juani_c

I'm trying to comunicate with a FXOS8700CQ. (Energia 13-MSP430G2553) When I use this code: Wire.beginTransmission(0x1E); // Initialize the Tx buffer Wire.write(FXOS8700CQ_OUT_X_MSB); // Put slave register address in Tx buffer Wire.endTransmission(false); // Send the Tx buffer, but send a restart to keep connection alive Wire.requestFrom(0x1E, 6); // Read bytes from slave register address i=0; while (Wire.available()) { dest[i++] = Wire.read(); } I get what it's seen in the bottom of the image. The second time the addres is sent it should be a "read" inste

That's a good idea! Either that or some sort of box.

Finally made it. I end up using an adapter board for the MSP430. more pics...

The variables are globally decleared. Here are some screen captures of the before and after the sqrt() function, the stack is close so that's probably the problem. Thanks!

That file shows the same values that I see in the Memory Allocation. The thing is why it shows me only 344 bytes, from that I get that I still have RAM to do other things...

I wasn't using the HM. I enable it now and the code seems to use the same amount of memory. The execution is faster, from aprox. [90]ms to 13[ms] (@default DCO = ~625 KHz)

I'm testing Mahony's algorithms for attitude estimation and I'm using a Launchpad with a MSP430g2553. In the code I'm using there are two functions; one calculate the attitude from accelerometer and gyro data (IMU) and the other one add magnetometer data (AHRS). I tested first the IMU and worked OK. Then I tested the AHRS and I couldn't make it work. What I could find through debugging was this: In the top of the program there are four variables q0=1, q1=0, q2=0 and q3=0 and in the algorithm there is a sqrt() function, it seems that for some reason the sqrt() function overwrite the values i

I should have been clearer, I have an MSP-430EXPG2 rev 1.3. I use it a while ago to program an MSP430F5510 wich I think is newer than the F5528, so I think it should work.

If I made this programmer, can I use a Launchpad to upload the firmware to the MSP430F5528? Do you think it is possible to make a single side board design? thinking in a homemade pcb....

jelou!!! y bienvenido

Suppose you have an application like SimpliciTi that says:" low memory needs(<8kB flash and 1kB RAM depending on the configuration)", you also have in your program the Petit FAT file system: "Very small RAM consumption (44 bytes work area + certain stack), Very small code size (2K-4K bytes)", finally you have some inertial sensors to calculate some angles, like in Nine-Axis Sensor Fusion Using the Direction Cosine Matrix Algorithm on the MSP430F5xx Family AppNote, where you need RAM ~ 0.75 kB, Flash ~ 11.7 kB. Summarizing: flash 8kB + RAM 1 kB flash 4kB + RAM 44 B flash 11.7

Yes, I did. The default baud rate is 115200 anyway, and that's the one that is giveing me problems. I migth have to settle for 9600.

Yes, 9600 worked OK. 19200 showed some spikes, but much less than the picture (thats spikes are just the way the graphic software interprets the wrong data). For a few moments in one of my many test it worked OK with 115200. I just have to find out what I did different...

I'm trying to communicate an MSP430 to my laptop through a KC-21 module. Below is a capture of the data with the msp430 using a 115200 baudrate. As you can see it has some issues. I tested a few things: Sending data with the msp430 at 115200 and an FT232 => THIS WORKS OK Sending data from the computer through the FT232 to the BT module and back to the PC, all at 115200 => THIS WORKS OK Sending data with the msp430 at 9600 and the BT module => THIS WORKS OK So it seems that the problem is isolated to the MCU working at 115200 with the module. I had problems in the pas

Just found it: