ESP8266 datasheet(43/117 Pages) ESPRESSIF

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4. SPI Communication User Guide

Return value

Null

4.5.2.13.SPIIntDisable

Description

Set disable interrupt source.

Function

void SPIIntDisable(SpiNum spiNum, SpiIntSrc intSrc);

Return value

Null

4.5.2.14.SPIIntClear

Description

Clear all interrupt sources.

Function

void SPIIntClear(SpiNum spiNum);

Return value

Null

4.5.3. SPI_Test Demo

The communication format is CMD + ADDR + Data when ESP8266 is in slave mode. The

transmission only with DATA is not supported currently. As the slave, ESP8266 can

respond to different commands. The CMD default values are as follows:

•

CMD = 2, write data to the ESP8266 data register W0 ~ W15;

•

CMD = 3, read data from the ESP8266 data register

•

CMD = 1, write data to the ESP8266 status register;

•

CMD = 4, read data from the ESP8266 status register.

Spi_test demo is based on the SPI communication between two ESP8266. The

communication test followed the steps below.

1. Master sends 32-byte data to slave.

2. Master receive data from slave.

Parameter

Description

spiNum

[in] choose SPI and HSPI.

intSrc

[in] interrupt to set, please refer to

Section 4.5.1.1 SpiIntSrc.

Parameter

Description

spiNum

[in] choose SPI and HSPI.

Espressif

! /!

35 104

2017.05

ESP8266 Datasheet(PDF) 43 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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