Development v12

Warning - Product Update

All the resources present on this section belong to Waspmote v12, Waspmote Plug & Sense! v12 and Meshlium v3.8.

If you have a Waspmote v15, Waspmote Plug & Sense! v15 or Meshlium v4.0 please go to the new Development Section.

Check what is your version and what are the differences between the old and the new one in this document.

» USB 02: USB printf function

This example shows how to use USB.printf() funciton to print several char/strings/int... in a single line

Required Materials

1 x Waspmote
1 x MiniUSB wire

Notes

This example can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  ------ [USB_1] Using USB.printf() function -------- 
 *  
 *  Explanation: This example shows how to use USB.printf() funciton to print 
 *  several char/strings/int... in a single line
 *  
 *  Copyright (C) 2016 Libelium Comunicaciones Distribuidas S.L. 
 *  http://www.libelium.com 
 *  
 *  This program is free software: you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation, either version 3 of the License, or 
 *  (at your option) any later version. 
 *  
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details. 
 *  
 *  You should have received a copy of the GNU General Public License 
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>. 
 *  
 *  Version:           3.0 
 *  Design:            David Gascon
 *  Implementation:    Yuri Carmona, Marcos Yarza
 */
 
// variables
int var1=0xABCD;
int var2=3.1416;
int var3=32767;//max signed int
int var4=32768;//overflows signed int range
long var5=2147483647;//max signed long int
long var6=2147483648;//overflows signed long range
unsigned long var7=4294967295;//max unsigned long

void setup()
{
  // Opening UART to show messages using 'Serial Monitor'
  USB.ON();
  RTC.ON();
  ACC.ON();
}

void loop()
{
  USB.printf("%s\n", "Hello world"); // with line break
  USB.printf("time: %s\n", RTC.getTime());
  USB.printf("millis: %lu\n",millis());  
  USB.printf("hexadecimal: %x\n", var1);
  USB.printf("decimal: %d\n", var1);
  USB.printf("unsigned int: %u\n", var1);  
  USB.printf("It is not possible to print floats: %f\n", var2);
  USB.printf("int: %d\n", var3);
  USB.printf("'32768' overflows signed int range: %d\n", var4);
  USB.printf("signed long: %ld\n", var5);
  USB.printf("'2147483648' overflows signed long range: %ld\n", var6);
  USB.printf("unsigned long: %lu\n", var7);
  USB.printf("ACC x:%d,y:%d,z:%d - bat: %u%c%c%c",
                                                            ACC.getX(),
                                                            ACC.getY(),ACC.getZ(),
                                                            PWR.getBatteryLevel(),
                                                            '%',
                                                            '\r',
                                                            '\n');
  
  USB.println(F("\n----------------------------\n"));

  // A little delay
  delay(5000);
}


Output

H#
Hello world
time: Sun, 00/01/01, 00:00:00
millis: 10
hexadecimal: abcd
decimal: -21555
unsigned int: 43981
It is not possible to print floats: ?
int: 32767
'32768' overflows signed int range: -32768
signed long: 2147483647
'2147483648' overflows signed long range: -2147483648
unsigned long: 4294967295
ACC x:643,y:674,z:705 - temp:20 - bat: 92%

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