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added mqtt connection logik

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rasmus
2026-03-26 16:55:27 +01:00
parent 12d6d0b1e7
commit 2de5d25cea
7 changed files with 116 additions and 41 deletions
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1
CMakeLists.txt
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@@ -51,6 +51,7 @@ target_link_libraries(sensor-pico
dhcp_server dhcp_server
pico_lwip pico_lwip
pico_lwip_http pico_lwip_http
pico_lwip_mqtt
) )
# Erzeugt .uf2 Datei zum Flashen # Erzeugt .uf2 Datei zum Flashen

28
fs/index.html
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@@ -1,20 +1,16 @@
<!DOCTYPE html> <!DOCTYPE html>
<html> <html lang="en">
<head> <head>
<meta charset="utf-8"> <meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Config</title>
<title>Konfiguration</title> </head>
</head> <body>
<body> <h1>Sensor Pico</h1>
<h1>WLAN Einstellungen</h1>
<form action="/config" method="post">
<label>SSID:</label>
<input type="text" name="ssid">
<br> <br>
<label>Passwort:</label> <a href="live_stats.html">Live Daten</a>
<input type="password" name="password">
<br> <br>
<input type="submit" value="Speichern"> <a href="wlan_config.html">WLAN Config</a>
</form> <br>
</body> <a href="mqtt_config.html">MQTT und Messungs Config</a>
</body>
</html> </html>

3
fs/config.html → fs/mqtt_config.html
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@@ -11,6 +11,9 @@
<label>MQTT Adresse:</label> <label>MQTT Adresse:</label>
<input type="text" name="mqtt-address"> <input type="text" name="mqtt-address">
<br> <br>
<label>MQTT Port:</label>
<input type="number" name="mqtt-port">
<br>
<label>MQTT User:</label> <label>MQTT User:</label>
<input type="text" name="mqtt-user"> <input type="text" name="mqtt-user">
<br> <br>

20
fs/wlan_config.html Normal file
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@@ -0,0 +1,20 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Konfiguration</title>
</head>
<body>
<h1>WLAN Einstellungen</h1>
<form action="/config" method="post">
<label>SSID:</label>
<input type="text" name="ssid">
<br>
<label>Passwort:</label>
<input type="password" name="password">
<br>
<input type="submit" value="Speichern">
</form>
</body>
</html>

