[FL-2393][FL-2381] iButton, OneWire: move to plain C (#1068)

* 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

lib/one_wire/pulse_protocols/pulse_decoder.c

@@ -0,0 +1,66 @@
+#include <stdlib.h>
+#include "pulse_decoder.h"
+#include <string.h>
+#include <furi/check.h>
+
+#define MAX_PROTOCOL 5
+
+struct PulseDecoder {
+    PulseProtocol* protocols[MAX_PROTOCOL];
+};
+
+PulseDecoder* pulse_decoder_alloc() {
+    PulseDecoder* decoder = malloc(sizeof(PulseDecoder));
+    memset(decoder, 0, sizeof(PulseDecoder));
+    return decoder;
+}
+
+void pulse_decoder_free(PulseDecoder* reader) {
+    furi_assert(reader);
+    free(reader);
+}
+
+void pulse_decoder_add_protocol(PulseDecoder* reader, PulseProtocol* protocol, int32_t index) {
+    furi_check(index < MAX_PROTOCOL);
+    furi_check(reader->protocols[index] == NULL);
+    reader->protocols[index] = protocol;
+}
+
+void pulse_decoder_process_pulse(PulseDecoder* reader, bool polarity, uint32_t length) {
+    furi_assert(reader);
+    for(size_t index = 0; index < MAX_PROTOCOL; index++) {
+        if(reader->protocols[index] != NULL) {
+            pulse_protocol_process_pulse(reader->protocols[index], polarity, length);
+        }
+    }
+}
+
+int32_t pulse_decoder_get_decoded_index(PulseDecoder* reader) {
+    furi_assert(reader);
+    int32_t decoded = -1;
+    for(size_t index = 0; index < MAX_PROTOCOL; index++) {
+        if(reader->protocols[index] != NULL) {
+            if(pulse_protocol_decoded(reader->protocols[index])) {
+                decoded = index;
+                break;
+            }
+        }
+    }
+
+    return decoded;
+}
+
+void pulse_decoder_reset(PulseDecoder* reader) {
+    furi_assert(reader);
+    for(size_t index = 0; index < MAX_PROTOCOL; index++) {
+        if(reader->protocols[index] != NULL) {
+            pulse_protocol_reset(reader->protocols[index]);
+        }
+    }
+}
+
+void pulse_decoder_get_data(PulseDecoder* reader, int32_t index, uint8_t* data, size_t length) {
+    furi_assert(reader);
+    furi_check(reader->protocols[index] != NULL);
+    pulse_protocol_get_data(reader->protocols[index], data, length);
+}

lib/one_wire/pulse_protocols/pulse_decoder.h

@@ -0,0 +1,70 @@
+/**
+ * @file pulse_decoder.h
+ * 
+ * Generic pulse protocol decoder library
+ */
+
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include "pulse_protocol.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct PulseDecoder PulseDecoder;
+
+/**
+ * Allocate decoder
+ * @return PulseDecoder* 
+ */
+PulseDecoder* pulse_decoder_alloc();
+
+/**
+ * Deallocate decoder
+ * @param decoder 
+ */
+void pulse_decoder_free(PulseDecoder* decoder);
+
+/**
+ * Add protocol to decoder
+ * @param decoder 
+ * @param protocol protocol implementation
+ * @param index protocol index, should not be repeated
+ */
+void pulse_decoder_add_protocol(PulseDecoder* decoder, PulseProtocol* protocol, int32_t index);
+
+/**
+ * Push and process pulse with decoder
+ * @param decoder 
+ * @param polarity 
+ * @param length 
+ */
+void pulse_decoder_process_pulse(PulseDecoder* decoder, bool polarity, uint32_t length);
+
+/**
+ * Get indec of decoded protocol
+ * @param decoder 
+ * @return int32_t, -1 if nothing decoded, or index of decoded protocol 
+ */
+int32_t pulse_decoder_get_decoded_index(PulseDecoder* decoder);
+
+/**
+ * Reset all protocols in decoder
+ * @param decoder 
+ */
+void pulse_decoder_reset(PulseDecoder* decoder);
+
+/**
+ * Get decoded data from protocol
+ * @param decoder 
+ * @param index 
+ * @param data 
+ * @param length 
+ */
+void pulse_decoder_get_data(PulseDecoder* decoder, int32_t index, uint8_t* data, size_t length);
+
+#ifdef __cplusplus
+}
+#endif

