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+ 0.1.06 support Wire.setClock()

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+ reindent
This commit is contained in:
rob tillaart 2014-12-17 20:51:52 +01:00
parent b89c9decb0
commit 2e49f9234a
1 changed files with 94 additions and 88 deletions
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36
sketches/MultiSpeedI2CScanner/MultiSpeedI2CScanner.ino
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@ -1,7 +1,7 @@
//
// FILE: MultiSpeedI2CScanner.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.05
// VERSION: 0.1.06
// PURPOSE: I2C scanner @different speeds
// DATE: 2013-11-05
// URL: http://forum.arduino.cc/index.php?topic=197360
@ -12,14 +12,15 @@
#include <Wire.h>
#include <Arduino.h>
const char version[] = "0.1.05";
const char version[] = "0.1.06";
// scans devices from 50 to 800KHz I2C speeds.
// lower than 50 is not possible
// DS3231 RTC works on 800 KHz. TWBR = 2; (?)
const long allSpeed[] = {
50, 100, 200, 250, 400, 500, 800 };
long speed[sizeof(allSpeed)/sizeof(allSpeed[0])];
50, 100, 200, 250, 400, 500, 800
};
long speed[sizeof(allSpeed) / sizeof(allSpeed[0])];
int speeds;
int addressStart = 0;
@ -35,7 +36,8 @@ bool header = true;
// STATE MACHINE
enum states {
STOP, ONCE, CONT, HELP };
STOP, ONCE, CONT, HELP
};
states state = STOP;
uint32_t startScan;
@ -64,7 +66,7 @@ void loop()
case 'd':
delayFlag = !delayFlag;
Serial.print(F("<delay="));
Serial.println(delayFlag?F("5>"):F("0>"));
Serial.println(delayFlag ? F("5>") : F("0>"));
break;
case 'e':
@ -74,12 +76,12 @@ void loop()
case 'h':
header = !header;
Serial.print(F("<header="));
Serial.println(header?F("yes>"):F("no>"));
Serial.println(header ? F("yes>") : F("no>"));
break;
case 'p':
printAll = !printAll;
Serial.print(F("<print="));
Serial.println(printAll?F("all>"):F("found>"));
Serial.println(printAll ? F("all>") : F("found>"));
break;
case '0':
@ -102,7 +104,7 @@ void loop()
break;
}
switch(state)
switch (state)
{
case ONCE:
I2Cscan();
@ -146,7 +148,7 @@ void setAddress()
void setSpeed(char sp)
{
switch(sp)
switch (sp)
{
case '1':
speed[0] = 100;
@ -164,9 +166,9 @@ void setSpeed(char sp)
speed[0] = 800;
speeds = 1;
break;
case '0':
speeds = sizeof(allSpeed)/sizeof(allSpeed[0]);
for (int i=0; i< speeds; i++)
case '0': // reset
speeds = sizeof(allSpeed) / sizeof(allSpeed[0]);
for (int i = 0; i < speeds; i++)
{
speed[i] = allSpeed[i];
}
@ -250,7 +252,11 @@ void I2Cscan()
for (uint8_t s = 0; s < speeds ; s++)
{
TWBR = (F_CPU/(speed[s]*1000) - 16)/2;
#if ARDUINO >= 158
Wire.setClock(speed[s] * 1000);
#else
TWBR = (F_CPU / (speed[s] * 1000) - 16) / 2;
#endif
Wire.beginTransmission (address);
found[s] = (Wire.endTransmission () == 0);
fnd |= found[s];
@ -274,7 +280,7 @@ void I2Cscan()
for (uint8_t s = 0; s < speeds ; s++)
{
Serial.print(F("\t"));
Serial.print(found[s]? F("V"):F("."));
Serial.print(found[s] ? F("V") : F("."));
}
Serial.println();
}