flipperzero-firmware/applications/lf-rfid/helpers/rfid-reader.cpp
SG 46bc515c6a
Low frequency RFID app [Read stage] (#385)
* App Lfrfid: init
* HAL-resources: add external gpios
* HAL-pwm: fix frequency calculation
* App LFRFID: generic manchester decoder
* App LFRFID: em-marine decoder
* App iButton: fix dwt timing acquire
* App LFRFID: rfid reader
* App LFRFID: temporary read keys on read scene
* App LFRFID: remove atomic bool init.
* App LFRFID: add *.c to build
* App LFRFID: unstable HID decoder
* App LFRFID: HID-26 reading
* HAL OS: disable sleep
* App LFRFID: HID-26 reader: remove debug
* App LFRFID: static data decoder-analyzer
* App LFRFID: very raw Indala decoder
* App LFRFID: multiprotocol reader
* App LFRFID: more reliable HID decoder
* App LFRFID: syntax fix
* App LFRFID: simple read scene
* Gui: force redraw on screen stream connect
* HAL-OS: allow sleep
* App LFRFID: notify api, tune view, tune scene
* App LFRFID: simple rfid emulator
* App LFRFID: more scenes, more reliable EM decoder.
* App LFRFID: format fix
* App LFRFID: warning fix
* Api-hal-resources: add rfid pins, rename external pins
* App LFRFID: remove unused emulator
* App LFRFID: use new gpio hal api
* App accessor: use new ext gpio name
* App LFRFID: remove unused emulator
* App LFRFID: remove debug gpio
* Api-hal-resources: alternate functions init
* Api-hal-rfid: new api
* Api-hal-ibutton: new api
* Api-hal: new headers
* App LFRFID: use new api in reader subroutines
* App LFRFID: use new api in emulator subroutines
* App LFRFID: remove old app
* App LFRFID, App iButton: fix memleak
* Api-hal-rfid: comments
* App LFRFID: pulse joiner helper, it combines pulses of different polarity into one pulse suitable for a timer
* App LFRFID: pulse joiner, now can accept only ne pulse
* App LFRFID: pulse joiner, fixes
* App LFRFID: EM encoder and emulation
* App LFRFID: format fixes
* App LFRFID: emmarine encoder cleanup
* App LFRFID: HID Encoder blank
* App LFRFID: Indala Encoder blank
2021-05-04 16:21:16 +03:00

134 lines
3.4 KiB
C++

#include "rfid-reader.h"
#include <furi.h>
#include <api-hal.h>
#include <stm32wbxx_ll_cortex.h>
#include <tim.h>
extern COMP_HandleTypeDef hcomp1;
/**
* @brief private violation assistant for RfidReader
*/
struct RfidReaderAccessor {
static void decode(RfidReader& rfid_reader, bool polarity) {
rfid_reader.decode(polarity);
}
};
void RfidReader::decode(bool polarity) {
uint32_t current_dwt_value = DWT->CYCCNT;
switch(type) {
case Type::Normal:
decoder_em.process_front(polarity, current_dwt_value - last_dwt_value);
decoder_hid26.process_front(polarity, current_dwt_value - last_dwt_value);
//decoder_indala.process_front(polarity, current_dwt_value - last_dwt_value);
//decoder_analyzer.process_front(polarity, current_dwt_value - last_dwt_value);
last_dwt_value = current_dwt_value;
break;
case Type::Indala:
break;
}
}
static void comparator_trigger_callback(void* hcomp, void* comp_ctx) {
COMP_HandleTypeDef* _hcomp = static_cast<COMP_HandleTypeDef*>(hcomp);
RfidReader* _this = static_cast<RfidReader*>(comp_ctx);
if(hcomp == &hcomp1) {
RfidReaderAccessor::decode(
*_this, (HAL_COMP_GetOutputLevel(_hcomp) == COMP_OUTPUT_LEVEL_HIGH));
}
}
RfidReader::RfidReader() {
}
void RfidReader::start(Type _type) {
type = _type;
start_gpio();
switch(type) {
case Type::Normal:
start_timer();
break;
case Type::Indala:
start_timer_indala();
break;
}
start_comparator();
}
void RfidReader::stop() {
stop_gpio();
stop_timer();
stop_comparator();
}
bool RfidReader::read(LfrfidKeyType* type, uint8_t* data, uint8_t data_size) {
bool result = false;
if(decoder_em.read(data, data_size)) {
*type = LfrfidKeyType::KeyEmarine;
result = true;
}
if(decoder_hid26.read(data, data_size)) {
*type = LfrfidKeyType::KeyHID;
result = true;
}
//decoder_indala.read(NULL, 0);
//decoder_analyzer.read(NULL, 0);
return result;
}
void RfidReader::start_comparator(void) {
api_interrupt_add(comparator_trigger_callback, InterruptTypeComparatorTrigger, this);
last_dwt_value = DWT->CYCCNT;
hcomp1.Init.InputMinus = COMP_INPUT_MINUS_1_2VREFINT;
hcomp1.Init.InputPlus = COMP_INPUT_PLUS_IO1;
hcomp1.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
hcomp1.Init.Hysteresis = COMP_HYSTERESIS_LOW;
hcomp1.Init.BlankingSrce = COMP_BLANKINGSRC_NONE;
hcomp1.Init.Mode = COMP_POWERMODE_MEDIUMSPEED;
hcomp1.Init.WindowMode = COMP_WINDOWMODE_DISABLE;
hcomp1.Init.TriggerMode = COMP_TRIGGERMODE_IT_RISING_FALLING;
if(HAL_COMP_Init(&hcomp1) != HAL_OK) {
Error_Handler();
}
HAL_COMP_Start(&hcomp1);
}
void RfidReader::start_timer(void) {
api_hal_rfid_tim_read(125000, 0.5);
api_hal_rfid_tim_read_start();
}
void RfidReader::start_timer_indala(void) {
api_hal_rfid_tim_read(62500, 0.25);
api_hal_rfid_tim_read_start();
}
void RfidReader::start_gpio(void) {
api_hal_rfid_pins_read();
}
void RfidReader::stop_comparator(void) {
HAL_COMP_Stop(&hcomp1);
api_interrupt_remove(comparator_trigger_callback, InterruptTypeComparatorTrigger);
}
void RfidReader::stop_timer(void) {
api_hal_rfid_tim_read_stop();
api_hal_rfid_tim_reset();
}
void RfidReader::stop_gpio(void) {
api_hal_rfid_pins_reset();
}