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cleanup main pt1

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This commit is contained in:
Alessandro Mauri 2026-05-31 10:40:24 +02:00
parent 35de89d95d
commit 463109a981
3 changed files with 42 additions and 31 deletions
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10
fw/lib_i2c.h
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@ -10,6 +10,16 @@
#define I2C_DEFAULT_TIMEOUT 50000
#if defined(FUNCONF_USE_DEBUGPRINTF) || defined(FUNCONF_USE_USBPRINTF) || defined(FUNCONF_USE_UARTPRINTF)
#include <stdio.h>
static inline void print_i2c_device(uint8_t addr)
{
printf("Device found at 0x%02X\n", addr);
}
#endif
//! ####################################
//! I2C INIT FUNCTIONS
//! ####################################

32
fw/main.c
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@ -9,42 +9,18 @@
#include "filter.h"
#include "sc7a20.h"
#include "pd.h"
#include "ntc.h"
#include "fpmath.h"
#include "coroutine.h"
// constants
// LUT for converting NTC readings to degrees celsius
// Nominal: 10kOhm, Beta: 3380, Step: 64
// TODO: Add a fixed offset to account for toollerances
const uint8_t ntc_step_size = 64;
const int16_t ntc_lut[] = {
1316, 197, 155, 133, 119, 108, 100, 93, 87, 82, 77, 73, 69, 66, 63, 60,
57, 54, 52, 50, 47, 45, 43, 41, 39, 37, 35, 34, 32, 30, 28, 27,
25, 23, 22, 20, 19, 17, 15, 14, 12, 11, 9, 7, 6, 4, 2, 0,
-1, -3, -5, -7, -9, -11, -14, -16, -19, -22, -25, -28, -32, -38, -44, -55,
-55 // extra value to not have an extra if statement
};
u8g2_t *u8g2;
int16_t encoder = 0; // rotary encoder counter
uint32_t last_interrupt = 0; // last time the encoder interrupt was triggered
struct pd_profile_t pd_profile;
uint16_t vcc_mv = 3300;
// Convert the raw adc reading to a temperature in celsius with the ntc lut,
// linearly interpolating between positions
static inline int16_t get_temp_c(uint16_t adc_reading)
{
if (adc_reading > 4095) return 0;
uint8_t index = adc_reading / ntc_step_size;
uint8_t remainder = adc_reading % ntc_step_size;
int16_t temp_base = index < 64 ? ntc_lut[index] : 0;
int16_t temp_next = ntc_lut[index + 1];
return temp_base + ((temp_next - temp_base) * remainder)/ntc_step_size;
}
// convert the raw TPA191 adc reading to a current in milliamps
static inline int16_t get_current_ma(uint16_t adc_reading)
@ -56,12 +32,6 @@ static inline int16_t get_current_ma(uint16_t adc_reading)
}
void print_i2c_device(uint8_t addr)
{
printf("Device found at 0x%02X\n", addr);
}
// this callback is mandatory when FUNCONF_USE_USBPRINTF is defined,
// can be empty though
void handle_usbfs_input(int numbytes, uint8_t *data)

31
fw/ntc.h Normal file
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@ -0,0 +1,31 @@
#ifndef _NTC_H
#define _NTC_H
#include <stdint.h>
// LUT for converting NTC readings to degrees celsius
// Nominal: 10kOhm, Beta: 3380, Step: 64
// TODO: Add a fixed offset to account for toollerances
const uint8_t ntc_step_size = 64;
const int16_t ntc_lut[] = {
1316, 197, 155, 133, 119, 108, 100, 93, 87, 82, 77, 73, 69, 66, 63, 60,
57, 54, 52, 50, 47, 45, 43, 41, 39, 37, 35, 34, 32, 30, 28, 27,
25, 23, 22, 20, 19, 17, 15, 14, 12, 11, 9, 7, 6, 4, 2, 0,
-1, -3, -5, -7, -9, -11, -14, -16, -19, -22, -25, -28, -32, -38, -44, -55,
-55 // extra value to not have an extra if statement
};
// Convert the raw adc reading to a temperature in celsius with the ntc lut,
// linearly interpolating between positions
static inline int16_t get_temp_c(uint16_t adc_reading)
{
if (adc_reading > 4095) return 0;
uint8_t index = adc_reading / ntc_step_size;
uint8_t remainder = adc_reading % ntc_step_size;
int16_t temp_base = index < ntc_step_size ? ntc_lut[index] : 0;
int16_t temp_next = ntc_lut[index + 1];
return temp_base + ((temp_next - temp_base) * remainder)/ntc_step_size;
}
#endif