PIC16F1939 PORT, EUSART and LCD configuration/set up

[PICTRAIL]

Can someone help with the configuration settings for PIC16F1939. I was using PIC16F877A but due to program memory, i had to change to PIC16F1939. After changing the PIC, LCD message is suppose to be "Kindly Enter 6 Digits Password". Below is the display message. Likewise my USART refused to work.
"Gnvgr"rrgffgrg 6/fkgkv"rcsswo"
I would appreciate your support on the configuration word for USART and LCD.
Regards,
Ebby

[robosang]

PIC16F1939, the new enhanced PIC model ? Never use before. But the symtop seem to be wrong baudrate. You should try checking the USART control register in the datasheet of PIC16F1939. It will be good to share with us here. I am sure since it is enhanced, there must be more configuration needed to be done before you can use it correct. Same for the LCD. Though it is just digital output, the register for Analog might be different and you might be using some of the analog pin for LCD.

[PICTRAIL]

Thanks...
PIC16F1939 is actually an enhanced version of PIC16F877A. Having program memory of 16k word,an internal oscillator(32Mhz), EUSART and built in LCD driver. It has 2 configuration words. But the problem is setting the configuration words. Meanwhile after setting the watchdogtimer and Oscillator frequency, the program works well with Protues Simulator. However, it doesnt work well after i downloaded it to the PIC. There was an error message from PICKit 2 programmer "Warning: No configuration word in hex file". This is where i need help.

[Brian Griffin]

Thanks...
PIC16F1939 is actually an enhanced version of PIC16F877A. Having program memory of 16k word,an internal oscillator(32Mhz), EUSART and built in LCD driver. It has 2 configuration words. But the problem is setting the configuration words. Meanwhile after setting the watchdogtimer and Oscillator frequency, the program works well with Protues Simulator. However, it doesnt work well after i downloaded it to the PIC. There was an error message from PICKit 2 programmer "Warning: No configuration word in hex file". This is where i need help.

The processor you mentioned is quite interesting. I may purchase a few of those newer PIC16F and try these.

Also, is the compiler supporting any of those new PICs? On times it may give the warning if the compiler is outdated.

[PICTRAIL]

Hi Brian,
The compiler is ok. It can compile well and it runs well in simulation. Problem occurs only when loading the Hex file to the processor. PIC16F1939 is actually same as PIC16F877A only difference is just that its more enhanced. If you could find anything on its configuration, kindly let me know.
Thanks in advance.

[ober]

Hi, yes PIC16F1939 is the new release enhanced version of PIC16F. With great features.

What is the compiler you are using? Are you using Internal crystal and any divider being use? If possible list out your configuration code.

Also the baud rate setting, I think is different compared to PIC16F877A as highlighted by robosang.

[Brian Griffin]

Hi, yes PIC16F1939 is the new release enhanced version of PIC16F. With great features.

What is the compiler you are using? Are you using Internal crystal and any divider being use? If possible list out your configuration code.

Also the baud rate setting, I think is different compared to PIC16F877A as highlighted by robosang.

You should check out the newer 16Fs, some of them are equipped with a 5-bit DAC, and some of them with a digital-direct synthesis (for signal generation). Another few is the "Configurable Logic Cells" (CLC) modules they have, it's something like a mini PLD where they have an array of gates (not sure which ones) for your disposal.

[PICTRAIL]

Wow! Thanks alot for the input. I'm using MPLAB IDE and Hi Tech Compiler.
Btw, I just want to use it for simple LCD Display, Keypad and UART communication. And yes i'm using the internal oscillator which i set to 20Mhz. The hex code is working in simulation but failed to display correct character on the LCD with the real processor and likewise failed to communicate with the uart.
I tried to check the datasheet for configuration settings but nothing works.

[ober]

Brian, any model that I can try searching for the newer model? Would really like to take a look.

Wow! Thanks alot for the input. I'm using MPLAB IDE and Hi Tech Compiler.
Btw, I just want to use it for simple LCD Display, Keypad and UART communication. And yes i'm using the internal oscillator which i set to 20Mhz. The hex code is working in simulation but failed to display correct character on the LCD with the real processor and likewise failed to communicate with the uart.
I tried to check the datasheet for configuration settings but nothing works.

A look of schematic/hardware is great. The code also should help us.

[PICTRAIL]

Here is a link to its datasheet...
http://ww1.microchip.com/downloads/en/D ... 41574A.pdf