Corrupted data returned from ESP8285 when in SOFTAP mode
Posted: Wed Sep 11, 2019 8:27 amHello,
I have a simple code which sets ESP8285 as an AP and creates a TCP socket beween an Android App and the ESP8285 with the latter being the server. The app sends commands (strings) to the ESP8285 which are printed on the serial interface for debug. The problem is that, most of the time the messages received by the ESP8285 are truncated and/or corrupted. If I connect the same two devices to a shared AP and then create a TCP socket, the messages are received correctly.
Below are the functions which program the ESP8285 as an AP and a server, as well as the receive callback function which does not do anything rather than printing the received message to the serial interface.
Any help would be appreciated.
I have a simple code which sets ESP8285 as an AP and creates a TCP socket beween an Android App and the ESP8285 with the latter being the server. The app sends commands (strings) to the ESP8285 which are printed on the serial interface for debug. The problem is that, most of the time the messages received by the ESP8285 are truncated and/or corrupted. If I connect the same two devices to a shared AP and then create a TCP socket, the messages are received correctly.
Below are the functions which program the ESP8285 as an AP and a server, as well as the receive callback function which does not do anything rather than printing the received message to the serial interface.
Any help would be appreciated.
Code: Select all
void wifi_createAP()
{
if (wifi_get_opmode() != SOFTAP_MODE)
{
wifi_set_opmode(SOFTAP_MODE);
}
//AP configuration
struct softap_config softapConf;
os_memset(softapConf.ssid, 0, 32);
os_memcpy(&softapConf.ssid, "ESP", 5);
softapConf.ssid_len = 3;
os_memset(softapConf.password, 0, 64);
softapConf.channel = 1;
softapConf.authmode = AUTH_OPEN;
softapConf.ssid_hidden = 0;
softapConf.max_connection = 4;
softapConf.beacon_interval = 100;
wifi_softap_set_config_current(&softapConf);
if(wifi_softap_dhcps_status() != DHCP_STARTED)
{
if(!wifi_softap_dhcps_start())
{
return ReturnERROR();
}
}
debug_print("\r\nAP is created!\r\n");
}
bool wifi_create_server(int argc, char** argv)
{
int8_t status = 0;
uint16_t port = parse_u16(argv[0], 0);
uint16_t server_timeout = parse_u16(argv[1], 0);
if (espconn_ptr == NULL)
{
espconn_ptr = (struct espconn*)os_zalloc(sizeof(struct espconn));
}
espconn_ptr->type = ESPCONN_TCP;
espconn_ptr->state = ESPCONN_NONE;
if (espconn_ptr->proto.tcp == NULL)
{
espconn_ptr->proto.tcp = (esp_tcp*)os_zalloc(sizeof(esp_tcp));
}
espconn_ptr->proto.tcp->local_port = port;
espconn_regist_connectcb(espconn_ptr, user_tcp_server_connect_cb);
espconn_regist_reconcb(espconn_ptr, user_tcp_server_recon_cb);
status = espconn_accept(espconn_ptr);
espconn_regist_time(espconn_ptr, server_timeout, 0);
if (status != 0)
{
return ReturnERROR();
}
debug_print("Server created\r\n");
return true;
}
void user_tcp_recv_cb(void* arg, char* pusrdata, unsigned short length)
{
debug_print("%s\r\n", pusrdata);
}