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EEPROM validation and config util compat

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This commit is contained in:
Mark Qvist 2018-06-20 08:45:11 +02:00
parent 4d943999d5
commit 637a44ad70
5 changed files with 256 additions and 55 deletions
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20
Config.h
View File

@ -1,13 +1,14 @@
#include "ROM.h"
#ifndef CONFIG_H
#define CONFIG_H
#define MAJ_VERS 0x01
#define MIN_VERS 0x03
#define MCU_328P 0x90
#define MCU_1284P 0x91
#define PRODUCT_RNODE 0x03
#define MODEL_A4 0xA4
#define MODEL_A9 0xA9
#if defined(__AVR_ATmega328P__)
#define MCU_VARIANT MCU_328P
#warning "Firmware is being compiled for atmega328p based boards"
@ -33,6 +34,9 @@
#define FLOW_CONTROL_ENABLED true
#define QUEUE_SIZE 0
#define EEPROM_SIZE 512
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#endif
#if MCU_VARIANT == MCU_1284P
@ -44,8 +48,13 @@
#define FLOW_CONTROL_ENABLED true
#define QUEUE_SIZE 24
#define EEPROM_SIZE 4096
#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
#endif
#define eeprom_addr(a) (a+EEPROM_OFFSET)
// MCU independent configuration parameters
const long serial_baudrate = 115200;
const int rssi_offset = 164;
@ -62,6 +71,9 @@
// Operational variables
bool radio_locked = true;
bool radio_online = false;
bool hw_ready = false;
uint8_t model = 0x00;
uint8_t hwrev = 0x00;
int last_rssi = -164;
size_t read_len = 0;

36
EEPROM.cpp
View File

@ -1,36 +0,0 @@
#include <Arduino.h>
#include <EEPROM.h>
#include "Config.h"
#include "Framing.h"
#define ADDR_PRODUCT 0x00
#define ADDR_MODEL 0x01
#define ADDR_HW_REV 0x02
#define ADDR_SERIAL 0x03
#define ADDR_MADE 0x06
#define ADDR_CHKSUM 0x0A
#define ADDR_SIGNATURE 0x1A
#define ADDR_INFO_LOCK 0x9A
#define INFO_LOCK_BYTE 0x73
#define ADDR_CONF_SF 0x74
#define ADDR_CONF_CR 0x75
#define ADDR_CONF_TXP 0x76
#define ADDR_CONF_BW 0x77
#define ADDR_CONF_FREQ 0x7B
#define ADDR_CONF_OK 0x7F
#define CONF_OK_BYTE 0x73
void eeprom_dump_info() {
for (int addr = ADDR_PRODUCT; addr <= ADDR_INFO_LOCK; addr++) {
uint8_t rom_byte = EEPROM.read(addr);
Serial.write(rom_byte);
}
}
void eeprom_dump_config() {
for (int addr = ADDR_CONF_SF; addr <= ADDR_CONF_OK; addr++) {
uint8_t rom_byte = EEPROM.read(addr);
Serial.write(rom_byte);
}
}

30
Framing.h
View File

@ -12,8 +12,10 @@
#define CMD_BANDWIDTH 0x02
#define CMD_TXPOWER 0x03
#define CMD_SF 0x04
#define CMD_RADIO_STATE 0x05
#define CMD_RADIO_LOCK 0x06
#define CMD_CR 0x05
#define CMD_RADIO_STATE 0x06
#define CMD_RADIO_LOCK 0x07
#define CMD_DETECT 0x08
#define CMD_READY 0x0F
#define CMD_STAT_RX 0x21
@ -22,23 +24,29 @@
#define CMD_BLINK 0x30
#define CMD_RANDOM 0x40
#define CMD_INFO_READ 0x50
#define CMD_INFO_WRITE 0x51
#define CMD_CONF_READ 0x52
#define CMD_CONF_WRITE 0x53
#define CMD_FW_VERSION 0x50
#define CMD_ROM_READ 0x51
#define CMD_ROM_WRITE 0x52
#define CMD_CONF_SAVE 0x53
#define CMD_UNLOCK_ROM 0x59
#define ROM_UNLOCK_BYTE 0xF8
#define DETECT_REQ 0x73
#define DETECT_RESP 0x46
#define RADIO_STATE_OFF 0x00
#define RADIO_STATE_ON 0x01
#define CMD_ERROR 0x90
#define ERROR_INITRADIO 0x01
#define ERROR_TXFAILED 0x02
#define NIBBLE_SEQ 0xF0
#define NIBBLE_FLAGS 0x0F
#define FLAG_SPLIT 0x01
#define SEQ_UNSET 0xFF
#define CMD_ERROR 0x90
#define ERROR_INITRADIO 0x01
#define ERROR_TXFAILED 0x02
#define ERROR_EEPROM_LOCKED 0x03
// Serial framing variables
size_t frame_len;
bool IN_FRAME = false;
@ -57,7 +65,7 @@ All: 0xc00119d21b80c00200005140c00308c00407c0
Radio on 0xc00501c0
Config+on 0xc00119d21b80c00200005140c00308c00407c00501c0
Config+on 0xc00119d21b80c00200005140c00301c00407c00601c0
c1 = self.bandwidth >> 24

