main.cpp

00001 /**
00002  * @example ACKme_HelloWorld/main.cpp
00003  *
00004  * This example program verifies the operation of key features of the Nucleo board,
00005  * without the ACKme shield installed. 
00006  * It blinks the Nucleo board user LED, 
00007  * It increases the blink rate when you press the User button. 
00008  * It prints to a serial terminal connected to the USB port
00009  * and echoes characters entered at the terminal.
00010  * It responds, with a message, to typing 'hi <Enter>' at the terminal. 
00011  *
00012  */
00013 
00014 #include "mbed.h"
00015 // include C library headers
00016 #include <stdio.h> // printf
00017 #include <ctype.h> // tolower
00018 #define ASCII_ESC 27
00019  
00020 InterruptIn myButton(USER_BUTTON);
00021 static Serial consoleSerial(STDIO_UART_TX, STDIO_UART_RX);
00022 PwmOut myLed(LED1);
00023 
00024 double defaultPeriod = 1.0f; // 1 second period
00025 double defaultPulseWidth = defaultPeriod/2.0; // 1/2 second pulse (on)
00026 
00027 double quickPeriod = 0.1f; // 
00028 double quickPulseWidth = quickPeriod/2.0;
00029  
00030 void pressed()
00031 {
00032     myLed.period(quickPeriod);  
00033     myLed.pulsewidth(quickPulseWidth); 
00034 }
00035 void released()
00036 {
00037     myLed.period(defaultPeriod);  
00038     myLed.pulsewidth(defaultPulseWidth); 
00039 }
00040 
00041 int main() {
00042     // specify period first, then everything else
00043     char c;
00044     char c0 = ' ';
00045     char c1 = ' ';
00046     char c2 = ' ';
00047     
00048     released();
00049     myButton.fall(&pressed);
00050     myButton.rise(&released);    
00051     
00052     consoleSerial.baud(115200); // console terminal to 115200 baud
00053     
00054     printf( "%c[2J", ASCII_ESC );   // clear screen     
00055     printf("\r\nHello World!\r\n...from ACKme Networks\r\n\r\n");    
00056     
00057     printf("This app verifies some features of your Nucleo board.\r\n");    
00058     printf("Verify that the user LED (LD2 on the Nucleo F401RE) is blinking.\r\n");
00059     printf("When you hold down the user button, the user LED blinks faster.\r\n");    
00060     printf("Characters you type on the terminal console are echoed.\r\n\r\n");
00061     printf("Type 'hi <Enter>' for a greeting.\r\n");    
00062 
00063     while(1) {
00064         if (consoleSerial.readable()){
00065             c = consoleSerial.getc(); //Read data from serial console
00066             consoleSerial.printf("%c",c);
00067             c0 = c1;
00068             c1 = c2;
00069             c2 = tolower(c);
00070             if ((c0 == 'h') && (c1 == 'i') && ((c2 == '\n') || (c2 == '\r'))){
00071                 printf("\r\n\r\nHello!");
00072                 printf("\r\nYou have successfully programmed your Nucleo board.");
00073                 printf("\r\nNow turn off power to the board, and install");
00074                 printf("\r\nthe ACKme AMW006-A02 (Mantis) Wi-Fi shield.");
00075             } 
00076         }
00077     }
00078 }