AUSTStudent
New Member
Hello
I want to use temperature sensor, LM35 with PIC16F877. There are many programs to connect LM35 with PIC16F877 and then show the result on LCD. I want to display the temperature reading on the Computer through parallel port, as I would be using Serial Port to connect to a mobile.
I am programming the microcontroller in PicBasic Pro. I am using one pin, AN0 to connect the output of LM35. The A/D conversion is performed. I want to have the result of conversion on PortB (or any other port) and then connect this port to computer through parallel port. The code that I have written is shown below:
********************************************************
define ADC_BITS 8
define ADC_CLOCK 3
define ADC_SAMPLEUS 50
x var byte
TRISA=255
TRISB=0
ADCON1=%10000010
pause 500
loop:
ADCIN 0,x
x = x*100 [As for room temperature, I get 0.26V, so multiplying by 100 to
get 26°C, LM35 produces 10mV/°C]
PortB = x
output PortB
pause 500
goto loop
**********************************************************
Using this code, I dont get the data on PortB. The PortB is all zeros. Can anyone plz tell me the what modification should I do in the program???I dont want to display on the LCD.
Where is the result of A/D conversion stored in PIC16F877, so that I can connect PortB to it. Plz explain in detail and that it can work.
Plz help me. Its very urgent...
Thanx a lot...
May God bless all of us...
I want to use temperature sensor, LM35 with PIC16F877. There are many programs to connect LM35 with PIC16F877 and then show the result on LCD. I want to display the temperature reading on the Computer through parallel port, as I would be using Serial Port to connect to a mobile.
I am programming the microcontroller in PicBasic Pro. I am using one pin, AN0 to connect the output of LM35. The A/D conversion is performed. I want to have the result of conversion on PortB (or any other port) and then connect this port to computer through parallel port. The code that I have written is shown below:
********************************************************
define ADC_BITS 8
define ADC_CLOCK 3
define ADC_SAMPLEUS 50
x var byte
TRISA=255
TRISB=0
ADCON1=%10000010
pause 500
loop:
ADCIN 0,x
x = x*100 [As for room temperature, I get 0.26V, so multiplying by 100 to
get 26°C, LM35 produces 10mV/°C]
PortB = x
output PortB
pause 500
goto loop
**********************************************************
Using this code, I dont get the data on PortB. The PortB is all zeros. Can anyone plz tell me the what modification should I do in the program???I dont want to display on the LCD.
Where is the result of A/D conversion stored in PIC16F877, so that I can connect PortB to it. Plz explain in detail and that it can work.
Plz help me. Its very urgent...
Thanx a lot...
May God bless all of us...