Momentum-Apps/nrf24batch.c

//
// Written by vad7, 10.01.2023. vad7@yahoo.com
//
#include "nrf24batch.h"
 
#include <furi.h>
#include <furi_hal.h>
#include <gui/gui.h>
#include <dialogs/dialogs.h>
#include <input/input.h>
#include <stdlib.h>
#include <dolphin/dolphin.h>
#include <nrf24.h>
#include <u8g2.h>

#define TAG 		"nrf24batch"
#define VERSION		"1.0"
#define MAX_CHANNEL	125

#define SCAN_APP_PATH_FOLDER "/ext/nrf24batch"
#define LOG_FILENAME 		"log"
#define LOG_FILEEXT	 		".txt"
#define NRF_READ_TIMEOUT	300UL	// ms
#define WORK_PERIOD			2		// ms, frequency of individual cmds

const char SettingsFld_Info[] = "Info:";
const char SettingsFld_Ch[] = "Ch:";
const char SettingsFld_Rate[] = "Rate:";
const char SettingsFld_DPL[] = "DPL:";
const char SettingsFld_CRC[] = "CRC:";
const char SettingsFld_Address[] = "Address:";
const char SettingsFld_Resend[] = "Resend:";
const char SettingsFld_Delay[] = "Delay_ms:";
const char SettingsFld_WriteStart[] = "Write start:";
const char SettingsFld_Payload[] = "Payload struct:";
const char SettingsFld_ReadDefault[] = "R default:";
const char SettingsFld_WriteDefault[] = "W default:";
const char SettingsFld_Read[] = "R:";
const char SettingsFld_Write[] = "W:";
const char SettingsFld_ReadBatch[] = "RBatch:";
const char SettingsFld_WriteBatch[] = "WBatch:";
const char AskQuestion_Save[] = "SAVE BATCH?";
#define Settings_i 'i'
#define Settings_n 'n'
#define VAR_EMPTY ((int32_t)0x80000000)

nRF24Batch* APP;
uint8_t what_doing = 0; // 0 - setup, 1 - cmd list, 2 - view send cmd
enum {
	rwt_read_batch = 0,
	rwt_read_cmd,
	rwt_write_batch
};
uint8_t rw_type = rwt_read_batch;	// What to do: rwt_*
enum {
	sst_none = 0,
	sst_sending,
	sst_receiving,
	sst_ok,
	sst_error,
	sst_timeout
};
uint8_t send_status = sst_none;// sst_*
bool cmd_array = false;
uint8_t cmd_array_idx;
uint8_t cmd_array_cnt = 0;
uint8_t save_settings = 0;
uint16_t view_cmd[3] = {0, 0, 0}; // ReadBatch, Read, WriteBatch
uint8_t view_x = 0;
char Info[32] = "";
char screen_buf[64];
char file_name[32];
char ERR_STR[32];
uint8_t ERR = 0;
uint8_t NRF_rate; 	// 0 - 250Kbps, 1 - 1Mbps, 2 - 2Mbps
uint8_t NRF_channel;// 0..125
uint8_t NRF_DPL;	// 1 - Dynamic Payload Length
uint8_t NRF_CRC;	// 1 - No, 1 - CRC 1byte, 2 - CRC 2byte
uint8_t NRF_Payload;// Payload len in bytes or Minimum payload in sniff mode, 0..32
uint8_t NRF_AA_OFF;	// Disable Auto Acknowledgement
bool NRF_ERROR = 0;
bool NRF_INITED = false;
uint8_t NRF_last_packet_send_st = 0;
uint8_t NRF_resend = 1; // number of transaction attempts 
uint8_t NRF_repeat = 0; // count number of repeated requests (until < NRF_resend)
uint32_t NRF_time;

uint8_t addr[5];			// nRF24 address, MSB first
uint8_t addr_len;			// 2..5
uint8_t payload[32];
uint8_t payload_receive[32];
uint8_t payload_struct[32]; 	// sizeof(1..4) in bytes of each field, example: 2,1,1
uint8_t payload_fields = 0;
uint8_t payload_size = 0;		// bytes
FuriString *ReadDefault = NULL;
FuriString *WriteDefault = NULL;
FuriString *WriteStart = NULL;
uint32_t delay_between_pkt = 5;// ms
FuriString *Constants = NULL;		// text of STR=x
FuriString **Read_cmd = NULL;		// Names of read cmd
uint16_t Read_cmd_Total = 0;
FuriString **Log = NULL;			// Strings: var=n
uint16_t Log_Total = 0;
uint8_t ask_question = 0;			// 1 - Ask now
uint8_t ask_question_answer = 0;	// 0 - no, 1 - yes

FuriString **ReadBatch_cmd = NULL;	// Names of read batch cmd
uint16_t ReadBatch_cmd_Total = 0;
char *ReadBatch_cmd_curr = NULL;	// =0xFFFFFFFF - finish
uint16_t view_Batch = 0;		// view pos

FuriString **WriteBatch_cmd = NULL;	// Names of write batch cmd
uint16_t WriteBatch_cmd_Total = 0;
char *WriteBatch_cmd_curr = NULL;	// =0xFFFFFFFF - finish
uint16_t view_WriteBatch = 0;		// view pos
Stream* file_stream = NULL;

//#define MIN(a, b)  ((a<b)?a:b)

static uint8_t GetHexVal(char hex) {
	return (uint8_t)hex - ((uint8_t)hex < 58 ? 48 : ((uint8_t)hex < 97 ? 55 : 87));
}

