mirror of
https://github.com/markqvist/OpenModem.git
synced 2024-10-01 03:15:46 -04:00
325 lines
9.1 KiB
C
325 lines
9.1 KiB
C
#include <util/atomic.h>
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#include <avr/io.h>
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#include <avr/eeprom.h>
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#include <avr/wdt.h>
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#include <string.h>
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#include "Config.h"
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#include "device.h"
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#include "hardware/crypto/MD5.h"
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#include "hardware/AFSK.h"
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#include "hardware/Serial.h"
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#include "hardware/VREF.h"
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#include "protocol/KISS.h"
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void config_init(void) {
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config_source = CONFIG_SOURCE_NONE;
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config_output_diagnostics = false;
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bool has_valid_eeprom_config = config_validate_eeprom();
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if (has_valid_eeprom_config) {
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config_load_from_eeprom();
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} else {
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config_load_defaults();
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config_save_to_eeprom();
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}
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config_init_ephemeral();
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config_apply();
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}
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void config_init_ephemeral(void) {
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config_gps_nmea_output = CONFIG_GPS_NMEA_NONE;
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}
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void config_apply(void) {
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if (config_serial_baudrate == CONFIG_BAUDRATE_1200) serial_setbaudrate_1200(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_2400) serial_setbaudrate_2400(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_4800) serial_setbaudrate_4800(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_9600) serial_setbaudrate_9600(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_14400) serial_setbaudrate_14400(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_19200) serial_setbaudrate_19200(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_28800) serial_setbaudrate_28800(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_38400) serial_setbaudrate_38400(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_57600) serial_setbaudrate_57600(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_76800) serial_setbaudrate_76800(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_115200) serial_setbaudrate_115200(0);
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if (config_serial_baudrate == CONFIG_BAUDRATE_230400) serial_setbaudrate_230400(0);
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}
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void config_save(void) {
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config_save_to_eeprom();
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config_save_to_sd();
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}
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void config_wipe_eeprom(void) {
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for (uint16_t i = 0; i < ADDR_E_END; i++) {
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EEPROM_updatebyte(i, 0x00);
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}
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}
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bool config_validate_eeprom(void) {
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uint8_t config_size = ADDR_E_END;
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uint8_t config_data_size = ADDR_E_END - CONF_CHECKSUM_SIZE;
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uint8_t config_data[config_data_size];
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uint8_t config_checksum[CONF_CHECKSUM_SIZE];
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for (uint16_t addr = 0; addr < config_data_size; addr++) {
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config_data[addr] = EEPROM_readbyte(addr);
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}
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for (uint16_t addr = config_data_size; addr < config_size; addr++) {
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config_checksum[addr-config_data_size] = EEPROM_readbyte(addr);
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}
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md5_hash_t calculated_checksum;
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md5(&calculated_checksum, &config_data, config_data_size*8);
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bool checksums_match = true;
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for (uint8_t i = 0; i < CONF_CHECKSUM_SIZE; i++) {
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if (calculated_checksum[i] != config_checksum[i]) {
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checksums_match = false;
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break;
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}
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}
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if (checksums_match) {
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return true;
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} else {
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return false;
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}
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}
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void config_save_to_eeprom(void) {
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uint8_t i = 0;
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uint8_t config_size = ADDR_E_END;
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uint8_t config_data_size = ADDR_E_END - CONF_CHECKSUM_SIZE;
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uint8_t config_data[config_size];
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memset(config_data, 0x00, ADDR_E_END);
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config_data[i++] = MAJ_VERSION;
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config_data[i++] = MIN_VERSION;
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config_data[i++] = CONF_VERSION;
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config_data[i++] = config_p;
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config_data[i++] = config_slottime/10;
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config_data[i++] = config_preamble/10;
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config_data[i++] = config_tail/10;
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config_data[i++] = config_led_intensity;
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config_data[i++] = config_output_gain;
