/*
-Copyright (c) 2010 Jun WAKO <wakojun@gmail.com>
+Copyright (c) 2010,2011 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,
*/
#include <stdbool.h>
#include <avr/io.h>
+#include <avr/interrupt.h>
#include <util/delay.h>
#include "ps2.h"
-#include "print.h"
#include "debug.h"
+static uint8_t recv_data(void);
static inline void clock_lo(void);
static inline void clock_hi(void);
static inline bool clock_in(void);
static inline uint16_t wait_clock_hi(uint16_t us);
static inline uint16_t wait_data_lo(uint16_t us);
static inline uint16_t wait_data_hi(uint16_t us);
+static inline void idle(void);
+static inline void inhibit(void);
/*
} \
} while (0)
-#define WAIT_NORETRY(stat, us, err) do { \
- if (!wait_##stat(us)) { \
- ps2_error = err; \
- return 0; \
- } \
-} while (0)
-
uint8_t ps2_error = PS2_ERR_NONE;
void ps2_host_init(void)
{
- /* inhibit */
- clock_lo();
- data_hi();
+#ifdef PS2_INT_ENABLE
+ PS2_INT_ENABLE();
+ idle();
+#else
+ inhibit();
+#endif
}
uint8_t ps2_host_send(uint8_t data)
{
- bool parity = true;
+ bool parity;
+RETRY:
+ parity = true;
ps2_error = 0;
- /* request to send */
- clock_lo();
+ /* terminate a transmission if we have */
+ inhibit();
_delay_us(100);
+
/* start bit [1] */
data_lo();
clock_hi();
WAIT(clock_lo, 15000, 1);
/* data [2-9] */
for (uint8_t i = 0; i < 8; i++) {
+ _delay_us(15);
if (data&(1<<i)) {
parity = !parity;
data_hi();
WAIT(clock_lo, 50, 3);
}
/* parity [10] */
+ _delay_us(15);
if (parity) { data_hi(); } else { data_lo(); }
WAIT(clock_hi, 50, 4);
WAIT(clock_lo, 50, 5);
/* stop bit [11] */
+ _delay_us(15);
data_hi();
/* ack [12] */
WAIT(data_lo, 50, 6);
WAIT(clock_lo, 50, 7);
+
+ /* wait for idle state */
WAIT(clock_hi, 50, 8);
WAIT(data_hi, 50, 9);
- /* inhibit device to send */
- clock_lo();
+ uint8_t res = ps2_host_recv_response();
+ if (res == 0xFE && data != 0xFE)
+ goto RETRY;
- return 1;
+ inhibit();
+ return res;
ERROR:
- /* inhibit device to send */
- data_hi();
- clock_lo();
+ inhibit();
return 0;
}
-uint8_t ps2_host_recv(void)
+/* receive data when host want else inhibit communication */
+uint8_t ps2_host_recv_response(void)
{
uint8_t data = 0;
- bool parity = true;
- ps2_error = 0;
/* terminate a transmission if we have */
- clock_lo();
+ inhibit();
_delay_us(100);
/* release lines(idle state) */
- clock_hi();
- data_hi();
+ idle();
+
+ /* wait start bit */
+ wait_clock_lo(2000);
+ data = recv_data();
+
+ inhibit();
+ return data;
+}
+
+#ifndef PS2_INT_VECT
+uint8_t ps2_host_recv(void)
+{
+ return ps2_host_recv_response();
+}
+#else
+/* ring buffer to store ps/2 key data */
+#define PBUF_SIZE 8
+static uint8_t pbuf[PBUF_SIZE];
+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 next = (pbuf_head + 1) % PBUF_SIZE;
+ if (next != pbuf_tail) {
+ pbuf[pbuf_head] = data;
+ pbuf_head = next;
+ } else {
+ print("pbuf: full\n");
+ }
+}
+static inline uint8_t pbuf_dequeue(void)
+{
+ uint8_t val = 0;
+ uint8_t sreg = SREG;
+ cli();
+ if (pbuf_head != pbuf_tail) {
+ val = pbuf[pbuf_tail];
+ pbuf_tail = (pbuf_tail + 1) % PBUF_SIZE;
+ }
+ SREG = sreg;
+ return val;
+}
+
+/* get data received by interrupt */
+uint8_t ps2_host_recv(void)
+{
+ return pbuf_dequeue();
+}
+
+ISR(PS2_INT_VECT)
+{
+PORTC = 0xFF;
+ /* interrupt means start bit comes */
+ pbuf_enqueue(recv_data());
+
+ /* release lines(idle state) */
+ idle();
+ _delay_us(5);
+PORTC = 0x00;
+}
+#endif
+
+
+/*
+static void ps2_reset(void)
+{
+ ps2_host_send(0xFF);
+ if (ps2_host_recv_response() == 0xFA) {
+ _delay_ms(1000);
+ ps2_host_recv_response();
+ }
+}
+*/
+
+/* send LED state to keyboard */
+void ps2_host_set_led(uint8_t led)
+{
+#ifdef PS2_INT_DISABLE
+ PS2_INT_DISABLE();
+#endif
+ ps2_host_send(0xED);
+ ps2_host_recv_response();
+ ps2_host_send(led);
+ ps2_host_recv_response();
+#ifdef PS2_INT_ENABLE
+ PS2_INT_ENABLE();
+ idle();
+#endif
+}
+
+
+/* called after start bit comes */
+static uint8_t recv_data(void)
+{
+ uint8_t data = 0;
+ bool parity = true;
+ ps2_error = 0;
/* start bit [1] */
- WAIT(clock_lo, 2000, 1); // How long should we wait?