// Return num bytes in array
static uint8_t ConvertHexToArray(char * hex, uint8_t * array, uint8_t maxlen) {
	uint8_t len = 0;
	while(maxlen) {
		uint8_t ch = *hex++;
		if(ch < ' ') break;
		if(ch < '0') continue;
		*array++ = (GetHexVal(ch) << 4) + GetHexVal(*hex++);
		len++;
		maxlen--;
	}
	return len;
}

int32_t str_to_int(char *p)
{
	if(*(p+1) == 'x') { // hex
		return strtol(p + 2, NULL, 16);
	} else return strtol(p, NULL, 10);
}

void str_rtrim(char *p)
{
	char *delim_col = strchr(p, '\r'); 
	if(delim_col) *delim_col = '\0';
	else { 
		delim_col = strchr(p, '\n'); 
		if(delim_col) *delim_col = '\0';
	}
}

static void add_to_str_hex_bytes(char *out, uint8_t *arr, int bytes)
{
	if(bytes <= 0) return;
	out += strlen(out);
	do {
		snprintf(out, 3, "%02X", *arr++);
		out += 2;
	} while(--bytes);
}

void free_Log()
{
	if(Log_Total) {
		for(uint16_t i = 0; i < Log_Total; i++) furi_string_free(Log[i]);
		Log_Total = 0;
	}
	if(Log) {
		free(Log);
		Log = NULL;
	}
}

void free_store(void)
{
	if(Constants) {
		furi_string_free(Constants);
		Constants = NULL;
	}
	if(ReadDefault) {
		furi_string_free(ReadDefault);
		ReadDefault = NULL;
	}
	if(WriteDefault) {
		furi_string_free(WriteDefault);
		WriteDefault = NULL;
	}
	if(WriteStart) {
		furi_string_free(WriteStart);
		WriteDefault = NULL;
	}
	if(Read_cmd_Total) {
		for(uint16_t i = 0; i < Read_cmd_Total; i++) furi_string_free(Read_cmd[i]);
		Read_cmd_Total = 0;
	}
	if(Read_cmd) {
		free(Read_cmd);
		Read_cmd = NULL;
	}
	if(ReadBatch_cmd_Total) {
		for(uint16_t i = 0; i < ReadBatch_cmd_Total; i++) furi_string_free(ReadBatch_cmd[i]);
		ReadBatch_cmd_Total = 0;
	}
	if(ReadBatch_cmd) {
		free(ReadBatch_cmd);
		ReadBatch_cmd = NULL;
	}
	if(WriteBatch_cmd_Total) {
		for(uint16_t i = 0; i < WriteBatch_cmd_Total; i++) furi_string_free(WriteBatch_cmd[i]);
		WriteBatch_cmd_Total = 0;
	}
	if(WriteBatch_cmd) {
		free(WriteBatch_cmd);
		WriteBatch_cmd = NULL;
	}
	free_Log();
}

static bool select_settings_file() {
	DialogsApp* dialogs = furi_record_open("dialogs");
	bool result = false;
	FuriString* path;
	path = furi_string_alloc();
	furi_string_set(path, SCAN_APP_PATH_FOLDER);

	DialogsFileBrowserOptions browser_options;
	dialog_file_browser_set_basic_options(&browser_options, ".txt", NULL);
	browser_options.hide_ext = false;

	bool ret = dialog_file_browser_show(dialogs, path, path, &browser_options);

	furi_record_close("dialogs");
	if(ret) {
		if(!file_stream_open(file_stream, furi_string_get_cstr(path), FSAM_READ, FSOM_OPEN_EXISTING)) {
			FURI_LOG_D(TAG, "Cannot open file \"%s\"", furi_string_get_cstr(path));
			file_stream_close(file_stream);
		} else {
			FURI_LOG_D(TAG, "Open file \"%s\"", furi_string_get_cstr(path));
			strncpy(file_name, furi_string_get_cstr(path) + sizeof(SCAN_APP_PATH_FOLDER), sizeof(file_name));
			result = true;
		}
	}
	furi_string_free(path);
	return result;
}

static void prepare_nrf24(void)
{
	if(!NRF_INITED) {
		nrf24_write_reg(nrf24_HANDLE, REG_RF_CH, NRF_channel);
		nrf24_write_reg(nrf24_HANDLE, REG_RF_SETUP, (NRF_rate == 0 ? 0b00100000 : NRF_rate == 1 ? 0 : 0b00001000) | 0b111); // +TX high power
		nrf24_write_reg(nrf24_HANDLE, REG_CONFIG, 0x70 | ((NRF_CRC == 1 ? 0b1000 : NRF_CRC == 2 ? 0b1100 : 0))); // Mask all interrupts
		nrf24_write_reg(nrf24_HANDLE, REG_SETUP_RETR, ((NRF_rate == 0 ? 0b0100 : 0b0010)<<4) | 0b1111); // Automatic Retransmission, ARD, ARC
		nrf24_write_reg(nrf24_HANDLE, REG_EN_AA, 0x01); // Auto acknowledgement
		nrf24_write_reg(nrf24_HANDLE, REG_FEATURE, NRF24_EN_DYN_ACK | (NRF_DPL ? 4 : 0)); // Enables the W_TX_PAYLOAD_NOACK command, Disable Payload with ACK, set Dynamic Payload
		nrf24_write_reg(nrf24_HANDLE, REG_DYNPD, NRF_DPL ? 0x3F : 0); // Enable dynamic payload reg
		nrf24_write_reg(nrf24_HANDLE, RX_PW_P0, payload_size);
		nrf24_set_maclen(nrf24_HANDLE, addr_len);
		nrf24_set_mac(REG_RX_ADDR_P0, addr, addr_len);
		uint8_t tmp[5] = { 0 };
		nrf24_read_reg(nrf24_HANDLE, REG_RX_ADDR_P0, tmp, addr_len);
		for(uint8_t i = 0; i < addr_len / 2; i++) {
			uint8_t tb = tmp[i];
			tmp[i] = tmp[addr_len - i - 1];
			tmp[addr_len - i - 1] = tb;
		}
		NRF_ERROR = memcmp(addr, tmp, addr_len) != 0;
		nrf24_set_mac(REG_TX_ADDR, addr, addr_len);
		nrf24_write_reg(nrf24_HANDLE, REG_EN_RXADDR, 1);
		//nrf24_set_idle(nrf24_HANDLE);
		NRF_INITED = true;
	}
	nrf24_flush_tx(nrf24_HANDLE);
	nrf24_flush_rx(nrf24_HANDLE);
	nrf24_write_reg(nrf24_HANDLE, REG_STATUS, MAX_RT | RX_DR | TX_DS);
	furi_hal_gpio_write(nrf24_CE_PIN, false);
}

