ibutton init

This commit is contained in:
DrZlo13 2020-11-16 21:21:58 +10:00
parent 714d732745
commit 4eeac6579f
9 changed files with 721 additions and 0 deletions

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@ -35,6 +35,7 @@ void power_task(void* p);
void sd_card_test(void* p); void sd_card_test(void* p);
void application_vibro(void* p); void application_vibro(void* p);
void app_gpio_test(void* p); void app_gpio_test(void* p);
void app_ibutton(void* p);
const FlipperStartupApp FLIPPER_STARTUP[] = { const FlipperStartupApp FLIPPER_STARTUP[] = {
#ifdef APP_DISPLAY #ifdef APP_DISPLAY
@ -122,6 +123,10 @@ const FlipperStartupApp FLIPPER_STARTUP[] = {
.name = "gpio test", .name = "gpio test",
.libs = {1, FURI_LIB{"gui_task"}}, .libs = {1, FURI_LIB{"gui_task"}},
#endif #endif
#ifdef APP_IBUTTON
{.app = app_ibutton, .name = "ibutton", .libs = {1, FURI_LIB{"gui_task"}}},
#endif
}; };
const FlipperStartupApp FLIPPER_APPS[] = { const FlipperStartupApp FLIPPER_APPS[] = {
@ -164,4 +169,8 @@ const FlipperStartupApp FLIPPER_APPS[] = {
#ifdef BUILD_GPIO_DEMO #ifdef BUILD_GPIO_DEMO
{.app = app_gpio_test, .name = "gpio test", .libs = {1, FURI_LIB{"gui_task"}}}, {.app = app_gpio_test, .name = "gpio test", .libs = {1, FURI_LIB{"gui_task"}}},
#endif #endif
#ifdef BUILD_IBUTTON
{.app = app_ibutton, .name = "ibutton", .libs = {1, FURI_LIB{"gui_task"}}},
#endif
}; };

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@ -0,0 +1,101 @@
#include "ibutton.h"
#include "ibutton_mode_dallas_read.h"
#include "ibutton_mode_dallas_emulate.h"
// start app
void AppiButton::run() {
mode[0] = new AppiButtonModeDallasRead(this);
mode[1] = new AppiButtonModeDallasEmulate(this);
// create pin
GpioPin red_led = led_gpio[0];
GpioPin green_led = led_gpio[1];
// TODO open record
red_led_record = &red_led;
green_led_record = &green_led;
// configure pin
gpio_init(red_led_record, GpioModeOutputOpenDrain);
gpio_init(green_led_record, GpioModeOutputOpenDrain);
AppiButtonEvent event;
while(1) {
osStatus_t event_status = osMessageQueueGet(event_queue, &event, NULL, 100);
if(event_status == osOK) {
if(event.type == AppiButtonEvent::EventTypeKey) {
// press events
if(event.value.input.state && event.value.input.input == InputBack) {
printf("[ibutton] bye!\n");
// TODO remove all widgets create by app
widget_enabled_set(widget, false);
furiac_exit(NULL);
}
if(event.value.input.state && event.value.input.input == InputLeft) {
decrease_mode();
}
if(event.value.input.state && event.value.input.input == InputRight) {
increase_mode();
}
}
} else {
event.type = AppiButtonEvent::EventTypeTick;
}
acquire_state();
mode[state.mode_index]->event(&event, &state);
release_state();
widget_update(widget);
};
}
// render app
void AppiButton::render(CanvasApi* canvas) {
canvas->set_color(canvas, ColorBlack);
canvas->set_font(canvas, FontPrimary);
canvas->draw_str(canvas, 2, 12, "iButton");
mode[state.mode_index]->render(canvas, &state);
}
void AppiButton::blink_red() {
gpio_write(red_led_record, 0);
delay(10);
gpio_write(red_led_record, 1);
}
void AppiButton::blink_green() {
gpio_write(green_led_record, 0);
delay(10);
gpio_write(green_led_record, 1);
}
void AppiButton::increase_mode() {
