marcel/lora_aprs_node_pico
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APRS settings can be saved in FLASH.

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This commit is contained in:
marcel
2022-05-11 18:35:02 +02:00
parent cc24f9d531
commit c67b9cde5e
11 changed files with 31356 additions and 28711 deletions
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50
src/Config.h
View File

@@ -18,23 +18,16 @@
#endif
#define OFF 0
#define ON 1
#define OFF 0
#define ON 1
#define CR 13
const long serialBaudRate = 38400;
const int rssiOffset = 292;
const int loraRxTurnaround = 50;
// Default LoRa settings
int loraSpreadingFactor = 12;
int loraPreamble = 8;
int loraCodingRate = 5;
int loraTxPower = 17;
int LoRaPaSelect = 1;
uint32_t loraBandwidth = 125E3;
uint32_t loraFrequency = 433775000;
uint8_t txBuffer[MTU];
uint8_t rxBuffer[MTU];
@@ -60,18 +53,31 @@
const uint8_t SIG_SYNCED = 0x02;
const uint8_t RX_ONGOING = 0x04;
// The size of this struc should be a exactly 256 bytes, which is the FLASH_PAGE_SIZE of the RPi pico's flash memory
// The size of this struc should be a exactly 256 bytes (or a multiple), which is the FLASH_PAGE_SIZE of the RPi pico's flash memory
// Struct can not be bigger than 4kbyte
struct aprssettings {
uint8_t ValidFlashData = 0x5A; // Indicates flash contains valid data - 1 bytes
uint8_t MyCall[10] = { 'N','O','C','A','L','L','-','2', 0} ; // 10 bytes
uint8_t ServerCall[10] = { 'N','O','C','A','L','L','-','1', 0} ; // 10 bytes
uint8_t Destination[10] = { 'A','P','Z','M','D','M', 0} ; // 10 bytes
uint8_t Path1[10] = { 0,'I','D','E','1','-', '1', 0} ; // 10 bytes
uint8_t Path2[10] = { 0,'I','D','E','2','-', '2', 0} ; // 10 bytes
uint8_t MyCall[10] = { 'P','E','1','R','X','F','-','5', 0, 0} ; // 10 bytes
uint8_t ServerCall[10] = { 'P','E','1','R','X','F','-','3', 0, 0} ; // 10 bytes
uint8_t Destination[10] = { 'A','P','Z','M','D','M', 0, 0, 0 ,0} ; // 10 bytes
uint8_t Path1[10] = { 0,'I','D','E','1','-', '1', 0, 0, 0} ; // 10 bytes
uint8_t Path2[10] = { 0,'I','D','E','2','-', '2', 0, 0 ,0} ; // 10 bytes
uint8_t FirmwareVersion[20] = { 'V','1',',','C','o','n','t','r', 'o','l','l','e','r',' ','0','1', 0} ; // 20 bytes
// 71 bytes total
uint8_t FillerData[256-71];
uint8_t FirmwareVersion[20] = { 'V','1',',','C','o','n','t','r', 'o','l','l','e','r',' ','0','1', 0, 0, 0, 0} ;
// 20 bytes
// Default LoRa settings
uint16_t loraSpreadingFactor = 12; // 2 bytes
uint16_t loraPreamble = 8; // 2 bytes
uint16_t loraCodingRate = 5; // 2 bytes
uint16_t loraTxPower = 17; // 2 bytes
uint16_t loraPaSelect = 1; // 2 bytes
uint32_t loraBandwidth = 125E3; // 4 bytes
uint32_t loraFrequency = 433775000; // 4 bytes
// Total 89 bytes
uint8_t FillerData[163];
} AprsSettings;
struct status {
@@ -81,6 +87,10 @@
bool ControlRelay;
uint8_t StatusString[6] = { '0','0','0','0','0',0};
uint8_t DescriptionString[20] ={ 'N','C',',','C','n','t','r',',','5','V',',','1','2','V',',','2','4','V',0,0};
uint8_t KissMode = OFF;
} Status;
#endif

337
src/main.cpp
View File

@@ -1,6 +1,7 @@
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <stdarg.h>
#include "pico/stdlib.h"
#include "pico/binary_info.h"
#include "hardware/flash.h"
@@ -34,36 +35,88 @@ const uint RelayOnControl = 3;
const uint8_t *flash_target_contents = (const uint8_t *) (XIP_BASE + FLASH_TARGET_OFFSET);
void log_out(const char *fmt, ...)
{
char buf[256];
va_list args;
if (Status.KissMode == OFF) {
va_start(args, fmt);
vsnprintf(buf, sizeof buf, fmt, args);
va_end( args);
printf("%s", buf);
}
}
/*
* Saves settings in struct AprsSettings to FLASH memory
* Struct AprsSettings should be exactly a multiple of FLASH_PAGE_SIZE in size.