+ WAIT(clock_lo, 1, 1);
WAIT(data_lo, 1, 2);
WAIT(clock_hi, 50, 3);
WAIT(data_hi, 1, 9);
WAIT(clock_hi, 50, 10);
- /* inhibit device to send */
- clock_lo();
-
return data;
ERROR:
- /* inhibit device to send */
- data_hi();
- clock_lo();
return 0;
}
-
static inline void clock_lo()
{
PS2_CLOCK_PORT &= ~(1<<PS2_CLOCK_BIT);
while (!data_in() && us) { asm(""); _delay_us(1); us--; }
return us;
}
+
+/* idle state that device can send */
+static inline void idle(void)
+{
+ clock_hi();
+ data_hi();
+}
+
+/* inhibit device to send */
+static inline void inhibit(void)
+{
+ clock_lo();
+ data_hi();
+}
/*
-Copyright (c) 2010 Jun WAKO <wakojun@gmail.com>
+Copyright (c) 2010,2011 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,
extern uint8_t ps2_error;
-/* host side */
+/* host role */
void ps2_host_init(void);
-uint8_t ps2_host_send(uint8_t);
+uint8_t ps2_host_send(uint8_t data);
+uint8_t ps2_host_recv_response(void);
uint8_t ps2_host_recv(void);
+void ps2_host_set_led(uint8_t usb_led);
-/* TODO: device side */
+/* device role */
#endif
# define MOUSEKEY_DELAY_TIME 255
#endif
-/* PS/2 mouse */
+/* PS/2 lines */
#define PS2_CLOCK_PORT PORTD
#define PS2_CLOCK_PIN PIND
#define PS2_CLOCK_DDR DDRD
-#define PS2_CLOCK_BIT 6
+#define PS2_CLOCK_BIT 3
#define PS2_DATA_PORT PORTD
#define PS2_DATA_PIN PIND
#define PS2_DATA_DDR DDRD
#define PS2_DATA_BIT 7
+/* External interrupt for PS/2 clock line (optional) */
+#define PS2_INT_ENABLE() do { \
+ EIMSK |= (1<<INT1); \
+ EICRA |= ((1<<ISC11) | (0<<ISC10)); \
+ EIFR |= (1<<INTF1); \
+} while (0)
+#define PS2_INT_DISABLE() do { \
+ EIMSK &= ~(1<<INT1); \
+} while (0)
+#define PS2_INT_VECT INT1_vect
+
+/* Pin Change interrupt for PS/2 clock line (optional)
+#define PS2_INT_ENABLE() do { \
+ PCMSK2 |= (1<<PCINT22); \
+ PCICR |= (1<<PCIE2); \
+ PCIFR |= (1<<PCIF2); \
+} while (0)
+#define PS2_INT_DISABLE() do { \
+ PCMSK2 &= ~(1<<PCINT22); \
+ PCICR &= ~(1<<PCIE); \
+} while (0)
+#define PS2_INT_VECT PCINT2_vect
+*/
+
#endif
} report_mouse_t;
+extern uint8_t host_keyboard_led;
void host_keyboard_send(report_keyboard_t *report);
void host_mouse_send(report_mouse_t *report);
#include "host_vusb.h"
-#define KBUF_SIZE 8
+#define KBUF_SIZE 16
static report_keyboard_t kbuf[KBUF_SIZE];
static uint8_t kbuf_head = 0;
static uint8_t kbuf_tail = 0;
void host_vusb_keyboard_send()
{
+ while (usbInterruptIsReady() && kbuf_head != kbuf_tail) {
+ usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
+ kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
+ }
+/*
if (kbuf_head != kbuf_tail) {
if (usbInterruptIsReady()) {
usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
}
}
+*/
}
void host_keyboard_send(report_keyboard_t *report)
if (next != kbuf_tail) {
kbuf[kbuf_head] = *report;
kbuf_head = next;
+ print("kbuf: "); phex(kbuf_head); phex(kbuf_tail); print("\n");
+ } else {
+ print("kbuf: full\n");
+ // hmm...
