What is the Espruino equivalence for Arduino SPI.begin()

Posted on Thu 21st, July 2016

• #1

MichaelPralow
While porting some Arduino C code to an Espruino module i stumbled over

SPI.begin()

SPI.begin() Description

Initializes the SPI bus by setting SCK, MOSI, and SS to outputs,
pulling SCK and MOSI low, and SS high.

as far as i understand the Espruino reference for SPI the first part

Initializes the SPI bus by setting SCK, MOSI, and SS to outputs,

is (in part) handled by SPI.setup() e.g.
```
SPI3.setup({mosi:B5,miso:B4,sck:B3,mode:3});
```
for the second part

pulling SCK and MOSI low, and SS high.

i am clueless
- is there something similar for Espruino?
  - If yes, where - maybe hidden from user - ?
- Is that even needed?
• #2

Gordon

It happens as part of setup - when it makes the pins outputs they output the default values for SPI. What exactly those are depends on the mode, but I think as you're using mode 3 that's correct.
• #3

MichaelPralow

thx for the help, i found the mode description on the Wikipedia SPI site

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