// true - ok
uint8_t nrf24_send_packet()
{
	if(furi_log_get_level() == FuriLogLevelDebug) {
		char buf[65]; buf[0] = 0; add_to_str_hex_bytes(buf, payload, payload_size); FURI_LOG_D(TAG, "SEND: %s", buf);
	}
	//nrf24_flush_tx(nrf24_HANDLE);
	//nrf24_write_reg(nrf24_HANDLE, REG_STATUS, RX_DR | TX_DS | MAX_RT);
	NRF_last_packet_send_st = nrf24_txpacket(nrf24_HANDLE, payload, payload_size, true); // ACK
	if(NRF_last_packet_send_st) { 
		if((rw_type == rwt_read_cmd || rw_type == rwt_read_batch) && send_status == sst_sending) { // Read
			nrf24_set_rx_mode(nrf24_HANDLE);
			send_status = sst_receiving; // receiving
		}
	} else notification_message(APP->notification, &sequence_blink_red_100);
	NRF_time = furi_get_tick();
	FURI_LOG_D(TAG, "Send packet: %d%s", NRF_last_packet_send_st, send_status == sst_receiving ? ", Receiving" : "");
	return NRF_last_packet_send_st;
}

uint8_t nrf24_resend_packet()
{
	if(Log_Total) {
		FuriString *str = Log[Log_Total - 1];
		char *p = strstr(furi_string_get_cstr(str), ": ");
		if(p) furi_string_left(str, p - furi_string_get_cstr(str) + 2);
	}
	return nrf24_send_packet();
}

// true - new packet
bool nrf24_read_newpacket() {
	bool found = false;
	uint8_t packetsize;
	uint8_t st = nrf24_rxpacket(nrf24_HANDLE, payload_receive, &packetsize, NRF_DPL ? 0 : payload_size);
	if(st & RX_DR) {
		NRF_time = furi_get_tick();
		if(furi_log_get_level() == FuriLogLevelDebug) {
			char buf[65]; buf[0] = 0; add_to_str_hex_bytes(buf, payload_receive, packetsize); FURI_LOG_D(TAG, "READ(%X): %s", st, buf);
		}
		if(Log_Total) {
			FuriString *str = Log[Log_Total - 1];
			uint8_t size = 1;
			char *p = strchr((char*)furi_string_get_cstr(str), '*');
			if(p) {
				p++;
				if(*p == '=') size = 0; // string
				else {
					size = *p - '0';
					if(size > 4) size = 0;
				}
			}
			int32_t var;
			if(size <= 1) var = *payload_receive;
			else if(size == 2) var = *(int16_t*)payload_receive;
			else if(size == 3) var = (*(uint32_t*)payload_receive) & 0xFFFFFF;
			else var = *(int32_t*)payload_receive;
			//FURI_LOG_D(TAG, "VAR(%d): %ld", size, var);
			if(size == 0) furi_string_cat_printf(str, "%c", (char)var); 
			else {
				if(var >= 0 && var <= 9) furi_string_cat_printf(str, "%ld", var);
				else {
					char hex[9];
					snprintf(hex, sizeof(hex), "%lX", var);
					furi_string_cat_printf(str, "%ld (%s)", var, hex + (var < 0 ? 8 - size * 2 : 0));
				}
			}
			if(cmd_array) {
				if(--cmd_array_cnt) {
					furi_string_cat_str(str, ",");
					payload[cmd_array_idx]++;
					NRF_repeat = 0;
					send_status = sst_sending;
					nrf24_send_packet();
				} else send_status = sst_ok;
			} else {
				if(size == 0) { // string, until '\0'
					if(var == 0) send_status = sst_ok;
				} else send_status = sst_ok;
			}
		}
		//notification_message(APP->notification, &sequence_blink_white_100);
		found = true;
	}
	return found;
}

// Search in constatnt pull (Const1=n; Const2=n;...)
// -32768 - not found
int32_t subs_constant(char *p, uint8_t len)
{
	char *c = (char*)furi_string_get_cstr(Constants);
	while((c = strchr(c, *p))) {
		if(strncmp(c, p, len) != 0) {
			c++;
			continue;
		}
		if(c == (char*)furi_string_get_cstr(Constants) || *(c-1) == ';' ||  *(c-1) <= ' ') {
			c += len;
			if(*c == '=') {
				c++;
				return str_to_int(c);
			}
		} else c += len;
	}
	return VAR_EMPTY;
}

// fill payload with default = p
// if var_n = VAR_EMPTY - skip filling var_*
bool fill_payload(char *p, uint8_t *idx_i, int32_t var_n)
{
	if(idx_i) *idx_i = 255;
	uint8_t fld = 0; // field #
	uint8_t idx = 0; // byte index
	do {
		int32_t b = 0;
		char *end = strchr(p, ',');
		if(*p >= '0' && *p <= '9') { // Number found
			b = str_to_int(p);
		} else if(*p == 'i' && *(p + 1) == ':') { // 'i:' array index
			b = str_to_int(p + 2);
		 	if(idx_i) *idx_i = idx;
		} else if(*p == 'n' && *(p + 1) < '0') { // var_n
			if(var_n != VAR_EMPTY) b = var_n;
		} else if(*p >= 'A') { // constant found
			b = subs_constant(p, end ? (uint8_t)(end - p) : strlen(p));
			if(b == VAR_EMPTY) {
				ERR = 1;
				strcpy(ERR_STR, "No ");
				strcat(ERR_STR, p);
				FURI_LOG_D(TAG, "Constant not found: %s", p);
				return false;
			}
		} else if(end == p) {
			idx += payload_struct[fld];
		} else {
			ERR = 2;
			strcpy(ERR_STR, "char: ");
			uint8_t l = strlen(ERR_STR);
			ERR_STR[l] = *p;
			ERR_STR[l+1] = '\0';
			FURI_LOG_D(TAG, "Wrong format char(%c)", *p);
			return false;
		}
		if(end != p) {
			payload[idx++] = b;
			if(payload_struct[fld] > 1) payload[idx++] = b >> 8;
			if(payload_struct[fld] > 2) payload[idx++] = b >> 16;
			if(payload_struct[fld] > 3) payload[idx++] = b >> 24;
		}
		if(++fld == payload_fields || idx >= sizeof(payload) || end == NULL) break;
		p = end + 1;
	} while(1);
	return true;
}