acquire_state();
if(state.mode_index < (modes_count - 1)) {
mode[state.mode_index]->release();
state.mode_index++;
mode[state.mode_index]->acquire();
}
release_state();
}
void AppiButton::decrease_mode() {
acquire_state();
if(state.mode_index > 0) {
mode[state.mode_index]->release();
state.mode_index--;
mode[state.mode_index]->acquire();
}
release_state();
}
// app enter function
extern "C" void app_ibutton(void* p) {
AppiButton* app = new AppiButton();
app->run();
}

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@ -0,0 +1,54 @@
#pragma once
#include "app-template.h"
#include "ibutton_mode_template.h"
// event enumeration type
typedef uint8_t event_t;
class AppiButtonState {
public:
// state data
uint8_t dallas_address[8] = {0x01, 0xFD, 0x0E, 0x84, 0x01, 0x00, 0x00, 0xDB};
uint8_t mode_index;
// state initializer
AppiButtonState() {
mode_index = 0;
}
};
// events class
class AppiButtonEvent {
public:
// events enum
static const event_t EventTypeTick = 0;
static const event_t EventTypeKey = 1;
// payload
union {
InputEvent input;
} value;
// event type
event_t type;
};
// our app derived from base AppTemplate class
// with template variables <state, events>
class AppiButton : public AppTemplate<AppiButtonState, AppiButtonEvent> {
public:
GpioPin* red_led_record;
GpioPin* green_led_record;
static const uint8_t modes_count = 2;
AppTemplateMode<AppiButtonState, AppiButtonEvent>* mode[modes_count];
void run();
void render(CanvasApi* canvas);
void blink_red();
void blink_green();
void increase_mode();
void decrease_mode();
};

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@ -0,0 +1,64 @@
#pragma once
#include "ibutton.h"
#include "one_wire_slave_gpio.h"
class AppiButtonModeDallasEmulate : public AppTemplateMode<AppiButtonState, AppiButtonEvent> {
public:
const char* name = "dallas emulate";
AppiButton* app;
OneWireGpioSlave* onewire_slave;
void event(AppiButtonEvent* event, AppiButtonState* state);
void render(CanvasApi* canvas, AppiButtonState* state);
void acquire();
void release();
AppiButtonModeDallasEmulate(AppiButton* parent_app) {
app = parent_app;
// TODO open record
GpioPin one_wire_pin = {iBTN_GPIO_Port, iBTN_Pin};
GpioPin* one_wire_pin_record = &one_wire_pin;
onewire_slave = new OneWireGpioSlave(one_wire_pin_record);
};
};
void AppiButtonModeDallasEmulate::event(AppiButtonEvent* event, AppiButtonState* state) {
if(event->type == AppiButtonEvent::EventTypeTick) {
acquire();
if(onewire_slave->emulate(state->dallas_address, 8)) {
app->blink_green();
} else {
}
}
}
void AppiButtonModeDallasEmulate::render(CanvasApi* canvas, AppiButtonState* state) {
canvas->set_font(canvas, FontSecondary);
canvas->draw_str(canvas, 2, 25, "< dallas emulate");
canvas->draw_str(canvas, 2, 37, "give me domophone");
{
char buf[24];
sprintf(
buf,
"%x:%x:%x:%x:%x:%x:%x:%x",
state->dallas_address[0],
state->dallas_address[1],
state->dallas_address[2],
state->dallas_address[3],
state->dallas_address[4],
state->dallas_address[5],
state->dallas_address[6],
state->dallas_address[7]);
canvas->draw_str(canvas, 2, 50, buf);
}
}
void AppiButtonModeDallasEmulate::acquire() {
onewire_slave->start();
}
void AppiButtonModeDallasEmulate::release() {