*
* Returns: 0 when successfull
* 1 when error
*/
uint8_t SaveSettingsToFlash(void)
{
uint32_t ints = save_and_disable_interrupts();
// First we erase the FLASH sector we need. After that we can store new values.
// Note that a whole number of sectors must be erased at a time.
// Sector size is 4kB, so this is way bigger than the 256 bytes PAGE_SIZE for storing the settings.
// We can therefore store up to 16 blocks of 256 bytes per sector
log_out("Erasing FLASH region...");
flash_range_erase(FLASH_TARGET_OFFSET, FLASH_SECTOR_SIZE);
log_out("done\n");
log_out("Writing settings to FLASH...");
flash_range_program(FLASH_TARGET_OFFSET, (uint8_t*)&AprsSettings, sizeof(AprsSettings) );
log_out("done\n");
restore_interrupts (ints);
return(0);
}
void ShowSettings(void)
{
log_out("LoRa APRS remote switcher with build in KISS TNC.\n");
log_out(" Firmware version : %s\n",AprsSettings.FirmwareVersion);
log_out(" Size of struct : %u.\n\n", sizeof(AprsSettings));
log_out("APRS settings\n");
log_out(" My call : %s\n", AprsSettings.MyCall);
log_out(" Server call : %s\n", AprsSettings.ServerCall);
log_out(" Destination : %s\n", AprsSettings.Destination);
log_out(" Path 1 : %s\n", AprsSettings.Path1);
log_out(" Path 2 : %s\n\n", AprsSettings.Path2);
log_out("LoRa settings\n");
log_out(" Frequency : %u\n", AprsSettings.loraFrequency);
log_out(" SpreadingFactor : %i\n", AprsSettings.loraSpreadingFactor);
log_out(" Preamble : %i\n", AprsSettings.loraPreamble);
log_out(" CodingRate : %i\n", AprsSettings.loraCodingRate);
log_out(" TxPower : %i\n", AprsSettings.loraTxPower);
log_out(" PaSelect : %i\n", AprsSettings.loraPaSelect);
log_out(" Bandwidth : %u\n", AprsSettings.loraBandwidth);
}
uint8_t ReadSettingsFromFlash(void)
{
// If byte zero of flash contains 0x5A we assume the data to be valid, otherwise we fill the flash with default values.
if (flash_target_contents[0] != 0x5A)
{
printf( "No valid data found in FLASH memory.\n" );
log_out( "No valid data found in FLASH memory. Using default values.\n" );
memset(AprsSettings.FillerData, 0, sizeof(AprsSettings.FillerData));
uint32_t ints = save_and_disable_interrupts();
SaveSettingsToFlash();
// First we erase the FLASH sector we need. After that we can store new values.
// Note that a whole number of sectors must be erased at a time.
// Sector size is 4kB, so this is way bigger than the needed 256 bytes for storing the settings.
printf("Erasing FLASH region...");
flash_range_erase(FLASH_TARGET_OFFSET, FLASH_SECTOR_SIZE);
printf("done\n");
printf("Writing default values to FLASH...");
flash_range_program(FLASH_TARGET_OFFSET, (uint8_t*)&AprsSettings, FLASH_PAGE_SIZE);
printf("done\n");
restore_interrupts (ints);
} else {
// Read settings stored in flash memory
printf("Found valid settings in FLASH memory.\n");
log_out("Found valid settings in FLASH memory.\n");
}
memcpy((uint8_t*)&AprsSettings, flash_target_contents, FLASH_PAGE_SIZE);
printf("APRS settings:\n");
printf("My call: %s\n", AprsSettings.MyCall);
printf("Server call: %s\n", AprsSettings.ServerCall);
printf("Firmware: %s\n",AprsSettings.FirmwareVersion);
memcpy((uint8_t*)&AprsSettings, flash_target_contents, sizeof(AprsSettings));
ShowSettings();
}
void setup(void)
@@ -107,6 +160,191 @@ void setup(void)
startRadio();
}
void print_help(void)
{
log_out("Unknown command.\n\n");
log_out("kiss\n");
log_out(" Enter KISS mode.\n");
log_out("save\n");
log_out(" Save settings to flash.\n");
log_out("read <flash/ram>\n");
log_out(" Read settings from FLASH or RAM.\n");
log_out("mycall/servercall/destination/path1/path2\n");
