We assume that an LED is connected to port B bit 0. If you connect it to a
different port or bit, change the macros below:
*/
-#define LED_PORT_DDR DDRB
-#define LED_PORT_OUTPUT PORTB
-#define R_BIT 4
-#define G_BIT 3
-#define B_BIT 1
#define BUTTON_PIN 4
+#define SIMPLE_COUNTER 1
+
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include "usbdrv.h"
#include "oddebug.h" /* This is also an example for using debug macros */
#include "requests.h" /* The custom request numbers we use */
-#include "special_functions.h"
-
-void update_pwm(void);
+#include "hotp.h"
+#if !SIMPLE_COUNTER
+#include "percnt2.h"
+#endif
+#include "usb_keyboard_codes.h"
/* ------------------------------------------------------------------------- */
/* ----------------------------- USB interface ----------------------------- */
/* ------------------------------------------------------------------------- */
+
+#define STATE_WAIT 0
+#define STATE_SEND_KEY 1
+#define STATE_RELEASE_KEY 2
+#define STATE_NEXT 3
+
PROGMEM const char usbHidReportDescriptor[USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH] = {
- 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
- 0x09, 0x06, // USAGE (Keyboard)
- 0xa1, 0x01, // COLLECTION (Application)
- 0x75, 0x01, // REPORT_SIZE (1)
- 0x95, 0x08, // REPORT_COUNT (8)
- 0x05, 0x07, // USAGE_PAGE (Keyboard)(Key Codes)
- 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)(224)
- 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)(231)
- 0x15, 0x00, // LOGICAL_MINIMUM (0)
- 0x25, 0x01, // LOGICAL_MAXIMUM (1)
- 0x81, 0x02, // INPUT (Data,Var,Abs) ; Modifier byte
- 0x95, 0x01, // REPORT_COUNT (1)
- 0x75, 0x08, // REPORT_SIZE (8)
- 0x81, 0x03, // INPUT (Cnst,Var,Abs) ; Reserved byte
- 0x95, 0x05, // REPORT_COUNT (5)
- 0x75, 0x01, // REPORT_SIZE (1)
- 0x05, 0x08, // USAGE_PAGE (LEDs)
- 0x19, 0x01, // USAGE_MINIMUM (Num Lock)
- 0x29, 0x05, // USAGE_MAXIMUM (Kana)
- 0x91, 0x02, // OUTPUT (Data,Var,Abs) ; LED report
- 0x95, 0x01, // REPORT_COUNT (1)
- 0x75, 0x03, // REPORT_SIZE (3)
- 0x91, 0x03, // OUTPUT (Cnst,Var,Abs) ; LED report padding
- 0x95, 0x06, // REPORT_COUNT (6)
- 0x75, 0x08, // REPORT_SIZE (8)
- 0x15, 0x00, // LOGICAL_MINIMUM (0)
- 0x25, 0x65, // LOGICAL_MAXIMUM (101)
- 0x05, 0x07, // USAGE_PAGE (Keyboard)(Key Codes)
- 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))(0)
- 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)(101)
- 0x81, 0x00, // INPUT (Data,Ary,Abs)
- 0xc0 // END_COLLECTION
+ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
+ 0x09, 0x06, /* USAGE (Keyboard) */
+ 0xa1, 0x01, /* COLLECTION (Application) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x95, 0x08, /* REPORT_COUNT (8) */
+ 0x05, 0x07, /* USAGE_PAGE (Keyboard)(Key Codes) */
+ 0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl)(224) */
+ 0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI)(231) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
+ 0x81, 0x02, /* INPUT (Data,Var,Abs) ; Modifier byte */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x08, /* REPORT_SIZE (8) */
+ 0x81, 0x03, /* INPUT (Cnst,Var,Abs) ; Reserved byte */
+ 0x95, 0x05, /* REPORT_COUNT (5) */
+ 0x75, 0x01, /* REPORT_SIZE (1) */
+ 0x05, 0x08, /* USAGE_PAGE (LEDs) */
+ 0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */
+ 0x29, 0x05, /* USAGE_MAXIMUM (Kana) */
+ 0x91, 0x02, /* OUTPUT (Data,Var,Abs) ; LED report */
+ 0x95, 0x01, /* REPORT_COUNT (1) */
+ 0x75, 0x03, /* REPORT_SIZE (3) */
+ 0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) ; LED report padding */
+ 0x95, 0x06, /* REPORT_COUNT (6) */
+ 0x75, 0x08, /* REPORT_SIZE (8) */
+ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */
+ 0x25, 0x65, /* LOGICAL_MAXIMUM (101) */
+ 0x05, 0x07, /* USAGE_PAGE (Keyboard)(Key Codes) */
+ 0x19, 0x00, /* USAGE_MINIMUM (Reserved (no event indicated))(0) */
+ 0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application)(101) */
+ 0x81, 0x00, /* INPUT (Data,Ary,Abs) */
+ 0xc0 /* END_COLLECTION */
};
-/* Keyboard usage values, see usb.org's HID-usage-tables document, chapter
- * 10 Keyboard/Keypad Page for more codes.
