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httpclient.c
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httpclient.c
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#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include "lwip/apps/http_client.h"
char myBuff[4096];
void result(void *arg, httpc_result_t httpc_result,
u32_t rx_content_len, u32_t srv_res, err_t err)
{
printf("\ntransfer complete\n");
printf("local result=%d\n", httpc_result);
printf("http result=%d\n", srv_res);
}
err_t headers(httpc_state_t *connection, void *arg,
struct pbuf *hdr, u16_t hdr_len, u32_t content_len)
{
printf("\nheaders recieved\n");
printf("content length=%d\n", content_len);
printf("header length %d\n", hdr_len);
pbuf_copy_partial(hdr, myBuff, hdr->tot_len, 0);
printf("headers \n");
printf("%s", myBuff);
return ERR_OK;
}
err_t body(void *arg, struct altcp_pcb *conn,
struct pbuf *p, err_t err)
{
printf("body\n");
pbuf_copy_partial(p, myBuff, p->tot_len, 0);
//int s = strlen(myBuff);
printf("body length %d\n", p->tot_len);
//printf("%s", myBuff);
return ERR_OK;
}
int setup(uint32_t country, const char *ssid,
const char *pass, uint32_t auth,
const char *hostname, ip_addr_t *ip,
ip_addr_t *mask, ip_addr_t *gw)
{
if (cyw43_arch_init_with_country(country))
{
return 1;
}
cyw43_arch_enable_sta_mode();
if (hostname != NULL)
{
netif_set_hostname(netif_default, hostname);
}
int err;
char buffer[255];
int retrycount = 0;
while (retrycount < 10)
{
// if (cyw43_arch_wifi_connect_async(ssid, pass, auth))
if (err = cyw43_arch_wifi_connect_timeout_ms(ssid, pass, auth, 30000)) {
sprintf(buffer, "Error connecting to WiFi: %d", err);
printf("%s\n", buffer);
retrycount++;
sleep_ms(1000);
printf("Retrying connection %d/10", retrycount);
} else {
break;
}
}
if ( err != 0) {
return 2;
}
int flashrate = 1000;
int status = CYW43_LINK_UP + 1;
while (status >= 0 && status != CYW43_LINK_UP)
{
printf("Retrying connection\n");
int new_status = cyw43_tcpip_link_status(
&cyw43_state, CYW43_ITF_STA);
if (new_status != status)
{
status = new_status;
flashrate = flashrate / (status + 1);
printf("connect status: %d %d\n",
status, flashrate);
}
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
sleep_ms(flashrate);
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
sleep_ms(flashrate);
}
if (status < 0)
{
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
}
else
{
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
if (ip != NULL)
{
netif_set_ipaddr(netif_default, ip);
}
if (mask != NULL)
{
netif_set_netmask(netif_default, mask);
}
if (gw != NULL)
{
netif_set_gw(netif_default, gw);
}
printf("IP: %s\n",
ip4addr_ntoa(netif_ip_addr4(netif_default)));
printf("Mask: %s\n",
ip4addr_ntoa(netif_ip_netmask4(netif_default)));
printf("Gateway: %s\n",
ip4addr_ntoa(netif_ip_gw4(netif_default)));
printf("Host Name: %s\n",
netif_get_hostname(netif_default));
}
return status;
}
#ifndef WIFI_SSID
#define WIFI_SSID "WIFI_SSID"
#endif
#ifndef WIFI_PASSWORD
#define WIFI_PASSWORD "WIFI_PASS"
#endif
char ssid[] = WIFI_SSID;
char pass[] = WIFI_PASSWORD;
uint32_t country = CYW43_COUNTRY_NETHERLANDS;
uint32_t auth = CYW43_AUTH_WPA2_MIXED_PSK;
int main()
{
stdio_init_all();
for (int i = 0; i < 3; i++)
{
printf("Wake-up USB\n");
sleep_ms(1000);
}
printf("SSID: %s\n", ssid);
printf("PASS: %s\n", pass);
printf("Country: %s\n", WIFI_COUNTRY);
printf("Remote url: %s\n", SERVER_URL);
printf("Remote port: %s\n", SERVER_PORT);
printf("Relative url: %s\n", RELATIVE_URL);
if (strlen(WIFI_COUNTRY) == 2)
{
country = CYW43_COUNTRY(WIFI_COUNTRY[0],
WIFI_COUNTRY[1], 0);
}
else
{
printf("Invalid country code, halting\n");
while (1)
{
tight_loop_contents();
}
}
if (setup(country, ssid, pass, auth,
"MyPicoW", NULL, NULL, NULL) == CYW43_LINK_UP)
{
uint16_t port = 80;
httpc_connection_t settings;
settings.result_fn = result;
settings.headers_done_fn = headers;
int serverport = atoi(SERVER_PORT);
err_t err = httpc_get_file_dns(
SERVER_URL,
serverport,
RELATIVE_URL,
&settings,
body,
NULL,
NULL);
printf("status %d \n", err);
}
while (true) {
cyw43_arch_poll();
// you can poll as often as you like, however if you have nothing else to do you can
// choose to sleep until either a specified time, or cyw43_arch_poll() has work to do:
//cyw43_arch_wait_for_work_until(make_timeout_time_ms(1000));
/* Handle all system timeouts for all core protocols */
}
}