3de856f8d5
* FuriHal: add bus abstraction and port some subsystem to it * Make PVS happy, cleanup code * Update API symbols for f18 * F18: backport bus changes from f7 * Revert to STOP2 sleep mode * Fix downgrading the firmware via updater * Port iButton TIM1 to furi_hal_bus * Port Infrared TIM1 and TIM2 to furi_hal_bus * Just enable the timer bus * Port furi_hal_pwm to bus API * Fix include statement * Port furi_hal_rfid to bus API * Port furi_hal_subghz and others to bus API * Remove unneeded include * Improve furi_hal_infrared defines * Reset LPTIM1 via furi_hal_bus API * Crash when trying to enable an already enabled peripheral * Better defines * Improved checks * Lots of macro wrappers * Copy spi changes for f18 * Fix crashes in LFRFID system * Fix crashes in NFC system * Improve comments * Create FuriHalBus.md * Update FuriHalBus.md * Fix crash when launching updater * Documentation: couple small fixes in FuriHalBus * FuriHal: fix copypaste in furi_hal_rfid_tim_reset * FuriHal: reset radio core related peripherals on restart * FuriHalBus: is enabled routine and bug fix for uart * RFID HAL: accomodate furi hal bus Co-authored-by: Georgii Surkov <georgii.surkov@outlook.com> Co-authored-by: Georgii Surkov <37121527+gsurkov@users.noreply.github.com> Co-authored-by: SG <who.just.the.doctor@gmail.com>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
#include "t5577.h"
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#include <furi.h>
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#include <furi_hal_rfid.h>
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#define T5577_TIMING_WAIT_TIME 400
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#define T5577_TIMING_START_GAP 30
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#define T5577_TIMING_WRITE_GAP 18
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#define T5577_TIMING_DATA_0 24
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#define T5577_TIMING_DATA_1 56
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#define T5577_TIMING_PROGRAM 700
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#define T5577_OPCODE_PAGE_0 0b10
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#define T5577_OPCODE_PAGE_1 0b11
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#define T5577_OPCODE_RESET 0b00
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static void t5577_start() {
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furi_hal_rfid_tim_read_start(125000, 0.5);
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// do not ground the antenna
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furi_hal_rfid_pin_pull_release();
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}
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static void t5577_stop() {
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furi_hal_rfid_tim_read_stop();
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furi_hal_rfid_pins_reset();
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}
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static void t5577_write_gap(uint32_t gap_time) {
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furi_hal_rfid_tim_read_pause();
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furi_delay_us(gap_time * 8);
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furi_hal_rfid_tim_read_continue();
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}
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static void t5577_write_bit(bool value) {
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if(value) {
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furi_delay_us(T5577_TIMING_DATA_1 * 8);
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} else {
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furi_delay_us(T5577_TIMING_DATA_0 * 8);
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}
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t5577_write_gap(T5577_TIMING_WRITE_GAP);
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}
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static void t5577_write_opcode(uint8_t value) {
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t5577_write_bit((value >> 1) & 1);
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t5577_write_bit((value >> 0) & 1);
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}
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static void t5577_write_reset() {
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t5577_write_gap(T5577_TIMING_START_GAP);
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t5577_write_bit(1);
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t5577_write_bit(0);
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}
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static void t5577_write_block(uint8_t block, bool lock_bit, uint32_t data) {
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furi_delay_us(T5577_TIMING_WAIT_TIME * 8);
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// start gap
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t5577_write_gap(T5577_TIMING_START_GAP);
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// opcode for page 0
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t5577_write_opcode(T5577_OPCODE_PAGE_0);
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// lock bit
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t5577_write_bit(lock_bit);
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// data
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for(uint8_t i = 0; i < 32; i++) {
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t5577_write_bit((data >> (31 - i)) & 1);
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}
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// block address
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t5577_write_bit((block >> 2) & 1);
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t5577_write_bit((block >> 1) & 1);
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t5577_write_bit((block >> 0) & 1);
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furi_delay_us(T5577_TIMING_PROGRAM * 8);
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furi_delay_us(T5577_TIMING_WAIT_TIME * 8);
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t5577_write_reset();
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}
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void t5577_write(LFRFIDT5577* data) {
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t5577_start();
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FURI_CRITICAL_ENTER();
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for(size_t i = 0; i < data->blocks_to_write; i++) {
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t5577_write_block(i, false, data->block[i]);
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}
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t5577_write_reset();
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FURI_CRITICAL_EXIT();
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t5577_stop();
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} |