// Copyright (c) 2022 Cesanta Software Limited // All rights reserved #include "hal.h" #include "net.h" #define LED1 PIN('B', 0) // On-board LED pin (green) #define LED2 PIN('B', 7) // On-board LED pin (blue) #define LED3 PIN('B', 14) // On-board LED pin (red) #define LED LED2 // Use blue LED for blinking #define BLINK_PERIOD_MS 1000 // LED blinking period in millis void mg_random(void *buf, size_t len) { // Use on-board RNG for (size_t n = 0; n < len; n += sizeof(uint32_t)) { uint32_t r = rng_read(); memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r)); } } static void timer_fn(void *arg) { struct mg_tcpip_if *ifp = arg; // And show const char *names[] = {"down", "up", "ready"}; // network stats MG_INFO(("Ethernet: %s, IP: %M, rx:%u, tx:%u, dr:%u, er:%u", names[ifp->state], mg_print_ip4, &ifp->ip, ifp->nrecv, ifp->nsent, ifp->ndrop, ifp->nerr)); } static void ethernet_init(void) { // Initialise Ethernet. Enable MAC GPIO pins, see // https://www.farnell.com/datasheets/2014265.pdf section 6.10 uint16_t pins[] = {PIN('A', 1), PIN('A', 2), PIN('A', 7), PIN('B', 13), PIN('C', 1), PIN('C', 4), PIN('C', 5), PIN('G', 11), PIN('G', 13)}; for (size_t i = 0; i < sizeof(pins) / sizeof(pins[0]); i++) { gpio_init(pins[i], GPIO_MODE_AF, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_INSANE, GPIO_PULL_NONE, 11); // 11 is the Ethernet function } NVIC_EnableIRQ(ETH_IRQn); // Setup Ethernet IRQ handler SYSCFG->PMC |= SYSCFG_PMC_MII_RMII_SEL; // Use RMII. Goes first! RCC->AHB1ENR |= RCC_AHB1ENR_ETHMACEN | RCC_AHB1ENR_ETHMACTXEN | RCC_AHB1ENR_ETHMACRXEN; } static void server(void *args) { struct mg_mgr mgr; // Initialise Mongoose event manager mg_mgr_init(&mgr); // and attach it to the interface mg_log_set(MG_LL_DEBUG); // Set log level // Initialise Mongoose network stack // Specify MAC address, and IP/mask/GW in network byte order for static // IP configuration. If IP/mask/GW are unset, DHCP is going to be used ethernet_init(); struct mg_tcpip_driver_stm32_data driver_data = {.mdc_cr = 4}; struct mg_tcpip_if mif = {.mac = GENERATE_LOCALLY_ADMINISTERED_MAC(), .driver = &mg_tcpip_driver_stm32, .driver_data = &driver_data}; mg_tcpip_init(&mgr, &mif); mg_timer_add(&mgr, BLINK_PERIOD_MS, MG_TIMER_REPEAT, timer_fn, &mif); MG_INFO(("MAC: %M. Waiting for IP...", mg_print_mac, mif.mac)); while (mif.state != MG_TCPIP_STATE_READY) { mg_mgr_poll(&mgr, 0); } MG_INFO(("Initialising application...")); web_init(&mgr); MG_INFO(("Starting event loop")); for (;;) mg_mgr_poll(&mgr, 1); // Infinite event loop (void) args; } static void blinker(void *args) { gpio_init(LED, GPIO_MODE_OUTPUT, GPIO_OTYPE_PUSH_PULL, GPIO_SPEED_MEDIUM, GPIO_PULL_NONE, 0); for (;;) { gpio_toggle(LED); vTaskDelay(pdMS_TO_TICKS(BLINK_PERIOD_MS)); } (void) args; } int main(void) { uart_init(UART_DEBUG, 115200); // Initialise UART // Start tasks. NOTE: stack sizes are in 32-bit words xTaskCreate(blinker, "blinker", 128, ":)", configMAX_PRIORITIES - 1, NULL); xTaskCreate(server, "server", 2048, 0, configMAX_PRIORITIES - 1, NULL); vTaskStartScheduler(); // This blocks return 0; }