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https://github.com/cesanta/mongoose.git
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95 lines
3.3 KiB
C
95 lines
3.3 KiB
C
// Copyright (c) 2022 Cesanta Software Limited
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// All rights reserved
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#include "hal.h"
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#include "net.h"
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#define LED1 PIN('B', 0) // On-board LED pin (green)
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#define LED2 PIN('B', 7) // On-board LED pin (blue)
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#define LED3 PIN('B', 14) // On-board LED pin (red)
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#define LED LED2 // Use blue LED for blinking
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#define BLINK_PERIOD_MS 1000 // LED blinking period in millis
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void 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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}
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static void timer_fn(void *arg) {
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struct mg_tcpip_if *ifp = arg; // And show
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const char *names[] = {"down", "up", "ready"}; // network stats
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MG_INFO(("Ethernet: %s, IP: %M, rx:%u, tx:%u, dr:%u, er:%u",
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names[ifp->state], mg_print_ip4, &ifp->ip, ifp->nrecv, ifp->nsent,
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ifp->ndrop, ifp->nerr));
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}
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static void ethernet_init(void) {
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// Initialise Ethernet. Enable MAC GPIO pins, see
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// https://www.farnell.com/datasheets/2014265.pdf section 6.10
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uint16_t pins[] = {PIN('A', 1), PIN('A', 2), PIN('A', 7),
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PIN('B', 13), PIN('C', 1), PIN('C', 4),
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PIN('C', 5), PIN('G', 11), PIN('G', 13)};
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for (size_t i = 0; i < sizeof(pins) / sizeof(pins[0]); i++) {
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gpio_init(pins[i], GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_INSANE,
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GPIO_PULL_NONE, 11); // 11 is the Ethernet function
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}
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NVIC_EnableIRQ(ETH_IRQn); // Setup Ethernet IRQ handler
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SYSCFG->PMC |= SYSCFG_PMC_MII_RMII_SEL; // Use RMII. Goes first!
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RCC->AHB1ENR |=
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RCC_AHB1ENR_ETHMACEN | RCC_AHB1ENR_ETHMACTXEN | RCC_AHB1ENR_ETHMACRXEN;
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}
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static void server(void *args) {
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struct mg_mgr mgr; // Initialise Mongoose event manager
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mg_mgr_init(&mgr); // and attach it to the interface
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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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// Specify MAC address, and IP/mask/GW in network byte order for static
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// IP configuration. If IP/mask/GW are unset, DHCP is going to be used
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ethernet_init();
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struct mg_tcpip_driver_stm32_data driver_data = {.mdc_cr = 4};
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struct mg_tcpip_if mif = {.mac = GENERATE_LOCALLY_ADMINISTERED_MAC(),
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.driver = &mg_tcpip_driver_stm32,
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.driver_data = &driver_data};
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mg_tcpip_init(&mgr, &mif);
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mg_timer_add(&mgr, BLINK_PERIOD_MS, MG_TIMER_REPEAT, timer_fn, &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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web_init(&mgr);
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MG_INFO(("Starting event loop"));
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for (;;) mg_mgr_poll(&mgr, 1); // Infinite event loop
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(void) args;
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}
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static void blinker(void *args) {
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gpio_init(LED, GPIO_MODE_OUTPUT, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_MEDIUM,
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GPIO_PULL_NONE, 0);
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for (;;) {
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gpio_toggle(LED);
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vTaskDelay(pdMS_TO_TICKS(BLINK_PERIOD_MS));
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}
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(void) args;
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}
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int main(void) {
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uart_init(UART_DEBUG, 115200); // Initialise UART
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// Start tasks. NOTE: stack sizes are in 32-bit words
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xTaskCreate(blinker, "blinker", 128, ":)", configMAX_PRIORITIES - 1, NULL);
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xTaskCreate(server, "server", 2048, 0, configMAX_PRIORITIES - 1, NULL);
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vTaskStartScheduler(); // This blocks
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return 0;
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}
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