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PHF000-Firmware
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first draft

This commit is contained in:
Miguel I. 2025-09-08 21:05:07 +02:00
parent 5cd56c8489
commit 600555eb5d
7 changed files with 222 additions and 27 deletions
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4
.vscode/settings.json vendored
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@ -3,6 +3,8 @@
"${workspaceFolder}/build_4/PHF000-Firmware": "Launch PHF000-Firmware"
},
"files.associations": {
"nrfx_temp.h": "c"
"nrfx_temp.h": "c",
"device.h": "c",
"counter.h": "c"
}
}

5
boards/Mi_labs/phf000_board/phf000_board.dts
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@ -183,4 +183,9 @@ zephyr_udc0: &usbd {
&temp {
compatible = "nordic,nrf-temp";
status = "okay";
};
/* Enable Timer3 as counter backend */
&timer3 {
status = "okay";
};

5
boards/Mi_labs/phf000_board/phf000_board_defconfig
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@ -35,4 +35,7 @@ CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=y
CONFIG_SENSOR=y
CONFIG_MULTITHREADING=y
CONFIG_NRFX_TEMP=y
CONFIG_NRFX_TEMP=y
CONFIG_COUNTER=y
CONFIG_NRFX_TIMER3=y

190
drivers/actuator/actuator.c
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@ -1,21 +1,191 @@
#include "actuator.h"
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/printk.h>
#include <zephyr/drivers/counter.h>
#include <zephyr/logging/log.h>
#include <zephyr/device.h>
#include <zephyr/drivers/counter.h>
LOG_MODULE_REGISTER(actuator, LOG_LEVEL_INF);
/* === GPIOs from devicetree === */
#define USER_NODE DT_PATH(zephyr_user)
static const struct gpio_dt_spec do1 = GPIO_DT_SPEC_GET(USER_NODE, do1_gpios);
static const struct gpio_dt_spec do2 = GPIO_DT_SPEC_GET(USER_NODE, do2_gpios);
static const struct gpio_dt_spec do1 = GPIO_DT_SPEC_GET(USER_NODE, do1_gpios);
static const struct gpio_dt_spec do2 = GPIO_DT_SPEC_GET(USER_NODE, do2_gpios);
static const struct gpio_dt_spec do_en = GPIO_DT_SPEC_GET(USER_NODE, do_en_gpios);
void digital_out_init(void) {
/* === Counter device (Timer3) === */
#define COUNTER_NODE DT_NODELABEL(timer3)
static const struct device *counter_dev = DEVICE_DT_GET(COUNTER_NODE);
/* === Constants === */
#define MOTOR_FREQ_HZ 200
#define MOTOR_PERIOD_US (USEC_PER_SEC / MOTOR_FREQ_HZ)
#define SERVO_FREQ_HZ 50
#define SERVO_PERIOD_US (USEC_PER_SEC / SERVO_FREQ_HZ)
/* Servo duty cycle limits */
#define SERVO_MIN_PULSE_US (SERVO_PERIOD_US * 5 / 100) /* 5% → 1 ms */
#define SERVO_MAX_PULSE_US (SERVO_PERIOD_US * 10 / 100) /* 10% → 2 ms */
/* === State === */
static enum actuator_mode current_mode;
static bool initialized = false;
static int motor_speed = 0; /* -100..100 */
static int servo_angle = 0; /* -90..90 */
static struct counter_alarm_cfg alarm_cfg;
static bool active_phase = false;
/* === Forward declarations === */
static void pwm_isr(const struct device *dev,
uint8_t chan_id,
uint32_t ticks,
void *user_data);
/* === Helpers === */
static int configure_gpio(void)
{
if (!device_is_ready(do1.port) || !device_is_ready(do2.port) || !device_is_ready(do_en.port)) {
LOG_ERR("GPIO device not ready");
return -ENODEV;
}
gpio_pin_configure_dt(&do1, GPIO_OUTPUT_INACTIVE);
gpio_pin_configure_dt(&do2, GPIO_OUTPUT_INACTIVE);
gpio_pin_configure_dt(&do_en, GPIO_OUTPUT_INACTIVE);
return 0;
}
void digital_out_set_do1(int state) { gpio_pin_set_dt(&do1, state); }
void digital_out_set_do2(int state) { gpio_pin_set_dt(&do2, state); }
void digital_out_set_do_en(int state) { gpio_pin_set_dt(&do_en, state); }
void digital_out_toggle_do1(void) { gpio_pin_toggle_dt(&do1); }
void digital_out_toggle_do2(void) { gpio_pin_toggle_dt(&do2); }
void digital_out_toggle_do_en(void) { gpio_pin_toggle_dt(&do_en); }
static void start_counter(uint32_t us)
{
uint32_t now_ticks;
int err = counter_get_value(counter_dev, &now_ticks);
if (err)
{
LOG_ERR("Failed to get counter value (%d)", err);
return;
}
uint32_t delay_ticks = counter_us_to_ticks(counter_dev, us);
uint32_t next_ticks = now_ticks + delay_ticks;
alarm_cfg.flags = COUNTER_ALARM_CFG_ABSOLUTE;
alarm_cfg.ticks = next_ticks;
alarm_cfg.callback = pwm_isr;
alarm_cfg.user_data = NULL;
counter_set_channel_alarm(counter_dev, 0, &alarm_cfg);
}
/* === ISR callback === */
static void pwm_isr(const struct device *dev,
uint8_t chan_id,
uint32_t ticks,
void *user_data)
{
ARG_UNUSED(dev);
ARG_UNUSED(chan_id);
ARG_UNUSED(ticks);
ARG_UNUSED(user_data);
if (current_mode == ACTUATOR_MODE_MOTOR) {
if (motor_speed == 0) {
/* Brake mode */
gpio_pin_set_dt(&do1, 1);
gpio_pin_set_dt(&do2, 1);
return;
}
if (!active_phase) {
/* Start ON phase */
if (motor_speed > 0) {
gpio_pin_set_dt(&do1, 1);
gpio_pin_set_dt(&do2, 0);
} else {
gpio_pin_set_dt(&do1, 0);
gpio_pin_set_dt(&do2, 1);
}
uint32_t duty_us = (MOTOR_PERIOD_US * abs(motor_speed)) / 100;
start_counter(duty_us);
active_phase = true;
} else {
/* Start OFF (coast) phase */
gpio_pin_set_dt(&do1, 0);
gpio_pin_set_dt(&do2, 0);
uint32_t off_time = MOTOR_PERIOD_US - (MOTOR_PERIOD_US * abs(motor_speed)) / 100;
start_counter(off_time);
active_phase = false;
}
}
else if (current_mode == ACTUATOR_MODE_SERVO) {
if (!active_phase) {
/* Start ON phase */
gpio_pin_set_dt(&do1, 1);
gpio_pin_set_dt(&do2, 1);
uint32_t duty_us = SERVO_MIN_PULSE_US +
(servo_angle + 90) * (SERVO_MAX_PULSE_US - SERVO_MIN_PULSE_US) / 180;
start_counter(duty_us);
active_phase = true;
} else {
/* Start OFF phase */
gpio_pin_set_dt(&do2, 0);
uint32_t off_time = SERVO_PERIOD_US -
(SERVO_MIN_PULSE_US + (servo_angle + 90) * (SERVO_MAX_PULSE_US - SERVO_MIN_PULSE_US) / 180);
start_counter(off_time);
active_phase = false;
}
}
}
/* === API implementation === */
int actuator_init(enum actuator_mode mode)
{
int ret = configure_gpio();
if (ret) return ret;
if (!device_is_ready(counter_dev)) {
LOG_ERR("Counter device not ready");
return -ENODEV;
}
counter_start(counter_dev);
current_mode = mode;
initialized = true;
active_phase = false;
LOG_INF("Actuator initialized in mode %d", mode);
return 0;
}
int actuator_enable(bool enable)
{
if (!initialized) return -EACCES;
return gpio_pin_set_dt(&do_en, enable ? 1 : 0);
}
int actuator_motor_set_speed(int speed_percent)
{
if (!initialized || current_mode != ACTUATOR_MODE_MOTOR) return -EACCES;
if (speed_percent < -100) speed_percent = -100;
if (speed_percent > 100) speed_percent = 100;
motor_speed = speed_percent;
active_phase = false;
start_counter(1); /* trigger ISR soon */
return 0;
}
int actuator_servo_set_angle(int angle_deg)
{
if (!initialized || current_mode != ACTUATOR_MODE_SERVO) return -EACCES;
if (angle_deg < -90) angle_deg = -90;
if (angle_deg > 90) angle_deg = 90;
servo_angle = angle_deg;
active_phase = false;
start_counter(1); /* trigger ISR soon */
return 0;
}

