void init() {
CyGlobalIntEnable;
rx_int_StartEx(RX_INT); // start RX interrupt (look for CY_ISR with RX_INT address)
// for code that writes received bytes to LCD.
UART_Start(); // initialize UART
UART_ClearRxBuffer();
// Init Electronic Components
PGA_TOP_GND_Start();
PGA_REF_Start();
PGA_GAIN_Start();
IDAC8_REF_Start();
ADC_SAR_1_Start();
//ADC_SAR_1_StartConvert();
// Init muxes
TOP_MUX_GND_Start();
TOP_MUX_VREF_Start();
BOTTOM_MUX_SENSE_Start();
zeroAllPins();
}
void main(){
CyGlobalIntEnable;
// Start up initial mote processes
SleepTimer_Start();
isr_SleepTimer_StartEx(sleepTimerWake_INT);
FS_Init(); // SD Card
modem_set_api_feed(FEED_ID, API_KEY);
modem_start();
ultrasonic_start();
solinst_start();
ADC_SAR_1_Start();
//modem_power_off();
packet_ready = 0u;
take_reading = 1u;
t_sample = 2u; // Initialize Sample Period to 2 minutes
trigger_sampler = 0u; // Initialize automated sampler to not take a sample
bottle_count = 0u; // Initialize bottle count to zero
NeoRTC_Start(rtcCallBackReceived); // Start and enable the RTC.
NeoRTC_Set_Repeating_Minute_Alarm(t_sample); // Set 1-minute alarm
// Uncomment below to set RTC
/*
NeoRtcTimeStruct tm = {
.second = 00,
.minute = 54,
.hour = 18,
.day = 27,
.weekday = 2,
.month = 5,
.year = 2014,
} ;
RTC_WriteTime(tm); //sets time
*/
for(;;){
RTC_Process_Tasks();
// Loop continuously and take a reading
// every "t_sample" minutes.
// The variable "take_reading" is set to TRUE
// by rtcCallBackReceived() defined after the for() loop
if(take_reading){
// Turn on the modem to update state variables:
// sampling frequency; triggering the autosampler
modem_power_on();
if (clear_packet(data_packet)) {
packet_ready = 0u;
}
// To communicate with the IoT platform, the node
// 1) listens on a given port and 2) parses an incoming string
// for relevant commands. Once a packet is ready to send (3),
// the node 4) transmits the packet. This is achieved in as little
// as four lines of code by leveraging an existing TCP/IP library.
//
// 1) modem_get_packet()
// 2) packet_get_uint8()
// 3) sprintf(data_packet, ...
// 4) modem_send_packet()
//
if (modem_get_packet(data_packet,"t_sample,trigger_sampler")) {
// Read in any updated values
if(packet_get_uint8(data_packet, "t_sample", &tmp)){
t_sample = tmp;
}
if(packet_get_uint8(data_packet, "trigger_sampler", &tmp)){
trigger_sampler = tmp;
}
}
/*
if (send_attempts > 0) {
debug_write("New reading taken before previous packet was sent");
}
*/
// Trigger the autosampler to collect the sample
// if a sample is requested
if (trigger_sampler){
// Send in acknowledgement that packet containing
// info re:automated sampler has been received:
modem_send_packet("trigger_sampler, 0");
trigger_sampler = 0; // Update the value locally
// Trigger the autosampler as long as there are still available samples
// If bottle_count >= MAX_BOTTLE_COUNT, skip taking a sample and avoid
// waiting for the code to timeout
if (bottle_count < MAX_BOTTLE_COUNT) {
// Turn off modem to conserve energy
modem_power_off();
// Start up the autosampler processes
// and power on the autosampler
autosampler_start();
autosampler_power_on();
// Trigger the autosampler and update current bottle_count
autosampler_take_sample(&bottle_count);
// Power off the autosampler
