ECE 3567 3567 Labor orator ory # # 2 Analog t og to Di - - PowerPoint PPT Presentation

ECE 3567 3567

Labor

• rator
• ry #

# 2 Analog t

• g to Di

Digital C Converter and The Temperature M Mode

• Dr. Gregg Chapman

2018

• 1. Download C files and add them to your Lab #1 project
• 2. Write the Init_ADC12() routine in ADC12.c
• 3. Edit the ADC12 Interrupt Service Routine
• 4. Comment out the ADC12_VECTOR in unused_interrupts.c
• 5. Add the Temperature Mode and LCD Commands to parse_Command()
• 6. Add the decoding to change the LED color according to the temperature map
• 7. Modify the infinite while loop in main.c to run tempSensor() whenever there is a Timer A0 ISR, But ONLY

if you are in the Temperature Mode.

• 8. Modify the infinite while loop in main.c to run update_RGB() whenever there is a Timer A0 ISR, but only

if the LED_Test AND the LED_Control are enabled. 9. Remove the update_RGB at the end of parse_Command

• 10. Add Init_ADC12() in main.c
• 11. Add tempSensorModeInit() in main.c

Steps to Performing the Laboratory

• 1. Download C files and add them to your Lab #1 project

The download should include the following

• files. Be sure to add them ALL to your project.
• TempSensorMode.c
• tempSensorModeInit()
• tempSensor()
• displayTemp()
• TempSensorMode.h
• myLCD.c
• myLCD.h
• ADC12.c
• Init_ADC12()
• ADC12_ISR()

• 2. Write the Init_ADC12() routine in ADC12.c

• 3. Edit the ADC12 Interrupt Service Routine

• 4. Comment out the ADC12_VECTOR in unused_interrupts.c

• 5. Add the Temperature Mode and LCD Commands

to parse_Command()

TE – Temperature Mode Enable

To set up the temperature mode, you must:

• Disable all other Modes and their Control variables:

LED_Test , T_Control, RC_Control

• Enable the Temperature Sensor Mode (T_Measure)
• Enable the LED and LCD Control
• Clear the temperature variables: k, sum, deg
• Clear the Flash variables: toggle, Flash
• Clear the current color from the LED
• Clear the LCD_Display

TD – Temperature Mode Disable

• Disable the Control Variables for LCD and LED and

Temperature

• Disable Temperature Sensor Mode (T_Measure)
• Turn OFF the LED (use a function)
• Clear the LCD_Display

TC – Temperature in Celsius

• Verify that tempUnit is not already set to Celsius
• If it’s not, change it to the Celsius state.
• Re-initialize k, sum, and deg.

(WARNING – Don’t call tempSensorModeInit() to do this. That function get’s modified in the next lab)

TF – Temperature in Fahrenheit

• Verify that tempUnit is not already set to Fahrenheit
• If it’s not, change it to the Fahrenheit state.
• Re-initialize k, sum, and deg.

(WARNING – Don’t call tempSensorModeInit() to do this. That function get’s modified in the next lab)

DE – Enable the LCD Display

• Use the variable LCD_Control to enable and disable the LCD Display
• Clear the LCD when enabling or disabling

DD – Disable the LCD Display

• Use the variable LCD_Control to enable and disable the LCD Display
• Clear the LCD when enabling or disabling

• 6. Add the decoding to change the LED color according to the

temperature map

Should be added at the beginning of update_RGB()

• 7. Modify the infinite while loop in main.c to run tempSensor()

if(T_Measure == TRUE) // Temperature Measurement Mode { tempSensor(); }

Should be added to run if the ISR_Flag is set.

• 8. Modify the infinite while loop in main.c to run update_RGB()

else if((LED_Test == TRUE) && (LED_Control == TRUE)) { update_RGB(); }

Should be added to run if the ISR_Flag is set.

• 9. Remove the update_RGB at the end of parse_Command

It now runs in the main() on the TimerA0 ISR

• 10. Add Init_ADC12() in main.c

• 11. Add tempSensorModeInit() in main.c

Laboratory #2 Checkpoints

• 1. Have the Lab Monitors check your Init_ADC12() routine
• 2. Temperature Commands work correctly (TE, TC, TF, TD)
• 3. LED Colors work correctly from room temperature down to 65 degrees Fahrenheit

( use cold spray)

• 4. LCD Enable and Disable Works (DE, DD)
• 5. LED Enable and Disable still works (LD, LE)