P16F1827 and LCD Problems

[Bobw55]

I am new to all of this:
I have triple checked my wiring to the PIC<16F1827> and LCD as follows:

PIC LCD
RB0 = D4
RB1 = D5
RB2 = D6
RB3 = D7
RB4 = RS
RB5 = E
The R/W is tied to ground. VCC = +5 volts.
I have tried just about every sample program I could find on this forum and they will either not compile (Pic Basic Pro) or I could not figure out the correct ports to change around to match my configuration. I am using a PICKIT3 to program with and it does see and properly identify my chip.
Would be wonderful if someone could point me at some proper sample code to just initialize the LCD.... let alone make it say hello.
I have not done any PIC programming, and haven't done much basic programming since the days of my Atari 800. Most of the compile errors I was receiving were stating that "Program" was expected. Newbie error I guess.
Some one please re-aim my compass

[mackrackit]

Can you post the code you have along with your config settings?

[Bobw55]

Here is the latest code I have been trying to build.
And this is the error message I receive :
3 304 Syntax error: Expected "program" but "module" found TEST.mbas

'*Header****************************************** ************/

module TEST
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

unsigned char ch; //
unsigned int adc_rd; // Declare variables
char *text; //
long tlong; //

void main() {
INTCON = 0; // All interrupts disabled
ANSEL = 0x04; // Pin RA2 is configured as an analog input
TRISA = 0x04;
ANSELH = 0; // Rest of pins are configured as digital

Lcd_Init(); // LCD display initialization
Lcd_Cmd(_LCD_CURSOR_OFF); // LCD command (cursor off)
Lcd_Cmd(_LCD_CLEAR); // LCD command (clear LCD)

text = "mikroElektronika"; // Define the first message
Lcd_Out(1,1,text); // Write the first message in the first line
text = "LCD example"; // Define the second message
Lcd_Out(2,1,text); // Define the first message

ADCON1 = 0x82; // A/D voltage reference is VCC
TRISA = 0xFF; // All port A pins are configured as inputs
Delay_ms(2000);

text = "voltage:"; // Define the third message

while (1) {
adc_rd = ADC_Read(2); // A/D conversion. Pin RA2 is an input.
Lcd_Out(2,1,text); // Write result in the second line
tlong = (long)adc_rd * 5000; // Convert the result in millivolts
tlong = tlong / 1023; // 0..1023 -> 0-5000mV
ch = tlong / 1000; // Extract volts (thousands of millivolts)
// from result
Lcd_Chr(2,9,48+ch); // Write result in ASCII format
Lcd_Chr_CP('.');
ch = (tlong / 100) % 10; // Extract hundreds of millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
ch = (tlong / 10) % 10; // Extract tens of millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
ch = tlong % 10; // Extract digits for millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
Lcd_Chr_CP('V');
Delay_ms(1);

Bob

[rmteo]

Try asking here mikroC PRO for PIC General

[mark_s]

Here is the latest code I have been trying to build.
And this is the error message I receive :
3 304 Syntax error: Expected "program" but "module" found TEST.mbas

'*Header****************************************** ************/

module TEST
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

unsigned char ch; //
unsigned int adc_rd; // Declare variables
char *text; //
long tlong; //

void main() {
INTCON = 0; // All interrupts disabled
ANSEL = 0x04; // Pin RA2 is configured as an analog input
TRISA = 0x04;
ANSELH = 0; // Rest of pins are configured as digital

Lcd_Init(); // LCD display initialization
Lcd_Cmd(_LCD_CURSOR_OFF); // LCD command (cursor off)
Lcd_Cmd(_LCD_CLEAR); // LCD command (clear LCD)

text = "mikroElektronika"; // Define the first message
Lcd_Out(1,1,text); // Write the first message in the first line
text = "LCD example"; // Define the second message
Lcd_Out(2,1,text); // Define the first message

ADCON1 = 0x82; // A/D voltage reference is VCC
TRISA = 0xFF; // All port A pins are configured as inputs
Delay_ms(2000);

text = "voltage:"; // Define the third message

while (1) {
adc_rd = ADC_Read(2); // A/D conversion. Pin RA2 is an input.
Lcd_Out(2,1,text); // Write result in the second line
tlong = (long)adc_rd * 5000; // Convert the result in millivolts
tlong = tlong / 1023; // 0..1023 -> 0-5000mV
ch = tlong / 1000; // Extract volts (thousands of millivolts)
// from result
Lcd_Chr(2,9,48+ch); // Write result in ASCII format
Lcd_Chr_CP('.');
ch = (tlong / 100) % 10; // Extract hundreds of millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
ch = (tlong / 10) % 10; // Extract tens of millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
ch = tlong % 10; // Extract digits for millivolts
Lcd_Chr_CP(48+ch); // Write result in ASCII format
Lcd_Chr_CP('V');
Delay_ms(1);

Bob

http://forums.basicmicro.net/feedbac...ead-t9279.html

[gadelhas]

Hi;
That program is writen in MicroC. It will not work in PBP.

Regards

[Bobw55]

I knew it had to be something supidly simple. I have been looking at and trying to understand some of the coding, they all start to look the same to me. Have to see if I can compile it with MPLAB.


THANKS

[gadelhas]

No, you will not be able to compile that program with MPLAB, only with MicroC.

[Archangel]

I am new to all of this:
I have triple checked my wiring to the PIC<16F1827> and LCD as follows:

PIC LCD
RB0 = D4
RB1 = D5
RB2 = D6
RB3 = D7
RB4 = RS
RB5 = E
The R/W is tied to ground. VCC = +5 volts.
I have tried just about every sample program I could find on this forum and they will either not compile (Pic Basic Pro) or I could not figure out the correct ports to change around to match my configuration. I am using a PICKIT3 to program with and it does see and properly identify my chip.
Would be wonderful if someone could point me at some proper sample code to just initialize the LCD.... let alone make it say hello.
I have not done any PIC programming, and haven't done much basic programming since the days of my Atari 800. Most of the compile errors I was receiving were stating that "Program" was expected. Newbie error I guess.
Some one please re-aim my compass

Hello Bob,
To be clear, you DO / Do Not have the Pic Basic Pro compiler from MeLabs?

[Bobw55]

I only have the demo version which does NOT support the 16F1827.
I have:
MPLAB 8.63 PICKIT3
MikroBasic
MikroC-Pro
MikroPro-Suite

I found the Assembly template file for the 16F1827 and will start using that to build with.
From my reading last night I figured out that I have to define or tell the program the pinout of the LCD to the PIC. Set the LCD for 4bit High nibble, then I can send the initialization string to it. (I think)
My first goal is just to get it to Initialize.
Second Print some text.
Third read and display the value of a switch.
I will do this, even if it takes a sledge hammer

[Bobw55]

Managed to get some code written and displayed.

THANK YOU ALL FOR THE POINTERS

Bob

[cncmachineguy]

Awesome Bob!!

[gadelhas]

Well Done Bob!