onewire_slave->stop();
}

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@ -0,0 +1,119 @@
#pragma once
#include "ibutton.h"
#include "one_wire_gpio.h"
class AppiButtonModeDallasRead : public AppTemplateMode<AppiButtonState, AppiButtonEvent> {
public:
const char* name = "dallas read";
AppiButton* app;
OneWireGpio* onewire;
void event(AppiButtonEvent* event, AppiButtonState* state);
void render(CanvasApi* canvas, AppiButtonState* state);
void acquire();
void release();
AppiButtonModeDallasRead(AppiButton* parent_app) {
app = parent_app;
// TODO open record
GpioPin one_wire_pin = {iBTN_GPIO_Port, iBTN_Pin};
GpioPin* one_wire_pin_record = &one_wire_pin;
onewire = new OneWireGpio(one_wire_pin_record);
};
uint8_t crc_8(uint8_t* buffer, uint8_t count);
};
void AppiButtonModeDallasRead::event(AppiButtonEvent* event, AppiButtonState* state) {
if(event->type == AppiButtonEvent::EventTypeTick) {
bool result = 0;
uint8_t address[8];
osKernelLock();
result = onewire->reset();
osKernelUnlock();
if(result) {
printf("device on line\n");
delay(50);
osKernelLock();
onewire->write(0x33);
onewire->read_bytes(address, 8);
osKernelUnlock();
printf("address: %x", address[0]);
for(uint8_t i = 1; i < 8; i++) {
printf(":%x", address[i]);
}
printf("\n");
printf("crc8: %x\n", crc_8(address, 7));
if(crc_8(address, 8) == 0) {
printf("CRC valid\n");
memcpy(app->state.dallas_address, address, 8);
app->blink_green();
} else {
printf("CRC invalid\n");
}
} else {
}
}
}
void AppiButtonModeDallasRead::render(CanvasApi* canvas, AppiButtonState* state) {
canvas->set_font(canvas, FontSecondary);
canvas->draw_str(canvas, 2, 25, "dallas read >");
canvas->draw_str(canvas, 2, 37, "touch me, iButton");
{
char buf[24];
sprintf(
buf,
"%x:%x:%x:%x:%x:%x:%x:%x",
state->dallas_address[0],
state->dallas_address[1],
state->dallas_address[2],
state->dallas_address[3],
state->dallas_address[4],
state->dallas_address[5],
state->dallas_address[6],
state->dallas_address[7]);
canvas->draw_str(canvas, 2, 50, buf);
}
}
uint8_t AppiButtonModeDallasRead::crc_8(uint8_t* buffer, uint8_t count) {
const uint8_t maxim_crc8_table[256] = {
0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65, 157, 195,
33, 127, 252, 162, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220, 35, 125, 159, 193,
66, 28, 254, 160, 225, 191, 93, 3, 128, 222, 60, 98, 190, 224, 2, 92, 223, 129,
99, 61, 124, 34, 192, 158, 29, 67, 161, 255, 70, 24, 250, 164, 39, 121, 155, 197,
132, 218, 56, 102, 229, 187, 89, 7, 219, 133, 103, 57, 186, 228, 6, 88, 25, 71,
165, 251, 120, 38, 196, 154, 101, 59, 217, 135, 4, 90, 184, 230, 167, 249, 27, 69,
198, 152, 122, 36, 248, 166, 68, 26, 153, 199, 37, 123, 58, 100, 134, 216, 91, 5,
231, 185, 140, 210, 48, 110, 237, 179, 81, 15, 78, 16, 242, 172, 47, 113, 147, 205,
17, 79, 173, 243, 112, 46, 204, 146, 211, 141, 111, 49, 178, 236, 14, 80, 175, 241,
19, 77, 206, 144, 114, 44, 109, 51, 209, 143, 12, 82, 176, 238, 50, 108, 142, 208,
83, 13, 239, 177, 240, 174, 76, 18, 145, 207, 45, 115, 202, 148, 118, 40, 171, 245,
23, 73, 8, 86, 180, 234, 105, 55, 213, 139, 87, 9, 235, 181, 54, 104, 138, 212,
149, 203, 41, 119, 244, 170, 72, 22, 233, 183, 85, 11, 136, 214, 52, 106, 43, 117,
