mongoose/examples/wch/ch32v307-make-baremetal-builtin/main.c

134 lines
4.6 KiB
C
Raw Normal View History

2023-11-22 12:23:34 +08:00
// Copyright (c) 2023 Cesanta Software Limited
#include "hal.h"
#include "mongoose.h"
2023-11-27 10:50:46 +08:00
#include "net.h"
2023-11-22 12:23:34 +08:00
#define BTN_PIN PIN('B', 3) // On-board user button
#define LED1_PIN PIN('A', 15) // On-board red LED
#define LED2_PIN PIN('B', 4) // On-board blue LED
#define LED_PIN LED2_PIN
#define UART_DEBUG USART1
#define BLINK_PERIOD_MS 1000 // LED_PIN blinking period in millis
static volatile uint64_t s_ticks; // Milliseconds since boot
__attribute__((interrupt())) void SysTick_Handler(void) {
s_ticks++;
SysTick->SR = 0;
}
uint64_t mg_millis(void) { // Let Mongoose use our uptime function
return s_ticks; // Return number of milliseconds since boot
}
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) {
gpio_toggle(LED_PIN); // Blink LED_PIN
struct mg_tcpip_if *ifp = arg; // And show
const char *names[] = {"down", "up", "req", "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));
}
void SysTick_Init(void) {
SysTick->CMP = SystemCoreClock / 1000 - 1;
SysTick->CNT = 0;
SysTick->SR = 0;
SysTick->CTLR = BIT(0) | BIT(1) | BIT(2) | BIT(3);
NVIC_EnableIRQ(SysTicK_IRQn);
}
static void mg_putchar(char ch, void *param) {
uart_write_byte(param, ch);
}
// https://mongoose.ws/documentation/#2-minute-integration-guide
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
if (ev == MG_EV_HTTP_MSG) {
// The MG_EV_HTTP_MSG event means HTTP request. `hm` holds parsed request,
// see https://mongoose.ws/documentation/#struct-mg_http_message
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
// If the requested URI is "/api/hi", send a simple JSON response back
if (mg_http_match_uri(hm, "/api/hi")) {
// Use mg_http_reply() API function to generate JSON response. It adds a
// Content-Length header automatically. In the response, we show
// the requested URI and HTTP body:
mg_http_reply(c, 200, "", "{%m:%m,%m:%m}\n", // See mg_snprintf doc
MG_ESC("uri"), mg_print_esc, hm->uri.len, hm->uri.ptr,
MG_ESC("body"), mg_print_esc, hm->body.len, hm->body.ptr);
} else {
// For all other URIs, serve static content
mg_http_reply(c, 200, "", "hi tick %llu\n", s_ticks); // See mg_snprintf doc
}
}
(void) fn_data;
}
int main(void) {
SystemCoreClockUpdate();
SysTick_Init();
gpio_output(LED_PIN); // Setup LED
uart_init(UART_DEBUG, 115200); // Initialise debug printf
struct mg_mgr mgr; // Initialise
mg_mgr_init(&mgr); // Mongoose event manager
mg_log_set(MG_LL_DEBUG); // Set log level
mg_log_set_fn(mg_putchar, UART_DEBUG);
ethernet_init(); // Initialise ethernet pins
MG_INFO(("Starting, CPU freq %g MHz", (double) SystemCoreClock / 1000000));
// Initialise Mongoose network stack
struct mg_tcpip_driver_stm32_data driver_data = {.mdc_cr = 1};
struct mg_tcpip_if mif = {.mac = GENERATE_LOCALLY_ADMINISTERED_MAC(),
// Uncomment below for static configuration:
// .ip = mg_htonl(MG_U32(192, 168, 0, 223)),
// .mask = mg_htonl(MG_U32(255, 255, 255, 0)),
// .gw = mg_htonl(MG_U32(192, 168, 0, 1)),
.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..."));
2023-11-27 10:50:46 +08:00
mg_http_listen(&mgr, "http://0.0.0.0:8000", fn, NULL);
web_init(&mgr);
2023-11-22 12:23:34 +08:00
MG_INFO(("Starting event loop"));
for (;;) {
mg_mgr_poll(&mgr, 0);
}
return 0;
}
// Newlib syscalls overrides. IO retargeting, and malloc
int _write(int fd, char *ptr, int len) {
if (fd == 1 || fd == 2) uart_write_buf(UART_DEBUG, ptr, (size_t) len);
return len;
}
void *_sbrk(ptrdiff_t incr) {
extern char _end[];
extern char _heap_end[];
static char *curbrk = _end;
if ((curbrk + incr < _end) || (curbrk + incr > _heap_end)) return NULL - 1;
curbrk += incr;
return curbrk - incr;
}