- */
-#define MOD_CONTROL_LEFT (1<<0)
-#define MOD_SHIFT_LEFT (1<<1)
-#define MOD_ALT_LEFT (1<<2)
-#define MOD_GUI_LEFT (1<<3)
-#define MOD_CONTROL_RIGHT (1<<4)
-#define MOD_SHIFT_RIGHT (1<<5)
-#define MOD_ALT_RIGHT (1<<6)
-#define MOD_GUI_RIGHT (1<<7)
-
-#define KEY_A 4
-#define KEY_B 5
-#define KEY_C 6
-#define KEY_D 7
-#define KEY_E 8
-#define KEY_F 9
-#define KEY_G 10
-#define KEY_H 11
-#define KEY_I 12
-#define KEY_J 13
-#define KEY_K 14
-#define KEY_L 15
-#define KEY_M 16
-#define KEY_N 17
-#define KEY_O 18
-#define KEY_P 19
-#define KEY_Q 20
-#define KEY_R 21
-#define KEY_S 22
-#define KEY_T 23
-#define KEY_U 24
-#define KEY_V 25
-#define KEY_W 26
-#define KEY_X 27
-#define KEY_Y 28
-#define KEY_Z 29
-#define KEY_1 30
-#define KEY_2 31
-#define KEY_3 32
-#define KEY_4 33
-#define KEY_5 34
-#define KEY_6 35
-#define KEY_7 36
-#define KEY_8 37
-#define KEY_9 38
-#define KEY_0 39
-
-#define KEY_F1 58
-#define KEY_F2 59
-#define KEY_F3 60
-#define KEY_F4 61
-#define KEY_F5 62
-#define KEY_F6 63
-#define KEY_F7 64
-#define KEY_F8 65
-#define KEY_F9 66
-#define KEY_F10 67
-#define KEY_F11 68
-#define KEY_F12 69
-
-#define NUM_LOCK 1
-#define CAPS_LOCK 2
-#define SCROLL_LOCK 4
+static uint16_t secret_length_ee EEMEM = 0;
+static uint8_t secret_ee[32] EEMEM;
+static uint8_t reset_counter_ee EEMEM = 0;
+static uint8_t digits_ee EEMEM = 8;
-
-#define UNI_BUFFER_SIZE 16
+#if SIMPLE_COUNTER
+static uint32_t counter_ee EEMEM = 0;
+#endif
static uint8_t dbg_buffer[8];
+static uint8_t secret[32];
+static uint16_t secret_length_b;
+static char token[10];
+
+#define UNI_BUFFER_SIZE 16
-static union {
+static union __attribute__((packed)) {
uint8_t w8[UNI_BUFFER_SIZE];
uint16_t w16[UNI_BUFFER_SIZE/2];
uint32_t w32[UNI_BUFFER_SIZE/4];
void* ptr[UNI_BUFFER_SIZE/sizeof(void*)];
} uni_buffer;
-static uint8_t uni_buffer_fill;
static uint8_t current_command;
typedef struct {
uint8_t keycode[6];
} keyboard_report_t;
-#define STATE_WAIT 0
-#define STATE_SEND_KEY 1
-#define STATE_RELEASE_KEY 2
-
-
-static keyboard_report_t keyboard_report; // sent to PC
-static uchar idleRate; /* in 4 ms units */
+static keyboard_report_t keyboard_report; /* report sent to the host */
+static uchar idleRate; /* in 4 ms units */
static uchar key_state = STATE_WAIT;
-volatile static uchar LED_state = 0xff; // received from PC
+volatile static uchar LED_state = 0xff;
/* ------------------------------------------------------------------------- */
-void buildReport(uchar send_key) {
- keyboard_report.modifier = 0;
+static
+void memory_clean(void) {
+ memset(secret, 0, 32);
+ secret_length_b = 0;
+}
- if(send_key >= 'a' && send_key <= 'z')
