takara kasai / Mbed 2 deprecated LEDTape_WS2812

change to enable to use new type of WS2812.

Dependencies:   mbed

Fork of LEDTape_WS2812 by Suga koubou

this program is forked from following programs. http://mbed.org/users/okini3939/code/LEDTape_WS2812/

differences

diffs from parent source.

- 1. adapted to new type of WS2812.

- 2. change output level to be reversed.

1.adapted to new type of WS2812.

CODE:0

 __________
|          |________________|

0.4[us] ±150[ns]     0.85[us] ±150[ns] 
(old module: 0.35[us] 0.8[us])

CODE:1

 _______________
|               |___________|

0.8[us] ±150[ns]     0.45[us] ±150[ns] 
(old module: 0.7[us] 0.6[us])

CODE:RET

     > 50[us] 
|______________________|

2. change output level to be reversed

mbed             LED module
----------+            +--------
Vcc       | ---------- | 5[v]
MOSI      | ---|>----- |  DIO
GND       | ---------- | GND
----------+            +--------

syntax : https://mbed.org/cookbook/Wiki-Syntax

main.cpp

Committer:
okini3939
Date:
2013-07-08
Revision:
0:d067ddfe3df9
Child:
1:bbc584b629fa

File content as of revision 0:d067ddfe3df9:

/*
 * WS2812 tape led IC
 */
#include "mbed.h"
#include "LEDStrip.h"

Serial pc(USBTX, USBRX);
DigitalOut led1(LED1), led2(LED2), led3(LED3), led4(LED4);

extern "C"
void HardFault_Handler() {
    printf("Hard Fault!\r\n");
    exit(-1);
}

int main() {
    int i, j, k = 0;

    pc.baud(115200);
    tapeInit(0, 16);
    led1 = 1;

    pc.printf("led\r\n");

    for (;;) {
        for (i = 0; i < 256; i ++) {
            led2 = 1;
            tapeSet(0, (i << 16));
            tapeSet(2, (i << 8));
            tapeSet(4, i);
            tapeSet(6, (i << 8)|i);
            tapeSet(7, (i << 16)|i);
            tapeSet(8, (i << 16)|(i << 8));
            tapeSet(9, (i << 16)|(i << 8)|i);
            tapeSend();
            led2 = 0;
            wait_ms(20);
        }
        for (i = 0; i < 160; i ++) {
            tapeSet(i, 0);
        }
        tapeSend();
    }
}