MSP430G2553 I2C Problems

[bmarshall651]

Hey,

I cannot get my I2C code working for the MSP430G2553. I know there is no problem with the JTAG programming as I can make an LED flash. I am trying to communicate with a sensor which doesn't matter as I am unable to see the I2C clock. I have also tried using Spy-Bi-Wire. I cannot see the I2C clock with any of my attempts. I have been using 10k pull ups to 3.3 and then switched them out with 4.7ks. Still no success.

I also could not get it working on the launchpad. TI has not been very helpful. I have posted the code I have been using. Hope someone else can get it working! Thanks in advance.

View attachment main3.zip

 

[ajitnayak]

I used Energia IDE for programming rtc code worked fine for me untill sda and scl pins connected. as soon as i disconnected it get hanged. DO you find any such abnormal behavior working with i2c.














I cannot get my I2C code working for the MSP430G2553. I know there is no problem with the JTAG programming as I can make an LED flash. I am trying to communicate with a sensor which doesn't matter as I am unable to see the I2C clock. I have also tried using Spy-Bi-Wire. I cannot see the I2C clock with any of my attempts. I have been using 10k pull ups to 3.3 and then switched them out with 4.7ks. Still no success.

I also could not get it working on the launchpad. TI has not been very helpful. I have posted the code I have been using. Hope someone else can get it working! Thanks in advance.

View attachment 77932[/QUOTE]

 

[bmarshall651]

Sorry, I haven't been on here in a while. I never got mine working. Switched over to SPI which is dramatically easier to program and work with. Hope you figure it out!!

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Sorry, I haven't been on here in a while. I never got mine working. Switched over to SPI which is dramatically easier to program and work with. Hope you figure it out!!