151, 201, 74, 20, 246, 168, 116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84,
215, 137, 107, 53};
uint8_t crc = 0;
while(count--) {
crc = maxim_crc8_table[(crc ^ *buffer++)];
}
return crc;
}
void AppiButtonModeDallasRead::acquire() {
onewire->start();
}
void AppiButtonModeDallasRead::release() {
onewire->stop();
}

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@ -0,0 +1,11 @@
#pragma once
// template for modes
template <class TState, class TEvents> class AppTemplateMode {
public:
const char* name;
virtual void event(TEvents* event, TState* state) = 0;
virtual void render(CanvasApi* canvas, TState* state) = 0;
virtual void acquire() = 0;
virtual void release() = 0;
};

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@ -0,0 +1,130 @@
#pragma once
#include "flipper.h"
#include "flipper_v2.h"
#include "one_wire_timings.h"
class OneWireGpio {
private:
GpioPin* gpio;
public:
OneWireGpio(GpioPin* one_wire_gpio);
~OneWireGpio();
bool reset(void);
bool read_bit(void);
uint8_t read(void);
void read_bytes(uint8_t* buf, uint16_t count);
void write_bit(bool value);
void write(uint8_t value);
void start(void);
void stop(void);
};
OneWireGpio::OneWireGpio(GpioPin* one_wire_gpio) {
gpio = one_wire_gpio;
}
OneWireGpio::~OneWireGpio() {
stop();
}
void OneWireGpio::start(void) {
gpio_init(gpio, GpioModeOutputOpenDrain);
}
void OneWireGpio::stop(void) {
gpio_init(gpio, GpioModeAnalog);
}
bool OneWireGpio::reset(void) {
uint8_t r;
uint8_t retries = 125;
// wait until the gpio is high
gpio_write(gpio, true);
do {
if(--retries == 0) return 0;
delay_us(2);
} while(!gpio_read(gpio));
// pre delay
delay_us(OneWireTiming::RESET_DELAY_PRE);
// drive low
gpio_write(gpio, false);
delay_us(OneWireTiming::RESET_DRIVE);
// release
gpio_write(gpio, true);
delay_us(OneWireTiming::RESET_RELEASE);
// read and post delay
r = !gpio_read(gpio);
delay_us(OneWireTiming::RESET_DELAY_POST);
return r;
}
bool OneWireGpio::read_bit(void) {
bool result;
// drive low
gpio_write(gpio, false);
delay_us(OneWireTiming::READ_DRIVE);
// release
gpio_write(gpio, true);
delay_us(OneWireTiming::READ_RELEASE);
// read and post delay
result = gpio_read(gpio);
delay_us(OneWireTiming::READ_DELAY_POST);
return result;
}
void OneWireGpio::write_bit(bool value) {
if(value) {
// drive low
gpio_write(gpio, false);
delay_us(OneWireTiming::WRITE_1_DRIVE);
// release
gpio_write(gpio, true);
delay_us(OneWireTiming::WRITE_1_RELEASE);
} else {
// drive low
gpio_write(gpio, false);
delay_us(OneWireTiming::WRITE_0_DRIVE);
// release
gpio_write(gpio, true);
delay_us(OneWireTiming::WRITE_0_RELEASE);
}
}
uint8_t OneWireGpio::read(void) {
uint8_t result = 0;
for(uint8_t bitMask = 0x01; bitMask; bitMask <<= 1) {
if(read_bit()) {
result |= bitMask;
}
}
return result;
}
void OneWireGpio::read_bytes(uint8_t* buffer, uint16_t count) {
for(uint16_t i = 0; i < count; i++) {
buffer[i] = read();
}
}
void OneWireGpio::write(uint8_t value) {
uint8_t bitMask;
for(bitMask = 0x01; bitMask; bitMask <<= 1) {
write_bit((bitMask & value) ? 1 : 0);
}
}

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@ -0,0 +1,179 @@
#pragma once
#include "flipper.h"