// Cmd: "name=payload"
bool Run_Read_cmd(FuriString *cmd)
{
	char *p = (char*)furi_string_get_cstr(cmd);
	p = strchr(p, '=');
	if(p == NULL) return false;
	if(Log == NULL) Log = malloc(sizeof(Log));
	else Log = realloc(Log, sizeof(Log) * (Log_Total + 1));
	if(Log == NULL) {
		ERR = 3;
		strcpy(ERR_STR, "Memory low");
		FURI_LOG_D(TAG, ERR_STR);
		return false;
	}
	FuriString *fs = furi_string_alloc();
	furi_string_set_strn(fs, (char*)furi_string_get_cstr(cmd), p - (char*)furi_string_get_cstr(cmd));
	furi_string_cat_str(fs, ": ");
	Log[Log_Total++] = fs;
	p++;
	memset(payload, 0, sizeof(payload));
	if(ReadDefault && !fill_payload((char*)furi_string_get_cstr(ReadDefault), NULL, VAR_EMPTY)) return false;
	if(!fill_payload(p, &cmd_array_idx, VAR_EMPTY)) return false;
	memset(payload_receive, 0, sizeof(payload_receive));
	cmd_array = false;
	if(*(p - 2) == ']' && cmd_array_idx != 255) { // array
		p = strchr(furi_string_get_cstr(cmd), '[');
		if(p) {
			cmd_array_cnt = str_to_int(p + 1);
			if(cmd_array_cnt > 1) cmd_array = true; // array
		}
	}
	prepare_nrf24();
	if(NRF_ERROR) return false;
	what_doing = 2;
	NRF_repeat = 0;
	send_status = sst_sending; // Read - sending
	nrf24_send_packet();
	return true;
}

// run commands one by one, true - command running
bool Run_ReadBatch_cmd(FuriString *cmd)
{
	char *p;
	if(cmd) {
		p = strchr((char*)furi_string_get_cstr(cmd), ':');
		if(p == NULL) return false;
		p += 2;
		ReadBatch_cmd_curr = NULL;
		free_Log();
	} else {
		if(ReadBatch_cmd_curr) p = ReadBatch_cmd_curr; else return false;
	}
	char *end = strchr(p, ';');
	uint8_t len;
	if(end) len = end - p;
	else {
		str_rtrim(p);
		len = strlen(p);
	}
	for(uint16_t i = 0; i < Read_cmd_Total; i++) {
		FuriString *fs = Read_cmd[i];
		if(strncmp((char*)furi_string_get_cstr(fs), p, len) == 0) {
			char c = *((char*)furi_string_get_cstr(fs) + len);
			if(c != '=' && c != '*' && c != '[') continue;
			if(end) ReadBatch_cmd_curr = end + 1; else ReadBatch_cmd_curr = (char*)0xFFFFFFFF;
			Run_Read_cmd(fs);
			return true;
		}
	}
	ERR = 4;
	strcpy(ERR_STR, "Not found");
	FURI_LOG_D(TAG, "CMD %s: %s", ERR_STR, p == NULL ? "" : p);
	return false;
}

bool Run_WriteBatch_cmd(FuriString *cmd)
{
	char *p;
	send_status = sst_none;
	prepare_nrf24();
	if(NRF_ERROR) return false;
	if(cmd) {
		p = strchr((char*)furi_string_get_cstr(cmd), ':');
		if(p == NULL) return false;
		p += 2;
		WriteBatch_cmd_curr = NULL;
		free_Log();
		if(WriteStart) {
			if(!fill_payload((char*)furi_string_get_cstr(WriteStart), NULL, VAR_EMPTY)) return false;
			send_status = sst_sending;
			uint8_t i = 0;
			do {
				if(nrf24_send_packet()) break;
				furi_delay_ms(delay_between_pkt);
			} while(i++ < NRF_resend);
			if(i >= NRF_resend && i) { // not ok
				send_status = sst_error;
				return false;
			}
		}
	} else {
		if(WriteBatch_cmd_curr) p = WriteBatch_cmd_curr; else return false;
	}
	char *end = strchr(p, ';');
	uint8_t len;
	if(end) {
		len = end - p;
		WriteBatch_cmd_curr = end + 1;
	} else {
		str_rtrim(p);
		len = strlen(p);
		WriteBatch_cmd_curr = (char*)0xFFFFFFFF;
	}
	FuriString *fs = furi_string_alloc();
	if(Log == NULL) Log = malloc(sizeof(Log));
	else Log = realloc(Log, sizeof(Log) * (Log_Total + 1));
	if(Log == NULL) {
		ERR = 3;
		strcpy(ERR_STR, "Memory low");
		FURI_LOG_D(TAG, ERR_STR);
		return false;
	}
	furi_string_set_strn(fs, p, len);
	Log[Log_Total++] = fs;
	char *arr = NULL;
	cmd_array = false;
	int32_t new = 0;
	for(uint8_t i = 0; i < len; i++) {
		if(p[i] == '=') {
			len = i;
			char *p2 = p + i + 1;
			if(*p2 == '{') {
				arr = ++p2; // array
				cmd_array = true;
			}
			new = str_to_int(p2);
			break;
		}
	}
	FURI_LOG_D(TAG, "WriteBatch: =%d, (%d)%s", (int)new, len, p);
	FuriString* str = furi_string_alloc();
	stream_rewind(file_stream);
	while(stream_read_line(file_stream, str)) {
		char *w = (char*)furi_string_get_cstr(str);
		if(strncmp(w, SettingsFld_Write, sizeof(SettingsFld_Write)-1) != 0) continue;
		w +=  sizeof(SettingsFld_Write);
		char* delim_col = strchr(w, '=');
		if(delim_col == NULL || len != delim_col - w) continue;
		if(strncmp(p, w, len) != 0) continue;
		delim_col++;
		str_rtrim(delim_col);
		cmd_array_cnt = 255;
		do {
			memset(payload, 0, sizeof(payload));
			if(WriteDefault && !fill_payload((char*)furi_string_get_cstr(WriteDefault), NULL, new)) return false;
			if(!fill_payload(delim_col, &cmd_array_idx, VAR_EMPTY)) return false;
			if(cmd_array && cmd_array_idx != 255) {
 				if(cmd_array_cnt != 255) payload[cmd_array_idx] = cmd_array_cnt;
			} else cmd_array = false;
			send_status = sst_sending;
			NRF_repeat = 0;
			uint8_t i = 0;
			do {
				if(nrf24_send_packet()) break;
				furi_delay_ms(delay_between_pkt);
			} while(i++ < NRF_resend);
			if(i < NRF_resend || i == 0) { // ok
				if(cmd_array) { // array
					for(; arr != NULL;) {
						if(*arr == ',') break;
						if(*arr == '}' || *arr < ' ') arr = NULL; else arr++;
					}
					if(arr == NULL) {
						send_status = sst_ok; 
						break;
					}
					arr++;
					new = str_to_int(arr);
					cmd_array_cnt = payload[cmd_array_idx] + 1;
					continue;
				} else send_status = sst_ok; 
			}
			break;
		} while(1);
		if(send_status != sst_ok) { 
			send_status = sst_error;
			furi_string_cat_str(fs, "!");
		}
		return send_status == sst_ok;
	}
	ERR = 7;
	strcpy(ERR_STR, "NOT FOUND!");
	send_status = sst_error;
	return false;
}

