mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-23 19:23:09 +00:00
0917494a80
* Separate ibutton to its own module, add one_wire to f18 * Move onewire cli to a separate app Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
#include "rw1990.h"
|
|
|
|
#include <core/kernel.h>
|
|
|
|
#define RW1990_1_CMD_WRITE_RECORD_FLAG 0xD1
|
|
#define RW1990_1_CMD_READ_RECORD_FLAG 0xB5
|
|
#define RW1990_1_CMD_WRITE_ROM 0xD5
|
|
|
|
#define RW1990_2_CMD_WRITE_RECORD_FLAG 0x1D
|
|
#define RW1990_2_CMD_READ_RECORD_FLAG 0x1E
|
|
#define RW1990_2_CMD_WRITE_ROM 0xD5
|
|
|
|
#define DS1990_CMD_READ_ROM 0x33
|
|
|
|
static void rw1990_write_byte(OneWireHost* host, uint8_t value) {
|
|
for(uint8_t bitMask = 0x01; bitMask; bitMask <<= 1) {
|
|
onewire_host_write_bit(host, (bool)(bitMask & value));
|
|
furi_delay_us(5000);
|
|
}
|
|
}
|
|
|
|
static bool rw1990_read_and_compare(OneWireHost* host, const uint8_t* data, size_t data_size) {
|
|
bool success = false;
|
|
|
|
if(onewire_host_reset(host)) {
|
|
success = true;
|
|
onewire_host_write(host, DS1990_CMD_READ_ROM);
|
|
|
|
for(size_t i = 0; i < data_size; ++i) {
|
|
if(data[i] != onewire_host_read(host)) {
|
|
success = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return success;
|
|
}
|
|
|
|
bool rw1990_write_v1(OneWireHost* host, const uint8_t* data, size_t data_size) {
|
|
// Unlock sequence
|
|
onewire_host_reset(host);
|
|
onewire_host_write(host, RW1990_1_CMD_WRITE_RECORD_FLAG);
|
|
furi_delay_us(10);
|
|
|
|
onewire_host_write_bit(host, false);
|
|
furi_delay_us(5000);
|
|
|
|
// Write data
|
|
onewire_host_reset(host);
|
|
onewire_host_write(host, RW1990_1_CMD_WRITE_ROM);
|
|
|
|
for(size_t i = 0; i < data_size; ++i) {
|
|
// inverted key for RW1990.1
|
|
rw1990_write_byte(host, ~(data[i]));
|
|
furi_delay_us(30000);
|
|
}
|
|
|
|
// Lock sequence
|
|
onewire_host_write(host, RW1990_1_CMD_WRITE_RECORD_FLAG);
|
|
|
|
onewire_host_write_bit(host, true);
|
|
furi_delay_us(10000);
|
|
|
|
// TODO: Better error handling
|
|
return rw1990_read_and_compare(host, data, data_size);
|
|
}
|
|
|
|
bool rw1990_write_v2(OneWireHost* host, const uint8_t* data, size_t data_size) {
|
|
// Unlock sequence
|
|
onewire_host_reset(host);
|
|
onewire_host_write(host, RW1990_2_CMD_WRITE_RECORD_FLAG);
|
|
furi_delay_us(10);
|
|
|
|
onewire_host_write_bit(host, true);
|
|
furi_delay_us(5000);
|
|
|
|
// Write data
|
|
onewire_host_reset(host);
|
|
onewire_host_write(host, RW1990_2_CMD_WRITE_ROM);
|
|
|
|
for(size_t i = 0; i < data_size; ++i) {
|
|
rw1990_write_byte(host, data[i]);
|
|
furi_delay_us(30000);
|
|
}
|
|
|
|
// Lock sequence
|
|
onewire_host_write(host, RW1990_2_CMD_WRITE_RECORD_FLAG);
|
|
|
|
onewire_host_write_bit(host, false);
|
|
furi_delay_us(10000);
|
|
|
|
// TODO: Better error handling
|
|
return rw1990_read_and_compare(host, data, data_size);
|
|
}
|