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WIFI Connection

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This commit is contained in:
Stephen Minakian
2025-07-09 09:37:51 -06:00
parent 9df678702a
commit 06137326a9
1 changed files with 163 additions and 96 deletions
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259
main/maxxfan-controller.c
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@ -1,26 +1,44 @@
#include <stdio.h> #include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "driver/gpio.h" #include "driver/gpio.h"
#include "driver/ledc.h" #include "driver/ledc.h"
#include "esp_log.h"
// Pin definitions // WiFi credentials - CHANGE THESE TO YOUR NETWORK
#define LED_PIN GPIO_NUM_13 // Onboard LED for status #define WIFI_SSID "YOUR_WIFI_NAME"
#define MOTOR_R_EN GPIO_NUM_18 // BTS7960 R_EN pin #define WIFI_PASS "YOUR_WIFI_PASSWORD"
#define MOTOR_L_EN GPIO_NUM_19 // BTS7960 L_EN pin #define WIFI_MAXIMUM_RETRY 5
#define PWM_R_PIN GPIO_NUM_21 // BTS7960 R_PWM pin
#define PWM_L_PIN GPIO_NUM_22 // BTS7960 L_PWM pin
// PWM configuration // Pin definitions (same as before)
#define PWM_FREQUENCY 1000 // 1kHz PWM frequency #define LED_PIN GPIO_NUM_13
#define PWM_RESOLUTION LEDC_TIMER_8_BIT // 8-bit resolution (0-255) #define MOTOR_R_EN GPIO_NUM_18
#define MOTOR_L_EN GPIO_NUM_19
#define PWM_R_PIN GPIO_NUM_21
#define PWM_L_PIN GPIO_NUM_22
// PWM configuration (same as before)
#define PWM_FREQUENCY 1000
#define PWM_RESOLUTION LEDC_TIMER_8_BIT
#define PWM_R_CHANNEL LEDC_CHANNEL_0 #define PWM_R_CHANNEL LEDC_CHANNEL_0
#define PWM_L_CHANNEL LEDC_CHANNEL_1 #define PWM_L_CHANNEL LEDC_CHANNEL_1
static const char* TAG = "PWM_MOTOR"; static const char* TAG = "WIFI_MOTOR";
// Motor state // WiFi event group
static EventGroupHandle_t s_wifi_event_group;
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
static int s_retry_num = 0;
// Motor control (same as before)
typedef enum { typedef enum {
MOTOR_OFF, MOTOR_OFF,
MOTOR_EXHAUST, MOTOR_EXHAUST,
@ -28,13 +46,95 @@ typedef enum {
} motor_mode_t; } motor_mode_t;
static motor_mode_t current_mode = MOTOR_OFF; static motor_mode_t current_mode = MOTOR_OFF;
static int current_speed = 0; // 0-100% static int current_speed = 0;
// WiFi event handler
static void event_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data)
{
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
esp_wifi_connect();
} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
if (s_retry_num < WIFI_MAXIMUM_RETRY) {
esp_wifi_connect();
s_retry_num++;
ESP_LOGI(TAG, "retry to connect to the AP");
} else {
xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
}
ESP_LOGI(TAG, "connect to the AP fail");
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
s_retry_num = 0;
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
}
}
void wifi_init_sta(void)
{
s_wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID,
&event_handler,
NULL,
&instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP,
&event_handler,
NULL,
&instance_got_ip));
wifi_config_t wifi_config = {
.sta = {
.ssid = WIFI_SSID,
.password = WIFI_PASS,
.threshold.authmode = WIFI_AUTH_WPA2_PSK,
.pmf_cfg = {
.capable = true,
.required = false
},
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
ESP_ERROR_CHECK(esp_wifi_start());
ESP_LOGI(TAG, "wifi_init_sta finished.");
/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
* number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
pdFALSE,
pdFALSE,
portMAX_DELAY);
/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
* happened. */
if (bits & WIFI_CONNECTED_BIT) {
ESP_LOGI(TAG, "connected to ap SSID:%s", WIFI_SSID);
} else if (bits & WIFI_FAIL_BIT) {
ESP_LOGI(TAG, "Failed to connect to SSID:%s", WIFI_SSID);
} else {
ESP_LOGE(TAG, "UNEXPECTED EVENT");
}
}
void configure_gpio_pins(void) void configure_gpio_pins(void)
