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https://github.com/cesanta/mongoose.git
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84 lines
3.5 KiB
C
84 lines
3.5 KiB
C
// Copyright (c) 2022 Cesanta Software Limited
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// All rights reserved
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#include "mcu.h"
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#include "mongoose.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 BTN1 PIN('C', 13) // On-board user button
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static uint64_t s_ticks, s_exti; // Counters, increased by IRQ handlers
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static void blink_cb(void *arg) { // Blink periodically
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// MG_INFO(("ticks: %u", (unsigned) s_ticks));
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gpio_toggle(LED2);
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(void) arg;
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}
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uint64_t mg_millis(void) { // Declare our own uptime function
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return s_ticks; // Return number of milliseconds since boot
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}
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void HardFault_Handler(void) { // Escalated fault handler
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gpio_output(LED3); // Setup red LED
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for (;;) spin(2999999), gpio_toggle(LED3); // Blink LED infinitely
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}
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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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void EXTI15_10_IRQHandler(void) { // External interrupt handler
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s_exti++;
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if (EXTI->PR & BIT(PINNO(BTN1))) EXTI->PR = BIT(PINNO(BTN1));
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gpio_write(LED1, gpio_read(BTN1)); // No debounce. Turn LED if button pressed
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}
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int main(void) {
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static struct uart *uart = UART3; // Use UART3 - its attached to debug
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clock_init(); // Set clock to 216MHz
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systick_init(FREQ / 1000); // Increment s_ticks every ms
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gpio_output(LED1); // Setup green LED
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gpio_output(LED2); // Setup blue LED
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gpio_input(BTN1); // Set button to input
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irq_exti_attach(BTN1); // Attach BTN1 to exti
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uart_init(uart, 115200); // It is wired to the debug port
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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);
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}
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nvic_enable_irq(61); // Setup Ethernet IRQ handler
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RCC->APB2ENR |= BIT(14); // Enable SYSCFG
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SYSCFG->PMC |= BIT(23); // Use RMII. Goes first!
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RCC->AHB1ENR |= BIT(25) | BIT(26) | BIT(27); // Enable Ethernet clocks
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RCC->AHB1RSTR |= BIT(25); // ETHMAC force reset
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RCC->AHB1RSTR &= ~BIT(25); // ETHMAC release reset
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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 MIP interface
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mg_log_set(MG_LL_DEBUG); // Set log level
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mg_timer_add(&mgr, 500, MG_TIMER_REPEAT, blink_cb, &mgr);
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// Initialise Mongoose network stack
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// Specify MAC address, and use 0 for IP, mask, GW - i.e. use DHCP
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// For static configuration, specify IP/mask/GW in network byte order
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struct mip_cfg c = {.mac = {0, 0, 1, 2, 3, 4}, .ip = 0, .mask = 0, .gw = 0};
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struct mip_driver_stm32 driver_data = {.mdc_cr = 4}; // See driver_stm32.h
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mip_init(&mgr, &c, &mip_driver_stm32, &driver_data);
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MG_INFO(("Init done, starting main loop"));
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extern void device_dashboard_fn(struct mg_connection *, int, void *, void *);
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mg_http_listen(&mgr, "http://0.0.0.0", device_dashboard_fn, &mgr);
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for (;;) mg_mgr_poll(&mgr, 0); // Infinite event loop
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return 0;
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}
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