Arduino to HCS12 Serial input POrt output..!!!!!!!!

Looney — Sat, 23 Jul 2011 05:39:22 GMT

Can someone help me tranlate the following code I found for Arduino to HC12 language... I am pretty much trying receive information using the serial input on the microcontroller to read the information and then process the following information back to PORTB. the project consist of a GUI that sends information using the arrow pad on the keyboard and translate that to the controller 4 ports which is Port B which will send 3.3v to another chip which will control the direction of a robot. I have attached some sample codes that I want to use in a word document.. that can be reviewed.. Please help.. I have attached what we have so far...

Re: Arduino to HCS12 Serial input POrt output..!!!!!!!!

Looney — Sat, 23 Jul 2011 05:41:10 GMT

Here is a sample code of what I am trying to accomplish from teh arduino..

#define DEBUG 0

#define WAIT_FOR_START 1

unsigned char incomingByte = 0;

unsigned long loop_count = 0;

unsigned char horn = 32;

unsigned char redLED = 64;

unsigned char greenLED = 128;

unsigned char forward = 1;

unsigned char backward = 2;

unsigned char left = 4;

unsigned char right = 8;

unsigned char PORTB_val;

unsigned char PORTD_val;

unsigned char in_char = 0;

void setup()

{

//PORTD = digital IO 0-7

//horn, redLED, greenLED

pinMode(5, OUTPUT); // sets the digital pin as output

pinMode(6, OUTPUT); // sets the digital pin as output

pinMode(7, OUTPUT); // sets the digital pin as output

//PORTB = digital IO 8 - 13

//right, left, backwards, forward

pinMode(8, OUTPUT); // sets the digital pin as output

pinMode(9, OUTPUT); // sets the digital pin as output

pinMode(10, OUTPUT); // sets the digital pin as output

pinMode(11, OUTPUT); // sets the digital pin as output

Serial.begin(9600); // set up Serial library at 9600 bps

PORTD = redLED; // turn on the red LED

#if DEBUG

flash_led(3,500);

#endif

wait_for_start(); //Waits for startup message from router serial port

//continues after receiving it.

}

void flash_led(unsigned int count, unsigned int rate)

{

// debug routine that flashes an LED

int n_count = 0;

while (n_count < count)

{

n_count++;

digitalWrite(13, HIGH); // sets the LED on

delay(rate); // waits for a bit

digitalWrite(13, LOW); // sets the LED off

delay(rate); // waits for a bit

}

char get_char()

{

//Function that waits for a character from the serial port

//If none are received, it returns 0.

//The timeout is so that if the router stops sending data to the microcontroller,

//the micrcontroller will stop driving the car, rather than just going forever with

//the last command. Timeout is around 250mS.

while (loop_count < 30000)

{

loop_count++;

if (Serial.available() > 0)

{

incomingByte = Serial.read();

loop_count = 0;

return incomingByte;

}

loop_count = 0;

#if DEBUG

Serial.print('X', BYTE);

#endif

return 0;

}

unsigned char wait_for_start()

{

//Waits for startup message from router serial port

#if WAIT_FOR_START

#if DEBUG

Serial.println("Waiting...");

#endif

while(1)

{

if (get_char() == 'j' && get_char() == 'b' && get_char() == 'p' && get_char() == 'r' && get_char() == 'o')

{

#if DEBUG

Serial.print("Passcode Accepted");

#endif

return 0;

}

#endif

}

void loop()

{

//Function that processes input from serial port and drives the car based

//on that input.

in_char = get_char();

//Split byte received in to upper and lower halves.

PORTB_val = in_char & 0x0F;

PORTD_val = in_char & 0xF0;

//Make sure the greenLED is turned on now.

if ((PORTD_val & greenLED) == 0)

{

PORTD_val = PORTD_val + greenLED;

}

//The following IF statements are sanity checks to make sure that FORWARD and BACKWARD cannot be on at the same time

//and that LEFT and RIGHT can't be on at the same time.

if ((PORTB_val & (left + right)) == (left + right))

{

PORTB_val = PORTB_val - right;

}

if ((PORTB_val & (forward + backward)) == (forward + backward))

{

PORTB_val = PORTB_val - backward;

}

//Write the processed values to the ports.

PORTD = PORTD_val;

PORTB = PORTB_val;

#if DEBUG

Serial.print(PORTD, HEX);

Serial.print(PORTB, HEX);

#endif

}

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Arduino to HCS12 Serial input POrt output..!!!!!!!!

Re: Arduino to HCS12 Serial input POrt output..!!!!!!!!