Ned Konz / Mbed 2 deprecated Multi_WS2811_test

Test program for my Multi_WS2811 library that started out as a fork of heroic/WS2811. My library uses hardware DMA on the FRDM-KL25Z to drive up to 16 strings of WS2811 or WS2812 LEDs in parallel.

Dependencies:   Multi_WS2811 mbed MMA8451Q

Fork of WS2811 by Heroic Robotics

NOTE: I have accidentally pushed changes for another fork of this program that I used in the recent Georgetown Carnival Power Tool Races. When I get some time, I will restore the test program to its original glory.

You can see my power tool racer (Nevermore's Revenge) here

/media/uploads/bikeNomad/img_0482.jpg

This tests my FRDM-KL25Z multi-string WS2811/WS2812 library. It uses the accelerometer to change the rainbow phase on two strings of LEDs as well as the touch sense to change brightness.

A video of this program in operation is here.

Here is the library that I developed to run the LEDs:

Import libraryMulti_WS2811

Library allowing up to 16 strings of 60 WS2811 or WS2812 LEDs to be driven from a single FRDM-KL25Z board. Uses hardware DMA to do a full 800 KHz rate without much CPU burden.

Last commit 13 Jun 2015 by Ned Konz

bitband.h@16:5f75ea93f15d, 2013-10-10 (annotated)

