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Found 2 results

  1. Hi! I am developing a simple accelerometer with the MSP-EXP430FR5739. This board is populated with a 3-axis accelerometer: ADXL330. No additional HW is needed. The MCU program does: ADC:Samples data from CH_0 to CH_14 in Repeat-Sequence-of-Channels Mode Sample Rate: ~ 20 Hz/Channel DMA UART:HW UART (TX only) with 9600 baud. This 9600 baud is limited by the emulator circuit. UART TX data1 = ADC_CH_12 = ACC_X; sample "622-X" UART TX data2 = ADC_CH_13 = ACC_Y; sample "509-Y" UART TX data3 = ADC_CH_14 = ACC_Z; sample "511-Z" LEDs: LED_TX and LED_ADC The PC application does: Calculate the 3 acceleration components (g_x, g_y, g_z) from the ADC data and the CALIBRATION data Calculate the magnitude of G; |G| = sqrt(g_x^2 + g_y^2 + g_z^2); Displays data CALIBRATION data must be enter by the user once at the beginning. The user has to rotate slowly the board in every 3 direction (and opposite) to find the maximum (+1g) and the minimum (-1g) ADC values of the 3 axis. Enter this 3*2=6 ADC data to the 6 white textboxes. If the CALIBRATION data are correct then |G| must be 1.00 (static acceleration of gravity). . The TX data can be viewed with putty too: Requirements: MSP-EXP430FR5739 board Code Composer Studio 5.4 to compile the MCU source file:ACC Demo v03_main.c Windows OS with .Net framework 4 to run the PC app: ACC Demo v03_Release.zip (extract and run "ACC Demo v03.exe"). The CPU usage may be high when PC application receives data. I will try to reduce this in the next version.
  2. I'm using MSP-EXP430FR5739 with CC3000 and I did my own library for RF connectors (Just add the 2.3 in pins_energia.h). I used WiFi.begin(ssid) and after of this doesn't do any instruction (still there). Are there problems with CC3000 and energia? Is there something to fix it?
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