flipperzero-firmware/applications/ibutton/ibutton_mode_dallas_read.h
2020-11-17 07:39:48 +10:00

119 lines
4.1 KiB
C++

#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 = ibutton_gpio;
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();
}