Part Number: EK-TM4C1294XL
Other Parts Discussed in Thread: ENERGIA
Hello Everyone , We have a problem .
We are doing io expander with PCA9698 - NXP Semiconductors . We use Energia v18 to comply . We have an problem about loop . I am just trying to control pins are ready for i2c comminication . Thats why I use LEDs to control . We just get two times logic ''one'' two times logic ''zero'' after that LEDs stay at logic one . They are exiting loop or something . I couldnt solve this problem . They always stay logic ''one'' after some time .
I am using library that is XIO . My code is showed . You dont need to look which I am using . Main problem is that i2c doesnt start to work or doesnt work stable . I try many ways to solve but I couldnt where problem is or what is our problem .
/*************************************************************************
Title: Iowa Scaled Engineering I2C-XIO (PCA9698) Arduino Example
Authors: Nathan D. Holmes <maverick@drgw.net>
File: $Id: $
License: GNU General Public License v3*/
#include <XIO.h>
#include <Wire.h>
XIO xioBoard;
void setup()
{
pinMode(PN_2, OUTPUT);
pinMode(PJ_0, OUTPUT);
digitalWrite(PN_2, LOW);
digitalWrite(PJ_0, HIGH);
// initialize serial communications at 9600 bps:
Serial.begin(9600);
Serial.println("Hello\n");
Wire.setModule(0); //Start i2c
Wire.begin();
// Both of the following initialization examples assume that address jumpers A0, A1, and A2
// on the I2C-XIO are set to high (open, no jumper). If any are set low (jumpered), please
// replace the appropriate configuration value with "LOW" in the "begin()" call
// If you're using a standard Iowa Scaled shield to connect the I2C lines to the Arduino,
// the /IORST line is likely tied to Digital IO line 4 and /OEN is tied to Digital IO line 3.
// Use the initializer below.
// (AD0, AD1, AD2, RESET_PIN ,OUTPUT_ENABLE_PIN )
Serial.println("XIO Started");
// If the /IORST and /OEN lines on the I2C cable aren't connected anywhere, use this initializer
// instead of the one above.
// xioBoard.begin(HIGH, HIGH, HIGH, -1, -1);
}
void loop()
{
xioBoard.begin(LOW, LOW, LOW, PJ_0, PN_2);
// Alternately, the pin configuration can be done much faster (because
// of using a single I2C bus transaction) by doing the following:
xioBoard.xioPinModeCached(XIO_PIN_A0, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A1, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A2, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A3, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A4, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A5, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A6, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_A7, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B0, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B1, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B2, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B3, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B4, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B5, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B6, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_B7, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C0, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C1, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C2, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C3, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C4, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C5, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C6, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_C7, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D0, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D1, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D2, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D3, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D4, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D5, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D6, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_D7, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E0, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E1, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E2, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E3, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E4, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E5, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E6, OUTPUT);
xioBoard.xioPinModeCached(XIO_PIN_E7, OUTPUT);
xioBoard.refreshPinModes();
// These commands blink the output on pin A0 - try it by attaching an LED through a resistor!
xioBoard.xioDigitalWriteCached(XIO_PIN_A0, LOW); //It refers to U1 integrated , pin IO1_0
xioBoard.xioDigitalWriteCached(XIO_PIN_A1, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A2, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A3, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A4, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A5, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A6, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A7, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B0, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B1, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B2, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B3, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B4, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B5, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B6, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B7, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C0, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C1, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C2, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C3, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C4, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C5, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C6, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C7, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D0, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D1, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D2, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D3, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D4, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D5, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D6, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D7, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E0, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E1, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E2, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E3, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E4, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E5, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E6, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E7, HIGH);
xioBoard.refreshIO();
Serial.print("Cycle A\n");
delay(1000);
xioBoard.xioDigitalWriteCached(XIO_PIN_A0, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A1, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A2, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A3, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A4, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A5, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_A6, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_A7, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B0, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B1, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B2, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B3, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B4, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B5, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_B6, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_B7, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C0, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C1, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C2, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C3, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C4, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C5, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_C6, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_C7, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D0, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D1, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D2, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D3, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D4, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D5, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_D6, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_D7, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E0, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E1, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E2, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E3, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E4, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E5, LOW);
xioBoard.xioDigitalWriteCached(XIO_PIN_E6, HIGH);
xioBoard.xioDigitalWriteCached(XIO_PIN_E7, LOW);
xioBoard.refreshIO();
Serial.print("Cycle B\n");
delay(1000);
}