log_out(" APRS settings.\n");
log_out("freq/spread/pre/rate/power/pa/band.\n");
log_out(" LoRa settings.\n");
}
void ProcessSerialInput(char string[])
{
uint8_t cnt;
uint8_t position=0;
char command[100];
char parameter[100];
//log_out("You wrote - %s (%u).\n", string, strlen(string));
// Command cannot be any shorter than 3 characters
if (strlen(string) > 2) {
// Extract command (part before space)
cnt = 0;
while( string[position] != 0 )
{
command[cnt++] = string[position];
if ( string[position] == ' ' ) {
command[cnt-1] = 0; // terminate command string
position++;
break;
}
position++;
}
// Extract parameter (part after space)
cnt = 0;
while( string[position] != 0 )
{
parameter[cnt++] = string[position++];
}
parameter[cnt] = 0; //terminate string
//log_out("Command - %s.\n", command);
//log_out("Parameter - %s.\n", parameter);
// Read settings
if (strcmp(command, "read") == 0) {
if (strcmp(parameter, "flash") == 0) {
ReadSettingsFromFlash();
}
else if (strcmp(parameter, "ram") == 0) {
ShowSettings();
}
}
// Save settings to FLASH
else if (strcmp(command, "save") == 0)
SaveSettingsToFlash();
// Enter KISS mode
else if (strcmp(command, "kiss") == 0) {
log_out("Entering KISS mode.\n");
log_out("You can exit KISS mode via KISS command <0xC0 0xFF 0xC0>\n");
Status.KissMode = ON;
}
// Set mycall (cannot be longer than 9 characters)
else if (strcmp(command, "mycall") == 0) {
if (sizeof(AprsSettings.MyCall) > strlen(parameter)) {
position = 0;
while( parameter[position] != 0 )
{
AprsSettings.MyCall[position] = parameter[position];
position++;
}
AprsSettings.MyCall[position] = 0;
log_out("MyCall set to %s.\n", AprsSettings.MyCall);
}
}
// Set servercall (cannot be longer than 9 characters)
else if (strcmp(command, "servercall") == 0) {
if (sizeof(AprsSettings.ServerCall) > strlen(parameter)) {
position = 0;
while( parameter[position] != 0 )
{
AprsSettings.ServerCall[position] = parameter[position];
position++;
}
AprsSettings.ServerCall[position] = 0;
log_out("ServerCall set to %s.\n", AprsSettings.ServerCall);
}
}
// Set path 1 (cannot be longer than 9 characters)
else if (strcmp(command, "path1") == 0) {
// Set path to nothing
if (parameter[0] == '0') {
AprsSettings.Path1[0] = 0;
log_out("Path1 cleared.\n");
}
else if (sizeof(AprsSettings.Path1) > strlen(parameter)) {
position = 0;
while( parameter[position] != 0 )
{
AprsSettings.Path1[position] = parameter[position];
position++;
}
AprsSettings.Path1[position] = 0;
log_out("Path1 set to %s.\n", AprsSettings.Path1);
}
}
// Set path 2 (cannot be longer than 9 characters)
else if (strcmp(command, "path2") == 0) {
// Set path to nothing
if (parameter[0] == '0') {
AprsSettings.Path2[0] = 0;
log_out("Path2 cleared.\n");
}
else if (sizeof(AprsSettings.Path2) > strlen(parameter)) {
position = 0;
while( parameter[position] != 0 )
{
AprsSettings.Path2[position] = parameter[position];
position++;
}
AprsSettings.Path2[position] = 0;
log_out("Path2 set to %s.\n", AprsSettings.Path2);
}
}
// Set destination (cannot be longer than 9 characters)
else if (strcmp(command, "dest") == 0) {
if (sizeof(AprsSettings.Destination) > strlen(parameter)) {
position = 0;
while( parameter[position] != 0 )
{
AprsSettings.Destination[position] = parameter[position];
position++;
}
AprsSettings.Destination[position] = 0;
log_out("Destination set to %s.\n", AprsSettings.Destination);
}
}
else {
print_help();
}
}
else
{
print_help();
}
}
void ReadUSBSerial(void)
{
static char strg[100];
int chr;
static int lp = 0;
// Read serial port (USB) - non-blocking!
