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%
----------------------------
Last modified 2yr ago
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