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config_data[i++] = config_input_gain;
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config_data[i++] = config_passall;
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config_data[i++] = config_log_packets;
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config_data[i++] = config_crypto_lock;
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config_data[i++] = config_gps_mode;
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config_data[i++] = config_bluetooth_mode;
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config_data[i++] = config_serial_baudrate;
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md5_hash_t checksum;
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md5(&checksum, &config_data, config_data_size*8);
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for (uint8_t j = 0; j < CONF_CHECKSUM_SIZE; j++) {
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config_data[i++] = checksum[j];
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}
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for (uint16_t addr = 0; addr < config_size; addr++) {
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EEPROM_updatebyte(addr, config_data[addr]);
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}
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}
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void config_load_defaults(void) {
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config_p = CONFIG_CSMA_P_DEFAULT;
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config_slottime = CONFIG_CSMA_SLOTTIME_DEFAULT;
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config_preamble = CONFIG_AFSK_PREAMBLE_LEN;
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config_tail = CONFIG_AFSK_TRAILER_LEN;
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config_led_intensity = CONFIG_LED_INTENSITY;
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config_output_gain = CONFIG_DAC_REF;
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config_input_gain = CONFIG_ADC_REF;
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config_passall = false;
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config_log_packets = false;
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config_crypto_lock = false;
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config_gps_mode = CONFIG_GPS_AUTODETECT;
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config_bluetooth_mode = CONFIG_BLUETOOTH_AUTODETECT;
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config_serial_baudrate = CONFIG_BAUDRATE_115200;
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config_source = CONFIG_SOURCE_DEFAULT;
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}
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void config_load_from_eeprom(void) {
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uint8_t config_data_size = ADDR_E_END - CONF_CHECKSUM_SIZE;
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uint8_t config_data[config_data_size];
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for (uint16_t addr = 0; addr < config_data_size; addr++) {
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config_data[addr] = EEPROM_readbyte(addr);
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}
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config_p = config_data[ADDR_E_P];
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config_slottime = config_data[ADDR_E_SLOTTIME]*10UL;
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config_preamble = config_data[ADDR_E_PREAMBLE]*10UL;
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config_tail = config_data[ADDR_E_TAIL]*10UL;
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config_led_intensity = config_data[ADDR_E_LED_INTENSITY];
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config_output_gain = config_data[ADDR_E_OUTPUT_GAIN];
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config_input_gain = config_data[ADDR_E_INPUT_GAIN];
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config_passall = config_data[ADDR_E_PASSALL];
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config_log_packets = config_data[ADDR_E_LOG_PACKETS];
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config_crypto_lock = config_data[ADDR_E_CRYPTO_LOCK];
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config_gps_mode = config_data[ADDR_E_GPS_MODE];
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config_bluetooth_mode = config_data[ADDR_E_BLUETOOTH_MODE];
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config_serial_baudrate = config_data[ADDR_E_SERIAL_BAUDRATE];
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}
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bool config_validate_sd(void) {
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// TODO: Implement
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return false;
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}
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void config_save_to_sd(void) {
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// TODO: Implement
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}
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void config_load_from_sd(void) {
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// TODO: Implement
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return;
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}
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void config_crypto_lock_enable(void) {
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config_crypto_lock = true;
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config_save_to_eeprom();
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}
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void config_crypto_lock_disable(void) {
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config_crypto_lock = false;
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config_soft_reboot();
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}
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void config_set_serial_baudrate(uint8_t baudrate) {
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if (baudrate >= CONFIG_BAUDRATE_1200 && baudrate <= CONFIG_BAUDRATE_230400) {
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config_serial_baudrate = baudrate;
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}
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}
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void config_set_output_gain(uint8_t gain) {
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vref_setDAC(gain);
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}
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void config_set_input_gain(uint8_t gain) {
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vref_setADC(gain);
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}
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void config_set_passall(uint8_t passall) {
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if (passall == 0x00) {
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config_passall = false;
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} else {
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config_passall = true;
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}
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}
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void config_set_log_packets(uint8_t log_packets) {