+ /*
+ matrix_init();
+ kbuf_head = 0;
+ kbuf_tail = 0;
+ */
}
}
void host_mouse_send(report_mouse_t *report)
{
- // dirty hack to send twice a loop :(
- //while (!usbInterruptIsReady3()) usbPoll();
-
if (usbInterruptIsReady3()) {
usbSetInterrupt3((void *)report, sizeof(*report));
} else {
+static struct {
+ uint16_t len;
+ enum {
+ NONE,
+ SET_LED
+ } kind;
+} last_req;
+
+uint8_t host_keyboard_led = 0;
+static uchar idleRate;
-static uchar idleRate; /* repeat rate for keyboards, never used for mice */
usbMsgLen_t usbFunctionSetup(uchar data[8])
{
usbRequest_t *rq = (void *)data;
- print("Setup: ");
+ //print("Setup: ");
if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){ /* class request type */
+ /*
print("CLASS: ");
- phex(rq->bRequest);
+ phex(rq->bRequest); print(" ");
+ phex16(rq->wValue.word); print(" ");
+ phex16(rq->wIndex.word); print(" ");
+ phex16(rq->wLength.word); print(" ");
+ */
if(rq->bRequest == USBRQ_HID_GET_REPORT){
- print("GET_REPORT");
+ print(" GET_REPORT");
/* we only have one report type, so don't look at wValue */
usbMsgPtr = (void *)keyboard_report;
return sizeof(*keyboard_report);
}else if(rq->bRequest == USBRQ_HID_GET_IDLE){
- print("GET_IDLE: ");
+ print(" GET_IDLE: ");
phex(idleRate);
usbMsgPtr = &idleRate;
return 1;
}else if(rq->bRequest == USBRQ_HID_SET_IDLE){
idleRate = rq->wValue.bytes[1];
- print("SET_IDLE: ");
+ print(" SET_IDLE: ");
phex(idleRate);
+ }else if(rq->bRequest == USBRQ_HID_SET_REPORT){
+ //print(" SET_REPORT: ");
+ if (rq->wValue.word == 0x0200 && rq->wIndex.word == 0) {
+ last_req.kind = SET_LED;
+ last_req.len = rq->wLength.word;
+ }
+ return USB_NO_MSG; // to get data in usbFunctionWrite
}
print("\n");
}else{
return 0; /* default for not implemented requests: return no data back to host */
}
+uchar usbFunctionWrite(uchar *data, uchar len)
+{
+ if (last_req.len == 0) {
+ return -1;
+ }
+ switch (last_req.kind) {
+ case SET_LED:
+ //print("SET_LED\n");
+ host_keyboard_led = data[0];
+ last_req.len = 0;
+ return 1;
+ break;
+ case NONE:
+ default:
+ return -1;
+ break;
+ }
+ return 1;
+}
+
PROGMEM uchar keyboard_hid_report[] = {
0x05, 0x01, // Usage Page (Generic Desktop),
void host_vusb_keyboard_send(void);
#endif
-
#include "usb_keycodes.h"
#include "host.h"
+#include "ps2.h"
+#include "usb.h"
#include "keyboard.h"
+#include "print.h"
static report_keyboard_t report0;
static report_keyboard_t report1;
static report_keyboard_t *report = &report0;
static report_keyboard_t *report_prev = &report1;
+
+void keyboard_set_led(uint8_t usb_led)
+{
+ uint8_t ps2_led = 0;
+ if (usb_led & (1<<USB_LED_SCROLL_LOCK))
+ ps2_led |= (1<<PS2_LED_SCROLL_LOCK);
+ if (usb_led & (1<<USB_LED_NUM_LOCK))
+ ps2_led |= (1<<PS2_LED_NUM_LOCK);
+ if (usb_led & (1<<USB_LED_CAPS_LOCK))
+ ps2_led |= (1<<PS2_LED_CAPS_LOCK);
+ print("ps2_led: "); phex(ps2_led); print("\n");
+
+ ps2_host_set_led(ps2_led);
+}
+
void keyboard_send(void)
{
host_keyboard_send(report);
#include "host.h"
+void keyboard_set_led(uint8_t led);
void keyboard_send(void);
bool keyboard_has_key(void);
void keyboard_add_mod(uint8_t mod);
#include "host_vusb.h"
#include "timer.h"
+#define DEBUGP_INIT() do { DDRC = 0xFF; } while (0)
+#define DEBUGP(x) do { PORTC = x; } while (0)
+static uint8_t last_led = 0;
int main(void)
{
+ DEBUGP_INIT();
wdt_enable(WDTO_1S);
/* Even if you don't use the watchdog, turn it off here. On newer devices,
* the status of the watchdog (on/off, period) is PRESERVED OVER RESET!