33
drivers/actuator/actuator.h
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@ -1,12 +1,25 @@
#ifndef ACTUATOR_H
#define ACTUATOR_H
#ifndef ACTUATOR_H_
#define ACTUATOR_H_
void digital_out_init(void);
void digital_out_set_do1(int state);
void digital_out_set_do2(int state);
void digital_out_set_do_en(int state);
void digital_out_toggle_do1(void);
void digital_out_toggle_do2(void);
void digital_out_toggle_do_en(void);
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/counter.h>
#include <stdbool.h>
#endif // ACTUATOR_H
/* Actuator modes */
enum actuator_mode {
ACTUATOR_MODE_MOTOR = 0,
ACTUATOR_MODE_SERVO,
};
/* Public API */
int actuator_init(enum actuator_mode mode);
int actuator_enable(bool enable);
/* Motor mode */
int actuator_motor_set_speed(int speed_percent); // -100..100 %
/* Servo mode */
int actuator_servo_set_angle(int angle_deg); // -90..90 degrees
#endif /* ACTUATOR_H_ */

4
prj.conf
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@ -21,4 +21,6 @@ CONFIG_USB_CDC_ACM=y
CONFIG_USB_DEVICE_PRODUCT="Zephyr USB console sample"
# STEP 1.1 - Enable MCUboot
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_COUNTER=y

8
src/main.c
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@ -27,10 +27,13 @@ int main(void)
return 0;
}
actuator_init(ACTUATOR_MODE_MOTOR);
actuator_enable(1);
actuator_motor_set_speed(50); // -100..100 %
/* Init modules */
led_init();
button_init();
digital_out_init();
ret = battery_adc_init();
if (ret < 0)
{
@ -95,9 +98,6 @@ int main(void)
if (old_val != val)
{
out_en = !out_en;
digital_out_toggle_do1();
digital_out_toggle_do2();
digital_out_toggle_do_en();
led_toggle(1); // toggle LED1 on press
old_val = val;
}