LEDDriver_NXP_Arduino 0.5.0
LED driver device operation sample code for Arduino
Loading...
Searching...
No Matches
LEDDriver.cpp
1#include "LEDDriver.h"
2
3/* LEDDriver class ******************************************/
4
5LEDDriver::LEDDriver( uint8_t n_ch, uint8_t PWM_r, uint8_t oe ) :
6 n_channel( n_ch ), reg_PWM( PWM_r ), oe_pin( oe ), bp( NULL )
7{
8}
9
10LEDDriver::~LEDDriver()
11{
12 if ( bp )
13 delete[] bp;
14}
15
16void LEDDriver::pwm( uint8_t ch, float value )
17{
18 if ( bp ) {
19 bp[ ch ] = (uint8_t)(value * 255.0);
20 }
21 else {
22 reg_access( reg_PWM + ch, (uint8_t)(value * 255.0) );
23 }
24}
25
26void LEDDriver::pwm( float* values )
27{
28 if ( bp ) {
29 for ( int i = 0; i < n_channel; i++ )
30 bp[ i ] = (uint8_t)(values[ i ] * 255.0);
31 }
32 else {
33 uint8_t v[ n_channel ];
34 for ( int i = 0; i < n_channel; i++ )
35 v[ i ] = (uint8_t)(values[ i ] * 255.0);
36
37 reg_access( 0x80 | reg_PWM, v, n_channel );
38 }
39}
40
41void LEDDriver::flush( void )
42{
43 if ( bp )
44 reg_access( 0x80 | reg_PWM, bp, n_channel );
45}
46
47void LEDDriver::buffer_enable( bool flag )
48{
49 if ( bp ) {
50 delete[] bp;
51 bp = NULL;
52 }
53
54 if ( flag ) {
55 bp = new uint8_t[ n_channel ];
56 for ( int i = 0; i < n_channel; i++ )
57 bp[ i ] = 0x00;
58 }
59
60}
61
62
63/* PCA995x class ******************************************/
64
65PCA995x::PCA995x( uint8_t n_ch, uint8_t PWM_r, uint8_t IREF_r, uint8_t IREFALL_r, const uint8_t* ar, uint8_t oe ) :
66 LEDDriver( n_ch, PWM_r, oe ), reg_IREF( IREF_r ), reg_IREFALL( IREFALL_r ), arp( ar )
67{
68 // do nothing.
69 // leave it in default state.
70}
71
72PCA995x::~PCA995x()
73{
74}
75
76void PCA995x::begin( float current, board env, bool bflag )
77{
78 init( current );
79
80 if ( env ) {
81 pinMode( oe_pin, OUTPUT );
82 digitalWrite( oe_pin , 0 );
83 }
84
85 buffer_enable( bflag );
86}
87
88void PCA995x::irefall( uint8_t iref )
89{
90 reg_access( reg_IREFALL, iref );
91}
92
93
94
95/* PCA995x_I2C class ******************************************/
96
97PCA995x_I2C::PCA995x_I2C( uint8_t i2c_address, uint8_t n_ch, uint8_t PWM_r, uint8_t IREF_r, uint8_t IREFALL_r, const uint8_t* ar, uint8_t oe ) :
98 PCA995x( n_ch, PWM_r, IREF_r, IREFALL_r, ar, oe ),
99 I2C_device( i2c_address )
100{
101}
102
103PCA995x_I2C::PCA995x_I2C( TwoWire& wire, uint8_t i2c_address, uint8_t n_ch, uint8_t PWM_r, uint8_t IREF_r, uint8_t IREFALL_r, const uint8_t* ar, uint8_t oe ) :
104 PCA995x( n_ch, PWM_r, IREF_r, IREFALL_r, ar, oe ),
105 I2C_device( wire, i2c_address )
106{
107}
108
109PCA995x_I2C::~PCA995x_I2C()
110{
111}
112
113void PCA995x_I2C::reg_access( uint8_t reg, uint8_t val )
114{
115 write_r8( reg, val );
116}
117
118void PCA995x_I2C::reg_access( uint8_t reg, uint8_t *vp, int len )
119{
120 reg_w( 0x80 | reg, vp, len );
121}
122
123uint8_t PCA995x_I2C::reg_access( uint8_t reg )
124{
125 return read_r8( reg );
126}
127
128void PCA995x_I2C::reg_access_r( uint8_t reg, uint8_t *vp, int len )
129{
130 reg_r( 0x80 | reg, vp, len );
131}
132
133
134
135/* PCA995x_SPI class ******************************************/
136
137PCA995x_SPI::PCA995x_SPI( uint8_t n_ch, uint8_t PWM_r, uint8_t IREF_r, uint8_t IREFALL_r, const uint8_t* ar, uint8_t oe ) :
138 PCA995x( n_ch, PWM_r, IREF_r, IREFALL_r, ar, oe )
139{
140 // do nothing.
