/*No I2C numero 0x96 tem um termometro tipo TMP100 da TI */
short letemp()
{
short Temp;
int k, i;
escreve_i2c(0,-1);
/* Fase 2: Le a temperatura (2 bytes) */
I22CONCLR = 0xff;
I22CONSET = 0x60;
k=2; Temp=0; i=1000;
do {
switch(I22STAT){ /* Terminou START; envia endereco */
case 0x08: I22CONCLR=0x20;
case 0x20: /* NACK do endreco: reenvia */
I22DAT = ADDRTMP+1; /* Endereco i2c */
I22CONCLR=8; i=1000; break;
case 0x40:
I22CONSET=4; I22CONCLR=8; i=1000; break;
/* Recebeu dado: Le dado */
case 0x50: Temp = (Temp << 8) | I22DAT;
/* Ultimo dado: Envia STOP */
if(!(--k)) I22CONSET=0x10;
I22CONCLR=8; i=1000; break;
}
} while(k && --i);
return Temp;
}
/* Inicializa o canal 2 de I2C */
void ini_i2c(void)
{
PCONP |=0x04000080; /* Liga energia do I2C0 e I2C2 */
PINSEL0 &= 0xffafffff;
PINSEL0 |= 0x00a00000; /* Seleciona pinos do SDA2 e SCL2 */
I22CONCLR = 0xff;
I22CONSET = 0x40; /* Habilita o I2C-2 um modo mestre */
I22SCLH = 100; /* Tempo alto do SCL */
I22SCLL = 100; /* Tempo baixo do SCL */
escreve_i2c(1,0x60);
}
static void
write_card(int off, char *buf)
{
LCD_command(1);
LCD_puts(INSCAR, sizeof(INSCAR));
DPRINTF(INSCAR);
while (FIO0PIN & (1 << 21));
buf[0] = off;
escreve_i2c(0xa0, buf, 17);
}
int main(void)
{
unsigned char buffer[17]; // Where we are reading to
buffer[16] = '\0'; // Terminating string
int page = 0xa0;
int offset = 0;
init_timer0(); // LCD needs timer0 to function
LCDinit(); // Initializing LCD
ini_i2c(); // Initializing i2c
/******************** MAIN LOOP *********************/
while(1) {
offset &= 0xff;
buffer[0] = offset;
escreve_i2c(page, buffer, 1); /* tell i2c we want to read from page + offset */
if(le_i2c(page, buffer, 16)) { /* If we failed to read 16 bytes */
LCDclear();
LCDgoto(0, 0);
LCDputs("Problema de leitura");
LCDgoto(1, 0);
LCDputs(buffer);
} else {
LCDgoto(0, 0); // Go to first line, first column
LCDputs("Pg = ");
LCDputchar(page + '0'); // Prints page number as char
LCDgoto(0, 8); // Go to the second half of first line
LCDputs("Of = ");
LCDputchar(offset + '0'); // Prints offset as char
LCDgoto(1, 0); // Fisrt column of the second line
LCDputs(buffer); // Prints buffer
}
}
return 0;
}
static void
read_card(int off, char *buf)
{
LCD_command(1);
LCD_puts(INSCAR, sizeof(INSCAR));
DPRINTF(INSCAR);
while (FIO0PIN & (1 << 21));
DPRINTF("AQUI1\n");
/* Depois de qualquer operacao efetua uma leitura */
buf[0] = off;
/* Escreve o offset (endereco no smcard) */
escreve_i2c(0xa0, buf, 1);
DPRINTF("AQUI2\n");
/* Le 16 bytes a partir do offset */
le_i2c(0xa0, buf, 16);
buf[16] = '\0';
DPRINTF("AQUI3\n");
for (x = 0; x < 16; x++)
PrByte(buf[x]);
}