64
RNode_Firmware.ino
View File

@ -2,7 +2,6 @@
#include <LoRa.h>
#include "Config.h"
#include "Framing.h"
#include "EEPROM.cpp"
#include "Utilities.cpp"
void setup() {
@ -25,12 +24,15 @@ void setup() {
// Set chip select, reset and interrupt
// pins for the LoRa module
LoRa.setPins(pin_cs, pin_reset, pin_dio);
// Validate board health, EEPROM and config
validateStatus();
}
bool startRadio() {
update_radio_lock();
if (!radio_online) {
if (!radio_locked) {
if (!radio_locked && hw_ready) {
if (!LoRa.begin(lora_freq)) {
// The radio could not be started.
// Indicate this failure over both the
@ -280,6 +282,18 @@ void serialCallback(uint8_t sbyte) {
setSpreadingFactor();
kiss_indicate_spreadingfactor();
}
} else if (command == CMD_CR) {
if (sbyte == 0xFF) {
kiss_indicate_codingrate();
} else {
int cr = sbyte;
if (cr < 5) cr = 5;
if (cr > 8) cr = 8;
lora_cr = cr;
setCodingRate();
kiss_indicate_codingrate();
}
} else if (command == CMD_RADIO_STATE) {
if (sbyte == 0xFF) {
kiss_indicate_radiostate();
@ -303,6 +317,33 @@ void serialCallback(uint8_t sbyte) {
led_indicate_info(sbyte);
} else if (command == CMD_RANDOM) {
kiss_indicate_random(getRandom());
} else if (command == CMD_DETECT) {
if (sbyte == DETECT_REQ) {
kiss_indicate_detect();
}
} else if (command == CMD_UNLOCK_ROM) {
if (sbyte == ROM_UNLOCK_BYTE) {
unlock_rom();
}
} else if (command == CMD_ROM_READ) {
kiss_dump_eeprom();
} else if (command == CMD_ROM_WRITE) {
if (sbyte == FESC) {
ESCAPE = true;
} else {
if (ESCAPE) {
if (sbyte == TFEND) sbyte = FEND;
if (sbyte == TFESC) sbyte = FESC;
ESCAPE = false;
}
cbuf[frame_len++] = sbyte;
}
if (frame_len == 2) {
eeprom_write(cbuf[0], cbuf[1]);
}
} else if (command == CMD_FW_VERSION) {
kiss_indicate_version();
}
}
}
@ -344,6 +385,20 @@ void checkModemStatus() {
}
}
void validateStatus() {
if (eeprom_lock_set()) {
if (eeprom_product_valid() && eeprom_model_valid() && eeprom_hwrev_valid()) {
if (eeprom_checksum_valid()) {
hw_ready = true;
}
} else {
hw_ready = false;
}
} else {
hw_ready = false;
}
}
void loop() {
if (radio_online) {
checkModemStatus();
@ -362,7 +417,12 @@ void loop() {
}
}
} else {
if (hw_ready) {
led_indicate_standby();
} else {
led_indicate_not_ready();
stopRadio();
}
}
if (Serial.available()) {