Committer:
heroic
Date:
Thu Oct 10 21:52:59 2013 +0000
Revision:
16:5f75ea93f15d
Bump version, add register debug.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
heroic 16:5f75ea93f15d 1 //*****************************************************************************
heroic 16:5f75ea93f15d 2 // +--+
heroic 16:5f75ea93f15d 3 // | ++----+
heroic 16:5f75ea93f15d 4 // +-++ |
heroic 16:5f75ea93f15d 5 // | |
heroic 16:5f75ea93f15d 6 // +-+--+ |
heroic 16:5f75ea93f15d 7 // | +--+--+
heroic 16:5f75ea93f15d 8 // +----+ Copyright (c) 2011 Code Red Technologies Ltd.
heroic 16:5f75ea93f15d 9 //
heroic 16:5f75ea93f15d 10 // Header file containing C macros to provide bitbanding on Cortex-M3 MCU's
heroic 16:5f75ea93f15d 11 //
heroic 16:5f75ea93f15d 12 // Software License Agreement
heroic 16:5f75ea93f15d 13 //
heroic 16:5f75ea93f15d 14 // The software is owned by Code Red Technologies and/or its suppliers, and is
heroic 16:5f75ea93f15d 15 // protected under applicable copyright laws. All rights are reserved. Any
heroic 16:5f75ea93f15d 16 // use in violation of the foregoing restrictions may subject the user to criminal
heroic 16:5f75ea93f15d 17 // sanctions under applicable laws, as well as to civil liability for the breach
heroic 16:5f75ea93f15d 18 // of the terms and conditions of this license.
heroic 16:5f75ea93f15d 19 //
heroic 16:5f75ea93f15d 20 // THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
heroic 16:5f75ea93f15d 21 // OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
heroic 16:5f75ea93f15d 22 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
heroic 16:5f75ea93f15d 23 // USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
heroic 16:5f75ea93f15d 24 // TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
heroic 16:5f75ea93f15d 25 // CODE RED TECHNOLOGIES LTD.
heroic 16:5f75ea93f15d 26 //
heroic 16:5f75ea93f15d 27 //*****************************************************************************
heroic 16:5f75ea93f15d 28
heroic 16:5f75ea93f15d 29 #ifndef BITBAND_H_
heroic 16:5f75ea93f15d 30 #define BITBAND_H_
heroic 16:5f75ea93f15d 31
heroic 16:5f75ea93f15d 32 /* The Cortex-M3 memory map includes two bit-band regions. These occupy the lowest
heroic 16:5f75ea93f15d 33 * 1MB of the SRAM and peripheral memory regions respectively.
heroic 16:5f75ea93f15d 34 * + SRAM: Bit-band region: 0x20000000 - 0x20100000
heroic 16:5f75ea93f15d 35 * Bit-band alias: 0x22000000 - 0x23FFFFFF
heroic 16:5f75ea93f15d 36 * + PERI: Bit-band region: 0x40000000 - 0x40100000
heroic 16:5f75ea93f15d 37 * Bit-band alias: 0x42000000 - 0x43FFFFFF
heroic 16:5f75ea93f15d 38 * The mapping formula:
heroic 16:5f75ea93f15d 39 * bit_word_offset = (byte_offset * 32) + (bit_number * 4)
heroic 16:5f75ea93f15d 40 * bit_word_address = bit_band_base + bit_word_offset
heroic 16:5f75ea93f15d 41 * where:
heroic 16:5f75ea93f15d 42 * + bit_word_offset: the position of the target bit in the bit-band memory region
heroic 16:5f75ea93f15d 43 * + bit_word_addr: the address of the word in the alias memory region that maps to the target bit
heroic 16:5f75ea93f15d 44 * + bit_band_base: the starting address of the alias region
heroic 16:5f75ea93f15d 45 * + byte_offset: the number of byte in the bit-band region that contains the targeted bit
heroic 16:5f75ea93f15d 46 * + bit_number: is the bit position (0-7) of the targeted bit
heroic 16:5f75ea93f15d 47 */
heroic 16:5f75ea93f15d 48
heroic 16:5f75ea93f15d 49 /* Bit band SRAM definitions */
heroic 16:5f75ea93f15d 50 #define BITBAND_SRAM_REF 0x20000000
heroic 16:5f75ea93f15d 51 #define BITBAND_SRAM_BASE 0x22000000
heroic 16:5f75ea93f15d 52
heroic 16:5f75ea93f15d 53 #define BITBAND_SRAM(a,b) ((BITBAND_SRAM_BASE + ((a-BITBAND_SRAM_REF)<<5) + (b<<2))) // Convert SRAM address
heroic 16:5f75ea93f15d 54
heroic 16:5f75ea93f15d 55 /* Bit band PERIPHERAL definitions */
heroic 16:5f75ea93f15d 56 #define BITBAND_PERI_REF 0x40000000
heroic 16:5f75ea93f15d 57 #define BITBAND_PERI_BASE 0x42000000
heroic 16:5f75ea93f15d 58
heroic 16:5f75ea93f15d 59 #define BITBAND_PERI(a,b) ((BITBAND_PERI_BASE + ((a-BITBAND_PERI_REF)<<5) + (b<<2))) // Convert PERI address
heroic 16:5f75ea93f15d 60
heroic 16:5f75ea93f15d 61 /* Basic bit band function definitions */
heroic 16:5f75ea93f15d 62 #define BITBAND_SRAM_ClearBit(a,b) (*(volatile uint32_t *) (BITBAND_SRAM(a,b)) = 0)
heroic 16:5f75ea93f15d 63 #define BITBAND_SRAM_SetBit(a,b) (*(volatile uint32_t *) (BITBAND_SRAM(a,b)) = 1)
heroic 16:5f75ea93f15d 64 #define BITBAND_SRAM_GetBit(a,b) (*(volatile uint32_t *) (BITBAND_SRAM(a,b)))
heroic 16:5f75ea93f15d 65
heroic 16:5f75ea93f15d 66 #define BITBAND_PERI_ClearBit(a,b) (*(volatile uint32_t *) (BITBAND_PERI(a,b)) = 0)
heroic 16:5f75ea93f15d 67 #define BITBAND_PERI_SetBit(a,b) (*(volatile uint32_t *) (BITBAND_PERI(a,b)) = 1)
heroic 16:5f75ea93f15d 68 #define BITBAND_PERI_GetBit(a,b) (*(volatile uint32_t *) (BITBAND_PERI(a,b)))
heroic 16:5f75ea93f15d 69
heroic 16:5f75ea93f15d 70
heroic 16:5f75ea93f15d 71 #endif /* BITBAND_H_ */