- keyboard_report.keycode[0] = 4 + (send_key - 'a');
- else
- keyboard_report.keycode[0] = 0;
+#define NO_CHECK 1
+
+static
+uint8_t secret_set(void){
+#if !NO_CHECK
+ uint8_t r;
+ union {
+ uint8_t w8[32];
+ uint16_t w16[16];
+ } read_back;
+#endif
+ const uint8_t length_B = (secret_length_b + 7) / 8;
+
+ eeprom_busy_wait();
+ eeprom_write_block(secret, secret_ee, length_B);
+#if !NO_CHECK
+ eeprom_busy_wait();
+ eeprom_read_block(read_back.w8, secret_ee, length_B);
+ r = memcmp(secret, read_back.w8, length_B);
+ memory_clean();
+ memset(read_back.w8, 0, 32);
+ if (r) {
+ return 1;
+ }
+#endif
+ eeprom_busy_wait();
+ eeprom_write_word(&secret_length_ee, secret_length_b);
+#if !NO_CHECK
+ eeprom_busy_wait();
+ r = eeprom_read_word(&secret_length_ee) == secret_length_b;
+ memory_clean();
+ *read_back.w16 = 0;
+ if (!r) {
+ return 1;
+ }
+#else
+ memory_clean();
+#endif
+
+ return 0;
}
-uint8_t read_button(void){
- uint8_t t,v=0;
- t = DDRB;
- DDRB &= ~(1<<BUTTON_PIN);
- PORTB |= 1<<BUTTON_PIN;
- PORTB &= ~(1<<BUTTON_PIN);
- v |= PINB;
- DDRB |= t&(1<<BUTTON_PIN);
- PORTB &= ~(t&(1<<BUTTON_PIN));
- v >>= BUTTON_PIN;
- v &= 1;
- v ^= 1;
- return v;
+static
+void counter_inc(void){
+#if SIMPLE_COUNTER
+ uint32_t t;
+ eeprom_busy_wait();
+ t = eeprom_read_dword(&counter_ee);
+ eeprom_busy_wait();
+ eeprom_write_dword(&counter_ee, t + 1);
+#else
+ percnt_inc(0);
+#endif
}
-void init_temperature_sensor(void){
- ADMUX = 0x8F;
- ADCSRA = 0x87;
+static
+void counter_reset(void) {
+ uint8_t reset_counter;
+ eeprom_busy_wait();
+ reset_counter = eeprom_read_byte(&reset_counter_ee);
+#if SIMPLE_COUNTER
+ eeprom_busy_wait();
+ eeprom_write_dword(&counter_ee, 0);
+#else
+ percnt_reset(0);
+#endif
+ eeprom_busy_wait();
+ eeprom_write_byte(&reset_counter_ee, reset_counter + 1);
}
-uint16_t read_temperture_sensor(void){
- ADCSRA |= 0x40;
- while(ADCSRA & 0x40)
- ;
- return ADC;
+static
+void counter_init(void) {
+#if !SIMPLE_COUNTER
+ eeprom_busy_wait();
+ if (eeprom_read_byte(&reset_counter_ee) == 0) {
+ counter_reset();
+ }
+ percnt_init(0);
+#endif
+}
+
+static
+void token_generate(void) {
+ counter_inc();
+ eeprom_busy_wait();
+ eeprom_read_block(secret, secret_ee, 32);
+ eeprom_busy_wait();
+#if SIMPLE_COUNTER
+ hotp(token, secret, eeprom_read_word(&secret_length_ee), eeprom_read_dword(&counter_ee), eeprom_read_byte(&digits_ee));
+#else
+ hotp(token, secret, eeprom_read_word(&secret_length_ee), percnt_get(0), eeprom_read_byte(&digits_ee));
+#endif
+ memory_clean();
+}
+
+
+static
+void buildReport(uchar send_key) {
+ keyboard_report.modifier = 0;
+
+ switch (send_key) {
+ case '1' ... '9':
+ keyboard_report.keycode[0] = KEY_1 + (send_key-'1');
