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[FL-84] iButton app, dallas emulate + cyfral read, cyfral emulate (#253)

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* maxim crc function
* one wire template device and ds1990 classes
* 3 fields for addr
* cyfral emulator lib
* add cyfral read mode, refract rendering and events
* add ADC1_IN14, add adc interrupt
* cyfral read mode
* rename and move api-hal includes folder
* build onewire libs only if we build app
* start in mode 0
This commit is contained in:
DrZlo13
2020-11-25 10:25:13 +03:00
committed by GitHub
parent 758e37e294
commit 1f761d7fbb
37 changed files with 1996 additions and 821 deletions
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48
lib/onewire/maxim_crc.cpp Normal file
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#include "maxim_crc.h"
uint8_t maxim_crc8(const uint8_t* data, const uint8_t data_size, const uint8_t crc_init) {
uint8_t crc = crc_init;
for(uint8_t index = 0; index < data_size; ++index) {
uint8_t input_byte = data[index];
for(uint8_t bit_position = 0; bit_position < 8; ++bit_position) {
const uint8_t mix = (crc ^ input_byte) & static_cast<uint8_t>(0x01);
crc >>= 1;
if(mix != 0) crc ^= 0x8C;
input_byte >>= 1;
}
}
return crc;
}
uint16_t maxim_crc16(const uint8_t* address, const uint8_t length, const uint16_t init) {
uint16_t crc = init;
static const uint8_t odd_parity[16] = {0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0};
for(uint8_t i = 0; i < length; ++i) {
uint16_t cdata = address[i];
cdata = (cdata ^ crc) & static_cast<uint16_t>(0xff);
crc >>= 8;
if((odd_parity[cdata & 0x0F] ^ odd_parity[cdata >> 4]) != 0) crc ^= 0xC001;
cdata <<= 6;
crc ^= cdata;
cdata <<= 1;
crc ^= cdata;
}
return crc;
}
uint16_t maxim_crc16(uint8_t value, uint16_t crc) {
static const uint8_t odd_parity[16] = {0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0};
value = (value ^ static_cast<uint8_t>(crc));
crc >>= 8;
if((odd_parity[value & 0x0F] ^ odd_parity[value >> 4]) != 0) crc ^= 0xC001;
uint16_t cdata = (static_cast<uint16_t>(value) << 6);
crc ^= cdata;
crc ^= (static_cast<uint16_t>(cdata) << 1);
return crc;
}