Espressif ESP8266 Technical Reference page 32

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uint8 spi_no——The number of SPI module. Only input SPI(0) and HSPI(1). Any other
inputs are invalid.
2. void spi_lcd_9bit_write(uint8 spi_no,uint8 high_bit,uint8
low_8bit)
Function:
Provide master SPI transmitting program for driving the chromatic LCD TM035PDZV36.
The LCD module needs a 9 bits transmitting.
Parameters:
uint8 spi_no——The number of SPI module. Only input SPI and HSPI. Any other
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inputs are invalid.
uint8 high_bit——The 9's data. 0 represents the 9's 0 and other data
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represents the 9's 1.
uint8 low_8bit——low 8 bit data.
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3. void spi_master_init(uint8 spi_no)
Function:
Normal master SPI initialization function. Baud rate is the 1/4 frequency of CPU clock. All
the master functions except spi_lcd_9bit_write can be used after initialization.
Parameters:
uint8 spi_no——The number of SPI module. Only input SPI and HSPI. Any other
inputs are invalid.
4. void spi_mast_byte_write(uint8 spi_no,uint8 data)
Function:
Master data sending of one byte.
Parameters:
uint8 spi_no——The number of SPI module. Only input SPI and HSPI. Any other
•
inputs are invalid.
uint8 data——8 bit data receiving.
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5. void spi_byte_write_espslave(uint8 spi_no,uint8 data)
Function:
Write a Byte data for slave SPI.
As the slave is set at 7bits command+1bit address+8bits data, data sending requires 16
bits transmission and the first byte is 0b0000010+0 refer to 3.3
byte is data sending. The actual transmitting waveform is illustrated in Figure 4-1.
Parameters:
uint8 spi_no——The number of SPI module. Only input SPI and HSPI. Any other
•
inputs are invalid.
Espressif 23 86 ! /!
4. SPI Communication User Guide
, i.e. 0x04. The second
2016.05