+ break;
+ case '0':
+ keyboard_report.keycode[0] = KEY_0;
+ break;
+ default:
+ keyboard_report.keycode[0] = 0;
+ }
+}
+
+static
+int8_t button_get_debounced(volatile uint8_t debounce_count) {
+ uint8_t v;
+ v = PINB & _BV(BUTTON_PIN);
+ while (debounce_count-- && v == (PINB & _BV(BUTTON_PIN))) {
+ ;
+ }
+ if (debounce_count) {
+ return -1;
+ }
+ return v ? 0 : 1;
}
usbMsgLen_t usbFunctionSetup(uchar data[8])
usbRequest_t *rq = (usbRequest_t *)data;
if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) { /* class request type */
switch(rq->bRequest) {
- case USBRQ_HID_GET_REPORT: // send "no keys pressed" if asked here
- // wValue: ReportType (highbyte), ReportID (lowbyte)
- usbMsgPtr = (void *)&keyboard_report; // we only have this one
+ case USBRQ_HID_GET_REPORT: /* send "no keys pressed" if asked here */
+ /* wValue: ReportType (highbyte), ReportID (lowbyte) */
+ usbMsgPtr = (void *)&keyboard_report; /* we only have this one */
keyboard_report.modifier = 0;
keyboard_report.keycode[0] = 0;
return sizeof(keyboard_report);
- case USBRQ_HID_SET_REPORT: // if wLength == 1, should be LED state
+ case USBRQ_HID_SET_REPORT: /* if wLength == 1, should be LED state */
if (rq->wLength.word == 1) {
current_command = LED_WRITE;
return USB_NO_MSG;
}
return 0;
- case USBRQ_HID_GET_IDLE: // send idle rate to PC as required by spec
+ case USBRQ_HID_GET_IDLE: /* send idle rate to PC as required by spec */
usbMsgPtr = &idleRate;
return 1;
- case USBRQ_HID_SET_IDLE: // save idle rate as required by spec
+ case USBRQ_HID_SET_IDLE: /* save idle rate as required by spec */
idleRate = rq->wValue.bytes[1];
return 0;
}
}
if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_VENDOR) {
current_command = rq->bRequest;
+ usbMsgPtr = uni_buffer.w8;
switch(rq->bRequest)
{
+ case CUSTOM_RQ_SET_SECRET:
+ secret_length_b = rq->wValue.word;
+ if (secret_length_b > 256) {
+ secret_length_b = 256;
+ }
+ uni_buffer.w8[0] = 0;
+ return USB_NO_MSG;
+ case CUSTOM_RQ_INC_COUNTER:
+ counter_inc();
+ return 0;
+ case CUSTOM_RQ_GET_COUNTER:
+#if SIMPLE_COUNTER
+ eeprom_busy_wait();
+ uni_buffer.w32[0] = eeprom_read_dword(&counter_ee);
+#else
+ uni_buffer.w32[0] = percnt_get(0);
+#endif
+ return 4;
+ case CUSTOM_RQ_RESET_COUNTER:
+ counter_reset();
+ return 0;
+ case CUSTOM_RQ_GET_RESET_COUNTER:
+ eeprom_busy_wait();
+ uni_buffer.w8[0] = eeprom_read_byte(&reset_counter_ee);
+ return 1;
+ case CUSTOM_RQ_SET_DIGITS:
+ if (rq->wValue.bytes[0] > 9) {
+ rq->wValue.bytes[0] = 9;
+ }
+ eeprom_busy_wait();
+ eeprom_write_byte(&digits_ee, rq->wValue.bytes[0]);
+ return 0;
+ case CUSTOM_RQ_GET_DIGITS:
+ eeprom_busy_wait();
+ uni_buffer.w8[0] = eeprom_read_byte(&digits_ee);
