flipperzero-firmware/lib/one_wire/ibutton/protocols/dallas/protocol_ds1996.c
Guido Giorgi 25fd3c3400
iButton: Add support for Dallas DS1971 v2 (#2492)
* iButton: Add DS1971 Support refactored for v2
* Fix requested by gsurkov
* Fix DALLAS_COMMON_CMD_* use, cusotm data field to Eeprom and COPY_SCRAPTCHPAD
* Fix Emulation + Memory Info + Docs
* Fix docs, strings, refactor code

Co-authored-by: Georgii Surkov <georgii.surkov@outlook.com>
Co-authored-by: あく <alleteam@gmail.com>
2023-03-16 23:12:43 +09:00

214 lines
7.4 KiB
C

#include "protocol_ds1996.h"
#include <core/core_defines.h>
#include <toolbox/pretty_format.h>
#include "dallas_common.h"
#define DS1996_FAMILY_CODE 0x0CU
#define DS1996_FAMILY_NAME "DS1996"
#define DS1996_SRAM_DATA_SIZE 8192U
#define DS1996_SRAM_PAGE_SIZE 32U
#define DS1996_COPY_SCRATCH_TIMEOUT_US 100U
#define DS1996_DATA_BYTE_COUNT 4U
#define DS1996_SRAM_DATA_KEY "Sram Data"
#define DS1996_MEMORY_TYPE "SRAM"
typedef struct {
OneWireSlave* bus;
DallasCommonCommandState command_state;
} DS1996ProtocolState;
typedef struct {
DallasCommonRomData rom_data;
uint8_t sram_data[DS1996_SRAM_DATA_SIZE];
DS1996ProtocolState state;
} DS1996ProtocolData;
static bool dallas_ds1996_read(OneWireHost*, void*);
static bool dallas_ds1996_write_copy(OneWireHost*, iButtonProtocolData*);
static void dallas_ds1996_emulate(OneWireSlave*, iButtonProtocolData*);
static bool dallas_ds1996_load(FlipperFormat*, uint32_t, iButtonProtocolData*);
static bool dallas_ds1996_save(FlipperFormat*, const iButtonProtocolData*);
static void dallas_ds1996_render_data(FuriString*, const iButtonProtocolData*);
static void dallas_ds1996_render_brief_data(FuriString*, const iButtonProtocolData*);
static void dallas_ds1996_render_error(FuriString*, const iButtonProtocolData*);
static bool dallas_ds1996_is_data_valid(const iButtonProtocolData*);
static void dallas_ds1996_get_editable_data(iButtonEditableData*, iButtonProtocolData*);
static void dallas_ds1996_apply_edits(iButtonProtocolData*);
const iButtonProtocolDallasBase ibutton_protocol_ds1996 = {
.family_code = DS1996_FAMILY_CODE,
.features = iButtonProtocolFeatureExtData | iButtonProtocolFeatureWriteCopy,
.data_size = sizeof(DS1996ProtocolData),
.manufacturer = DALLAS_COMMON_MANUFACTURER_NAME,
.name = DS1996_FAMILY_NAME,
.read = dallas_ds1996_read,
.write_blank = NULL, /* Data too big for known blanks */
.write_copy = dallas_ds1996_write_copy,
.emulate = dallas_ds1996_emulate,
.save = dallas_ds1996_save,
.load = dallas_ds1996_load,
.render_data = dallas_ds1996_render_data,
.render_brief_data = dallas_ds1996_render_brief_data,
.render_error = dallas_ds1996_render_error,
.is_valid = dallas_ds1996_is_data_valid,
.get_editable_data = dallas_ds1996_get_editable_data,
.apply_edits = dallas_ds1996_apply_edits,
};
bool dallas_ds1996_read(OneWireHost* host, iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
return onewire_host_reset(host) && dallas_common_read_rom(host, &data->rom_data) &&
dallas_common_read_mem(host, 0, data->sram_data, DS1996_SRAM_DATA_SIZE);
}
bool dallas_ds1996_write_copy(OneWireHost* host, iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
return dallas_common_write_mem(
host,
DS1996_COPY_SCRATCH_TIMEOUT_US,
DS1996_SRAM_PAGE_SIZE,
data->sram_data,
DS1996_SRAM_DATA_SIZE);
}
static void dallas_ds1996_reset_callback(void* context) {
furi_assert(context);
DS1996ProtocolData* data = context;
data->state.command_state = DallasCommonCommandStateIdle;
}
static bool dallas_ds1996_command_callback(uint8_t command, void* context) {
furi_assert(context);
DS1996ProtocolData* data = context;