141 // leave it in default state.
142}
143
144PCA995x_SPI::~PCA995x_SPI()
145{
146}
147
148void PCA995x_SPI::txrx( uint8_t *data, int size )
149{
150 digitalWrite( SS, LOW );
151 SPI.transfer( data, size );
152 digitalWrite( SS, HIGH );
153}
154
155void PCA995x_SPI::reg_access( uint8_t reg, uint8_t val )
156{
157 uint8_t data[] = { (uint8_t)(reg << 1), val };
158
159 txrx( data, sizeof( data ) );
160}
161
162void PCA995x_SPI::reg_access( uint8_t reg, uint8_t *vp, int len )
163{
164 uint8_t data[ len * 2 ];
165
166 for ( int i = 0; i < len; i++ ) {
167 data[ i * 2 + 0 ] = (reg << 1) + (i * 2);
168 data[ i * 2 + 1 ] = vp[ i ];
169 }
170
171 for ( int i = 0; i < len * 2; i += 2 )
172 txrx( data + i, 2 );
173}
174
175uint8_t PCA995x_SPI::reg_access( uint8_t reg )
176{
177 uint8_t data0[ 2 ] = { (uint8_t)((reg << 1) | 0x01), 0xFF };
178 uint8_t data1[ 2 ] = { 0xFF, 0xFF };
179
180 txrx( data0, sizeof( data0 ) );
181 txrx( data1, sizeof( data1 ) );
182
183 return data1[ 1 ];
184}
185
186void PCA995x_SPI::reg_access_r( uint8_t reg, uint8_t *vp, int len )
187{
188 for ( int i = 0; i < len; i++ ) {
189 *vp++ = reg_access( reg + i );
190 }
191}
192
193void PCA995x_SPI::reg_w( uint8_t reg, uint8_t val )
194{
195 reg_access( reg, val );
196}
197
198void PCA995x_SPI::reg_w( uint8_t reg, uint8_t *vp, int len )
199{
200 reg_access( reg, vp, len );
201}
202
203uint8_t PCA995x_SPI::reg_r( uint8_t reg )
204{
205 return reg_access( reg );
206}
207
208void PCA995x_SPI::reg_r( uint8_t reg, uint8_t *vp, int len )
209{
210 reg_access_r( reg, vp, len );
211}
212
213void PCA995x_SPI::write_r8( uint8_t reg, uint8_t val )
214{
215 reg_w( reg, val );
216}
217
218uint8_t PCA995x_SPI::read_r8( uint8_t reg )
219{
220 return reg_r( reg );
221}
222
223void PCA995x_SPI::irefall( uint8_t iref )
224{
225 write_r8( reg_IREFALL, iref );
226}
227
228void PCA995x_SPI::pwm( uint8_t ch, float value )
229{
230 write_r8( reg_PWM + ch, (uint8_t)(value * 255.0) );
231}
232
233void PCA995x_SPI::pwm( float* values )
234{
235 uint8_t v[ n_channel ];
236 for ( int i = 0; i < n_channel; i++ )
237 v[ i ] = (uint8_t)(values[ i ] * 255.0);
238
239 reg_w( reg_PWM, v, n_channel );
240}
void pwm(uint8_t ch, float value)
Definition: LEDDriver.cpp:16
void buffer_enable(bool flag)
Definition: LEDDriver.cpp:47
void flush(void)
Definition: LEDDriver.cpp:41
void irefall(uint8_t iref)
Definition: LEDDriver.cpp:223
void irefall(uint8_t iref)
Definition: LEDDriver.cpp:88