Flipper/Applications/Official/DEV_FW/source/grnch/flipperzero-i2ctools-main/i2csniffer.h

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2022-12-29 06:30:12 +00:00
#pragma once
#include <furi.h>
#include <furi_hal.h>
// I2C Pins
#define pinSCL &gpio_ext_pc0
#define pinSDA &gpio_ext_pc1
// Bus States
typedef enum { I2C_BUS_FREE, I2C_BUS_STARTED } i2cBusStates;
// Max read size of i2c frame by message
// Arbitraly defined
// They're not real limit to maximum frames send
#define MAX_MESSAGE_SIZE 128
// Nb of records
#define MAX_RECORDS 128
/// @brief Struct used to store our reads
typedef struct {
uint8_t data[MAX_MESSAGE_SIZE];
bool ack[MAX_MESSAGE_SIZE];
uint8_t bit_index;
uint8_t data_index;
} i2cFrame;
typedef struct {
bool started;
bool first;
i2cBusStates state;
i2cFrame frames[MAX_RECORDS];
uint8_t frame_index;
uint8_t menu_index;
uint8_t row_index;
} i2cSniffer;
void clear_sniffer_buffers(i2cSniffer* i2c_sniffer);
void start_interrupts(i2cSniffer* i2c_sniffer);
void stop_interrupts();
void SDAcallback(void* _i2c_sniffer);
void SCLcallback(void* _i2c_sniffer);
i2cSniffer* i2c_sniffer_alloc();
void i2c_sniffer_free(i2cSniffer* i2c_sniffer);