SHERPA/microros_turntable_controller
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led0

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This commit is contained in:
Timo Schneider
2025-08-23 10:27:29 +02:00
parent 0bb1b5d026
commit 6c53932267
4 changed files with 74 additions and 55 deletions
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103
src/main.cpp
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@@ -5,18 +5,16 @@
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/posix/time.h>
#else
#include <zephyr.h>
#include <device.h>
#include <devicetree.h>
#include <drivers/gpio.h>
#include <posix/time.h>
#endif
#include <rcl/rcl.h>
#include <rcl/error_handling.h>
#include <std_msgs/msg/int32.h>
#include <std_msgs/msg/bool.h>
#include <rclc/rclc.h>
#include <rclc/executor.h>
@@ -27,69 +25,66 @@
#define RCCHECK(fn) { rcl_ret_t temp_rc = fn; if((temp_rc != RCL_RET_OK)){printf("Failed status on line %d: %d. Aborting.\n",__LINE__,(int)temp_rc);for(;;){};}}
#define RCSOFTCHECK(fn) { rcl_ret_t temp_rc = fn; if((temp_rc != RCL_RET_OK)){printf("Failed status on line %d: %d. Continuing.\n",__LINE__,(int)temp_rc);}}
rcl_publisher_t publisher;
std_msgs__msg__Int32 msg;
rcl_subscription_t subscriber;
void timer_callback(rcl_timer_t * timer, int64_t last_call_time)
std_msgs__msg__Bool msg;
static const struct gpio_dt_spec led0 = GPIO_DT_SPEC_GET(DT_ALIAS(led0), gpios);
void led0_callback(const void *msgin)
{
RCLC_UNUSED(last_call_time);
if (timer != NULL) {
RCSOFTCHECK(rcl_publish(&publisher, &msg, NULL));
printk("msg: %d", msg.data++);
}
const std_msgs__msg__Bool *msg = (const std_msgs__msg__Bool *)msgin;
gpio_pin_configure_dt(&led0, msg->data ? GPIO_OUTPUT_ACTIVE : GPIO_OUTPUT_INACTIVE);
}
int main(void)
{
rmw_uros_set_custom_transport(
MICRO_ROS_FRAMING_REQUIRED,
(void *) &default_params,
zephyr_transport_open,
zephyr_transport_close,
zephyr_transport_write,
zephyr_transport_read
);
if (!device_is_ready(led0.port)) {
printk("LED not ready\n");
return -1;
}
rcl_allocator_t allocator = rcl_get_default_allocator();
rclc_support_t support;
/* micro-ROS transport setup */
rmw_uros_set_custom_transport(
MICRO_ROS_FRAMING_REQUIRED,
(void *)&default_params,
zephyr_transport_open,
zephyr_transport_close,
zephyr_transport_write,
zephyr_transport_read
);
// create init_options
RCCHECK(rclc_support_init(&support, 0, NULL, &allocator));
rcl_allocator_t allocator = rcl_get_default_allocator();
rclc_support_t support;
// create node
rcl_node_t node;
RCCHECK(rclc_node_init_default(&node, "zephyr_int32_publisher", "", &support));
RCCHECK(rclc_support_init(&support, 0, NULL, &allocator));
// create publisher
RCCHECK(rclc_publisher_init_default(
&publisher,
&node,
ROSIDL_GET_MSG_TYPE_SUPPORT(std_msgs, msg, Int32),
"zephyr_int32_publisher"));
rcl_node_t node;
RCCHECK(rclc_node_init_default(&node, "zephyr_servo_node", "", &support));
// create timer,
rcl_timer_t timer;
const unsigned int timer_timeout = 1000;
RCCHECK(rclc_timer_init_default(
&timer,
&support,
RCL_MS_TO_NS(timer_timeout),
timer_callback));
/* Create subscriber for /servo/position */
RCCHECK(rclc_subscription_init_default(
&subscriber,
&node,
ROSIDL_GET_MSG_TYPE_SUPPORT(std_msgs, msg, Bool),
"/nucleo/led0"
));
// create executor
rclc_executor_t executor;
RCCHECK(rclc_executor_init(&executor, &support.context, 1, &allocator));
RCCHECK(rclc_executor_add_timer(&executor, &timer));
/* Create executor */
rclc_executor_t executor;
RCCHECK(rclc_executor_init(&executor, &support.context, 1, &allocator));
RCCHECK(rclc_executor_add_subscription(&executor, &subscriber, &msg, &led0_callback, ON_NEW_DATA));
msg.data = 0;
/* Spin executor loop */
while (1) {
rclc_executor_spin_some(&executor, 100);
k_sleep(K_MSEC(10));
}
while(1){
rclc_executor_spin_some(&executor, 100);
usleep(100000);
}
/* Free resources (unreachable in infinite loop) */
RCCHECK(rcl_subscription_fini(&subscriber, &node))
RCCHECK(rcl_node_fini(&node))
// free resources
RCCHECK(rcl_publisher_fini(&publisher, &node))
RCCHECK(rcl_node_fini(&node))
return 0;
}
return 0;
}