// Return 0 - success, otherwise an error
static uint8_t load_settings_file() {
	uint8_t err = 0;
	FURI_LOG_D(TAG, "Loading settings file");
	FuriString* str = furi_string_alloc();
	free_store();
	Info[0] = '\0';
	NRF_INITED = false;
	while(stream_read_line(file_stream, str)) {
		char *p = (char*)furi_string_get_cstr(str);
		if(*p <= ' ') continue;
		//char* delim_eq = strchr(p, '=');
		char* delim_col = strchr(p, ':');
		if(delim_col == NULL) { // Constant found - no ':'
			if(Constants == NULL) {
				Constants = furi_string_alloc_set(str);
			} else furi_string_cat(Constants, str);
		} else {
			str_rtrim(p);
			if(strncmp(p, SettingsFld_Rate, sizeof(SettingsFld_Rate)-1) == 0) {
				NRF_rate = atoi(p + sizeof(SettingsFld_Rate));
			} else if(strncmp(p, SettingsFld_Info, sizeof(SettingsFld_Info)-1) == 0) {
				strncpy(Info, p + sizeof(SettingsFld_Info), sizeof(Info)-1);
			} else if(strncmp(p, SettingsFld_Ch, sizeof(SettingsFld_Ch)-1) == 0) {
				NRF_channel = atoi(p + sizeof(SettingsFld_Ch));
			} else if(strncmp(p, SettingsFld_Address, sizeof(SettingsFld_Address)-1) == 0) {
				p += sizeof(SettingsFld_Address);
				addr_len = ConvertHexToArray(p, addr, 5);
			} else if(strncmp(p, SettingsFld_CRC, sizeof(SettingsFld_CRC)-1) == 0) {
				NRF_CRC = atoi(p + sizeof(SettingsFld_CRC));
			} else if(strncmp(p, SettingsFld_DPL, sizeof(SettingsFld_DPL)-1) == 0) {
				NRF_DPL = atoi(p + sizeof(SettingsFld_DPL));
			} else if(strncmp(p, SettingsFld_Resend, sizeof(SettingsFld_Resend)-1) == 0) {
				NRF_resend = atoi(p + sizeof(SettingsFld_Resend));
			} else if(strncmp(p, SettingsFld_Delay, sizeof(SettingsFld_Delay)-1) == 0) {
				delay_between_pkt = atoi(p + sizeof(SettingsFld_Delay));
			} else if(strncmp(p, SettingsFld_Payload, sizeof(SettingsFld_Payload)-1) == 0) {
				p += sizeof(SettingsFld_Payload);
				payload_fields = 0;
				payload_size = 0;
				do {
					uint8_t b = atoi(p);
					if(b < 1 || b > 4) {
						FURI_LOG_D(TAG, "Wrong payload format (%d)", b);
						err = 3;
						break;
					}
					payload_struct[payload_fields++] = b;
					payload_size += b;
					if(payload_fields == sizeof(payload_struct) - 1) break;
					if((p = strchr(p, ',')) == NULL) break;
					p++;
				} while(1);
				FURI_LOG_D(TAG, "Payload fields %d: %d,%d,%d", payload_fields, payload_struct[0], payload_struct[1], payload_struct[2]);
			} else if(strncmp(p, SettingsFld_ReadDefault, sizeof(SettingsFld_ReadDefault)-1) == 0) {
				ReadDefault = furi_string_alloc_set_str(p + sizeof(SettingsFld_ReadDefault));
			} else if(strncmp(p, SettingsFld_WriteStart, sizeof(SettingsFld_WriteStart)-1) == 0) {
				WriteStart = furi_string_alloc_set_str(p + sizeof(SettingsFld_WriteStart));
			} else if(strncmp(p, SettingsFld_WriteDefault, sizeof(SettingsFld_WriteDefault)-1) == 0) {
				WriteDefault = furi_string_alloc_set_str(p + sizeof(SettingsFld_WriteDefault));
			} else if(strncmp(p, SettingsFld_Read, sizeof(SettingsFld_Read)-1) == 0) {
				p += sizeof(SettingsFld_Read);
				if(Read_cmd == NULL) Read_cmd = malloc(sizeof(Read_cmd));
				else {
					Read_cmd = realloc(Read_cmd, sizeof(Read_cmd) * (Read_cmd_Total + 1));
				}
				if(Read_cmd == NULL) {
					FURI_LOG_D(TAG, "Memory low, err 4");
					err = 4;
					break;
				}
				Read_cmd[Read_cmd_Total++] = furi_string_alloc_set_str(p);
			} else if(strncmp(p, SettingsFld_ReadBatch, sizeof(SettingsFld_ReadBatch)-1) == 0) {
				p += sizeof(SettingsFld_ReadBatch);
				if(ReadBatch_cmd == NULL) ReadBatch_cmd = malloc(sizeof(ReadBatch_cmd));
				else {
					ReadBatch_cmd = realloc(ReadBatch_cmd, sizeof(ReadBatch_cmd) * (ReadBatch_cmd_Total + 1));
				}
				if(ReadBatch_cmd == NULL) {
					FURI_LOG_D(TAG, "Memory low, err 5");
					err = 5;
					break;
				}
				ReadBatch_cmd[ReadBatch_cmd_Total++] = furi_string_alloc_set_str(p);
			} else if(strncmp(p, SettingsFld_WriteBatch, sizeof(SettingsFld_WriteBatch)-1) == 0) {
				p += sizeof(SettingsFld_WriteBatch);
				if(WriteBatch_cmd == NULL) WriteBatch_cmd = malloc(sizeof(WriteBatch_cmd));
				else {
					WriteBatch_cmd = realloc(WriteBatch_cmd, sizeof(WriteBatch_cmd) * (WriteBatch_cmd_Total + 1));
				}
				if(WriteBatch_cmd == NULL) {
					FURI_LOG_D(TAG, "Memory low, err 6");
					err = 6;
					break;
				}
				WriteBatch_cmd[WriteBatch_cmd_Total++] = furi_string_alloc_set_str(p);
			}
		}
	}
	furi_string_free(str);
	return err;
}

