ESP8266 Community Forum

- Wed Jun 03, 2015 12:02 am #19304 Hi,

Thanks for the answers.

I can not use the read VCC function as i have a step-up converter in front.
I have a voltage divider by some megaohm resistors and a capacitor to get it stable.
The value itself seems ok for the ADC.

I have not the code right in front of me now, but i am trying to read the ADC as soon as possible in the code.

/Kasper

- Wed Jun 03, 2015 11:35 am #19344 The Code:
void user_init(void)
{


volt = system_adc_read();
volt = (volt*330)/1024;
//Init uart
uart_init(BIT_RATE_74880, 0);
system_set_os_print(0);
ets_uart_printf("\r\nBooting...\r\n");
if(wifi_get_opmode() != STATION_MODE)
{
os_printf("ESP8266 is %s mode, restarting in %s mode...\r\n", WiFiMode[wifi_get_opmode()], WiFiMode[STATION_MODE]);
setup_wifi_st_mode();
}
if(wifi_get_phy_mode() != PHY_MODE_11N)
wifi_set_phy_mode(PHY_MODE_11N);
if(wifi_station_get_auto_connect() == 0)
wifi_station_set_auto_connect(1);


struct ip_info info;
IP4_ADDR(&info.ip, 10, 16, 1, 95);
IP4_ADDR(&info.gw, 10, 16, 1, 1);
IP4_ADDR(&info.netmask, 255, 255, 255, 0);
wifi_set_ip_info(STATION_IF, &info);




// Wait for Wi-Fi connection
os_timer_disarm(&WiFiLinker);
os_timer_setfn(&WiFiLinker, (os_timer_func_t *)wifi_check_ip, NULL);
os_timer_arm(&WiFiLinker, 10, 0);

i2c_init();
// Init
if (SHT21_Init())
os_printf("SHT21 init done.\r\n"); //os_printf
else
os_printf("SHT21 init error.\r\n"); //os_printf
}

I believe this is the SDK version: esp_iot_sdk_v1.0.1_b1_15_04_02

/Kasper

- Wed Jun 03, 2015 11:41 am #19347 Moin,

it may be helpful to know if there are any "last words" from the module when it does not wake up properly.
Maybe at 74880 or 115200 baud.

Cal

Get your modules here:

https://www.banggood.com/custlink/KvGGhGF4wG