MirrorSave
/
nodemcu-firmware
mirror of https://github.com/nodemcu/nodemcu-firmware.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

fixes and optional arguments clarification

This commit is contained in:
Arnim Läuger 2017-09-02 11:47:13 +02:00 committed by GitHub
parent 9f8664b8e6
commit c117092da6
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
docs/en/modules/spi.md
View File

@ -10,7 +10,7 @@ The host signals can be mapped to any suitable GPIO pins.
!!! note
The API on ESP32 differs from the API on ESP8266. For backwards compatibility please refer to [`lua_compat/spi_compat.lua`](../../../lua_compat/spi_compat.lua`).
The API on ESP32 differs from the API on ESP8266. For backwards compatibility please refer to [`lua_compat/spi_compat.lua`](../../../lua_compat/spi_compat.lua).
## spi.master()
@ -83,14 +83,14 @@ Adds a device on the given master bus. Up to three devices per bus are supported
- `cs_ena_pretrans`, optional
- `cs_ena_posttrans`, optional
- `duty_cycle_pos`, optional
- `tx_lsb_first` transmit command/address/data LSB first if `true`, MSB first otherwise
- `rx_lsb_first` receive data LSB first if `true`, MSB first otherwise
- `wire3` use spiq for both transmit and receive if `true`, use mosi and miso otherwise
- `positive_cs` chip-select is active high during a transaction if `true`, cs is active low otherwise
- `halfduplex` transmit data before receiving data if `true`, transmit and receive simultaneously otherwise
- `clk_as_cs` output clock on cs line when cs is active if `true`
- `tx_lsb_first` transmit command/address/data LSB first if `true`, MSB first otherwise (or if omitted)
- `rx_lsb_first` receive data LSB first if `true`, MSB first otherwise (or if omitted)
- `wire3` use spiq for both transmit and receive if `true`, use mosi and miso otherwise (or if omitted)
- `positive_cs` chip-select is active high during a transaction if `true`, cs is active low otherwise (or if omitted)
- `halfduplex` transmit data before receiving data if `true`, transmit and receive simultaneously otherwise (or if omitted)
- `clk_as_cs` output clock on cs line when cs is active if `true`, defaults to `false` if omitted
#### Returns
#### Returns
SPI device object
#### Example