Serial: PIC18F45K22 -> (Arduino) Uno = works | Uno -> PIC18F45K22 = fails Why?

[mackrackit]

Is this the one you are looking for?
http://www.picbasic.co.uk/forum/cont...rial-backpacks

[Demon]

Are you able to communicate with your PC?

The problem can be at either ends. It would help to know if the data is sent properly so you can concentrate on the culprit.

Check your PBP manual on how to set up the link, or search here.

Do you have a logic probe?

Robert

[PerlNoerd]

Hi All

All right. Thanks for the response.

It's a bit embarrassing and I'm pretty confused for a sudden does it all as it should without I know what caused it. It's very simple setup but for several days it has teased me.

Test set-up:



Here's the test code I'm using:

18F45K22:

#CONFIG
    CONFIG  FOSC = INTIO67        ; Internal oscillator block
    CONFIG  PLLCFG = ON           ; 
    CONFIG  PRICLKEN = OFF        ; Primary clock can be disabled by software
    CONFIG  FCMEN = OFF           ; Fail-Safe Clock Monitor disabled
    CONFIG  IESO = OFF            ; Oscillator Switchover mode disabled
    CONFIG  PWRTEN = OFF          ; Power up timer disabled
    CONFIG  BOREN = SBORDIS       ; Brown-out Reset enabled in hardware only (SBOREN is disabled)
    CONFIG  BORV = 190            ; VBOR set to 1.90 V nominal
    CONFIG  WDTEN = ON            ; WDT is always enabled. SWDTEN bit has no effect
    CONFIG  WDTPS = 32768         ; 1:32768
    CONFIG  CCP2MX = PORTC1       ; CCP2 input/output is multiplexed with RC1
    CONFIG  PBADEN = OFF          ; PORTB<5:0> pins are configured as digital I/O on Reset
    CONFIG  CCP3MX = PORTB5       ; P3A/CCP3 input/output is multiplexed with RB5
    CONFIG  HFOFST = ON           ; HFINTOSC output and ready status are not delayed by the oscillator stable status
    CONFIG  T3CMX = PORTC0        ; T3CKI is on RC0
    CONFIG  P2BMX = PORTD2        ; P2B is on RD2
    CONFIG  MCLRE = EXTMCLR       ; MCLR pin enabled, RE3 input pin disabled
    CONFIG  STVREN = ON           ; Stack full/underflow will cause Reset
    CONFIG  LVP = OFF             ; Single-Supply ICSP disabled
    CONFIG  XINST = OFF           ; Instruction set extension and Indexed Addressing mode disabled (Legacy mode)
    CONFIG  DEBUG = OFF           ; Disabled
    CONFIG  CP0 = OFF             ; Block 0 (000800-001FFFh) not code-protected
    CONFIG  CP1 = OFF             ; Block 1 (002000-003FFFh) not code-protected
    CONFIG  CP2 = OFF             ; Block 2 (004000-005FFFh) not code-protected
    CONFIG  CP3 = OFF             ; Block 3 (006000-007FFFh) not code-protected
    CONFIG  CPB = OFF             ; Boot block (000000-0007FFh) not code-protected
    CONFIG  CPD = OFF             ; Data EEPROM not code-protected
    CONFIG  WRT0 = OFF            ; Block 0 (000800-001FFFh) not write-protected
    CONFIG  WRT1 = OFF            ; Block 1 (002000-003FFFh) not write-protected
    CONFIG  WRT2 = OFF            ; Block 2 (004000-005FFFh) not write-protected
    CONFIG  WRT3 = OFF            ; Block 3 (006000-007FFFh) not write-protected
    CONFIG  WRTC = OFF            ; Configuration registers (300000-3000FFh) not write-protected
    CONFIG  WRTB = OFF            ; Boot Block (000000-0007FFh) not write-protected
    CONFIG  WRTD = OFF            ; Data EEPROM not write-protected
    CONFIG  EBTR0 = OFF           ; Block 0 (000800-001FFFh) not protected from table reads executed in other blocks
    CONFIG  EBTR1 = OFF           ; Block 1 (002000-003FFFh) not protected from table reads executed in other blocks
    CONFIG  EBTR2 = OFF           ; Block 2 (004000-005FFFh) not protected from table reads executed in other blocks
    CONFIG  EBTR3 = OFF           ; Block 3 (006000-007FFFh) not protected from table reads executed in other blocks
    CONFIG  EBTRB = OFF           ; Boot Block (000000-0007FFh) not protected from table reads executed in other blocks
#ENDCONFIG


DEFINE OSC 64
                         
' Setup PLL for 64 MHZ
OSCCON = 110100 ; 16 mhz (NOTE: SCS=0 so PLL works)
OSCTUNE.6 = 1 ;  PLL enable Mhz * 4 

ANSELA = 0
ANSELB = 0
ANSELC = 0
ANSELD = 0
ANSELE = 0

' Set receive register to receiver enabled
DEFINE HSER_RCSTA    90h
' Set transmit register to transmitter enabled
DEFINE HSER_TXSTA    20h
' Set baud rate
DEFINE HSER_BAUD    9600
DEFINE HSER_CLROERR 1  ' Auto clear over-run errors

char Var byte  ' Storage for serial character

    Pause 2000

    Hserout ["PIC - UP RUNNING :-)", 13, 10] ' Send text followed by carriage return and linefeed

start:
       pause 10
       toggle PORTC.0  ' Alive LED 

mainloop:
       Hserin 10000, start, [char]    ' Get a char from serial port
       pause 10
       Hserout [char]        ' Send char out serial port
       Goto mainloop        ' Do it all over again
   
End

Arduino Uno (only the chip - ATmega328p):

int led = 13;

int incomingByte = 0;   // for incoming serial data

void setup() {
  Serial.begin(9600);               
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
  Serial.println("Arduino UNO - UP RUNNING...");  
}

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   
  delay(100);               
  digitalWrite(led, LOW);    
  delay(900);               

  if (Serial.available() > 0) {
    while (Serial.available()) {
      Serial.print((char)Serial.read());
    }
    Serial.println();
  }
}