chr = getchar_timeout_us(0);
while(chr != PICO_ERROR_TIMEOUT)
{
log_out("%c", chr);
strg[lp++] = chr;
if(chr == CR || lp == (sizeof(strg) - 1))
{
strg[lp-1] = 0; //terminate string by overwriting <CR> with NULL
//log_out("You wrote - %s\n", strg);
lp = 0; //reset string buffer pointer
ProcessSerialInput(strg);
break;
}
chr = getchar_timeout_us(0);
}
}
int main() {
uint16_t ServerCommand = 0;
@@ -118,7 +356,7 @@ int main() {
int packetSize = LoRa.parsePacket();
if (packetSize) {
// received a packet
printf("Received packet (RSSI = %idBm)\n",LoRa.packetRssi());
log_out("Received packet (RSSI = %idBm)\n",LoRa.packetRssi());
getPacketData(packetSize);
@@ -129,10 +367,10 @@ int main() {
rxBuffer[cnt-3] = rxBuffer[cnt];
}
rxBuffer[packetSize-3] = 0;
printf("%s\n", rxBuffer);
log_out("%s\n", rxBuffer);
ServerCommand = decode_packet();
} else {
printf("ERROR: No or corrupted APRS frame.\n");
log_out("ERROR: No or corrupted APRS frame.\n");
}
}
@@ -169,6 +407,10 @@ int main() {
break;
// Send description digital outputs
case 7 :
ComposeAprsFrame(Status.DescriptionString);
// Switch off 24V power supply
case 30 :
gpio_put(PowerSupply24VControl, 0);
@@ -235,6 +477,9 @@ int main() {
TransmitRequest = false;
}
}
// Read serial input and process it
ReadUSBSerial();
}
return 0;
@@ -247,29 +492,19 @@ bool startRadio()
{
// override the default CS, reset, and IRQ pins (optional)
// LoRa.setPins(7, 6, 1); // set CS, reset, IRQ pin
printf("LoRa settings:\n");
printf("loraFrequency = %u\n", loraFrequency);
printf("loraSpreadingFactor = %i\n", loraSpreadingFactor);
printf("loraPreamble = %i\n", loraPreamble);
printf("loraCodingRate = %i\n", loraCodingRate);
printf("loraTxPower = %i\n", loraTxPower);
printf("LoRaPaSelect = %i\n", LoRaPaSelect);
printf("loraBandwidth = %u\n", loraBandwidth);
printf("Starting LoRa radio");
if (!LoRa.begin(loraFrequency)) {
printf(" [ FAILED ]\n");
log_out("Starting LoRa radio");
if (!LoRa.begin(AprsSettings.loraFrequency)) {
log_out(" [ FAILED ]\n");
while(1);
}
else {
LoRa.setPreambleLength(loraPreamble);
LoRa.setSignalBandwidth(loraBandwidth);
LoRa.setTxPower(loraTxPower,LoRaPaSelect);
LoRa.setSpreadingFactor(loraSpreadingFactor);
LoRa.setCodingRate4(loraCodingRate);
LoRa.setPreambleLength(AprsSettings.loraPreamble);
LoRa.setSignalBandwidth(AprsSettings.loraBandwidth);
LoRa.setTxPower(AprsSettings.loraTxPower,AprsSettings.loraPaSelect);
LoRa.setSpreadingFactor(AprsSettings.loraSpreadingFactor);
LoRa.setCodingRate4(AprsSettings.loraCodingRate);
LoRa.enableCrc();
printf(" [ DONE ]\n");
log_out(" [ DONE ]\n");
}
}
@@ -318,13 +553,12 @@ uint16_t decode_packet ()
if ( rxBuffer[position] == '>' && position < 10 ) {
aprs_source_address[cnt-1] = 0;
valid_apsr_data = true;
position++;
break;
}
position++;
}
position++;
if (valid_apsr_data == true)
{
// Extract digi path
@@ -336,6 +570,7 @@ uint16_t decode_packet ()
if ( rxBuffer[position] == ':' ) {
aprs_digi_path[cnt-1] = 0;
valid_apsr_data = true;
position++;
break;
}
position++;
@@ -343,8 +578,6 @@ uint16_t decode_packet ()
}
position++;
if (valid_apsr_data == true)
{
// Extract data field
@@ -372,8 +605,6 @@ uint16_t decode_packet ()
valid_apsr_data = false;
break;
}
//position++;
cnt = 0;
}
position++;
@@ -424,20 +655,20 @@ uint16_t decode_packet ()
}
printf("Source address: %s\nDigipeaters (%u): %s %s %s %s\nData: %s\n", aprs_source_address, number_of_digipeaters+1, aprs_digis[0], aprs_digis[1], aprs_digis[2], aprs_digis[3], aprs_data_field);
log_out("Source address: %s\nDigipeaters (%u): %s %s %s %s\nData: %s\n", aprs_source_address, number_of_digipeaters+1, aprs_digis[0], aprs_digis[1], aprs_digis[2], aprs_digis[3], aprs_data_field);
if (aprs_message[0])
{
printf("Message from server: %s (command %u)\n", aprs_message, aprs_server_command);
log_out("Message from server: %s (command %u)\n", aprs_message, aprs_server_command);
if (aprs_acknowledge_request) {
ComposeAprsFrame(aprs_acknowledge_number);
printf("Acknowledge request: %s\n", aprs_acknowledge_number);
log_out("Acknowledge request: %s\n", aprs_acknowledge_number);
}
}
}
else
printf("Error decoding APRS frame.");
log_out("Error decoding APRS frame.");
return (aprs_server_command);
}
@@ -570,7 +801,7 @@ void ComposeAprsFrame(uint8_t payload[])
// Set variable to indicate a send request
TransmitRequest = true;
printf("%s\n", txBuffer);
log_out("%s\n", txBuffer);
}
void transmit() {