alema/usbc_soldering_iron
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base: alema:a7d3ceaffe37eb1b311101817d7ac45dd7453fb0
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alema:master
alema:external-handle
alema:different-filter
alema:nofilter
alema:nodriver
alema:high-pmos
alema:v0.1
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compare: alema:b4086ddea039ff1d87a1f95421e9e58e007ef00b
Branches Tags
alema:external-handle
alema:master
alema:different-filter
alema:nofilter
alema:nodriver
alema:high-pmos
alema:v0.1

3 Commits
a7d3ceaffe ... b4086ddea0

Author SHA1 Message Date
Alessandro Mauri
b4086ddea0 100W 2026-05-16 18:34:34 +02:00
Alessandro Mauri
ccdf7e9981 tweak pid for less overshoot 2026-05-16 18:34:24 +02:00
Alessandro Mauri
d875568d9a oops, actually call setup() 2026-05-16 18:34:04 +02:00
1 changed files with 8 additions and 3 deletions
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fw/main.c
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@ -353,7 +353,7 @@ uint16_t pid(int16_t delta, int16_t max_duty)
// PID coefficients // PID coefficients
const fp16_t Kp = num2fp( 1, 1700, 4); const fp16_t Kp = num2fp( 1, 1700, 4);
const fp16_t Ti = num2fp(10, 0000, 4); const fp16_t Ti = num2fp(10, 0000, 4);
const fp16_t Td = num2fp( 0, 700, 4); const fp16_t Td = num2fp( 0, 1500, 4);
static fp16_t err_p, err_i, intgrt, err_d, dt, prev_err; static fp16_t err_p, err_i, intgrt, err_d, dt, prev_err;
static u32 t, prev_t; static u32 t, prev_t;
@ -361,6 +361,9 @@ uint16_t pid(int16_t delta, int16_t max_duty)
t = funSysTick32(); t = funSysTick32();
dt = fp_div(i2fp((t-prev_t)/DELAY_MS_TIME), i2fp(1000)); dt = fp_div(i2fp((t-prev_t)/DELAY_MS_TIME), i2fp(1000));
// if pid was paused, reset the integrator
if (dt > num2fp(0, 2, 1)) intgrt = 0;
fp16_t err = i2fp(delta); // temperature delta as fixed point number fp16_t err = i2fp(delta); // temperature delta as fixed point number
err_p = err; err_p = err;
@ -460,6 +463,8 @@ static inline void setup(void)
__attribute__((noreturn)) int main(void) __attribute__((noreturn)) int main(void)
{ {
setup();
u8g2_ClearBuffer(u8g2); u8g2_ClearBuffer(u8g2);
u8g2_SetFont(u8g2, u8g2_font_5x8_tr); u8g2_SetFont(u8g2, u8g2_font_5x8_tr);
u8g2_DrawStr(u8g2, x_off+0, y_off+7, "Negotiating..."); u8g2_DrawStr(u8g2, x_off+0, y_off+7, "Negotiating...");
@ -480,11 +485,11 @@ __attribute__((noreturn)) int main(void)
Delay_Ms(100); Delay_Ms(100);
} }
} else { } else {
pd_get_profile(&pd_profile, 60); pd_get_profile(&pd_profile, 100);
// TODO: let the user decide the power profile // TODO: let the user decide the power profile
pd_profile.set_temp = 200; pd_profile.set_temp = 200;
pd_profile.set_power = 60; // Slightly below max power to avoid overloading pd_profile.set_power = 95; // Slightly below max power to avoid overloading
pd_profile.tip_r = 2500; // TODO: tip check and resistance calculator pd_profile.tip_r = 2500; // TODO: tip check and resistance calculator
pd_profile.max_duty = MIN( pd_profile.max_duty = MIN(
(100*(u32)isqrt(( (100*(u32)isqrt((