Forum Post: RE: adc of msp430
When your pin is floating you will measure remaining charge on the pin from when the sensor was connected any crap from the surrounding that couples into the pin A high impedance floating pin is never...
View ArticleForum Post: RE: MSP430F5419A EXTERNAL CRYSTAL NOT WORKING
Read SLAA322 (PDF). Show the schematics and the board layout.
View ArticleForum Post: RE: MSP-EXP430FR4133 Button S2
According to the schematic, buttons S1 and S2 are just connections between P1.2/P2.6 and ground. This means that the GPIO pins need pull-up resistors to have a defined state when the button is not...
View ArticleForum Post: RE: MSP-EXP430FR4133 Button S2
Sammy, when using buttons, the OUT-register is used in combination with the REN-register to set a pull-up/down-resistor. Can you show your complete code? S1 is on P1.2, S2 on P2.6 - both have no...
View ArticleForum Post: RE: add an external extra 128KB Flash memory and LCD or OLED with...
Stanley, there are different ways to connect external peripherals to the MSP. Most of them will be connected via a serial connection like SPI or I²C. Some use parallel interface. If I was you I would...
View ArticleForum Post: RE: Reset button problem msp432
Luis, can you show your code? When resetting the micro it will start from the beginning. If you were using a FRAM device and store the state of your sequence in a variable that isn't initialized at...
View ArticleForum Post: RE: Problem with functions running in flash in tms320f28027
Just check your flash based cmd file and also try "re-building" the project instead of a simple building. Regards, Gautam
View ArticleForum Post: I2C FIFO Not Resetting
Hi there, I'm trying to use I2C to communicate between two LAUNCHXL-F28069M 's. In my test project I do a whole bunch of "writes" from the master board to the slave board, and then a whole bunch of...
View ArticleForum Post: RE: USB enumeratiom
Long ago - man feared sailing, "Off the end of the earth!" And you, Sir - now find yourself minus normal/customary "sea chart" - do you not? What to do? If/when "home base" returns (almost empty) might...
View ArticleForum Post: RE: adc of msp430
i am making ecg acquisition system. so i am using disposable electrode as sensor
View ArticleForum Post: RE: F28m35h52c1 configuring USB as SLAVE
Hi Adam, --I am directly Importing the usb_dev_serial tried to see signal on D+ and D- but can find any signal . Before checking the signal I am sending Data on Uart0 --Through JTAG emulator able to...
View ArticleForum Post: RE: adc of msp430
>i am making ecg acquisition system. so i am using disposable electrode as sensor Then you shall read www.ti.com/.../slaa486a.pdf Particular ECG have frontend which does not float ADC inputs while...
View ArticleForum Post: RE: i2c clock lost one pulse when communicate with the mpu9250
Hi Amit, The threshold is 1.5 volts. I use the Dupont wires to connect the mpu9250 modules with the launchpad, and only the mpu9250 module is connected to the launchpad. Currently my pull-up resistors...
View ArticleForum Post: RE: i2c clock lost one pulse when communicate with the mpu9250
HI cb1, Thanks for your reply. I'm moving the project from the STM32F4 to the launchpad is that the motion driver demo, which is provided by the InvenSense, is developed at the STM32F4 discovery board,...
View ArticleForum Post: RE: i2c clock lost one pulse when communicate with the mpu9250
Thank you - so motor/actuator are disqualified as issue's source. Did this project work properly when you employed that other, MCU? Do you know the current requirements of your sensor board? Might it...
View ArticleForum Post: RE: i2c clock lost one pulse when communicate with the mpu9250
Hello Gaojun As cb1 suggested using a lower resistance would make the edges sharper. Also can you enable the Glitch Filter for the TM4C123. Note that the Glitch Filter API in the i2c.c is for TM4C129....
View ArticleForum Post: multisampling
how to take many samples of voltages or current within a PWM cycle
View ArticleForum Post: RE: MSP432 not going up to full 48MHz
Paulo, do you just assume that the clock is wrong based on the register settings or did you measure the HSMCLK at P4.4? There is msp432p401_cs_03 Device configuration for operation @ MCLK = DCO = 48MHz...
View ArticleForum Post: RE: MSP432 LAUNCHPAD doesn't work
Eduardo, the LaunchPad comes pre-programmed, so normally the demo program should work even without the drivers. This is the blink example that measures the time between your button presses and adjusts...
View ArticleForum Post: Setting interrupt sequence msp430g25531.
1. Is the following sequence correct so setup interrupt -pulup in msp430g2553 __interrupt void Port_1(void) { if(P1IFG & (u8_t)BIT3) { P1IFG &= (u8_t)(~BIT3); /* P1.3 IFG cleared */ P1OUT ^=...
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