brelliott18

I've noticed the same problem. It's intermittent which makes it even more annoying. WINDOWS 10 is a disaster in other areas as well eg old Kindle software. I only got WINDOWS 10 because my Windows 7 machine decided to load itself with Windows 10 whilst the machine was unattended. Luckily I still have another system with Windows 7. I also have an XP system - Why this Operating system needed changing I do not know - Oh , yes I do - MONEY .

SUCCESS ! using Mods as above plus twi.c and twi.sw.c from this link :- http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/p/529036/1924562#1924562 plus adding :- Wire.setModule (0) before Wire.begin() in Void Setup() in both Master and Slave :- I have managed to send two characters from the Master to turn off the Red Led in a loop on the Slave. BIG Thanks again to B@TTO. Wouldn't it be perhaps a good idea if these files were updated and placed in the Energia GitHub Repository ? How is this process carried out ?

It appears the latest twi.c file from GITHUB does NOT appear to incorporate B@TTO modifications:- This is my understanding of the mods required noted by //******************** Is this correct ? [ If so , it would seem a good idea for ENERGIA to update this file, surely ?? - How does one get this to happen ? ] [ The other code needed is to insert Wire.setModule(0) before Wire.begin , so I'm told ] ****************LATEST TWI.C [ FROM LINE 839 ] **************************** /* Slave transmit mode (twi_stat

Replaced files - Makes no difference. Ran your program to return addresses of serial devices - after removing ' Wire.setModule(0) ' line which crashes it. The program returned a continuous stream of addresses from 0 to 127 - Is this a sign that the MSP430 itself cannot act as slave because it doesn't recognise any addresses ( not even ' 0 ' ) , perhaps ? Regards

Not yet - will give it a try - THANKS !!!

Thanks for the reply Yes, I have. The point is that identical code on the Arduinos works but not on MSP430s So either the delays need changing ? - I'm using 3 seconds on the MASTER between begin and end transmissions and about 0.5 second on the SLAVE - I have changed these but it doesn't seem to a make any difference. OR : Perhaps the Registers are not being set up correctly but that's a pure guess. PS I can't the C language - I'd like to do everything in Forth in possible.

Latest : Have used exactly the same code with ARDUINOs UNO and NANO instead of 2 X MSP430 2553 [ used Version 17 of Energia for MSP devices ]....... ..............The code WORKS on these ARDUINO devices !!! [ I simply send 'H' and ' L' chars to turn LED on / off using Wire.begin then Wire.beginTransmission then Wire.endTransmission plus delays for MASTER . For SLAVE ( another MSP430 2553 ) I use Wire.onReceive( receiveEvent) then VOID receiveEvent ( int howMany) then ' while Wire.available and Wire.Read ' etc. ] Use 4K7 pull ups on p1.7 , P1.6 plus Common Groun

Thanks for the advice. Have inserted ' Wire.setModule(0) as suggested - This just seems to prevent begin and end transmission loops working altogether. One problem seems to be waveforms coming from SDA / SCL - either not present or very noisy.

PS I have removed GREEN LED P1.6 link !

Trying to use I2C to connect 2 X MSP430. Using Wire.write ('H') and 'L ' char to send to Slave via 4K7 pull-ups to turn on / off slave led. Using Wire.onReceive(receiveEvent) , void receiveEvent ( int howMany ) etc. Have added delays at various places. Have programmed then removed PC connections, use separate PSU ReceiveEvent appears not to work. Have old analogue scope - clock /data signals appear to be ' very dirty ' and ' noisy ' Change to 10K pull ups ? Any suggestions ? Thanks

I found this information previously but the reference to the camera device led nowhere. Thanks anyway

Any news on this ? - can't seem to find it if it exists

Solved - thanks for help anyway. Thought I could use P1_1 and P1_2 but couldn't - used P1_3 upwards then P2 instead - works fine !

This is part of the Arduino code I found for keypads [ keyboard.h ]. How should ths be altered [ if necessary ] to run on the MSP430G2553 ? Assuming I use p1.0 to p1.7 ??? for the 8 wires coming from the keypad [ 4 X 4 ] #define INPUT_PULLUP 0x2 - does this need changing ? #ifndef INPUT_PULLUP #warning "Using pinMode() INPUT_PULLUP AVR emulation" #define INPUT_PULLUP 0x2 #define pinMode(_pin, _mode) _mypinMode(_pin, _mode) #define _mypinMode(_pin, _mode) \ do { \ if(_mode == INPUT_PULLUP) \ pinMode(_p

So where is this information for the Msp430G2553 [ NOT the Arduino - Those didn't work ] ?

I have recently bought a LaunchPad 2553. I am a comparitive novice. I am trying to add a 4 X 4 matrix keypad. I copied some code from an Arduino source and changed #Arduino references to #Energia. I commented out a #WProgram statement - what is this ? The code compiled and verified OK . I connected the 8 wires from keypad to p1.0 -p1.7 [ and tried other ports as well ]. The output was sent to the Serial monitor via Serial.println( key ). I could only get any output by pressing many keys at the same time. I looked at the keyboard.h file but it went nothing to me. How do

Have just started with MSP430G2553. Downloaded 0101E0013 correctly but I am missing the FIRMATA examples /code. Any suggestions ? Thanks

Looks great ! Where / when can I get one in the UK ?