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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 LeafLabs LLC.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/**
* @brief Sample main.cpp file. Sends "Hello world!" out SPI1.
*
* SPI1 is set up to be a master transmitter at 4.5MHz, little
* endianness, and SPI mode 0.
*
* Pin 10 is used as slave select.
*/
#include <wirish/wirish.h>
#define NSS 10
byte buf[] = "Hello world!";
HardwareSPI spi1(1);
void setup() {
/* Set up chip select as output */
pinMode(NSS, OUTPUT);
/* NSS is usually active LOW, so initialize it HIGH */
digitalWrite(NSS, HIGH);
/* Initialize SPI */
spi1.begin(SPI_4_5MHZ, LSBFIRST, 0);
}
void loop() {
/* Send message */
digitalWrite(NSS, LOW);
spi1.write(buf, sizeof buf);
digitalWrite(NSS, HIGH);
delay(1000);
}
// Force init to be called *first*, i.e. before static object allocation.
// Otherwise, statically allocated objects that need libmaple may fail.
__attribute__((constructor)) void premain() {
init();
}
int main(void) {
setup();
while (true) {
loop();
}
return 0;
}
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