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Fix interrupt version of ps2.c

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This commit is contained in:
tmk 2013-11-21 08:10:09 +09:00
parent c6abcb6d89
commit 416a5b849e
2 changed files with 37 additions and 25 deletions
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53
protocol/ps2.c
View file

@ -1,5 +1,5 @@
/*
Copyright 2010,2011 Jun WAKO <wakojun@gmail.com>
Copyright 2010,2011,2012,2013 Jun WAKO <wakojun@gmail.com>
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
@ -43,7 +43,9 @@ POSSIBILITY OF SUCH DAMAGE.
#include "debug.h"
#ifndef PS2_USE_INT
static uint8_t recv_data(void);
#endif
static inline void clock_lo(void);
static inline void clock_hi(void);
static inline bool clock_in(void);
@ -143,6 +145,9 @@ uint8_t ps2_host_send(uint8_t data)
WAIT(clock_hi, 50, 8);
WAIT(data_hi, 50, 9);
#ifdef PS2_USE_INT
PS2_INT_ON();
#endif
res = ps2_host_recv_response();
ERROR:
#ifdef PS2_USE_INT
@ -154,11 +159,15 @@ ERROR:
return res;
}
#ifndef PS2_USE_INT
/* receive data when host want else inhibit communication */
uint8_t ps2_host_recv_response(void)
{
uint8_t data = 0;
#ifdef PS2_USE_INT
PS2_INT_OFF();
#endif
/* terminate a transmission if we have */
inhibit();
_delay_us(100);
@ -173,6 +182,7 @@ uint8_t ps2_host_recv_response(void)
inhibit();
return data;
}
#endif
#ifndef PS2_USE_INT
uint8_t ps2_host_recv(void)
@ -187,9 +197,6 @@ static uint8_t pbuf_head = 0;
static uint8_t pbuf_tail = 0;
static inline void pbuf_enqueue(uint8_t data)
{
if (!data)
return;
uint8_t sreg = SREG;
cli();
uint8_t next = (pbuf_head + 1) % PBUF_SIZE;
@ -215,6 +222,21 @@ static inline uint8_t pbuf_dequeue(void)
return val;
}
static inline bool pbuf_has_data(void)
{
uint8_t sreg = SREG;
cli();
bool has_data = (pbuf_head != pbuf_tail);
SREG = sreg;
return has_data;
}
static inline void pbuf_clear(void)
{
uint8_t sreg = SREG;
cli();
pbuf_head = pbuf_tail = 0;
SREG = sreg;
}
/* get data received by interrupt */
uint8_t ps2_host_recv(void)
@ -229,13 +251,12 @@ uint8_t ps2_host_recv(void)
return pbuf_dequeue();
}
#if 0
#define DEBUGP_INIT() do { DDRC = 0xFF; } while (0)
#define DEBUGP(x) do { PORTC = x; } while (0)
#else
#define DEBUGP_INIT()
#define DEBUGP(x)
#endif
uint8_t ps2_host_recv_response(void)
{
while (!pbuf_has_data()) ;
return pbuf_dequeue();
}
ISR(PS2_INT_VECT)
{
static enum {
@ -256,7 +277,6 @@ ISR(PS2_INT_VECT)
}
state++;
DEBUGP(state);
switch (state) {
case START:
if (data_in())
@ -289,6 +309,7 @@ ISR(PS2_INT_VECT)
if (!data_in())
goto ERROR;
pbuf_enqueue(data);
//phex(data);
goto DONE;
break;
default:
@ -296,7 +317,6 @@ ISR(PS2_INT_VECT)
}
goto RETURN;
ERROR:
DEBUGP(0x0F);
inhibit();
ps2_error = state;
DONE:
@ -309,11 +329,6 @@ RETURN:
#endif
static void ps2_reset(void)
{
ps2_host_send(0xFF);
}
/* send LED state to keyboard */
void ps2_host_set_led(uint8_t led)
{
@ -322,6 +337,7 @@ void ps2_host_set_led(uint8_t led)
}
#ifndef PS2_USE_INT
/* called after start bit comes */
static uint8_t recv_data(void)
{
@ -361,6 +377,7 @@ static uint8_t recv_data(void)
ERROR:
return 0;
}
#endif
static inline void clock_lo()
{

9
protocol/ps2_mouse.c
View file

@ -47,20 +47,15 @@ uint8_t ps2_mouse_init(void) {
phex(rcv); phex(ps2_error); print("\n");
// read completion code of BAT
rcv = ps2_host_recv();
rcv = ps2_host_recv_response();
print("ps2_mouse_init: read BAT: ");
phex(rcv); phex(ps2_error); print("\n");
// read Device ID
rcv = ps2_host_recv();
rcv = ps2_host_recv_response();
print("ps2_mouse_init: read DevID: ");
phex(rcv); phex(ps2_error); print("\n");
// send Enable Data Reporting
rcv = ps2_host_send(0xF4);
print("ps2_mouse_init: send 0xF4: ");
phex(rcv); phex(ps2_error); print("\n");
// send Set Remote mode
rcv = ps2_host_send(0xF0);
print("ps2_mouse_init: send 0xF0: ");