lib/one_wire/pulse_protocols/pulse_glue.c

@@ -0,0 +1,55 @@
+#include "pulse_glue.h"
+
+struct PulseGlue {
+    int32_t hi_period;
+    int32_t low_period;
+    int32_t next_hi_period;
+};
+
+PulseGlue* pulse_glue_alloc() {
+    PulseGlue* pulse_glue = malloc(sizeof(PulseGlue));
+    pulse_glue_reset(pulse_glue);
+    return pulse_glue;
+}
+
+void pulse_glue_free(PulseGlue* pulse_glue) {
+    free(pulse_glue);
+}
+
+void pulse_glue_reset(PulseGlue* pulse_glue) {
+    pulse_glue->hi_period = 0;
+    pulse_glue->low_period = 0;
+    pulse_glue->next_hi_period = 0;
+}
+
+bool pulse_glue_push(PulseGlue* pulse_glue, bool polarity, uint32_t length) {
+    bool pop_ready = false;
+    if(polarity) {
+        if(pulse_glue->low_period == 0) {
+            // stage 1, accumulate hi period
+            pulse_glue->hi_period += length;
+        } else {
+            // stage 3, accumulate next hi period and be ready for pulse_glue_pop
+            pulse_glue->next_hi_period = length;
+
+            // data is ready
+            pop_ready = true;
+        }
+    } else {
+        if(pulse_glue->hi_period != 0) {
+            // stage 2, accumulate low period
+            pulse_glue->low_period += length;
+        }
+    }
+
+    return pop_ready;
+}
+
+void pulse_glue_pop(PulseGlue* pulse_glue, uint32_t* length, uint32_t* period) {
+    *length = pulse_glue->hi_period + pulse_glue->low_period;
+    *period = pulse_glue->hi_period;
+
+    pulse_glue->hi_period = pulse_glue->next_hi_period;
+    pulse_glue->low_period = 0;
+    pulse_glue->next_hi_period = 0;
+}

lib/one_wire/pulse_protocols/pulse_glue.h

@@ -0,0 +1,26 @@
+/**
+ * @file pulse_glue.h
+ * 
+ * Simple tool to glue separated pulses to corret 
+ */
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct PulseGlue PulseGlue;
+
+PulseGlue* pulse_glue_alloc();
+void pulse_glue_free(PulseGlue* pulse_glue);
+void pulse_glue_reset(PulseGlue* pulse_glue);
+
+bool pulse_glue_push(PulseGlue* pulse_glue, bool polarity, uint32_t length);
+void pulse_glue_pop(PulseGlue* pulse_glue, uint32_t* length, uint32_t* period);
+
+#ifdef __cplusplus
+}
+#endif

lib/one_wire/pulse_protocols/pulse_protocol.c

@@ -0,0 +1,67 @@
+#include "pulse_protocol.h"
+#include <stdlib.h>
+#include <string.h>
+
+struct PulseProtocol {
+    void* context;
+    PulseProtocolPulseCallback pulse_cb;
+    PulseProtocolResetCallback reset_cb;
+    PulseProtocolGetDataCallback get_data_cb;
+    PulseProtocolDecodedCallback decoded_cb;
+};
+
+PulseProtocol* pulse_protocol_alloc() {
+    PulseProtocol* protocol = malloc(sizeof(PulseProtocol));
+    memset(protocol, 0, sizeof(PulseProtocol));
+    return protocol;
+}
+
+void pulse_protocol_set_context(PulseProtocol* protocol, void* context) {
+    protocol->context = context;
+}
+
+void pulse_protocol_set_pulse_cb(PulseProtocol* protocol, PulseProtocolPulseCallback callback) {
+    protocol->pulse_cb = callback;
+}
+
+void pulse_protocol_set_reset_cb(PulseProtocol* protocol, PulseProtocolResetCallback callback) {
+    protocol->reset_cb = callback;
+}
+
+void pulse_protocol_set_get_data_cb(PulseProtocol* protocol, PulseProtocolGetDataCallback callback) {
+    protocol->get_data_cb = callback;
+}
+
+void pulse_protocol_set_decoded_cb(PulseProtocol* protocol, PulseProtocolDecodedCallback callback) {
+    protocol->decoded_cb = callback;
+}
+
+void pulse_protocol_free(PulseProtocol* protocol) {
+    free(protocol);
+}
+
+void pulse_protocol_process_pulse(PulseProtocol* protocol, bool polarity, uint32_t length) {
+    if(protocol->pulse_cb != NULL) {
+        protocol->pulse_cb(protocol->context, polarity, length);
+    }
+}
+
+void pulse_protocol_reset(PulseProtocol* protocol) {
+    if(protocol->reset_cb != NULL) {
+        protocol->reset_cb(protocol->context);
+    }
+}
+
+bool pulse_protocol_decoded(PulseProtocol* protocol) {
+    bool result = false;
+    if(protocol->decoded_cb != NULL) {
+        result = protocol->decoded_cb(protocol->context);
+    }
+    return result;
+}
+
+void pulse_protocol_get_data(PulseProtocol* protocol, uint8_t* data, size_t length) {
+    if(protocol->get_data_cb != NULL) {
+        protocol->get_data_cb(protocol->context, data, length);
+    }
+}

