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 23:21:16 +10:00
parent dd9bd224be
commit 46bc515c6a
66 changed files with 3278 additions and 514 deletions
--- a/applications/lf-rfid-old/em4100.c
+++ b/applications/lf-rfid-old/em4100.c
@@ -0,0 +1,71 @@
+#include <furi.h>
+#include <api-hal.h>
+
+void prepare_data(uint32_t ID, uint32_t VENDOR, uint8_t* data) {
+    uint8_t value[10];
+
+    // vendor rows (4 bit in a row)
+    value[0] = (VENDOR >> 4) & 0xF;
+    value[1] = VENDOR & 0xF;
+
+    const uint8_t ROW_SIZE = 4;
+    const uint8_t HEADER_SIZE = 9;
+
+    // ID rows (4 bit in a row)
+    for(int i = 0; i < 8; i++) {
+        value[i + 2] = (ID >> (28 - i * ROW_SIZE)) & 0xF;
+    }
+
+    for(uint8_t i = 0; i < HEADER_SIZE; i++) {
+        data[i] = 1; // header
+    }
+
+    for(uint8_t i = 0; i < 10; i++) { // data
+        for(uint8_t j = 0; j < ROW_SIZE; j++) {
+            data[HEADER_SIZE + i * (ROW_SIZE + 1) + j] = (value[i] >> ((ROW_SIZE - 1) - j)) & 1;
+        }
+
+        // row parity
+        data[HEADER_SIZE + i * (ROW_SIZE + 1) + ROW_SIZE] =
+            (data[HEADER_SIZE + i * (ROW_SIZE + 1) + 0] +
+             data[HEADER_SIZE + i * (ROW_SIZE + 1) + 1] +
+             data[HEADER_SIZE + i * (ROW_SIZE + 1) + 2] +
+             data[HEADER_SIZE + i * (ROW_SIZE + 1) + 3]) %
+            2;
+    }
+
+    for(uint8_t i = 0; i < ROW_SIZE; i++) { //checksum
+        uint8_t checksum = 0;
+        for(uint8_t j = 0; j < 10; j++) {
+            checksum += data[HEADER_SIZE + i + j * (ROW_SIZE + 1)];
+        }
+        data[i + 59] = checksum % 2;
+    }
+
+    data[63] = 0; // stop bit
+
+    /*
+    printf("em data: ");
+    for(uint8_t i = 0; i < 64; i++) {
+        printf("%d ", data[i]);
+    }
+    printf("\r\n");
+    */
+}
+
+void em4100_emulation(uint8_t* data, GpioPin* pin) {
+    taskENTER_CRITICAL();
+    hal_gpio_write(pin, true);
+
+    for(uint8_t i = 0; i < 8; i++) {
+        for(uint8_t j = 0; j < 64; j++) {
+            delay_us(260);
+            hal_gpio_write(pin, data[j]);
+            delay_us(260);
+            hal_gpio_write(pin, !data[j]);
+        }
+    }
+
+    hal_gpio_write(pin, false);
+    taskEXIT_CRITICAL();
+}