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Dependencies: mbed MbedJSONValue mbed-rtos 4DGL-uLCD-SE ESP8266NodeMCUInterface
main.cpp
- Committer:
- alexhrao
- Date:
- 2019-03-29
- Revision:
- 1:0620ba35d2e8
- Parent:
- 0:4ffa136585a2
- Child:
- 2:f7d19812bdc5
File content as of revision 1:0620ba35d2e8:
#include "mbed.h" #include "uLCD_4DGL.h" #include "ESP8266Interface.h" #include "TCPSocketConnection.h" #include "rtos.h" // We need this for being able to reset the MBED (similar to watch dogs) extern "C" void mbed_reset(); // LCD Screen uLCD_4DGL uLCD(p9, p10, p11); Mutex lcd_lock; // File System LocalFileSystem fs("local"); // Bluetooth RawSerial pc(USBTX, USBRX); RawSerial dev(p28,p27); Thread dev_thread; // Error LED DigitalOut err_led(LED1); // WiFi ESP8266Interface wifi(p13, p14, p15, 9600, 10000); // Time Thread time_thread; // Weather Thread weather_thread; char* forecast_link; void time_updater() { // We're not an interrupt, so take as much time as we need. Infinite loop // but wait 1 second between each loop struct tm* ltm; time_t now; now = time(NULL); ltm = localtime(&now); // Buffer for time string. Max length is 23:59 + \0 int max_time_len = 6; char ftime[max_time_len]; int min = -1; while (true) { // if the minute has changed, update. now = time(NULL); ltm = localtime(&now); if(ltm->tm_min != min) { // Get the new time strftime(ftime, max_time_len, "%H:%M", ltm); // Update time! Lock the lcd mutex lcd_lock.lock(); uLCD.text_width(2); uLCD.text_height(2); uLCD.text_string(ftime, 0, 2, FONT_8X8, GREEN); // Done updating - unlock! lcd_lock.unlock(); min = ltm->tm_min; } // Wait 1 second Thread::wait(1.0f); } } void weather_updater() { // We can take as long as we want while (true) { // get the weather // we'll always want to update the LCD - don't worry about the previous // weather int curr_temp = 0; int high_temp = 0; int low_temp = 0; char buf[12]; sprintf(buf, "%d %d/%d", curr_temp, high_temp, low_temp); // lock lcd_lock.lock(); uLCD.text_width(2); uLCD.text_height(2); // include null! uLCD.text_string(buf, 0, 5, FONT_7X8, WHITE); // done! unlock lcd_lock.unlock(); Thread::wait(3600); } } void dev_recv() { // Continually check if we have stuff... char buf[1024]; int ind = 0; while (true) { while (true) { // get stuff. If we encounter \r or \n, that's a complete command! char tmp = dev.getc(); if (tmp == '\n' || tmp == '\r') { break; } buf[ind++] = tmp; Thread::wait(0.01); } buf[ind] = '\0'; // read command and respond if (strcmp(buf, "reset") == 0) { dev.printf("Are you sure? y/[n]\n"); } buf[0] = '\0'; ind = 0; //if (strcmp(buf, "reset") != 0) { Thread::wait(0.01); } } int main() { // Set up bluetooth dev.baud(9600); pc.baud(9600); // Tell user we're initializing... lcd_lock.lock(); uLCD.cls(); uLCD.text_height(2); uLCD.text_string("PLEASE WAIT", 0, 2, FONT_7X8, WHITE); lcd_lock.unlock(); // Need to get wifi settings. If we don't have local file, then ask! FILE* fid = NULL;//fopen("/local/settings.txt", "r"); // TODO: Get username and password char ssid[256]; char pass[256]; if (fid == NULL) { //fclose(fid); } else { lcd_lock.lock(); uLCD.cls(); uLCD.text_height(2); uLCD.text_width(2); uLCD.text_string("SEE", 0, 2, FONT_7X8, RED); uLCD.text_string("DEVICE", 0, 5, FONT_7X8, RED); lcd_lock.unlock(); // Ask! dev.printf("Please provide the name of a WiFi Network\n"); // Wait for them to respond while (!dev.readable()) { wait(0.001); } int ind = 0; // Read response while (ind < 255) { char tmp = dev.getc(); if (tmp == '\n' || tmp == '\r') { break; } ssid[ind++] = tmp; wait(0.01); } ssid[ind] = '\0'; // flush device while (dev.readable()) { dev.getc(); wait(0.01); } dev.printf("Please provide the password\n"); while (!dev.readable()) { wait(0.001); } ind = 0; while (ind < 255) { char tmp = dev.getc(); if (tmp == '\n' || tmp == '\r') { break; } pass[ind++] = tmp; wait(0.01); } pass[ind] = '\0'; // Because this is a simple proof of concept, we store the password in // plaintext. It should be noted, however, that you **should never do // this in "real life"** //fid = fopen("/local/settings.txt", "w"); //fprintf(fid, "ssid: %s\npass: %s\n", ssid, pass); //fclose(fid); } bool res = wifi.init(); //dev.printf("Reset: %d\n", res); // Set up the WiFi Access Point dev.printf("Connecting to WiFi %s with Password %s\n", ssid, pass); res = wifi.connect("Alex's iPhone", "mbedlookhere"); //if (!res) { // dev.printf("Connection Failed... Resetting Device\n"); // mbed_reset(); //} dev.printf("Is Connected: %d\n", wifi.is_connected()); dev.printf("IP Address: %s\n", wifi.getIPAddress()); TCPSocketConnection tcp; int tcp_res = tcp.connect("13.58.105.158", 80); dev.printf("Connection: %d\n", tcp_res); // Where are we & What time is it? // Create the TCP connection, request from ipstack. Get the request, // and store the current time (FORMAT?) set_time(1256729737); // Now that we know what time it is, set up our Time Thread time_thread.start(time_updater); // Now, make a single request to nws and get the forecast link - we can // store this link for later! lcd_lock.lock(); uLCD.cls(); lcd_lock.unlock(); // Start up weather service! weather_thread.start(weather_updater); //weather_ticker.attach(&weather_tick, 900000.0f); // Listen on bluetooth. dev_thread.start(dev_recv); while(true) { err_led = !err_led; //dev.printf("Connection Status: %d\n", wifi.is_connected()); wait(0.5); } }