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Change error no and clean debug code

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tmk 2014-02-10 06:43:43 +09:00
parent c4efadf68a
commit 54a06c2520
2 changed files with 17 additions and 25 deletions
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39
protocol/ibm4704.c
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@ -20,13 +20,7 @@ uint8_t ibm4704_error = 0;
void ibm4704_init(void)
{
// POR
//_delay_ms(2500);
//while ( 0xA3 != ibm4704_recv() ) ;
inhibit();
DDRD |= 1<<3;
PORTD &= ~(1<<3);
}
uint8_t ibm4704_send(uint8_t data)
@ -37,44 +31,43 @@ uint8_t ibm4704_send(uint8_t data)
/* Request to send */
idle();
clock_lo();
PIND |= 1<<3;
/* wait for Start bit(Clock:lo/Data:hi) */
WAIT(data_hi, 300, 0x30);
/* Data bit */
for (uint8_t i = 0; i < 8; i++) {
WAIT(clock_hi, 100, 0x31);
WAIT(clock_hi, 100, 0x40+i);
//_delay_us(5);
PIND |= 1<<3;
if (data&(1<<i)) {
parity = !parity;
data_hi();
} else {
data_lo();
}
WAIT(clock_lo, 100, 0x32);
WAIT(clock_lo, 100, 0x48+i);
}
/* Parity bit */
WAIT(clock_hi, 100, 4);
PIND |= 1<<3;
WAIT(clock_hi, 100, 0x34);
if (parity) { data_hi(); } else { data_lo(); }
WAIT(clock_lo, 100, 5);
WAIT(clock_lo, 100, 0x35);
/* Stop bit */
WAIT(clock_hi, 100, 4);
WAIT(clock_hi, 100, 0x34);
data_hi();
/* End */
WAIT(data_lo, 100, 6);
WAIT(data_lo, 100, 0x36);
inhibit();
_delay_us(200); // wait to recover clock to hi
return 0;
ERROR:
inhibit();
if (ibm4704_error >= 0x30) {
xprintf("x%02X ", ibm4704_error);
}
_delay_us(200); // wait to recover clock to hi
return -1;
}
@ -110,10 +103,10 @@ uint8_t ibm4704_recv(void)
_delay_us(5); // wait for line settles
/* start bit */
WAIT(clock_lo, 100, 1); // wait for keyboard to send
WAIT(data_hi, 100, 2); // can be delayed that long
WAIT(clock_lo, 100, 0x11); // wait for keyboard to send
WAIT(data_hi, 100, 0x12); // can be delayed that long
WAIT(clock_hi, 100, 3); // first rising edge which can take longer
WAIT(clock_hi, 100, 0x13); // first rising edge which can take longer
/* data */
for (uint8_t i = 0; i < 8; i++) {
WAIT(clock_hi, 100, 0x20+i);
@ -126,22 +119,22 @@ uint8_t ibm4704_recv(void)
}
/* parity */
WAIT(clock_hi, 100, 7);
WAIT(clock_hi, 100, 0x17);
if (data_in() != parity) {
ibm4704_error = IBM4704_ERR_PARITY;
goto ERROR;
}
WAIT(clock_lo, 150, 8);
WAIT(clock_lo, 150, 0x18);
/* stop bit */
WAIT(clock_hi, 100, 9);
WAIT(data_lo, 1, 9);
WAIT(clock_hi, 100, 0x19);
WAIT(data_lo, 1, 0x19);
inhibit();
_delay_us(200); // wait to recover clock to hi
return data;
ERROR:
if (ibm4704_error > 2) {
if (ibm4704_error > 0x12) {
xprintf("x%02X ", ibm4704_error);
}
inhibit();

1
protocol/ibm4704.h
View File

@ -5,7 +5,6 @@ Copyright 2014 Jun WAKO <wakojun@gmail.com>
#define IBM4704_H
#define IBM4704_ERR_NONE 0
#define IBM4704_ERR_STARTBIT 1
#define IBM4704_ERR_PARITY 0x70