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1. 

   stars
   Member

   Hi ho!

   Looks like libmaple.h needs to be included to do SPI stuff -- perhaps either HardwareSPI.h should require it, or the documentation at http://leaflabs.com/docs/spi could use a comment?

   Posted 5 years ago #
2. 

   perry
   Administrator

   yo star,

   The documentation needs to get cleaned up, you shouldn't need to include anything. Can you try this sketch and see if the SPI works for you?

   #define CS      10
   
   byte buf[] = "Hello world!";
   
   HardwareSPI spi1(1);
   
   void setup() {
      /* Set up chip select as output  */
      pinMode(CS, OUTPUT);
   
      /* CS is usually active low, so initialize it high  */
      digitalWrite(CS, HIGH);
   
      /* Initialize SPI   */
      spi1.begin(SPI_4_5MHZ, LSBFIRST, 0);
   }
   
   void loop() {
      /* Send message  */
      digitalWrite(CS, LOW);
      spi1.send(buf, sizeof buf);
      digitalWrite(CS,HIGH);
      delay(1000);
   }

   Let me know if this doesn't work for you.

   BTW, we'll add this to the documentation, but there's also another form of the HardwareSPI constructor that sets up the SPI at the following default values:

   speed: 1.125 MHZ
   endianness: MSB
   SPI Mode: 0

   You can call it just by doing
   spi1.begin()

   Posted 5 years ago #
3. 

   stars
   Member

   Yep, this compiles & uploads fine.

   I was getting some errors that said something about uint8 and uint32 being unrecognized types, that disappeared after I include libmaple. This does not seem to cause those errors.

   Posted 5 years ago #
4. 

   poslathian
   LeafLabs

   shouldnt toggling chip select be part of the spi.send()?

   also, star, could you give more info on the type errors? was that from the ide?

   Posted 5 years ago #

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