uint8_t fn_bits = 0;
while (1) { /* main event loop */
+ DEBUGP(0x01);
wdt_reset();
usbPoll();
host_vusb_keyboard_send();
+ DEBUGP(0x02);
matrix_scan();
fn_bits = 0;
keyboard_swap_report();
}
}
}
+ DEBUGP(0x03);
layer_switching(fn_bits);
if (matrix_is_modified()) {
keyboard_send();
}
mousekey_send();
+
+ if (last_led != host_keyboard_led) {
+ keyboard_set_led(host_keyboard_led);
+ last_led = host_keyboard_led;
+ }
}
}
#endif
static void matrix_make(uint8_t code);
static void matrix_break(uint8_t code);
-static void ps2_reset(void);
-static void ps2_set_leds(uint8_t leds);
inline
void matrix_init(void)
{
ps2_host_init();
- _delay_ms(1000);
- // flush LEDs
-/*
- ps2_set_leds(1<<PS2_LED_NUM_LOCK);
- _delay_ms(100);
- ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK);
- _delay_ms(100);
- ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK|1<<PS2_LED_SCROLL_LOCK);
- _delay_ms(300);
- ps2_set_leds(0x00);
-*/
-
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
}
uint8_t code;
- code = ps2_host_recv();
- if (code == 0x00) return 0;
- //while ((code = ps2_host_recv())) {
-//phex(code); print(" ");
+ while ((code = ps2_host_recv())) {
switch (state) {
case INIT:
switch (code) {
default:
state = INIT;
}
- //}
-//print("|");
-
- // handle LED indicators
-/*
- static uint8_t prev_leds = 0;
- if (prev_leds != usb_keyboard_leds) {
- uint8_t leds = 0;
- if (usb_keyboard_leds&(1<<USB_LED_SCROLL_LOCK))
- leds |= (1<<PS2_LED_SCROLL_LOCK);
- if (usb_keyboard_leds&(1<<USB_LED_NUM_LOCK))
- leds |= (1<<PS2_LED_NUM_LOCK);
- if (usb_keyboard_leds&(1<<USB_LED_CAPS_LOCK))
- leds |= (1<<PS2_LED_CAPS_LOCK);
-
- ps2_set_leds(leds);
- prev_leds = usb_keyboard_leds;
}
-*/
-
return 1;
}
//print("matrix_break: "); phex(code); print("\n");
}
}
-
-static void ps2_reset(void)
-{
- ps2_host_send(0xFF);
- if (ps2_host_recv() != 0xFA) return;
- _delay_ms(1000);
- if (ps2_host_recv() != 0xAA) return;
-}
-
-static void ps2_set_leds(uint8_t leds)
-{
- ps2_host_send(0xED);
- if (ps2_host_recv() != 0xFA) return; // 0xFA
- ps2_host_send(leds);
- if (ps2_host_recv() != 0xFA) return; // 0xFA
-}
* The value is in milliamperes. [It will be divided by two since USB
* communicates power requirements in units of 2 mA.]
*/
-#define USB_CFG_IMPLEMENT_FN_WRITE 0
+#define USB_CFG_IMPLEMENT_FN_WRITE 1
/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
* transfers. Set it to 0 if you don't need it and want to save a couple of
* bytes.
projects / max / tmk_keyboard.git / commitdiff