Espressif Systems ESP8266EX - Hardware Overview; 2.1. Terminal Configuration and Functions

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3. Sample Codes

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• Examples of RTC

• How to port apps from non-OS SDK to RTOS SDK

3.2.1. Initialization

1. The initialization of application programs can be implemented in user_main.c. The

function void󰲧user_init(void), which is the entry-point function, can be used by users

to implement the initialization process. It is suggested that the SDK’s version information

be printed, and the Wi-Fi working mode be set.

void󰲧user_init(void)

{

󰲧󰲧󰲧󰲧printf("SDK󰲧version:%s\n",󰲧system_get_sdk_version());

󰲧󰲧󰲧󰲧/*󰲧station󰲧+󰲧soft-AP󰲧mode󰲧*/

󰲧󰲧󰲧󰲧Wi-Fi_set_opmode(STATIONAP_MODE);

󰲧󰲧󰲧󰲧……

}

2. ESP8266_RTOS_SDK adopts UART0 to print debugging information by default, and the

baud rate is 74880 by default. UART initialization can be deﬁned by users themselves in

user_init. Please refer to uart_init_new on how to implement this.

Sample of UART driver: \ESP8266_RTOS_SDK\driver_lib\driver\uart.c

Take the initialization of UART0 as an example. Conﬁgure the parameters of UART:

󰲧󰲧󰲧󰲧UART_ConfigTypeDef󰲧uart_config;

󰲧󰲧󰲧󰲧uart_config.baud_rate󰲧󰲧󰲧󰲧=󰲧BIT_RATE_74880;

󰲧󰲧󰲧󰲧uart_config.data_bits󰲧󰲧󰲧󰲧=󰲧UART_WordLength_8b;

󰲧󰲧󰲧󰲧uart_config.parity󰲧󰲧󰲧󰲧󰲧󰲧󰲧=󰲧USART_Parity_None;

󰲧󰲧󰲧󰲧uart_config.stop_bits󰲧󰲧󰲧󰲧=󰲧USART_StopBits_1;

󰲧󰲧󰲧󰲧uart_config.flow_ctrl󰲧󰲧󰲧󰲧=󰲧USART_HardwareFlowControl_None;

󰲧󰲧󰲧󰲧uart_config.UART_RxFlowThresh󰲧=󰲧120;

󰲧󰲧󰲧󰲧uart_config.UART_InverseMask󰲧󰲧=󰲧UART_None_Inverse;

󰲧󰲧󰲧󰲧UART_ParamConfig(UART0,󰲧&uart_config);

󰲧󰲧󰲧󰲧UART_IntrConfTypeDef󰲧uart_intr;

󰲧󰲧󰲧󰲧uart_intr.UART_IntrEnMask󰲧=󰲧UART_RXFIFO_TOUT_INT_ENA󰲧|󰲧UART_FRM_ERR_INT_ENA󰲧|󰲧

UART_RXFIFO_FULL_INT_ENA󰲧|󰲧UART_TXFIFO_EMPTY_INT_ENA;

󰲧󰲧󰲧󰲧uart_intr.UART_RX_FifoFullIntrThresh󰲧=󰲧10;

󰲧󰲧󰲧󰲧uart_intr.UART_RX_TimeOutIntrThresh󰲧=󰲧2;

󰲧󰲧󰲧󰲧uart_intr.UART_TX_FifoEmptyIntrThresh󰲧=󰲧20;

󰲧󰲧󰲧󰲧UART_IntrConfig(UART0,󰲧&uart_intr);

Espressif

! /!5 37

2017.05

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