static void save_batch(void)
{
// to do...
}

static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queue) {
	furi_assert(event_queue);
	PluginEvent event = {.type = EventTypeKey, .input = *input_event};
	furi_message_queue_put(event_queue, &event, FuriWaitForever);
}

static void render_callback(Canvas* const canvas, void* ctx) {
	const PluginState* plugin_state = acquire_mutex((ValueMutex*)ctx, 25);
	if(plugin_state == NULL) return;
	//canvas_draw_frame(canvas, 0, 0, 128, 64); // border around the edge of the screen
	if(what_doing == 0) {
		canvas_set_font(canvas, FontSecondary); // 8x10 font, 6 lines
		snprintf(screen_buf, sizeof(screen_buf), "Open: %s", file_name);
		canvas_draw_str(canvas, 10, 10, screen_buf);
		if(addr_len) {
			canvas_draw_str(canvas, 10, 22, Info);
			strcpy(screen_buf, "Address: ");
			add_to_str_hex_bytes(screen_buf, addr, addr_len);
			canvas_draw_str(canvas, 10, 32, screen_buf);
			snprintf(screen_buf, sizeof(screen_buf), "Ch: %d, Rate: %d", NRF_channel, NRF_rate);
			canvas_draw_str(canvas, 10, 42, screen_buf);
			snprintf(screen_buf, sizeof(screen_buf), "RB: %d, R: %d, WB: %d", ReadBatch_cmd_Total, Read_cmd_Total, WriteBatch_cmd_Total);
			canvas_draw_str(canvas, 10, 52, screen_buf);
			//canvas_draw_str(canvas, 10, 60, screen_buf);
		} else {
			snprintf(screen_buf, sizeof(screen_buf), "ver. %s (vad7)", VERSION);
			canvas_draw_str(canvas, 10, 60, screen_buf);
		}
		canvas_draw_str(canvas, 0, 10, ">");
	} else if(what_doing == 1){
		canvas_set_font(canvas, FontBatteryPercent); // 5x7 font, 9 lines, 25 cols
		char delim;
		uint16_t max_i;
		FuriString ***fsa;
		if(rw_type == rwt_read_batch) {
			canvas_draw_str(canvas, 0, 7, "Read Batch:");
			max_i = ReadBatch_cmd_Total;
			fsa = &ReadBatch_cmd;
			delim = ':';
		} else if(rw_type == rwt_read_cmd) {
			canvas_draw_str(canvas, 0, 7, "Read Command:");
			max_i = Read_cmd_Total;
			fsa = &Read_cmd;
			delim = '=';
		} else { // rwt_write_batch
			if(ask_question) {
				snprintf(screen_buf, sizeof(screen_buf), "RUN WRITE BATCH? %s", ask_question_answer ? "YES" : "NO");
			} else {
				strcpy(screen_buf, "Write Batch:");
			}
			canvas_draw_str(canvas, 0, 7, screen_buf);
			max_i = WriteBatch_cmd_Total;
			fsa = &WriteBatch_cmd;
			delim = ':';
		}
		if(NRF_ERROR) canvas_draw_str(canvas, 70, 7, "nRF24 ERROR!");
		uint16_t page = view_cmd[rw_type] & ~7;
		for(uint8_t i = 0; i < 8 && page + i < max_i; i++) {
			uint16_t y = 14 + i * 7;
			char *p = (char*) furi_string_get_cstr((*fsa)[page + i]);
			char *end = strchr(p, delim);
			if(end) {
				if(*(end - 2) == '*') end -= 2; // *n - var size set
				uint16_t len = MIN((end - p), 30);
				strncpy(screen_buf, p, len);
				screen_buf[len] = '\0';
				canvas_draw_str(canvas, 5, y, screen_buf);
			}
			if((view_cmd[rw_type] & 7) == i) {
				canvas_draw_str(canvas, 0, y, ">");
				canvas_draw_str(canvas, -1, y, ">");
			}
		}
	} else { // what_doing == 2
		if(rw_type == rwt_read_cmd) {	// Read command
			canvas_set_font(canvas, FontSecondary); // 8x10 font, 6 lines
			strcpy(screen_buf, "Read cmd:");
			if(NRF_ERROR) strcat(screen_buf, "nRF24 ERROR!");
			else if(ERR) {
				snprintf(screen_buf + strlen(screen_buf), 16, " Error %d", ERR);
				canvas_draw_str(canvas, 0, 60, ERR_STR);
			} else if(send_status == sst_sending) strcat(screen_buf, " sending");
			else if(send_status == sst_receiving) strcat(screen_buf, " receiving");
			else if(send_status == sst_error) strcat(screen_buf, " NO ACK!");
			else if(send_status == sst_timeout) strcat(screen_buf, " TIMEOUT!");
			else if(send_status == sst_ok) strcat(screen_buf, " Ok");
			canvas_draw_str(canvas, 0, 10, screen_buf);
			if(Log_Total) {
				char *p = (char*)furi_string_get_cstr(Log[Log_Total - 1]);
				strncpy(screen_buf, p + MIN(view_x, strlen(p)), 30);
				canvas_draw_str(canvas, 0, 15 + 10, screen_buf);
			}