#include "flipper_v2.h"
#include "one_wire_timings.h"
class OneWireGpioSlave {
private:
GpioPin* gpio;
public:
OneWireGpioSlave(GpioPin* one_wire_gpio);
~OneWireGpioSlave();
void start(void);
void stop(void);
bool emulate(uint8_t* buffer, uint8_t length);
bool check_reset(void);
bool show_presence(void);
bool receive_and_process_cmd(void);
bool receive(uint8_t* data, const uint8_t data_length);
bool receiveBit(void);
bool overdrive_mode = false;
OneWiteTimeType wait_while_gpio(volatile OneWiteTimeType retries, const bool pin_value);
};
OneWireGpioSlave::OneWireGpioSlave(GpioPin* one_wire_gpio) {
gpio = one_wire_gpio;
}
OneWireGpioSlave::~OneWireGpioSlave() {
stop();
}
void OneWireGpioSlave::start(void) {
gpio_init(gpio, GpioModeOutputOpenDrain);
}
void OneWireGpioSlave::stop(void) {
gpio_init(gpio, GpioModeAnalog);
}
bool OneWireGpioSlave::emulate(uint8_t* buffer, uint8_t length) {
if(!check_reset()) {
printf("reset error\n");
return false;
}
if(!show_presence()) {
printf("presence error\n");
return false;
}
if(!receive_and_process_cmd()) {
printf("receive_and_process_cmd error\n");
return false;
}
printf("ok\n");
return true;
}
OneWiteTimeType OneWireGpioSlave::wait_while_gpio(OneWiteTimeType time, const bool pin_value) {
uint32_t start = DWT->CYCCNT;
uint32_t time_ticks = time * (SystemCoreClock / 1000000.0f);
while(((DWT->CYCCNT - start) < time_ticks)) {
if(gpio_read(gpio) != pin_value) {
uint32_t time = (DWT->CYCCNT - start);
time /= (SystemCoreClock / 1000000.0f);
return time;
}
}
return 0;
}
bool OneWireGpioSlave::check_reset(void) {
while(gpio_read(gpio) == true) {
}
/*if(wait_while_gpio(OneWireEmulateTiming::RESET_TIMEOUT * 20, true) == 0) {
printf("RESET_TIMEOUT\n");
return false;
}*/
const OneWiteTimeType time_remaining =
wait_while_gpio(OneWireEmulateTiming::RESET_MAX[0], false);
if(time_remaining == 0) {
return false;
}
if(overdrive_mode && ((OneWireEmulateTiming::RESET_MAX[0] -
OneWireEmulateTiming::RESET_MIN[0]) <= time_remaining)) {
// normal reset detected
overdrive_mode = false;
};
bool result = (time_remaining <= OneWireEmulateTiming::RESET_MAX[0]) &&
time_remaining >= OneWireEmulateTiming::RESET_MIN[overdrive_mode];
return result;
}
bool OneWireGpioSlave::show_presence(void) {
wait_while_gpio(OneWireEmulateTiming::PRESENCE_TIMEOUT, true);
gpio_write(gpio, false);
delay_us(OneWireEmulateTiming::PRESENCE_MIN[overdrive_mode]);
gpio_write(gpio, true);
/*OneWiteTimeType wait_time = OneWireEmulateTiming::PRESENCE_MAX[overdrive_mode] -
OneWireEmulateTiming::PRESENCE_MIN[overdrive_mode];
if(wait_while_gpio(wait_time, false) == 0) {
return false;
}*/
return true;
}
bool OneWireGpioSlave::receive_and_process_cmd(void) {
uint8_t cmd;
receive(&cmd, 1);
printf("cmd %x\n", cmd);
return false;
}
bool OneWireGpioSlave::receiveBit(void) {
// wait while bus is HIGH
OneWiteTimeType time = OneWireEmulateTiming::SLOT_MAX[overdrive_mode];
time = wait_while_gpio(time, true);
if (time == 0)
{
printf("RESET_IN_PROGRESS\n");
return false;
}
/*while ((DIRECT_READ(pin_baseReg, pin_bitMask) == 0) && (--retries != 0));
if (retries == 0)
{
_error = Error::RESET_IN_PROGRESS;
return false;
}*/
// wait while bus is LOW
time = OneWireEmulateTiming::MSG_HIGH_TIMEOUT;
