Search found 19 matches

http://www.ccsinfo.com/forum/viewtopic.php?t=59920&start=0&postdays=0&postorder=asc&highlight=us2066

I posted driver code here

The following is code to initialize and use the US2066 OLED display driver using I2C. Code tested on NewHaven Display NHD-0420CW-AB3 display.

#include <33EP512MC504.h>
#FUSES NOWDT ...

I'm sorry, maybe I wasn't clear. If I use the code as shown (which disables the hardware I2C module) then it doesn't beep which indicates the line is high as it should.

If however I comment out th ...

I guess I'm confused then, if I have the following code it does not beep. If I comment out the first line then it beeps.
When I look with the scope both SDA and SCL are pulled high prior to this p ...

So apparently when the hardware I2C module is enabled "input(i2c2_SDA)" will always read '0'. #bit I2C2EN_BIT = 0x0216.15 // I2CEN bit to enable/disable hardware I2C module
#define i2c2 ...

Thanks guys for all your help and insights. The list from adafruit is very helpful.

Hello, I'm trying to come up with an I2C slave address to use in my product. I'd like to find something that hopefully won't interfere with future sensors I might add.

My initial approach was to ...

Thanks Ttelmah and temtronic for all your help!

I added this piece of code before my I2C communication to check for and deal with a SDA stuck low fault condition:
#bit I2C2EN_BIT = 0x0216.15 ...

I checked connections again, everything seems good. To verify, I re-loaded my software I2C program and with the same connections I can read valid data from the sensor.

Ok, I think I figured out th ...

Ok, so this is sort of interesting, so using this as my main:
void main()
{
int ack=0;

set_tris_a(0b1111111111101011);
set_tris_b(0b000000110110 ...

In my searches I did come across the I2C Scanner Program http://www.ccsinfo.com/forum/viewtopic.php?t=49713&highlight=i2c+scanner which seemed like it could come in handy.

I'm not sure it would ...

Thanks Ttelmah, I tried adding the delay as you suggested and I'm getting the same thing.

When I unplug the sensor I can see clk/data on the scope. The levels look the same as when I switch to S ...

It's the Honeywell HIH9000 series humidity sensor.
https://sensing.honeywell.com/sensors/humidity-sensors/HIH9000-series

From the data sheet:
Low Level Output voltage = max 20% Vdd
High Level Ou ...

Thanks for your feedback Ttelmah, I'm still having some problems. I tried to simplify the program as basic as possible (see below). When I compile with the FORCE_SW line I can see the clock on B6 a ...

I'm having trouble with Hardware I2C on a dsPIC33EP512GP502
Compiler v5.075

Based on other forum discussions I was trying to use
#pin_select SCL2OUT = PIN_B6
#pin_select SCL2IN = PIN_B6
#pi ...