159
Utilities.cpp
View File

@ -1,7 +1,10 @@
#include <Arduino.h>
#include <EEPROM.h>
#include <LoRa.h>
#include "ROM.h"
#include "Config.h"
#include "Framing.h"
#include "MD5.h"
void led_rx_on() { digitalWrite(pin_led_rx, HIGH); }
void led_rx_off() { digitalWrite(pin_led_rx, LOW); }
@ -68,6 +71,22 @@ void led_indicate_standby() {
}
led_standby_value += led_standby_direction;
analogWrite(pin_led_rx, led_standby_value);
digitalWrite(pin_led_tx, 0);
}
}
void led_indicate_not_ready() {
led_standby_ticks++;
if (led_standby_ticks > led_standby_wait) {
led_standby_ticks = 0;
if (led_standby_value <= led_standby_min) {
led_standby_direction = 1;
} else if (led_standby_value >= led_standby_max) {
led_standby_direction = -1;
}
led_standby_value += led_standby_direction;
analogWrite(pin_led_tx, led_standby_value);
digitalWrite(pin_led_rx, 0);
}
}
@ -132,6 +151,13 @@ void kiss_indicate_spreadingfactor() {
Serial.write(FEND);
}
void kiss_indicate_codingrate() {
Serial.write(FEND);
Serial.write(CMD_CR);
Serial.write((uint8_t)lora_cr);
Serial.write(FEND);
}
void kiss_indicate_txpower() {
Serial.write(FEND);
Serial.write(CMD_TXPOWER);
@ -173,6 +199,21 @@ void kiss_indicate_ready() {
Serial.write(FEND);
}
void kiss_indicate_detect() {
Serial.write(FEND);
Serial.write(CMD_DETECT);
Serial.write(DETECT_RESP);
Serial.write(FEND);
}
void kiss_indicate_version() {
Serial.write(FEND);
Serial.write(CMD_FW_VERSION);
Serial.write(MAJ_VERS);
Serial.write(MIN_VERS);
Serial.write(FEND);
}
bool isSplitPacket(uint8_t header) {
return (header & FLAG_SPLIT);
}
@ -197,7 +238,10 @@ void setCodingRate() {
}
void setTXPower() {
if (radio_online) LoRa.setTxPower(lora_txp);
if (radio_online) {
if (model == MODEL_A4) LoRa.setTxPower(lora_txp, PA_OUTPUT_RFO_PIN);
if (model == MODEL_A9) LoRa.setTxPower(lora_txp, PA_OUTPUT_PA_BOOST_PIN);
}
}
@ -235,3 +279,116 @@ uint8_t getRandom() {
}
}
bool eeprom_info_locked() {
uint8_t lock_byte = EEPROM.read(eeprom_addr(ADDR_INFO_LOCK));
if (lock_byte == INFO_LOCK_BYTE) {
return true;
} else {
return false;
}
}
void eeprom_dump_info() {
for (int addr = ADDR_PRODUCT; addr <= ADDR_INFO_LOCK; addr++) {
uint8_t byte = EEPROM.read(eeprom_addr(addr));
escapedSerialWrite(byte);
}
}
void eeprom_dump_config() {
for (int addr = ADDR_CONF_SF; addr <= ADDR_CONF_OK; addr++) {
uint8_t byte = EEPROM.read(eeprom_addr(addr));
escapedSerialWrite(byte);
}
}
void eeprom_dump_all() {
for (int addr = 0; addr < EEPROM_RESERVED; addr++) {
uint8_t byte = EEPROM.read(eeprom_addr(addr));
escapedSerialWrite(byte);
}
}
void kiss_dump_eeprom() {
Serial.write(FEND);
Serial.write(CMD_ROM_READ);
eeprom_dump_all();
Serial.write(FEND);
}
void eeprom_write(uint8_t addr, uint8_t byte) {
if (!eeprom_info_locked() && addr >= 0 && addr < EEPROM_RESERVED) {
EEPROM.update(eeprom_addr(addr), byte);
} else {
kiss_indicate_error(ERROR_EEPROM_LOCKED);
}
}
void eeprom_erase() {
for (int addr = 0; addr < EEPROM_RESERVED; addr++) {
EEPROM.update(eeprom_addr(addr), 0xFF);
}
while (true) { led_tx_on(); led_rx_off(); }
}
bool eeprom_lock_set() {
if (EEPROM.read(eeprom_addr(ADDR_INFO_LOCK)) == INFO_LOCK_BYTE) {
return true;
} else {
return false;
}
}
bool eeprom_product_valid() {
if (EEPROM.read(eeprom_addr(ADDR_PRODUCT)) == PRODUCT_RNODE) {
return true;
} else {
return false;
}
}
bool eeprom_model_valid() {
model = EEPROM.read(eeprom_addr(ADDR_MODEL));
if (model == MODEL_A4 || model == MODEL_A9) {
return true;
} else {
return false;
}
}
bool eeprom_hwrev_valid() {
hwrev = EEPROM.read(eeprom_addr(ADDR_HW_REV));
if (hwrev != 0x00 && hwrev != 0xFF) {
return true;
} else {
return false;
}
}
bool eeprom_checksum_valid() {
char *data = (char*)malloc(CHECKSUMMED_SIZE);
for (uint8_t i = 0; i < CHECKSUMMED_SIZE; i++) {
char byte = EEPROM.read(eeprom_addr(i));
data[i] = byte;
}
unsigned char *hash = MD5::make_hash(data, CHECKSUMMED_SIZE);
bool checksum_valid = true;
for (uint8_t i = 0; i < 16; i++) {
uint8_t stored_chk_byte = EEPROM.read(eeprom_addr(ADDR_CHKSUM+i));
uint8_t calced_chk_byte = (uint8_t)hash[i];
if (stored_chk_byte != calced_chk_byte) {
checksum_valid = false;
}
}
free(hash);
free(data);
return checksum_valid;
}
void unlock_rom() {
led_indicate_error(50);
eeprom_erase();
}