flipperzero-firmware/applications/lf-rfid/helpers/rfid-reader.cpp

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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 13:21:16 +00:00
#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();
}