		} else { // if(rw_type == rwt_read_batch || rw_type == rwt_write_batch)
			canvas_set_font(canvas, FontBatteryPercent); // 5x7 font, 9 lines, 25 cols
			if(ask_question && rw_type == rwt_read_batch) {
				snprintf(screen_buf, sizeof(screen_buf), "SAVE AS WRITE BATCH? %s", ask_question_answer ? "YES" : "NO");
			} else {
				strcpy(screen_buf, rw_type == rwt_read_batch ? "Read Batch:" : "Write Batch:");
				if(NRF_ERROR) strcat(screen_buf, "nRF24 ERROR!");
				else if(ERR) snprintf(screen_buf + strlen(screen_buf), 16, " Error %d", ERR); 
				else if(send_status == sst_error) strcat(screen_buf, " NO ACK!");
				else if(send_status == sst_timeout) strcat(screen_buf, " TIMEOUT!");
				else if(send_status == sst_ok && ((rw_type == rwt_read_batch && (uint32_t)ReadBatch_cmd_curr == 0xFFFFFFFF) 
					|| (rw_type == rwt_write_batch && (uint32_t)WriteBatch_cmd_curr == 0xFFFFFFFF)))
					strcat(screen_buf, " Ok");
				else strcat(screen_buf, " working");
			}
			canvas_draw_str(canvas, 0, 7, screen_buf);
			if(Log_Total) {
				uint16_t page = view_Batch & ~7;
				for(uint8_t i = 0; i < 8 && page + i < Log_Total; i++) {
					uint16_t y = 14 + i * 7;
					screen_buf[sizeof(screen_buf) - 1] = '\0';
					char *p = (char*)furi_string_get_cstr(Log[page + i]);
					strncpy(screen_buf, p + MIN(view_x, strlen(p)), 30);
					if(ERR && page + i == Log_Total - 1) strcat(screen_buf, ERR_STR);
					canvas_draw_str(canvas, 5, y, screen_buf);
					if((view_Batch & 7) == i) {
						canvas_draw_str(canvas, 0, y, ">");
						canvas_draw_str(canvas, -1, y, ">");
					}
				}
			}
		}
	}
	release_mutex((ValueMutex*)ctx, plugin_state);
} 

void work_timer_callback(void* ctx)
{
	UNUSED(ctx);
	if(what_doing == 2) {
		if(rw_type == rwt_write_batch) {
			if(send_status == sst_ok) {
				if((uint32_t)WriteBatch_cmd_curr != 0xFFFFFFFF && ERR == 0 && furi_get_tick() - NRF_time >= delay_between_pkt) {
					Run_WriteBatch_cmd(NULL);
				}
			}
		} else if(send_status == sst_sending) { // sending
			if(!NRF_last_packet_send_st) { // No ACK on last attempt
				if(furi_get_tick() - NRF_time > delay_between_pkt) {
					if(NRF_repeat++ < NRF_resend) nrf24_resend_packet(); else send_status = sst_error; // error NO_ACK
				}
			}
		} else if(send_status == sst_receiving) { // receiving
			for(uint8_t i = 0; i < 3; i++) {
				bool new = nrf24_read_newpacket();
				if(new) {
					if(send_status != sst_receiving) break;
				} else if(furi_get_tick() - NRF_time > NRF_READ_TIMEOUT) {
					if(NRF_repeat++ < NRF_resend) {
						send_status = sst_sending;
						nrf24_resend_packet();
					} else {
						FURI_LOG_D(TAG, "TIMEOUT: %lu", furi_get_tick() - NRF_time);
						send_status = sst_timeout;
					}
					break;
				}
			}
		} else if(send_status == sst_ok) {
			if(rw_type == rwt_read_batch) {
				if((uint32_t)ReadBatch_cmd_curr != 0xFFFFFFFF && ERR == 0 && furi_get_tick() - NRF_time >= delay_between_pkt) {
					Run_ReadBatch_cmd(NULL);
				}
			}
		}
	}
}

int32_t nrf24batch_app(void* p) {
	UNUSED(p);
	APP = malloc(sizeof(nRF24Batch));
	APP->event_queue = furi_message_queue_alloc(8, sizeof(PluginEvent));
	APP->plugin_state = malloc(sizeof(PluginState));
	ValueMutex state_mutex;
	if(!init_mutex(&state_mutex, APP->plugin_state, sizeof(PluginState))) {
		furi_message_queue_free(APP->event_queue);
		FURI_LOG_E(TAG, "cannot create mutex");
		free(APP->plugin_state);
		return 255;
	}
	nrf24_init();

	// Set system callbacks
	APP->view_port = view_port_alloc();
	view_port_draw_callback_set(APP->view_port, render_callback, &state_mutex);
	view_port_input_callback_set(APP->view_port, input_callback, APP->event_queue);

	// Open GUI and register view_port
	APP->gui = furi_record_open(RECORD_GUI);
	gui_add_view_port(APP->gui, APP->view_port, GuiLayerFullscreen);
	APP->notification = furi_record_open(RECORD_NOTIFICATION);
	APP->storage = furi_record_open(RECORD_STORAGE);
	storage_common_mkdir(APP->storage, SCAN_APP_PATH_FOLDER);
	file_stream = file_stream_alloc(APP->storage);
	FuriTimer *work_timer = furi_timer_alloc(work_timer_callback, FuriTimerTypePeriodic, NULL);
	furi_timer_start(work_timer, WORK_PERIOD);

