UART?

With the PIC16F1840 I use the internal UART regularly. The internal oscillator at 32 MHz and the baud rate at 115200, it always works perfectly.
Unfortunately the PIC16F675 has the internal 4 MHz oscillator which is not very accurate and does not have UART.

If you want to use a virtual UART you have to quartz the PIC.
If you send the value of the quartz, I attach a simple routine that allows you to view on a PC terminal what is sent by the PIC. It is not possible to receive commands from the PC.

if you go to the table of page 8 of the datasheet, you see all the connections of the modules of the PIC with the internal pins. Half Bridge of PWM 1 is connected to pin RC2 (P1A) and to RB2 (P1B), not to RC1 and RC2. So: TRISB = 0b11111011; TRISC = 0b11111011; CCP1CON = 0b10001100; // Half-Bridge o...

CCP1CON = 0b00111100; for PWM!

I hope you like it.

Hi Leo73, a few years ago I made some prototypes with the RDA5807. The first uses the PIC16F1829 and Nokia 3310 LCD, receiver complete with SEEK programming, stereo / mono, AFC, bass, etc. With RDS. The second, without programming, uses a PIC12F1840 (the PIC12F1822 is fine too) and OLED 0.99 inc. If...

Thanks Leo73 for advertising my site (without advertising!).
For me the most interesting part of the project concerns the dynamic variables. Information, colors, and more are changed with the status of events. The tutorial in Italian is available.

I agree with paulfjujo.
Unfortunately, free MPLAB X wastes flash memory disproportionately but at the moment we can't do without it ...

Thank you, I don't deserve them.
The PIC16F1825 uses the hardware module, SCL = pin 10 (RC0), SDA = pin 9 (RC1).
You can use the PIC12 library and choose any PIC pins for supported functions.

Library with example updated. Added "void Write_Double_String (const char * string, char Page, char column, char comma_pos)" writes in double height with the ability to write in reverse and add a comma if used to display numbers. See examples on the "main" function. If you only use double height, th...

void Put_Char_16x10(char character, unsigned char colonna, unsigned char Page)
Only one character at a time.

Glad you enjoyed it.
As for the version for PIC16F1825 you find the hex file in the package.

As paulfjujo writes, it is the position of the letter 'E' in RAM memory.
Click on "view statistics" then on "variables". At the "txt" variable you read the memory location assigned to the first character of the message. Increase by 5 and find the return value from the function.

Maybe I'm wrong...