RickKimball

This code is used to drive a ws281x strip using SPI driven by DMA on an msp430f5529.

RickKimball

/*
 * dwt_timer.h
 *
 *  Created on: Jun 15, 2015
 *      Author: kimballr
 */

#ifndef DWT_TIMER_H_
#define DWT_TIMER_H_

RickKimball

// more fun with c++ classes and templates
// http://www.stm32duino.com/viewtopic.php?f=18&t=303
class GPIOPort :
  public gpio_reg_map {
public:
  void high(const uint32_t pin) {
    BSRR = 1 << pin;
  }
  void low(const uint32_t pin) {
    BRR = 1 << pin;

RickKimball

diff --git a/STM32F1/cores/maple/ext_interrupts.h b/STM32F1/cores/maple/ext_interrupts.h
index ce1ca03..a406868 100644
--- a/STM32F1/cores/maple/ext_interrupts.h
+++ b/STM32F1/cores/maple/ext_interrupts.h
@@ -106,7 +106,7 @@ void detachInterrupt(uint8 pin);
  *
  * @see noInterrupts()
  */
-static __always_inline void interrupts() {
+static inline __always_inline void interrupts() {

RickKimball

/*
 *  ActiveLowLED - class for leds that light up when they are grounded
 */
#include <Arduino.h>
#pragma once

class ActiveLowLED {
private:
  const int _pin;
  int _initialized;

RickKimball

/* This is the code that gets called when the processor first starts execution */
/* following a reset event.  Only the absolutely necessary set is performed,   */
/* after which the application supplied entry() routine is called.  Any fancy  */
/* actions (such as making decisions based on the reset cause register, and    */
/* resetting the bits in that register) are left solely in the hands of the    */
/* application.                                                                */

void resetISR(void) {
#ifdef WDTHOLD
    WDTCTL = WDTPW + WDTHOLD;

RickKimball

RickKimball

/*******************************************************************************
 *  iomacros.h - hacked version to work with .S files properly
 *
 *  Copyright (C) 2003-2013 Texas Instruments Incorporated - http://www.ti.com/
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright

RickKimball

all: main

main: main.cpp
	gcc -std=c++0x -Os -g -Wall -o $@ $< 

clean:
	rm -f main

test:
	./main

RickKimball

#!/bin/bash

set -x 
set -e
#export LU="-Wl,-uTimer0_A0_Handler -Wl,-umain"

export CFLAGS="-I. -mmcu=msp430f5529 -Os -fdata-sections -ffunction-sections"
export LU="-Wl,-uTimer0_A0_Handler,-umain,--gc-section"
export LDFLAGS="-L . -lintr"