TLC5940 - TLC5940(http://www.ti.com/lit/ds/symlink/tlc5940.…

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TLC5940(http://www.ti.com/lit/ds/symlink/tlc5940.pdf)のlibraryです

TLC5940.cpp@0:ead2ebe1dc77, 2011-12-11 (annotated)

Committer:: suupen
Date:: Sun Dec 11 00:24:02 2011 +0000
Revision:: 0:ead2ebe1dc77

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User	Revision	Line number	New contents of line
suupen	0:ead2ebe1dc77	1	//==========================================================
suupen	0:ead2ebe1dc77	2	//
suupen	0:ead2ebe1dc77	3	// TLC5940.cpp
suupen	0:ead2ebe1dc77	4	// TLC5940(Texas Instruments 16 channel led driver with dot correction and grayscale pwm control)
suupen	0:ead2ebe1dc77	5	// http://datasheet.octopart.com/TLC5940NT-Texas-Instruments-datasheet-121738.pdf
suupen	0:ead2ebe1dc77	6	//==========================================================
suupen	0:ead2ebe1dc77	7	#define _TLC5940_C
suupen	0:ead2ebe1dc77	8
suupen	0:ead2ebe1dc77	9	#include "types.h"
suupen	0:ead2ebe1dc77	10	#include "mbed.h"
suupen	0:ead2ebe1dc77	11	#include "TLC5940.h"
suupen	0:ead2ebe1dc77	12
suupen	0:ead2ebe1dc77	13
suupen	0:ead2ebe1dc77	14
suupen	0:ead2ebe1dc77	15
suupen	0:ead2ebe1dc77	16	/** DC motor direct drive object connected to the specified DigtalOutput pin
suupen	0:ead2ebe1dc77	17	*/
suupen	0:ead2ebe1dc77	18	TLC5940::TLC5940(PinName mosi, PinName miso, PinName sck, PinName xlat, PinName blank, PinName vprg, uint8_t cascade) :
suupen	0:ead2ebe1dc77	19	_spi(mosi, miso, sck), _xlat(xlat), _blank(blank), _vprg(vprg){
suupen	0:ead2ebe1dc77	20
suupen	0:ead2ebe1dc77	21	_xlat = 0;
suupen	0:ead2ebe1dc77	22	_blank = 0;
suupen	0:ead2ebe1dc77	23	_vprg = 0;
suupen	0:ead2ebe1dc77	24
suupen	0:ead2ebe1dc77	25	D_cascade = cascade;
suupen	0:ead2ebe1dc77	26
suupen	0:ead2ebe1dc77	27	tlc5940DotCorrection();
suupen	0:ead2ebe1dc77	28	tlc5940SpiInitalize();
suupen	0:ead2ebe1dc77	29	tlc5940GrayDataClear();
suupen	0:ead2ebe1dc77	30	}
suupen	0:ead2ebe1dc77	31
suupen	0:ead2ebe1dc77	32	/******************************************************************************
suupen	0:ead2ebe1dc77	33	Name : TLC5940 dot correction initalize
suupen	0:ead2ebe1dc77	34	Parameters : none
suupen	0:ead2ebe1dc77	35	Returns : nothing
suupen	0:ead2ebe1dc77	36	Description:
suupen	0:ead2ebe1dc77	37	******************************************************************************/
suupen	0:ead2ebe1dc77	38	void TLC5940::tlc5940DotCorrection(void) {
suupen	0:ead2ebe1dc77	39	_vprg = 1;
suupen	0:ead2ebe1dc77	40	_spi.format(6,0);
suupen	0:ead2ebe1dc77	41	_spi.frequency(Z_clockFrequency);
suupen	0:ead2ebe1dc77	42
suupen	0:ead2ebe1dc77	43
suupen	0:ead2ebe1dc77	44	// _vprg = 1;
suupen	0:ead2ebe1dc77	45
suupen	0:ead2ebe1dc77	46	for (int i = 0; i < (16 * D_cascade); i++) {
suupen	0:ead2ebe1dc77	47	int whoami = _spi.write(Z_dotCorrection);
suupen	0:ead2ebe1dc77	48	}
suupen	0:ead2ebe1dc77	49
suupen	0:ead2ebe1dc77	50	_xlat = 1;
suupen	0:ead2ebe1dc77	51	_xlat = 0;
suupen	0:ead2ebe1dc77	52	}
suupen	0:ead2ebe1dc77	53
suupen	0:ead2ebe1dc77	54	/******************************************************************************
suupen	0:ead2ebe1dc77	55	Name : SPI Initalize (for TLC5960 control)
suupen	0:ead2ebe1dc77	56	Parameters : none
suupen	0:ead2ebe1dc77	57	Returns : nothing
suupen	0:ead2ebe1dc77	58	Description:
suupen	0:ead2ebe1dc77	59	******************************************************************************/
suupen	0:ead2ebe1dc77	60	void TLC5940::tlc5940SpiInitalize(void) {
suupen	0:ead2ebe1dc77	61	_spi.format(12,0);
suupen	0:ead2ebe1dc77	62	_spi.frequency(Z_clockFrequency);
suupen	0:ead2ebe1dc77	63
suupen	0:ead2ebe1dc77	64	_vprg = 0;
suupen	0:ead2ebe1dc77	65	}
suupen	0:ead2ebe1dc77	66
suupen	0:ead2ebe1dc77	67	/******************************************************************************