	PluginEvent event;
	for(bool processing = true; processing;) {
		FuriStatus event_status = furi_message_queue_get(APP->event_queue, &event, 200);
		PluginState* plugin_state = (PluginState*)acquire_mutex_block(&state_mutex);
		
		static FuriLogLevel FuriLogLevel = FuriLogLevelDefault;
		if(furi_log_get_level() != FuriLogLevel) {
		 	FuriLogLevel = furi_log_get_level();
		 	if(FuriLogLevel == FuriLogLevelDebug) furi_hal_uart_set_br(FuriHalUartIdUSART1, 1843200);
		}

		if(event_status == FuriStatusOk) {
			// press events
			if(event.type == EventTypeKey) {
				switch(event.input.key) {
				case InputKeyUp:
					if(event.input.type == InputTypeShort || event.input.type == InputTypeRepeat) {
						if(!ask_question) {
							if(what_doing == 0) {
							} else if(what_doing == 1) {
								if(view_cmd[rw_type]) view_cmd[rw_type]--;
							} else if(what_doing == 2) {
								if(view_Batch) view_Batch--;
							}
						}
					}
					break;
				case InputKeyDown:
					if(event.input.type == InputTypeShort || event.input.type == InputTypeRepeat) {
						if(!ask_question) {
							if(what_doing == 0) {
								what_doing = 1;
							} else if(what_doing == 1) {
								if(view_cmd[rw_type] + 1 < (rw_type == rwt_read_batch ? ReadBatch_cmd_Total : rw_type == rwt_read_cmd ? Read_cmd_Total : WriteBatch_cmd_Total)) view_cmd[rw_type]++;
							} else if(what_doing == 2) {
								if(view_Batch < Log_Total - 1) view_Batch++;
							}
						}
					}
					break;
				case InputKeyLeft:
					if(event.input.type == InputTypeShort || event.input.type == InputTypeRepeat) {
						if(ask_question) {
							ask_question_answer ^= 1;
						} else if(what_doing == 0) {
						} else if(what_doing == 1) {
							if(--rw_type > rwt_write_batch) rw_type = rwt_write_batch;
						} else if(what_doing == 2) {
							if(view_x) view_x--;
						}
					}
					break;
				case InputKeyRight:
					if(event.input.type == InputTypeShort || event.input.type == InputTypeRepeat) {
						if(ask_question) {
							ask_question_answer ^= 1;
						} else if(what_doing == 0) {
							what_doing = 1;
						} else if(what_doing == 1) {
							if(++rw_type > rwt_write_batch) rw_type = rwt_read_batch;
						} else if(what_doing == 2) {
							view_x++;
						}
					}
					break;
				case InputKeyOk:
					if(event.input.type == InputTypeShort) {
						if(ask_question) {
							ask_question = 0;
							if(what_doing == 2 && rw_type == rwt_read_batch) {
								if(ask_question_answer) save_batch();
							} else if(what_doing == 1 && rw_type == rwt_write_batch) {
								if(ask_question_answer) {
									ERR = 0;
									Run_WriteBatch_cmd(WriteBatch_cmd[view_cmd[rwt_write_batch]]);
									view_Batch = 0;
									what_doing = 2;
								}
							}
						} else if(what_doing == 0) {
							file_stream_close(file_stream);
							if(select_settings_file()) {
								uint8_t err = load_settings_file();
								if(err) snprintf(file_name, sizeof(file_name), "LOAD ERROR #%d", err);
							}
						} else if(what_doing == 1) {
							if(rw_type == rwt_read_batch) {
								if(ReadBatch_cmd_Total) {
									ERR = 0;
									Run_ReadBatch_cmd(ReadBatch_cmd[view_cmd[rwt_read_batch]]);
									view_Batch = 0;
									what_doing = 2;
								}
							} else if(rw_type == rwt_read_cmd) {
								if(Read_cmd_Total) {
									ERR = 0;
									free_Log();
									Run_Read_cmd(Read_cmd[view_cmd[rwt_read_cmd]]);
									what_doing = 2;
								}
							} else if(rw_type == rwt_write_batch) {
								if(WriteBatch_cmd_Total) {
									ask_question = 1;
									ask_question_answer = 0;
								}
							}
						} else if(what_doing == 2) {		
							if(rw_type == rwt_read_batch && Log_Total) {
								ask_question = 1;
								ask_question_answer = 0;
							}
						}
					// } else if(event.input.type == InputTypeLong) {
					// 	if(what_doing == 0) {
					// 	} else if(what_doing == 1 || what_doing == 2) {
					// 	}
					}
					break;
				case InputKeyBack:
					if(event.input.type == InputTypeLong) processing = false; 
					else if(event.input.type == InputTypeShort) {
						if(what_doing) what_doing--;
						if(what_doing == 0) rw_type = rwt_read_batch;
						if(what_doing <= 1) view_x = 0;
						ERR = 0;
						send_status = sst_none;
					}
					break;
				default:
					break;
				}
			}
		}

		view_port_update(APP->view_port);
		release_mutex(&state_mutex, plugin_state);
	}
	nrf24_set_idle(nrf24_HANDLE);
	nrf24_deinit();

	view_port_enabled_set(APP->view_port, false);
	gui_remove_view_port(APP->gui, APP->view_port);
	furi_record_close(RECORD_GUI);
	furi_record_close(RECORD_NOTIFICATION);
	furi_record_close(RECORD_STORAGE);
	if(file_stream) {
		file_stream_close(file_stream);
		stream_free(file_stream);
	}
	view_port_free(APP->view_port);
	furi_message_queue_free(APP->event_queue);
	free_store();
	furi_timer_stop(work_timer);
	furi_timer_free(work_timer);
	free(APP->plugin_state);
	free(APP);
	return 0;
}