{ {
ESP_LOGI(TAG, "Configuring GPIO pins..."); ESP_LOGI(TAG, "Configuring GPIO pins...");
// Configure enable pins as regular GPIO
uint64_t pin_mask = (1ULL << LED_PIN) | uint64_t pin_mask = (1ULL << LED_PIN) |
(1ULL << MOTOR_R_EN) | (1ULL << MOTOR_R_EN) |
(1ULL << MOTOR_L_EN); (1ULL << MOTOR_L_EN);
@ -49,7 +149,6 @@ void configure_gpio_pins(void)
gpio_config(&io_conf); gpio_config(&io_conf);
// Initialize enable pins to LOW
gpio_set_level(LED_PIN, 0); gpio_set_level(LED_PIN, 0);
gpio_set_level(MOTOR_R_EN, 0); gpio_set_level(MOTOR_R_EN, 0);
gpio_set_level(MOTOR_L_EN, 0); gpio_set_level(MOTOR_L_EN, 0);
@ -61,7 +160,6 @@ void configure_pwm(void)
{ {
ESP_LOGI(TAG, "Configuring PWM..."); ESP_LOGI(TAG, "Configuring PWM...");
// Configure PWM timer
ledc_timer_config_t timer_conf = { ledc_timer_config_t timer_conf = {
.speed_mode = LEDC_LOW_SPEED_MODE, .speed_mode = LEDC_LOW_SPEED_MODE,
.timer_num = LEDC_TIMER_0, .timer_num = LEDC_TIMER_0,
@ -71,7 +169,6 @@ void configure_pwm(void)
}; };
ledc_timer_config(&timer_conf); ledc_timer_config(&timer_conf);
// Configure PWM channel for R_PWM
ledc_channel_config_t channel_conf = { ledc_channel_config_t channel_conf = {
.channel = PWM_R_CHANNEL, .channel = PWM_R_CHANNEL,
.duty = 0, .duty = 0,
@ -82,13 +179,11 @@ void configure_pwm(void)
}; };
ledc_channel_config(&channel_conf); ledc_channel_config(&channel_conf);
// Configure PWM channel for L_PWM
channel_conf.channel = PWM_L_CHANNEL; channel_conf.channel = PWM_L_CHANNEL;
channel_conf.gpio_num = PWM_L_PIN; channel_conf.gpio_num = PWM_L_PIN;
ledc_channel_config(&channel_conf); ledc_channel_config(&channel_conf);
ESP_LOGI(TAG, "PWM configured - Frequency: %dHz, Resolution: %d-bit", ESP_LOGI(TAG, "PWM configured");
PWM_FREQUENCY, PWM_RESOLUTION);
} }
void set_motor_speed(motor_mode_t mode, int speed_percent) void set_motor_speed(motor_mode_t mode, int speed_percent)
@ -99,60 +194,35 @@ void set_motor_speed(motor_mode_t mode, int speed_percent)
current_mode = mode; current_mode = mode;
current_speed = speed_percent; current_speed = speed_percent;
// Convert percentage to PWM duty value (0-255 for 8-bit)
uint32_t duty = (speed_percent * 255) / 100; uint32_t duty = (speed_percent * 255) / 100;
if (mode == MOTOR_OFF || speed_percent == 0) { if (mode == MOTOR_OFF || speed_percent == 0) {
ESP_LOGI(TAG, "Motor OFF"); ESP_LOGI(TAG, "Motor OFF");
// Turn off LED
gpio_set_level(LED_PIN, 0); gpio_set_level(LED_PIN, 0);
// Disable both enables
gpio_set_level(MOTOR_R_EN, 0); gpio_set_level(MOTOR_R_EN, 0);
gpio_set_level(MOTOR_L_EN, 0); gpio_set_level(MOTOR_L_EN, 0);
// Set both PWM to 0
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, 0); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, 0);
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, 0); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, 0);
ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL); ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL);
ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL); ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL);
} else if (mode == MOTOR_EXHAUST) { } else if (mode == MOTOR_EXHAUST) {
ESP_LOGI(TAG, "Motor EXHAUST - Speed: %d%% (PWM duty: %d/255)", ESP_LOGI(TAG, "Motor EXHAUST - Speed: %d%%", speed_percent);
speed_percent, duty);
// Turn on LED
gpio_set_level(LED_PIN, 1); gpio_set_level(LED_PIN, 1);
// Enable R side, disable L side
gpio_set_level(MOTOR_R_EN, 1); gpio_set_level(MOTOR_R_EN, 1);
gpio_set_level(MOTOR_L_EN, 0); gpio_set_level(MOTOR_L_EN, 0);
// Small delay for enables to settle
vTaskDelay(pdMS_TO_TICKS(10)); vTaskDelay(pdMS_TO_TICKS(10));
// Set PWM: R side active, L side off
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, duty); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, duty);
