mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-19 01:03:22 +00:00
bdba15b366
* iButton: getting started on the worker concept * Hal delay: added global instructions_per_us variable * iButton: one wire slave * iButton: ibutton key setter * iButton: one wire host, use ibutton_hal * iButton\RFID: common pulse decoder concept * iButton: cyfral decoder * iButton: worker thread concept * iButton: metakom decoder * iButton: write key through worker * iButton: worker mode holder * iButton: worker improvements * iButton: Cyfral encoder * iButton: Metakom encoder * lib: pulse protocol helpers * iButton: Metakom decoder * iButton: Cyfral decoder * iButton worker: separate modes * iButton: libs documentation * HAL: iButton gpio modes * iButton worker: rename modes file * iButton worker, hal: move to LL * iButton CLI: worker for reading and emulation commands * iButton HAL: correct init and emulation sequence * iButton cli: moved to plain C * iButton: move to worker, small step to plain C * Libs, one wire: move to plain C * Libs: added forgotten files to compilation * iButton writer: get rid of manual disable/enable irq
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
#include "encoder_cyfral.h"
|
|
#include <furi_hal.h>
|
|
|
|
#define CYFRAL_DATA_SIZE sizeof(uint16_t)
|
|
#define CYFRAL_PERIOD (125 * instructions_per_us)
|
|
#define CYFRAL_0_LOW (CYFRAL_PERIOD * 0.66f)
|
|
#define CYFRAL_0_HI (CYFRAL_PERIOD * 0.33f)
|
|
#define CYFRAL_1_LOW (CYFRAL_PERIOD * 0.33f)
|
|
#define CYFRAL_1_HI (CYFRAL_PERIOD * 0.66f)
|
|
|
|
#define CYFRAL_SET_DATA(level, len) \
|
|
*polarity = level; \
|
|
*length = len;
|
|
|
|
struct EncoderCyfral {
|
|
uint32_t data;
|
|
uint32_t index;
|
|
};
|
|
|
|
EncoderCyfral* encoder_cyfral_alloc() {
|
|
EncoderCyfral* cyfral = malloc(sizeof(EncoderCyfral));
|
|
encoder_cyfral_reset(cyfral);
|
|
return cyfral;
|
|
}
|
|
|
|
void encoder_cyfral_free(EncoderCyfral* cyfral) {
|
|
free(cyfral);
|
|
}
|
|
|
|
void encoder_cyfral_reset(EncoderCyfral* cyfral) {
|
|
cyfral->data = 0;
|
|
cyfral->index = 0;
|
|
}
|
|
|
|
uint32_t cyfral_encoder_encode(const uint16_t data) {
|
|
uint32_t value = 0;
|
|
for(int8_t i = 0; i <= 7; i++) {
|
|
switch((data >> (i * 2)) & 0b00000011) {
|
|
case 0b11:
|
|
value = value << 4;
|
|
value += 0b00000111;
|
|
break;
|
|
case 0b10:
|
|
value = value << 4;
|
|
value += 0b00001011;
|
|
break;
|
|
case 0b01:
|
|
value = value << 4;
|
|
value += 0b00001101;
|
|
break;
|
|
case 0b00:
|
|
value = value << 4;
|
|
value += 0b00001110;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
void encoder_cyfral_set_data(EncoderCyfral* cyfral, const uint8_t* data, size_t data_size) {
|
|
furi_assert(cyfral);
|
|
furi_check(data_size >= CYFRAL_DATA_SIZE);
|
|
uint16_t intermediate;
|
|
memcpy(&intermediate, data, CYFRAL_DATA_SIZE);
|
|
cyfral->data = cyfral_encoder_encode(intermediate);
|
|
}
|
|
|
|
void encoder_cyfral_get_pulse(EncoderCyfral* cyfral, bool* polarity, uint32_t* length) {
|
|
if(cyfral->index < 8) {
|
|
// start word (0b0001)
|
|
switch(cyfral->index) {
|
|
case 0:
|
|
CYFRAL_SET_DATA(false, CYFRAL_0_LOW);
|
|
break;
|
|
case 1:
|
|
CYFRAL_SET_DATA(true, CYFRAL_0_HI);
|
|
break;
|
|
case 2:
|
|
CYFRAL_SET_DATA(false, CYFRAL_0_LOW);
|
|
break;
|
|
case 3:
|
|
CYFRAL_SET_DATA(true, CYFRAL_0_HI);
|
|
break;
|
|
case 4:
|
|
CYFRAL_SET_DATA(false, CYFRAL_0_LOW);
|
|
break;
|
|
case 5:
|
|
CYFRAL_SET_DATA(true, CYFRAL_0_HI);
|
|
break;
|
|
case 6:
|
|
CYFRAL_SET_DATA(false, CYFRAL_1_LOW);
|
|
break;
|
|
case 7:
|
|
CYFRAL_SET_DATA(true, CYFRAL_1_HI);
|
|
break;
|
|
}
|
|
} else {
|
|
// data
|
|
uint8_t data_start_index = cyfral->index - 8;
|
|
bool clock_polarity = (data_start_index) % 2;
|
|
uint8_t bit_index = (data_start_index) / 2;
|
|
bool bit_value = ((cyfral->data >> bit_index) & 1);
|
|
|
|
if(!clock_polarity) {
|
|
if(bit_value) {
|
|
CYFRAL_SET_DATA(false, CYFRAL_1_LOW);
|
|
} else {
|
|
CYFRAL_SET_DATA(false, CYFRAL_0_LOW);
|
|
}
|
|
} else {
|
|
if(bit_value) {
|
|
CYFRAL_SET_DATA(true, CYFRAL_1_HI);
|
|
} else {
|
|
CYFRAL_SET_DATA(true, CYFRAL_0_HI);
|
|
}
|
|
}
|
|
}
|
|
|
|
cyfral->index++;
|
|
if(cyfral->index >= (9 * 4 * 2)) {
|
|
cyfral->index = 0;
|
|
}
|
|
}
|