Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ESP8266 Datasheet(PDF) 47 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Part # ESP8266
Description  General Purpose Input/Output Interface (GPIO)
PDF  117 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ESPRESSIF [ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.]
Direct Link  https://www.espressif.com/
Logo ESPRESSIF - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

ESP8266 Datasheet(HTML) 47 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Back Button ESP8266 Datasheet HTML 43Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 44Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 45Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 46Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 47Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 48Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 49Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 50Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. ESP8266 Datasheet HTML 51Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. Next Button
Zoom Inzoom in Zoom Outzoom out
 47 / 117 page
background image
!
4. SPI Communication User Guide
spiData.addr = &addr;
spiData.addrLen = 0;
spiData.data = sendData;
spiData.dataLen = 4;
SPIMasterSendData(SpiNum_HSPI, &spiData);
os_printf("\r\n Master receive 4 bytes data from slaver\n");
spiData.cmd = MASTER_READ_DATA_FROM_SLAVE_CMD;
spiData.cmdLen = 0;
spiData.addr = &addr;
spiData.addrLen = 0;
spiData.data = sendData;
spiData.dataLen = 4;
os_memset(sendData, 0, sizeof(sendData));
SPIMasterRecvData(SpiNum_HSPI, &spiData);
os_printf(" Recv Slave data[0x%08x]\r\n", sendData[0]);
#endif
}
spi_slave_test
The SPI buffer used by the slave starts from W8. The program configures SPI mode first
and initializes GPIO. Then it receives the data from the master and uploads the data to SPI
buffer, waiting for the master to read. Finally, the program will modify the value of the status
register.
void ICACHE_FLASH_ATTR spi_slave_test()
{
// SPI initialization configuration, speed = 0 in slave mode
SpiAttr hSpiAttr;
hSpiAttr.bitOrder = SpiBitOrder_MSBFirst;
hSpiAttr.speed = 0;
hSpiAttr.mode = SpiMode_Slave;
hSpiAttr.subMode = SpiSubMode_0;
// Init HSPI GPIO
WRITE_PERI_REG(PERIPHS_IO_MUX, 0x105);
Espressif
! /!
39 104
2017.05



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com