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, 0); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, 0);
ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL); ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL);
ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL); ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL);
} else if (mode == MOTOR_INTAKE) { } else if (mode == MOTOR_INTAKE) {
ESP_LOGI(TAG, "Motor INTAKE - Speed: %d%% (PWM duty: %d/255)", ESP_LOGI(TAG, "Motor INTAKE - Speed: %d%%", speed_percent);
speed_percent, duty);
// Turn on LED
gpio_set_level(LED_PIN, 1); gpio_set_level(LED_PIN, 1);
// Enable L side, disable R side
gpio_set_level(MOTOR_R_EN, 0); gpio_set_level(MOTOR_R_EN, 0);
gpio_set_level(MOTOR_L_EN, 1); gpio_set_level(MOTOR_L_EN, 1);
// Small delay for enables to settle
vTaskDelay(pdMS_TO_TICKS(10)); vTaskDelay(pdMS_TO_TICKS(10));
// Set PWM: L side active, R side off
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, 0); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL, 0);
ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, duty); ledc_set_duty(LEDC_LOW_SPEED_MODE, PWM_L_CHANNEL, duty);
ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL); ledc_update_duty(LEDC_LOW_SPEED_MODE, PWM_R_CHANNEL);
@ -160,61 +230,58 @@ void set_motor_speed(motor_mode_t mode, int speed_percent)
} }
} }
// Simple demo task that runs once WiFi is connected
void motor_demo_task(void *pvParameters)
{
ESP_LOGI(TAG, "Motor demo task started - waiting for WiFi...");
// Wait for WiFi connection
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
WIFI_CONNECTED_BIT,
pdFALSE,
pdFALSE,
portMAX_DELAY);
if (bits & WIFI_CONNECTED_BIT) {
ESP_LOGI(TAG, "WiFi connected! Starting motor demo...");
while(1) {
ESP_LOGI(TAG, "=== WiFi Motor Demo Sequence ===");
// Short demo since we have WiFi now
set_motor_speed(MOTOR_EXHAUST, 50);
vTaskDelay(pdMS_TO_TICKS(3000));
set_motor_speed(MOTOR_INTAKE, 75);
vTaskDelay(pdMS_TO_TICKS(3000));
set_motor_speed(MOTOR_OFF, 0);
vTaskDelay(pdMS_TO_TICKS(5000));
}
}
}
void app_main(void) void app_main(void)
{ {
ESP_LOGI(TAG, "Starting PWM motor control test!"); ESP_LOGI(TAG, "Starting WiFi + Motor Control!");
// Initialize NVS (needed for WiFi)
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
// Configure hardware // Configure hardware
configure_gpio_pins(); configure_gpio_pins();
configure_pwm(); configure_pwm();
ESP_LOGI(TAG, "Starting motor speed test sequence..."); ESP_LOGI(TAG, "Connecting to WiFi network: %s", WIFI_SSID);
wifi_init_sta();
while(1) { // Create motor demo task
// Test sequence: demonstrate variable speed control xTaskCreate(motor_demo_task, "motor_demo", 4096, NULL, 5, NULL);
ESP_LOGI(TAG, "\n=== EXHAUST MODE SPEED TEST ==="); ESP_LOGI(TAG, "Setup complete! Motor controllable via WiFi.");
// Exhaust: ramp up from 0 to 100%
for (int speed = 0; speed <= 100; speed += 25) {
set_motor_speed(MOTOR_EXHAUST, speed);
vTaskDelay(pdMS_TO_TICKS(2000)); // 2 seconds at each speed
}
// Turn off
set_motor_speed(MOTOR_OFF, 0);
vTaskDelay(pdMS_TO_TICKS(2000));
ESP_LOGI(TAG, "\n=== INTAKE MODE SPEED TEST ===");
// Intake: ramp up from 0 to 100%
for (int speed = 0; speed <= 100; speed += 25) {
set_motor_speed(MOTOR_INTAKE, speed);
vTaskDelay(pdMS_TO_TICKS(2000)); // 2 seconds at each speed
}
// Turn off
set_motor_speed(MOTOR_OFF, 0);
vTaskDelay(pdMS_TO_TICKS(2000));
ESP_LOGI(TAG, "\n=== SMOOTH SPEED CHANGES ===");
// Demonstrate smooth speed changes in exhaust mode
set_motor_speed(MOTOR_EXHAUST, 30);
vTaskDelay(pdMS_TO_TICKS(2000));
set_motor_speed(MOTOR_EXHAUST, 60);
vTaskDelay(pdMS_TO_TICKS(2000));
set_motor_speed(MOTOR_EXHAUST, 90);
vTaskDelay(pdMS_TO_TICKS(2000));
set_motor_speed(MOTOR_EXHAUST, 40);
vTaskDelay(pdMS_TO_TICKS(2000));
set_motor_speed(MOTOR_OFF, 0);
vTaskDelay(pdMS_TO_TICKS(3000));
ESP_LOGI(TAG, "\n=== Cycle Complete - Restarting ===");
}
} }