8_t *)urlBuffer, strlen(urlBuffer));
bzero(ether_buffer, ETHER_BUFFER_SIZE);
time_t timeout = os.now_tz() + 5; // 5 seconds timeout
while(os.now_tz() < timeout) {
int len=client.read((uint8_t *)ether_buffer, ETHER_BUFFER_SIZE);
if (len<=0) {
if(!client.connected())
break;
else
continue;
}
peel_http_header();
getweather_callback(0, 0, ETHER_BUFFER_SIZE);
}
client.stop();
}
/** Main Loop */
void do_loop()
{
static ulong last_time = 0;
static ulong last_minute = 0;
byte bid, sid, s, pid, qid, bitvalue;
ProgramStruct prog;
os.status.mas = os.options[OPTION_MASTER_STATION];
os.status.mas2= os.options[OPTION_MASTER_STATION_2];
time_t curr_time = os.now_tz();
// ====== Process Ethernet packets ======
#if defined(ARDUINO) // Process Ethernet packets for Arduino
uint16_t pos=ether.packetLoop(ether.packetReceive());
if (pos>0) { // packet received
handle_web_request((char*)Ethernet::buffer+pos);
}
wdt_reset(); // reset watchdog timer
wdt_timeout = 0;
ui_state_machine();
#else // Process Ethernet packets for RPI/BBB
EthernetClient client = m_server->available();
if (client) {
while(true) {
int len = client.read((uint8_t*) ether_buffer, ETHER_BUFFER_SIZE);
if (len <=0) {
if(!client.connected()) {
break;
} else {
continue;
}
} else {
m_client = &client;
ether_buffer[len] = 0; // put a zero at the end of the packet
handle_web_request(ether_buffer);
m_client = 0;
break;
}
}
}
#endif // Process Ethernet packets
// if 1 second has passed
if (last_time != curr_time) {
last_time = curr_time;
if (os.button_timeout) os.button_timeout--;
#if defined(ARDUINO)
if (!ui_state)
os.lcd_print_time(os.now_tz()); // print time
#endif
// ====== Check raindelay status ======
if (os.status.rain_delayed) {
if (curr_time >= os.nvdata.rd_stop_time) { // rain delay is over
os.raindelay_stop();
}
} else {
if (os.nvdata.rd_stop_time > curr_time) { // rain delay starts now
os.raindelay_start();
}
}
// ====== Check controller status changes and write log ======
if (os.old_status.rain_delayed != os.status.rain_delayed) {
if (os.status.rain_delayed) {
// rain delay started, record time
os.raindelay_start_time = curr_time;
} else {
// rain delay stopped, write log
write_log(LOGDATA_RAINDELAY, curr_time);
}
os.old_status.rain_delayed = os.status.rain_delayed;
}
// ====== Check rain sensor status ======
if (os.options[OPTION_SENSOR_TYPE] == SENSOR_TYPE_RAIN) { // if a rain sensor is connected
os.rainsensor_status();
if (os.old_status.rain_sensed != os.status.rain_sensed) {
if (os.status.rain_sensed) {
// rain sensor on, record time
os.sensor_lasttime = curr_time;
} else {
// rain sensor off, write log
if (curr_time>os.sensor_lasttime+10) { // add a 10 second threshold
// to avoid faulty rain sensors generating
// too many log records
write_log(LOGDATA_RAINSENSE, curr_time);
}
}
os.old_status.rain_sensed = os.status.rain_sensed;
}
}
// ====== Schedule program data ======
ulong curr_minute = curr_time / 60;
boolean match_found = false;
RuntimeQueueStruct *q;
// since the granularity of start time is minute
// we only need to check once every minute
if (curr_minute != last_minute) {
last_minute = curr_minute;
// check through all programs
for(pid=0; pid<pd.nprograms; pid++) {
pd.read(pid, &prog);
if(prog.check_match(curr_time)) {
// program match found
// process all selected stations
for(sid=0;sid<os.nstations;sid++) {
bid=sid>>3;
s=sid&0x07;
// skip if the station is a master station (because master cannot be scheduled independently
if ((os.status.mas==sid+1) || (os.status.mas2==sid+1))
continue;
// if station has non-zero water time and the station is not disabled
if (prog.durations[sid] && !(os.station_attrib_bits_read(ADDR_NVM_STNDISABLE+bid)&(1<<s))) {
// water time is scaled by watering percentage
ulong water_time = water_time_resolve(water_time_decode(prog.durations[sid]));
// if the program is set to use weather scaling
if (prog.use_weather) {
byte wl = os.options[OPTION_WATER_PERCENTAGE];
water_time = water_time * wl / 100;
if (wl < 20 && water_time < 10) // if water_percentage is less than 20% and water_time is less than 10 seconds
// do not water
water_time = 0;
}
if (water_time) {
// check if water time is still valid
// because it may end up being zero after scaling
q = pd.enqueue();
if (q) {
q->st = 0;
q->dur = water_time;
q->sid = sid;
q->pid = pid+1;
match_found = true;
} else {
// queue is full
}
}// if water_time
}// if prog.durations[sid]
}// for sid
}// if check_match
}// for pid
// calculate start and end time
if (match_found) {
schedule_all_stations(curr_time);
// For debugging: print out queued elements
DEBUG_PRINT("en:");
for(q=pd.queue;q<pd.queue+pd.nqueue;q++) {
DEBUG_PRINT("[");
DEBUG_PRINT(q->sid);
DEBUG_PRINT(",");
DEBUG_PRINT(q->dur);
DEBUG_PRINT(",");
DEBUG_PRINT(q->st);
DEBUG_PRINT("]");
}
DEBUG_PRINTLN("");
}
}//if_check_current_minute