+ return 1;
+ case CUSTOM_RQ_GET_TOKEN:
+ token_generate();
+ usbMsgPtr = (usbMsgPtr_t)token;
+ return strlen(token);
case CUSTOM_RQ_PRESS_BUTTON:
key_state = STATE_SEND_KEY;
return 0;
usbMsgPtr = dbg_buffer;
return len;
}
- case CUSTOM_RQ_READ_MEM:
- usbMsgPtr = (uchar*)rq->wValue.word;
- return rq->wLength.word;
- case CUSTOM_RQ_WRITE_MEM:
- case CUSTOM_RQ_EXEC_SPM:
- uni_buffer_fill = 4;
- uni_buffer.w16[0] = rq->wValue.word;
- uni_buffer.w16[1] = rq->wLength.word;
- return USB_NO_MSG;
- case CUSTOM_RQ_READ_FLASH:
- uni_buffer.w16[0] = rq->wValue.word;
- uni_buffer.w16[1] = rq->wLength.word;
- return USB_NO_MSG;
case CUSTOM_RQ_RESET:
soft_reset((uint8_t)(rq->wValue.word));
break;
case CUSTOM_RQ_READ_BUTTON:
- uni_buffer.w8[0] = read_button();
- usbMsgPtr = uni_buffer.w8;
+ uni_buffer.w8[0] = button_get_debounced(25);
return 1;
- case CUSTOM_RQ_READ_TMPSENS:
- uni_buffer.w16[0] = read_temperture_sensor();
- usbMsgPtr = uni_buffer.w8;
- return 2;
}
}
case LED_WRITE:
if (data[0] != LED_state)
LED_state = data[0];
- return 1; // Data read, not expecting more
+ return 1; /* Data read, not expecting more */
+ case CUSTOM_RQ_SET_SECRET:
+ {
+ if (uni_buffer.w8[0] < (secret_length_b + 7) / 8) {
+ memcpy(&secret[uni_buffer.w8[0]], data, len);
+ uni_buffer.w8[0] += len;
+ }
+ if (uni_buffer.w8[0] >= (secret_length_b + 7) / 8) {
+ secret_set();
+ return 1;
+ }
+ return 0;
+ }
case CUSTOM_RQ_SET_DBG:
if(len > sizeof(dbg_buffer)){
len = sizeof(dbg_buffer);
}
memcpy(dbg_buffer, data, len);
return 1;
- case CUSTOM_RQ_WRITE_MEM:
- memcpy(uni_buffer.ptr[0], data, len);
- uni_buffer.w16[0] += len;
- return !(uni_buffer.w16[1] -= len);
- case CUSTOM_RQ_EXEC_SPM:
- if(uni_buffer_fill < 8){
- uint8_t l = 8 - uni_buffer_fill;
- if(len<l){
- len = l;
- }
- memcpy(&(uni_buffer.w8[uni_buffer_fill]), data, len);
- uni_buffer_fill += len;
- return 0;
- }
- uni_buffer.w16[1] -= len;
- if (uni_buffer.w16[1] > 8) {
- memcpy(uni_buffer.ptr[0], data, len);
- uni_buffer.w16[0] += len;
- return 0;
- } else {
- memcpy(&(uni_buffer.w8[uni_buffer_fill]), data, len);
- exec_spm(uni_buffer.w16[2], uni_buffer.w16[3], uni_buffer.ptr[0], data, len);
- return 1;
- }
default:
return 1;
}
return 0;
}
uchar usbFunctionRead(uchar *data, uchar len){
- uchar ret = len;
- switch(current_command){
- case CUSTOM_RQ_READ_FLASH:
- while(len--){
- *data++ = pgm_read_byte((uni_buffer.w16[0])++);
- }
- return ret;
- default:
- break;
- }
return 0;
}
/* do a binary search: */
do {
OSCCAL = trialValue + step;
- x = usbMeasureFrameLength(); // proportional to current real frequency
- if(x < targetValue) // frequency still too low