OneWireSlave* bus = data->state.bus;
switch(command) {
case DALLAS_COMMON_CMD_SEARCH_ROM:
if(data->state.command_state == DallasCommonCommandStateIdle) {
data->state.command_state = DallasCommonCommandStateRomCmd;
return dallas_common_emulate_search_rom(bus, &data->rom_data);
} else if(data->state.command_state == DallasCommonCommandStateRomCmd) {
data->state.command_state = DallasCommonCommandStateMemCmd;
dallas_common_emulate_read_mem(bus, data->sram_data, DS1996_SRAM_DATA_SIZE);
return false;
} else {
return false;
}
case DALLAS_COMMON_CMD_READ_ROM:
if(data->state.command_state == DallasCommonCommandStateIdle) {
data->state.command_state = DallasCommonCommandStateRomCmd;
return dallas_common_emulate_read_rom(bus, &data->rom_data);
} else {
return false;
}
case DALLAS_COMMON_CMD_SKIP_ROM:
if(data->state.command_state == DallasCommonCommandStateIdle) {
data->state.command_state = DallasCommonCommandStateRomCmd;
return true;
} else {
return false;
}
case DALLAS_COMMON_CMD_OVERDRIVE_SKIP_ROM:
case DALLAS_COMMON_CMD_OVERDRIVE_MATCH_ROM:
/* TODO: Overdrive mode support */
default:
return false;
}
}
void dallas_ds1996_emulate(OneWireSlave* bus, iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
data->state.bus = bus;
onewire_slave_set_reset_callback(bus, dallas_ds1996_reset_callback, protocol_data);
onewire_slave_set_command_callback(bus, dallas_ds1996_command_callback, protocol_data);
}
bool dallas_ds1996_load(
FlipperFormat* ff,
uint32_t format_version,
iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
bool success = false;
do {
if(format_version < 2) break;
if(!dallas_common_load_rom_data(ff, format_version, &data->rom_data)) break;
if(!flipper_format_read_hex(
ff, DS1996_SRAM_DATA_KEY, data->sram_data, DS1996_SRAM_DATA_SIZE))
break;
success = true;
} while(false);
return success;
}
bool dallas_ds1996_save(FlipperFormat* ff, const iButtonProtocolData* protocol_data) {
const DS1996ProtocolData* data = protocol_data;
bool success = false;
do {
if(!dallas_common_save_rom_data(ff, &data->rom_data)) break;
if(!flipper_format_write_hex(
ff, DS1996_SRAM_DATA_KEY, data->sram_data, DS1996_SRAM_DATA_SIZE))
break;
success = true;
} while(false);
return success;
}
void dallas_ds1996_render_data(FuriString* result, const iButtonProtocolData* protocol_data) {
const DS1996ProtocolData* data = protocol_data;
pretty_format_bytes_hex_canonical(
result,
DS1996_DATA_BYTE_COUNT,
PRETTY_FORMAT_FONT_MONOSPACE,
data->sram_data,
DS1996_SRAM_DATA_SIZE);
}
void dallas_ds1996_render_brief_data(FuriString* result, const iButtonProtocolData* protocol_data) {
const DS1996ProtocolData* data = protocol_data;
dallas_common_render_brief_data(
result, &data->rom_data, data->sram_data, DS1996_SRAM_DATA_SIZE, DS1996_MEMORY_TYPE);
}
void dallas_ds1996_render_error(FuriString* result, const iButtonProtocolData* protocol_data) {
const DS1996ProtocolData* data = protocol_data;
if(!dallas_common_is_valid_crc(&data->rom_data)) {
dallas_common_render_crc_error(result, &data->rom_data);
}
}
bool dallas_ds1996_is_data_valid(const iButtonProtocolData* protocol_data) {
const DS1996ProtocolData* data = protocol_data;
return dallas_common_is_valid_crc(&data->rom_data);
}
void dallas_ds1996_get_editable_data(
iButtonEditableData* editable_data,
iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
editable_data->ptr = data->rom_data.bytes;
editable_data->size = sizeof(DallasCommonRomData);
}
void dallas_ds1996_apply_edits(iButtonProtocolData* protocol_data) {
DS1996ProtocolData* data = protocol_data;
dallas_common_apply_edits(&data->rom_data, DS1996_FAMILY_CODE);
}