80
src/main.cpp
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@@ -2,6 +2,7 @@
#include "dhcp_server.h" #include "dhcp_server.h"
#include "hardware/i2c.h" #include "hardware/i2c.h"
#include "lwip/apps/httpd.h" #include "lwip/apps/httpd.h"
#include "lwip/apps/mqtt.h"
#include "pico/cyw43_arch.h" #include "pico/cyw43_arch.h"
#include "pico/stdlib.h" #include "pico/stdlib.h"
#include "webserver.h" #include "webserver.h"
@@ -21,39 +22,88 @@ void ap_init() {
dhcp_server_init(&dhcp_server, &gw, &mask); dhcp_server_init(&dhcp_server, &gw, &mask);
} }
int main() { void reset_mqtt_config() {
int ret{}; memset(saved_mqtt_address, 0, sizeof(saved_mqtt_address));
stdio_init_all(); memset(saved_mqtt_user, 0, sizeof(saved_mqtt_user));
sleep_ms(3000); memset(saved_mqtt_password, 0, sizeof(saved_mqtt_password));
cyw43_arch_init(); saved_measure_frequency = 0;
httpd_init(); saved_post_frequency = 0;
}
while (true) { int connect_to_wifi() {
int ret{};
memset(saved_ssid, 0, sizeof(saved_ssid)); memset(saved_ssid, 0, sizeof(saved_ssid));
memset(saved_password, 0, sizeof(saved_password)); memset(saved_password, 0, sizeof(saved_password));
ap_init(); ap_init();
printf("Return Code: %d\n", ret);
while (saved_ssid[0] == '\0') { while (saved_ssid[0] == '\0') {
cyw43_arch_poll(); cyw43_arch_poll();
sleep_ms(100); sleep_ms(100);
} }
cyw43_arch_disable_ap_mode(); cyw43_arch_disable_ap_mode();
sleep_ms(500);
cyw43_arch_enable_sta_mode(); cyw43_arch_enable_sta_mode();
ret = cyw43_arch_wifi_connect_timeout_ms(saved_ssid, saved_password, ret = cyw43_arch_wifi_connect_timeout_ms(saved_ssid, saved_password,
CYW43_AUTH_WPA2_MIXED_PSK, 10000); CYW43_AUTH_WPA2_MIXED_PSK, 10000);
if (ret == 0) { if (ret == 0) {
break; return 0;
}
return -1;
}
void mqtt_cb(mqtt_client_t *client, void *arg,
mqtt_connection_status_t status) {
int *mqtt_status{static_cast<int *>(arg)};
*mqtt_status = (status == MQTT_CONNECT_ACCEPTED) ? 0 : 1;
}
int connect_to_mqtt() {
static int mqtt_status{-1};
ip_addr_t broker_ip;
static mqtt_client_t *client{};
static mqtt_connect_client_info_t info{};
if (!ipaddr_aton(saved_mqtt_address, &broker_ip)) {
return -1;
}
if (!client) {
client = mqtt_client_new();
}
info.client_id = "sensor-pico";
info.client_user = saved_mqtt_user;
info.client_pass = saved_mqtt_password;
mqtt_client_connect(client, &broker_ip, saved_mqtt_port, mqtt_cb,
&mqtt_status, &info);
while (mqtt_status == -1) {
cyw43_arch_poll();
sleep_ms(100);
}
return mqtt_status;
}
int main() {
int mqtt_ret{-1};
int wifi_status{1};
stdio_init_all();
sleep_ms(3000);
cyw43_arch_init();
httpd_init();
while (wifi_status != 0) {
wifi_status = (connect_to_wifi() == 0) ? 0 : 1;
} }
while (true) { while (true) {
while (saved_mqtt_address[0] == '\0') {
cyw43_arch_poll(); cyw43_arch_poll();
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1); sleep_ms(200);
sleep_ms(100); }
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0); mqtt_ret = connect_to_mqtt();
sleep_ms(100); if (mqtt_ret) {
break;
} else {
reset_mqtt_config();
} }
} }
} }

4
src/webserver.c
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@@ -10,6 +10,7 @@ char saved_mqtt_user[33];
char saved_mqtt_password[65]; char saved_mqtt_password[65];
int saved_measure_frequency; int saved_measure_frequency;
int saved_post_frequency; int saved_post_frequency;
int saved_mqtt_port;
static int post_state; static int post_state;
@@ -70,6 +71,9 @@ void httpd_post_finished(void *connection, char *response_uri,
parse_post("mqtt-user=", '&', saved_mqtt_user, 32); parse_post("mqtt-user=", '&', saved_mqtt_user, 32);
parse_post("mqtt-password=", '&', saved_mqtt_password, 64); parse_post("mqtt-password=", '&', saved_mqtt_password, 64);
parse_post("mqtt-port=", '&', temp, 15);
saved_mqtt_port = atoi(temp);
parse_post("measure-frequency=", '&', temp, 15); parse_post("measure-frequency=", '&', temp, 15);
saved_measure_frequency = atoi(temp); saved_measure_frequency = atoi(temp);

1
src/webserver.h
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@@ -12,6 +12,7 @@ extern char saved_mqtt_user[33];
extern char saved_mqtt_password[65]; extern char saved_mqtt_password[65];
extern int saved_measure_frequency; extern int saved_measure_frequency;
extern int saved_post_frequency; extern int saved_post_frequency;
extern int saved_mqtt_port;
#ifdef __cplusplus #ifdef __cplusplus
} }