firmware/edu16_sbc
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Move files to sbc_fw directory to make Arduino IDE shut up

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ThePetrovich 2025-09-22 19:57:15 +08:00
parent db8f8408af
commit 63583ce984
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sbc_fw/utils.cpp Normal file
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/*
* @file utils.cpp
* @brief Utility functions implementation
*
* Created: 21.09.2025
* Author: ThePetrovich
*
* Copyright YKSA - Sakha Aerospace Systems, LLC.
* See the LICENSE file for details.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "utils.h"
#include "config.h"
#include <Arduino.h>
uint16_t calculate_crc16_xmodem(uint8_t *data, uint16_t len)
{
uint16_t crc = 0;
uint8_t i;
while (len--) {
crc ^= (uint16_t)(*data++) << 8;
for (i = 0; i < 8; i++) {
if (crc & 0x8000) {
crc = (crc << 1) ^ 0x1021;
} else {
crc <<= 1;
}
}
}
return crc;
}
int16_t adc_to_temperature_c(uint16_t adc_value)
{
// MCP9700: 500 mV at 0°C, 10 mV per degree, vref = 3.0V
// Result in 0.1°C units
return (int16_t)((adc_value * ADC_VREF_MV / ADC_RESOLUTION - TEMP_SENSOR_OFFSET_MV));
}
uint16_t adc_to_voltage_mv(uint16_t adc_value) { return (uint16_t)(adc_value * VOLTAGE_MV_PER_STEP); }
uint16_t read_adc_oversampled(uint8_t pin, uint8_t samples)
{
uint32_t sum = 0;
uint8_t shift = ((samples == 64) ? 3 : (samples == 16) ? 2 : (samples == 4) ? 1 : 0);
for (uint8_t i = 0; i < samples; i++) {
sum += analogRead(pin);
}
return (uint16_t)(sum >> shift);
}