+ x = usbMeasureFrameLength(); /* proportional to current real frequency */
+ if(x < targetValue) /* frequency still too low */
trialValue += step;
step >>= 1;
} while(step > 0);
/* We have a precision of +/- 1 for optimum OSCCAL here */
/* now do a neighborhood search for optimum value */
optimumValue = trialValue;
- optimumDev = x; // this is certainly far away from optimum
+ optimumDev = x; /* this is certainly far away from optimum */
for (OSCCAL = trialValue - 1; OSCCAL <= trialValue + 1; OSCCAL++){
x = usbMeasureFrameLength() - targetValue;
if (x < 0)
void usbEventResetReady(void)
{
- cli(); // usbMeasureFrameLength() counts CPU cycles, so disable interrupts.
+ cli(); /* usbMeasureFrameLength() counts CPU cycles, so disable interrupts. */
calibrateOscillator();
sei();
-// we never read the value from eeprom so this causes only degradation of eeprom
-// eeprom_write_byte(0, OSCCAL); // store the calibrated value in EEPROM
}
/* ------------------------------------------------------------------------- */
int main(void)
{
- uchar i;
+ size_t idx = 0;
+ int8_t i = 0, last_stable_button_state = 0;
wdt_enable(WDTO_1S);
/* Even if you don't use the watchdog, turn it off here. On newer devices,
* additional hardware initialization.
*/
- memset(&keyboard_report, 0, sizeof(keyboard_report));
-
- init_temperature_sensor();
+ DDRB &= ~_BV(BUTTON_PIN); /* make button pin input */
+ PORTB |= _BV(BUTTON_PIN); /* turn on pull-up resistor */
+ counter_init();
usbInit();
usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
- i = 0;
while(--i){ /* fake USB disconnect for ~512 ms */
wdt_reset();
_delay_ms(2);
}
usbDeviceConnect();
- LED_PORT_DDR |= _BV(R_BIT) | _BV(G_BIT) | _BV(B_BIT); /* make the LED bit an output */
-
sei();
for(;;){ /* main event loop */
- // update_pwm();
-
wdt_reset();
usbPoll();
+ i = button_get_debounced(25);
+ if (i != -1) {
+ if (last_stable_button_state == 0 && i == 1) {
+ key_state = STATE_SEND_KEY;
+ }
+ last_stable_button_state = i;
+ }
+
if(usbInterruptIsReady() && key_state != STATE_WAIT){
switch(key_state) {
case STATE_SEND_KEY:
- buildReport('x');
- key_state = STATE_RELEASE_KEY; // release next
+ buildReport(token[idx]);
+ key_state = STATE_RELEASE_KEY; /* release next */
break;
case STATE_RELEASE_KEY:
buildReport(0);
+ ++idx;
+ if (token[idx] == '\0') {
+ idx = 0;
+ key_state = STATE_WAIT;
+ } else {
+ key_state = STATE_SEND_KEY;
+ }
+ break;
default:
- key_state = STATE_WAIT; // should not happen
+ key_state = STATE_WAIT; /* should not happen */
}
- // start sending
+ /* start sending */
usbSetInterrupt((void *)&keyboard_report, sizeof(keyboard_report));
}
projects / labortage2013badge.git / blobdiff