// and shut down the autosampler processes
autosampler_power_off();
autosampler_stop();
}
else {
debug_write("bottle_count >= MAX_BOTTLE_COUNT");
}
}
// Construct the data packet that will be transmitted
// by the sensor node, starting with the bottle the
// autosampler last collected a sample in
// (the packet is in .csv format)
sprintf(data_packet,"%s, %u\r\n",
"bottle", bottle_count);
// Get Sensor Readings for:
// Depth, Pressure, Temperature, Conductivity
// and update the data packet
if (solinst_get_reading(&solinst_reading)){
sprintf(data_packet,"%s%s, %f\r\n", data_packet,
"depth_press", solinst_reading.depth);
sprintf(data_packet,"%s%s, %f\r\n", data_packet,
"temp_press", solinst_reading.temp);
}
if (ultrasonic_get_reading(&ultrasonic_reading)){
sprintf(data_packet,"%s%s, %f\r\n", data_packet,
"depth_sonic", ultrasonic_reading.depth);
}
if (ReadBatteryVoltage(&vBattery)){
sprintf(data_packet,"%s%s, %f\r\n", data_packet,
"V_batt", vBattery);
}
// An example of writing data in JSON format
// This was replaced with .csv format due to
// .csv's smaller packet size
/*
sprintf(data_packet, "{"
"\"method\":\"put\","
"\"resource\":\"/feeds/%d\","
"\"headers\":{\"X-ApiKey\":\"%s\"},"
"\"body\":{\"version\":\"1.0.0\",\"datastreams\":["
"{ \"id\" : \"depth_sonic\", \"current_value\" : \"%f\"},"
"{ \"id\" : \"depth_press\", \"current_value\" : \"%f\"},"
"{ \"id\" : \"temp_press\", \"current_value\" : \"%f\"},"
"{ \"id\" : \"trigger_sampler\", \"current_value\" : \"%d\"},"
"{ \"id\" : \"V_batt\", \"current_value\" : \"%f\"}"
"]}}",
FEED_ID,API_KEY,
ultrasonic_reading.depth, solinst_reading.depth, solinst_reading.temp,0u,vBattery);
*/
// Update flags for sending a packet and taking sensor readings
packet_ready = 1u;
take_reading = 0u;
//send_attempts = 0u;
// Once the flag for packet_ready has been set,
// send the packet and save the packet locally
} else if(packet_ready){
isr_SleepTimer_Stop; // <============= ADDRESS THIS WITH B.K.
// Power on the modem in case it was turned off
modem_power_on();
// modem_state should now be IDLE or READY
// and we can send the packet
modem_send_packet(data_packet);
// Power off the modem and conserve energy
modem_power_off();
// Backup data to SD Card
// Use the current time to time-stamp the current reading
NeoRtcTimeStruct tm_neo = NeoRTC_Read_Time();
// Overwrite current data_packet with time-stamped data
sprintf(data_packet, "\r\n%d:%d:%d %d/%d/%d -- [ID %d] u_d=%f s_d=%f s_t=%f bottle=%d v_b=%f", tm_neo.hour, tm_neo.minute,
tm_neo.second, tm_neo.day, tm_neo.month, tm_neo.year, moteID,
ultrasonic_reading.depth, solinst_reading.depth, solinst_reading.temp,bottle_count,vBattery);
// Write data_packet to a *.txt file on the SD Card
Write_To_SD_Card("data.txt","a",data_packet,strlen(data_packet));
// Clear the current packet in preparation for the next reading
// when the node awakens from sleep
if (clear_packet(data_packet)) {
packet_ready = 0u;
}
// If either the sensor node should take a reading nor send a packet
// go to low power mode to increase battery life
}else{
// Set repeating alarm to trigger every "t_sample" minutes
NeoRTC_Set_Repeating_Minute_Alarm(t_sample);
Goto_Low_Power_Mode();
}
CyDelay(1u); // Quick Pause to prevent locking
}
}