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ESP8266 Datasheet(PDF) 70 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Part # ESP8266
Description  General Purpose Input/Output Interface (GPIO)
PDF  117 Pages
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Manufacturer  ESPRESSIF [ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.]
Direct Link  https://www.espressif.com/
Logo ESPRESSIF - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

ESP8266 Datasheet(HTML) 70 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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!
7. SPI Wi-Fi Passthrough 2-Interrupt Mode
CLEAR_PERI_REG_MASK(SPI_SLAVE(HSPI),
SPI_TRANS_DONE_EN|
SPI_SLV_WR_STA_DONE_EN|
SPI_SLV_RD_STA_DONE_EN|
SPI_SLV_WR_BUF_DONE_EN|
SPI_SLV_RD_BUF_DONE_EN);
// resume the SPI slave to communicable status, in order
to prepare for the next communication
SET_PERI_REG_MASK(SPI_SLAVE(HSPI), SPI_SYNC_RESET);
// clear the interrupt flag
CLEAR_PERI_REG_MASK(SPI_SLAVE(HSPI),
SPI_TRANS_DONE|
SPI_SLV_WR_STA_DONE|
SPI_SLV_RD_STA_DONE|
SPI_SLV_WR_BUF_DONE|
SPI_SLV_RD_BUF_DONE);
// turn on the SPI interrupt enable
SET_PERI_REG_MASK(SPI_SLAVE(HSPI),
SPI_TRANS_DONE_EN|
SPI_SLV_WR_STA_DONE_EN|
SPI_SLV_RD_STA_DONE_EN|
SPI_SLV_WR_BUF_DONE_EN|
SPI_SLV_RD_BUF_DONE_EN);
//MISO processing program
if(regvalue&SPI_SLV_WR_BUF_DONE){
GPIO_OUTPUT_SET(0, 0);
//GPIO0 set to be 0
idx=0;
//read the data received
while(idx<8){
recv_data=READ_PERI_REG(SPI_W0(HSPI)+4*idx);
//os_printf("rcv data : 0x%x \n\r",recv_data);
spi_data[4*idx+0] = recv_data&0xff;
spi_data[4*idx+1] = (recv_data>>8)&0xff;
spi_data[4*idx+2] = (recv_data>>16)&0xff;
spi_data[4*idx+3] = (recv_data>>24)&0xff;
Espressif
! /!
62 104
2017.05



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