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https://github.com/cesanta/mongoose.git
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121 lines
4.2 KiB
C
121 lines
4.2 KiB
C
// Copyright (c) 2023 Cesanta Software Limited
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// All rights reserved
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#include "hal.h"
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#include "mongoose.h"
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static const char *s_url = "mqtt://broker.hivemq.com:1883";
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static const char *s_sub_topic = "mg/+/test"; // Publish topic
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static const char *s_pub_topic = "mg/clnt/test"; // Subscribe topic
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static const uint8_t s_qos = 1; // MQTT QoS
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static struct mg_connection *s_conn; // Client connection
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void SystemInit(void) { // Called automatically by startup code
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clock_init();
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rng_init();
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}
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static volatile uint64_t s_ticks; // Milliseconds since boot
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void SysTick_Handler(void) { // SyStick IRQ handler, triggered every 1ms
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s_ticks++;
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}
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uint64_t mg_millis(void) { // Let Mongoose use our uptime function
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return s_ticks; // Return number of milliseconds since boot
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}
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bool mg_random(void *buf, size_t len) { // Use on-board RNG
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for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
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uint32_t r = rng_read();
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memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r));
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}
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return true;
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}
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static void fn(struct mg_connection *c, int ev, void *ev_data) {
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if (ev == MG_EV_OPEN) {
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MG_INFO(("%lu CREATED", c->id));
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// c->is_hexdumping = 1;
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} else if (ev == MG_EV_ERROR) {
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// On error, log error message
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MG_ERROR(("%lu ERROR %s", c->id, (char *) ev_data));
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} else if (ev == MG_EV_MQTT_OPEN) {
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// MQTT connect is successful
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struct mg_str subt = mg_str(s_sub_topic);
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struct mg_str pubt = mg_str(s_pub_topic), data = mg_str("hello");
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MG_INFO(("%lu CONNECTED to %s", c->id, s_url));
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struct mg_mqtt_opts sub_opts;
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memset(&sub_opts, 0, sizeof(sub_opts));
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sub_opts.topic = subt;
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sub_opts.qos = s_qos;
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mg_mqtt_sub(c, &sub_opts);
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MG_INFO(("%lu SUBSCRIBED to %.*s", c->id, (int) subt.len, subt.buf));
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struct mg_mqtt_opts pub_opts;
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memset(&pub_opts, 0, sizeof(pub_opts));
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pub_opts.topic = pubt;
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pub_opts.message = data;
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pub_opts.qos = s_qos, pub_opts.retain = false;
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mg_mqtt_pub(c, &pub_opts);
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MG_INFO(("%lu PUBLISHED %.*s -> %.*s", c->id, (int) data.len, data.buf,
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(int) pubt.len, pubt.buf));
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} else if (ev == MG_EV_MQTT_MSG) {
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// When we get echo response, print it
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struct mg_mqtt_message *mm = (struct mg_mqtt_message *) ev_data;
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MG_INFO(("%lu RECEIVED %.*s <- %.*s", c->id, (int) mm->data.len,
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mm->data.buf, (int) mm->topic.len, mm->topic.buf));
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} else if (ev == MG_EV_CLOSE) {
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MG_INFO(("%lu CLOSED", c->id));
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s_conn = NULL; // Mark that we're closed
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}
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}
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// Timer function - recreate client connection if it is closed
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static void timer_fn(void *arg) {
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struct mg_mgr *mgr = (struct mg_mgr *) arg;
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struct mg_mqtt_opts opts = {.clean = true,
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.qos = s_qos,
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.topic = mg_str(s_pub_topic),
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.version = 4,
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.message = mg_str("bye")};
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if (s_conn == NULL) s_conn = mg_mqtt_connect(mgr, s_url, &opts, fn, NULL);
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}
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int main(void) {
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gpio_input(BUTTON_PIN);
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gpio_output(LED_PIN);
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uart_init(UART_DEBUG, 115200);
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ethernet_init();
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MG_INFO(("Starting, CPU freq %g MHz", (double) clock_sys_freq() / 1000000));
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struct mg_mgr mgr; // Initialise
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mg_mgr_init(&mgr); // Mongoose event manager
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mg_log_set(MG_LL_DEBUG); // Set log level
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// Initialise Mongoose network stack
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struct mg_tcpip_driver_same54_data driver_data = {.mdc_cr = 5};
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struct mg_tcpip_if mif = {
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.mac = GENERATE_LOCALLY_ADMINISTERED_MAC() /*{2, 3, 4, 5, 6, 7}*/,
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// Uncomment below for static configuration:
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// .ip = mg_htonl(MG_U32(192, 168, 0, 223)),
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// .mask = mg_htonl(MG_U32(255, 255, 255, 0)),
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// .gw = mg_htonl(MG_U32(192, 168, 0, 1)),
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.driver = &mg_tcpip_driver_same54,
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.driver_data = &driver_data};
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mg_tcpip_init(&mgr, &mif);
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MG_INFO(("MAC: %M. Waiting for IP...", mg_print_mac, mif.mac));
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while (mif.state != MG_TCPIP_STATE_READY) {
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mg_mgr_poll(&mgr, 0);
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}
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MG_INFO(("Initialising application..."));
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mg_timer_add(&mgr, 3000, MG_TIMER_REPEAT | MG_TIMER_RUN_NOW, timer_fn, &mgr);
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MG_INFO(("Starting event loop"));
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for (;;) {
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mg_mgr_poll(&mgr, 0);
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}
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return 0;
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}
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