time = wait_while_gpio(time, false);
if (time == 0)
{
printf("TIMEOUT_HIGH\n");
return false;
}
/*while ((DIRECT_READ(pin_baseReg, pin_bitMask) != 0) && (--retries != 0));
if (retries == 0)
{
_error = Error::AWAIT_TIMESLOT_TIMEOUT_HIGH;
return false;
}*/
// wait a specific time to do a read (data is valid by then), // first difference to inner-loop of write()
time = OneWireEmulateTiming::READ_MIN[overdrive_mode];
time = wait_while_gpio(time, true);
//while ((DIRECT_READ(pin_baseReg, pin_bitMask) == 0) && (--retries != 0));
return (time > 0);
}
bool OneWireGpioSlave::receive(uint8_t* data, const uint8_t data_length) {
uint8_t bytes_received = 0;
for(; bytes_received < data_length; ++bytes_received) {
uint8_t value = 0;
for(uint8_t bitMask = 0x01; bitMask != 0; bitMask <<= 1) {
if(receiveBit()) value |= bitMask;
}
data[bytes_received] = value;
}
return (bytes_received != data_length);
}

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@ -0,0 +1,54 @@
#pragma once
#include <stdint.h>
class __OneWireTiming {
public:
constexpr static const uint16_t TIMING_A = 6;
constexpr static const uint16_t TIMING_B = 64;
constexpr static const uint16_t TIMING_C = 60;
constexpr static const uint16_t TIMING_D = 10;
constexpr static const uint16_t TIMING_E = 9;
constexpr static const uint16_t TIMING_F = 55;
constexpr static const uint16_t TIMING_G = 0;
constexpr static const uint16_t TIMING_H = 480;
constexpr static const uint16_t TIMING_I = 70;
constexpr static const uint16_t TIMING_J = 410;
};
class OneWireTiming {
public:
constexpr static const uint16_t WRITE_1_DRIVE = __OneWireTiming::TIMING_A;
constexpr static const uint16_t WRITE_1_RELEASE = __OneWireTiming::TIMING_B;
constexpr static const uint16_t WRITE_0_DRIVE = __OneWireTiming::TIMING_C;
constexpr static const uint16_t WRITE_0_RELEASE = __OneWireTiming::TIMING_D;
constexpr static const uint16_t READ_DRIVE = __OneWireTiming::TIMING_A;
constexpr static const uint16_t READ_RELEASE = __OneWireTiming::TIMING_E;
constexpr static const uint16_t READ_DELAY_POST = __OneWireTiming::TIMING_F;
constexpr static const uint16_t RESET_DELAY_PRE = __OneWireTiming::TIMING_G;
constexpr static const uint16_t RESET_DRIVE = __OneWireTiming::TIMING_H;
constexpr static const uint16_t RESET_RELEASE = __OneWireTiming::TIMING_I;
constexpr static const uint16_t RESET_DELAY_POST = __OneWireTiming::TIMING_J;
};
typedef uint32_t OneWiteTimeType;
class OneWireEmulateTiming {
public:
constexpr static const OneWiteTimeType RESET_TIMEOUT = {5000};
constexpr static const OneWiteTimeType RESET_MIN[2] = {430, 48};
constexpr static const OneWiteTimeType RESET_MAX[2] = {960, 80};
constexpr static const OneWiteTimeType PRESENCE_TIMEOUT = {20};
constexpr static const OneWiteTimeType PRESENCE_MIN[2] = {160, 8};
constexpr static const OneWiteTimeType PRESENCE_MAX[2] = {480, 32};
constexpr static const OneWiteTimeType MSG_HIGH_TIMEOUT = {15000};
constexpr static const OneWiteTimeType SLOT_MAX[2] = {135, 30};
constexpr static const OneWiteTimeType READ_MIN[2] = {20, 4};
constexpr static const OneWiteTimeType READ_MAX[2] = {60, 10};
constexpr static const OneWiteTimeType WRITE_ZERO[2] = {30, 8};
};