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if (log_packets == 0x00) {
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config_log_packets = false;
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} else {
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config_log_packets = true;
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}
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}
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void config_set_gps_mode(uint8_t mode) {
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if (mode == CONFIG_GPS_OFF) config_gps_mode = CONFIG_GPS_OFF;
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if (mode == CONFIG_GPS_AUTODETECT) config_gps_mode = CONFIG_GPS_AUTODETECT;
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if (mode == CONFIG_GPS_REQUIRED) config_gps_mode = CONFIG_GPS_REQUIRED;
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}
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void config_set_nmea_output(uint8_t nmea_output) {
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if (nmea_output == CONFIG_GPS_NMEA_NONE) config_gps_nmea_output = nmea_output;
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if (nmea_output == CONFIG_GPS_NMEA_RAW) config_gps_nmea_output = nmea_output;
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if (nmea_output == CONFIG_GPS_NMEA_ENCAP) config_gps_nmea_output = nmea_output;
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}
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void config_set_bt_mode(uint8_t mode) {
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if (mode == CONFIG_BLUETOOTH_OFF) config_bluetooth_mode = CONFIG_BLUETOOTH_OFF;
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if (mode == CONFIG_BLUETOOTH_AUTODETECT) config_bluetooth_mode = CONFIG_BLUETOOTH_AUTODETECT;
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if (mode == CONFIG_BLUETOOTH_REQUIRED) config_bluetooth_mode = CONFIG_BLUETOOTH_REQUIRED;
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}
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void EEPROM_writebyte(uint16_t addr, uint8_t data) {
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// Disable interrupts
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cli();
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// Wait for EEPROM ready
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while(EECR & (1<<EEPE));
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// Set up address and data registers
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EEAR = addr;
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EEDR = data;
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// Set EEPROM write enable bit
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EECR |= (1<<EEMPE);
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// Start EEPROM write, interrupts
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// are enabled after write
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sei();
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EECR |= (1<<EEPE);
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}
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uint8_t EEPROM_readbyte(uint16_t addr) {
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// Disable interrupts
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cli();
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// Wait for EEPROM ready
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while(EECR & (1<<EEPE));
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// Set up address and data registers
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EEAR = addr;
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EECR |= (1<<EERE);
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// Enable interrupts and fetch result
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sei();
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uint8_t byte = EEDR;
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return byte;
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}
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void EEPROM_updatebyte(uint16_t addr, uint8_t data) {
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uint8_t byte = EEPROM_readbyte(addr);
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if (byte != data) {
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EEPROM_writebyte(addr, data);
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}
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}
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void config_soft_reboot(void) {
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config_save_to_eeprom();
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wdt_enable(WDTO_15MS);
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while(true) { }
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}
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void config_enable_diagnostics(void) {
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config_output_diagnostics = true;
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}
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void config_disable_diagnostics(void) {
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config_output_diagnostics = false;
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}
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// TODO: remove this
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void config_print(void) {
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uint8_t config_size = ADDR_E_END;
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uint8_t config_data[config_size];
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for (uint16_t addr = 0; addr < config_size; addr++) {
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config_data[addr] = EEPROM_readbyte(addr);
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}
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kiss_output_config(config_data, config_size);
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// printf(PSTR("Running configuration:\r\n"));
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// printf("\tP\t\t%02X\r\n", config_p);
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// printf("\tSlottime\t%lu\r\n", config_slottime);
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// printf("\tPreamble\t%lu\r\n", config_preamble);
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// printf("\tTail\t\t%lu\r\n", config_tail);
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// printf("\tLEDs\t\t%02X\r\n", config_led_intensity);
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// printf("\tOut gain\t%02X\r\n", config_output_gain);
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// printf("\tIn gain\t\t%02X\r\n", 0xFF - config_input_gain);
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// printf("\tPassall\t\t%02X\r\n", config_passall);
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// printf("\tLog pkts\t%02X\r\n", config_log_packets);
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// printf("\tCrypto lock\t%02X\r\n", config_crypto_lock);
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// printf("\tGPS mode\t%02X\r\n", config_gps_mode);
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// printf("\tBT Mode\t\t%02X\r\n", config_bluetooth_mode);
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// printf("\tBaudrate\t%02X\r\n", config_serial_baudrate);
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} |