lib/one_wire/pulse_protocols/pulse_protocol.h

@@ -0,0 +1,122 @@
+/**
+ * @file pulse_protocol.h
+ * 
+ * Generic pulse protocol decoder library, protocol interface
+ */
+
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Anonymous PulseProtocol struct
+ */
+typedef struct PulseProtocol PulseProtocol;
+
+/**
+ * Process pulse callback
+ */
+typedef void (*PulseProtocolPulseCallback)(void* context, bool polarity, uint32_t length);
+
+/**
+ * Reset protocol callback
+ */
+typedef void (*PulseProtocolResetCallback)(void* context);
+
+/**
+ * Get decoded data callback
+ */
+typedef void (*PulseProtocolGetDataCallback)(void* context, uint8_t* data, size_t length);
+
+/**
+ * Is protocol decoded callback
+ */
+typedef bool (*PulseProtocolDecodedCallback)(void* context);
+
+/**
+ * Allocate protocol
+ * @return PulseProtocol* 
+ */
+PulseProtocol* pulse_protocol_alloc();
+
+/**
+ * Deallocate protocol
+ * @param protocol 
+ */
+void pulse_protocol_free(PulseProtocol* protocol);
+
+/**
+ * Set context for callbacks
+ * @param protocol 
+ * @param context 
+ */
+void pulse_protocol_set_context(PulseProtocol* protocol, void* context);
+
+/**
+ * Set "Process pulse" callback. Called from the decoder when a new pulse is received.
+ * @param protocol 
+ * @param callback 
+ */
+void pulse_protocol_set_pulse_cb(PulseProtocol* protocol, PulseProtocolPulseCallback callback);
+
+/**
+ * Set "Reset protocol" callback. Called from the decoder when the decoder is reset.
+ * @param protocol 
+ * @param callback 
+ */
+void pulse_protocol_set_reset_cb(PulseProtocol* protocol, PulseProtocolResetCallback callback);
+
+/**
+ * Set "Get decoded data" callback. Called from the decoder when the decoder wants to get decoded data.
+ * @param protocol 
+ * @param callback 
+ */
+void pulse_protocol_set_get_data_cb(PulseProtocol* protocol, PulseProtocolGetDataCallback callback);
+
+/**
+ * Set "Is protocol decoded" callback. Called from the decoder when the decoder wants to know if a protocol has been decoded.
+ * @param protocol 
+ * @param callback 
+ */
+void pulse_protocol_set_decoded_cb(PulseProtocol* protocol, PulseProtocolDecodedCallback callback);
+
+/**
+ * Part of decoder interface.
+ * @param protocol 
+ * @param polarity 
+ * @param length 
+ */
+void pulse_protocol_process_pulse(PulseProtocol* protocol, bool polarity, uint32_t length);
+
+/**
+ * Part of decoder interface.
+ * @param protocol 
+ * @return true 
+ * @return false 
+ */
+bool pulse_protocol_decoded(PulseProtocol* protocol);
+
+/**
+ * Part of decoder interface.
+ * @param protocol 
+ * @return true 
+ * @return false 
+ */
+void pulse_protocol_get_data(PulseProtocol* protocol, uint8_t* data, size_t length);
+
+/**
+ * Part of decoder interface.
+ * @param protocol 
+ * @return true 
+ * @return false 
+ */
+void pulse_protocol_reset(PulseProtocol* protocol);
+
+#ifdef __cplusplus
+}
+#endif