Código Acelerómetro para Codewarrior 10.6

Descripción de funciones

Inicialización de periféricos

ICS

void ICS_FEI(void) {

if (NVICSTRM != 0xFF)
ICSTRM = NVICSTRM;
else
ICSTRM = 0xAD;
ICSC1 = ICSC1_FEI;
ICSC2 = ICSC2_FEI;
ICSSC = ICSSC_FEI;
while (ICSC1_CLKS != ICSSC_CLKST) {}
} //end

KBI

void InitKBI(void) {
// Enable KBI1P[3:2] as interrupt
  KBI1PE = KBI_SW;
  KBI1SC = 0b00000110;
/*               ||||
                 |||+---- KBIMOD = KBI detection mode: 0=edge only
                 ||+----- KBIE   = KBI int enable: 1=enabled
                 |+------ KBACK  = KBI int acknowledge: 1=clr IRQF
                 +------- KBF    = KBI flag
*/
}

SCI

void InitSCI(word baud) {

  SCI1BD = baud;  // set baud
}

Funciones para la transmisión y recepción de datos

Enviar y recibir caracteres

char RecChar(void) {
  byte rec_char;

  if (SCI1S1_RDRF)  
  rec_char = SCI1D;  
  SCI1C2_RE = 1;    
  while(!SCI1S1_RDRF){  };
  rec_char = SCI1D; 
  SendChar((char) rec_char);
  return (char) SCI1D;
}

void SendChar(char s_char) {

SCI1C2 = 0x08;    // enable Tx
while(!SCI1S1_TDRE){ }
SCI1D = (byte) s_char;   // 2nd half of TDRE clear procedure
} //end SendChar
}

Enviar mensaje

void SendMsg(char msg[]) {
  byte i=0;
  char nxt_char;

  SCI1C2 = 0x08;    // enable Tx
  nxt_char = msg[i++];
  while(nxt_char != 0x00) {
   while(!SCI1S1_TDRE){}
   SCI1D = (byte) nxt_char; // 2nd half of TDRE clear procedure
   nxt_char = msg[i++];
  } //end while((SCI1D
} //end SendMsg

Contributors

AlexisG, AriannaG, DanielaB, DiegoGue, RicardoP, SimonR, TomNET