suupen	0:ead2ebe1dc77	68	Name : TLC5940 Gray Data clear
suupen	0:ead2ebe1dc77	69	Parameters : none
suupen	0:ead2ebe1dc77	70	Returns : nothing
suupen	0:ead2ebe1dc77	71	Description:
suupen	0:ead2ebe1dc77	72	******************************************************************************/
suupen	0:ead2ebe1dc77	73	void TLC5940::tlc5940GrayDataClear(void) {
suupen	0:ead2ebe1dc77	74
suupen	0:ead2ebe1dc77	75	_vprg = 0;
suupen	0:ead2ebe1dc77	76
suupen	0:ead2ebe1dc77	77	for (int i = 0; i < (16 * D_cascade); i++) {
suupen	0:ead2ebe1dc77	78	int whoami = _spi.write(0);
suupen	0:ead2ebe1dc77	79	}
suupen	0:ead2ebe1dc77	80
suupen	0:ead2ebe1dc77	81	_xlat = 1;
suupen	0:ead2ebe1dc77	82	_xlat = 0;
suupen	0:ead2ebe1dc77	83	}
suupen	0:ead2ebe1dc77	84
suupen	0:ead2ebe1dc77	85	/**************************************
suupen	0:ead2ebe1dc77	86	* main
suupen	0:ead2ebe1dc77	87	**************************************/
suupen	0:ead2ebe1dc77	88	void TLC5940::grayDataSetAndDisplay(uint16_t *data) {
suupen	0:ead2ebe1dc77	89
suupen	0:ead2ebe1dc77	90	// *data = &D_grayScale[][]
suupen	0:ead2ebe1dc77	91	// D_grayScale[cascade][16]; // [][0] = out0, [][1] = out1, ... ,[][14] = out15
suupen	0:ead2ebe1dc77	92	// [x][x].11,[x][x].10, ... ,[x][x].1,[x][x].0 = (xxxx xxxx xxxxb) 1gray scale data
suupen	0:ead2ebe1dc77	93
suupen	0:ead2ebe1dc77	94	// [0][0] [0][1] [0][14] [0][15] [1][0] [1][1] [1][14] [1][15] [20][0] 20][1] [20][14] [20][15]
suupen	0:ead2ebe1dc77	95	// \| \| ... \| \| \| \| ... \| \| \| \| ... \| \|
suupen	0:ead2ebe1dc77	96	// ----------------------------------\| ------------------------------------\| ------------------------------------\|
suupen	0:ead2ebe1dc77	97	// \| out0 1 ... 14 15 \|-----------\| out0 1 ... 14 15 \|-----......------\| out0 1 ... 14 15 \|
suupen	0:ead2ebe1dc77	98	// \|TLC5940 (cascade = 1) \| \|TLC5940 (cascade = 2) \| \|TLC5940 (cascade = 21) \|
suupen	0:ead2ebe1dc77	99	// ----------------------------------- ------------------------------------- -------------------------------------
suupen	0:ead2ebe1dc77	100	//
suupen	0:ead2ebe1dc77	101
suupen	0:ead2ebe1dc77	102
suupen	0:ead2ebe1dc77	103	int8_t x; // display data no x 0 - 15
suupen	0:ead2ebe1dc77	104
suupen	0:ead2ebe1dc77	105	#define Z_GSCLKNUM (340) // GRAYSCALE PWM sousin yo clock 4096(PWM) / 12bit(sousin) = 341
suupen	0:ead2ebe1dc77	106	#define Z_GRAYDATA (16 * D_cascade)
suupen	0:ead2ebe1dc77	107
suupen	0:ead2ebe1dc77	108
suupen	0:ead2ebe1dc77	109	_blank = 1;
suupen	0:ead2ebe1dc77	110	_blank = 0;
suupen	0:ead2ebe1dc77	111
suupen	0:ead2ebe1dc77	112
suupen	0:ead2ebe1dc77	113
suupen	0:ead2ebe1dc77	114
suupen	0:ead2ebe1dc77	115	_vprg = 0;
suupen	0:ead2ebe1dc77	116
suupen	0:ead2ebe1dc77	117	for(int i = 0; i < (Z_GSCLKNUM - Z_GRAYDATA); i++){
suupen	0:ead2ebe1dc77	118	// grayscale pwm clock only
suupen	0:ead2ebe1dc77	119	_spi.write(0);
suupen	0:ead2ebe1dc77	120	}
suupen	0:ead2ebe1dc77	121
suupen	0:ead2ebe1dc77	122	// grayscale pwm clock & color data clock
suupen	0:ead2ebe1dc77	123	// green data send
suupen	0:ead2ebe1dc77	124	for(uint8_t C_cascade = 1; C_cascade <= D_cascade; C_cascade++){
suupen	0:ead2ebe1dc77	125	for(x = 0; x < 16; x++){
suupen	0:ead2ebe1dc77	126	_spi.write((uint16_t)(data + (16 (D_cascade - C_cascade)) + (15 - x)));
suupen	0:ead2ebe1dc77	127	}
suupen	0:ead2ebe1dc77	128	}
suupen	0:ead2ebe1dc77	129
suupen	0:ead2ebe1dc77	130
suupen	0:ead2ebe1dc77	131	_xlat = 1;
suupen	0:ead2ebe1dc77	132	_xlat = 0;
suupen	0:ead2ebe1dc77	133
suupen	0:ead2ebe1dc77	134	}
suupen	0:ead2ebe1dc77	135
suupen	0:ead2ebe1dc77	136

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Type:	Library
Created:	11 Dec 2011
Imports:	55
Forks:	1
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	6

TLC5940.cpp@0:ead2ebe1dc77, 2011-12-11 (annotated)

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