PropWare
3.0.0.229
C++ objects and CMake build system for Parallax Propeller
Simple-Libraries
Learn
Examples
Circuits
Measure Volts.c
1
/*
2
Measure Volts.c
3
4
Make voltmeter style measurements with the Propeller Activity Board.
5
6
http://learn.parallax.com/propeller-c-simple-circuits/measure-volts
7
*/
8
9
#include "
simpletools.h
"
// Include simpletools
10
#include "
adcDCpropab.h
"
// Include adcDCpropab
11
12
int
main
()
// Main function
13
{
14
adc_init
(21, 20, 19, 18);
// CS=21, SCL=20, DO=19, DI=18
15
16
float
v2, v3;
// Voltage variables
17
18
while
(1)
// Loop repeats indefinitely
19
{
20
v2 =
adc_volts
(2);
// Check A/D 2
21
v3 =
adc_volts
(3);
// Check A/D 3
22
23
putChar
(
HOME
);
// Cursor -> top-left "home"
24
print
(
"A/D2 = %f V%c\n"
, v2,
CLREOL
);
// Display volts
25
print
(
"A/D3 = %f V%c\n"
, v3,
CLREOL
);
// Display volts
26
27
pause
(100);
// Wait 1/10 s
28
}
29
}
adc_init
void adc_init(int csPin, int sclPin, int doPin, int diPin)
Initialize A/D converter.
Definition:
adcDCpropab.c:21
HOME
#define HOME
HOME character (1) sends SimpleIDE Terminal's cursor to top-left "home" position.
Definition:
simpletools.h:233
pause
void pause(int time)
Delay cog from moving on to the next statement for a certain length of time.
Definition:
libws2812.c:125
simpletools.h
This library provides convenient functions for a variety of microcontroller I/O, timing,...
print
int print(const char *format,...) __attribute__((format(printf
Print format "..." args to the default simple terminal device. The output is limited to 256 bytes.
main
int main(void)
Definition:
GraphicsTest.c:20
adcDCpropab.h
Measure ADC124S021 as either a voltage or a raw, 12-bit5 adc value. This library is intended for DC m...
adc_volts
float adc_volts(int channel)
Get a voltmeter style floating point voltage measurement from one of the A/D converter's input channe...
Definition:
adcDCVpropab.c:17
putChar
void putChar(char c)
Print a char to the debug port.
Definition:
putChar.c:30
CLREOL
#define CLREOL
CLREOL character (11) erases all SimpleIDE Terminal characters to the right of the cursor.
Definition:
simpletools.h:323
Generated on Fri May 20 2022 16:48:04 for PropWare by
1.8.17