Transcript MSP430 Project

MSP430 Project
Group Members
Rosie West
Quest Tibbs
John Trinos
Objectives
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To solder components to the board
and program the MSP430
microcontroller to display the message
“Hello” on the LCD.
To create a sensor circuit and program
the MSP430 to display the
measurements taken by the sensor.
MSP430 Overview
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Captures analog signals
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Converts them to digital values
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Processes this data and displays it on
an LCD panel
MSP430
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Low Supply-Voltage Range, 1.8 V to 3.6 V
Ultralow-Power Consumption:
Active Mode: 280 µA at 1 MHz, 2.2 V
Wake-Up From Standby Mode in less than 6 µs
16-Bit RISC Architecture, 125-ns Instruction Cycle Time
12-Bit A/D Converter With Internal Reference, Sample-and-Hold and Autoscan
Feature
16-Bit Timer_B With Seven Capture/Compare-With-Shadow Registers
16-Bit Timer_A With Three Capture/Compare Registers
On-Chip Comparator
Serial Communication Interface (USART), Select Asynchronous UART or
Synchronous SPI by Software:
Two USARTs (USART0, USART1) — MSP430x44x Devices
Brownout Detector
Supply Voltage Supervisor/Monitor With Programmable Level Detection
Serial Onboard Programming, No External Programming Voltage Needed
Programmable Code Protection by Security Fuse
Integrated LCD Driver for Up to 160 Segments
60KB+256B Flash Memory, 2KB RAM
MSP430
The Finished Product
AD590
Temperature Sensor
AD590
Temperature Sensor
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Linear current output: 1 µA/K
Wide temperature range: -55°C to +150°C
Probe compatible ceramic sensor package
2-terminal device: voltage in/current out
Laser trimmed to ±0.5°C calibration
accuracy (AD590M)
Excellent linearity: ±0.3°C over full
range (AD590M)
Wide power supply range: 4 V to 30 V
Sensor isolation from case
Sensor Circuit Approach
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We decided to use both of the sample
temperature sensors to decrease the
amount of noise in the measurement.
We also used the suggestions Dr. Green
gave us in class and used a turnpot resistor
in series with a resistor to produce 1 mV/ºK
going into a noninverting op amp with a
gain of 5, which was achieved by using
resistors so that V0=(1+Rfb/Rin)Vin .
Soldering the
Sensor Circuit
Sensor Circuit
Modifications to Sensor.c
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The only needed adjustments to the
code was to change the A/D converter
value.
Our value was found to be .0605765
instead of .0613
Results