Thomas Butler / PCA995xA

gfdgd

Dependencies:   CompLedDvrCC

Fork of PCA995xA by InetrfaceProducts NXP

base_class/PCA995xA.cpp@7:56a45c690801, 2018-08-14 (annotated)

Committer:
tb942
Date:
Tue Aug 14 18:26:35 2018 +0000
Revision:
7:56a45c690801
Parent:
0:a624e2eeccac 
removed #include mbed.h - it's not needed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxp_ip 0:a624e2eeccac 1 #include "mbed.h"
nxp_ip 0:a624e2eeccac 2 #include "PCA995xA.h"
nxp_ip 0:a624e2eeccac 3
nxp_ip 0:a624e2eeccac 4 PCA995xA::PCA995xA( PinName i2c_sda, PinName i2c_scl, char i2c_address )
nxp_ip 0:a624e2eeccac 5 : i2c_p( new I2C( i2c_sda, i2c_scl ) ), i2c( *i2c_p ), address( i2c_address )
nxp_ip 0:a624e2eeccac 6 {
nxp_ip 0:a624e2eeccac 7 }
nxp_ip 0:a624e2eeccac 8
nxp_ip 0:a624e2eeccac 9 PCA995xA::PCA995xA( I2C &i2c_, char i2c_address )
nxp_ip 0:a624e2eeccac 10 : i2c_p( NULL ), i2c( i2c_ ), address( i2c_address )
nxp_ip 0:a624e2eeccac 11 {
nxp_ip 0:a624e2eeccac 12 }
nxp_ip 0:a624e2eeccac 13
nxp_ip 0:a624e2eeccac 14 PCA995xA::~PCA995xA()
nxp_ip 0:a624e2eeccac 15 {
nxp_ip 0:a624e2eeccac 16 if ( NULL != i2c_p )
nxp_ip 0:a624e2eeccac 17 delete i2c_p;
nxp_ip 0:a624e2eeccac 18 }
nxp_ip 0:a624e2eeccac 19
nxp_ip 0:a624e2eeccac 20 void PCA995xA::reset( void )
nxp_ip 0:a624e2eeccac 21 {
nxp_ip 0:a624e2eeccac 22 char v = 0x06;
nxp_ip 0:a624e2eeccac 23 i2c.write( 0x00, &v, 1 );
nxp_ip 0:a624e2eeccac 24 }
nxp_ip 0:a624e2eeccac 25
nxp_ip 0:a624e2eeccac 26 void PCA995xA::pwm( int port, float v )
nxp_ip 0:a624e2eeccac 27 {
nxp_ip 0:a624e2eeccac 28 char reg_addr;
nxp_ip 0:a624e2eeccac 29
nxp_ip 0:a624e2eeccac 30 reg_addr = pwm_register_access( port );
nxp_ip 0:a624e2eeccac 31 write( reg_addr, (char)(v * 255.0) );
nxp_ip 0:a624e2eeccac 32 }
nxp_ip 0:a624e2eeccac 33
nxp_ip 0:a624e2eeccac 34 void PCA995xA::pwm( float *vp )
nxp_ip 0:a624e2eeccac 35 {
nxp_ip 0:a624e2eeccac 36 int n_of_ports = number_of_ports();
nxp_ip 0:a624e2eeccac 37 char data[ n_of_ports + 1 ];
nxp_ip 0:a624e2eeccac 38
nxp_ip 0:a624e2eeccac 39 *data = pwm_register_access( 0 );
nxp_ip 0:a624e2eeccac 40
nxp_ip 0:a624e2eeccac 41 for ( int i = 1; i <= n_of_ports; i++ )
nxp_ip 0:a624e2eeccac 42 data[ i ] = (char)(*vp++ * 255.0);
nxp_ip 0:a624e2eeccac 43
nxp_ip 0:a624e2eeccac 44 write( data, sizeof( data ) );
nxp_ip 0:a624e2eeccac 45 }
nxp_ip 0:a624e2eeccac 46
nxp_ip 0:a624e2eeccac 47 void PCA995xA::current( int port, float v )
nxp_ip 0:a624e2eeccac 48 {
nxp_ip 0:a624e2eeccac 49 char reg_addr;
nxp_ip 0:a624e2eeccac 50
nxp_ip 0:a624e2eeccac 51 reg_addr = current_register_access( port );
nxp_ip 0:a624e2eeccac 52 write( reg_addr, (char)(v * 255.0) );
nxp_ip 0:a624e2eeccac 53 }
nxp_ip 0:a624e2eeccac 54
nxp_ip 0:a624e2eeccac 55 void PCA995xA::current( float *vp )
nxp_ip 0:a624e2eeccac 56 {
nxp_ip 0:a624e2eeccac 57 int n_of_ports = number_of_ports();
nxp_ip 0:a624e2eeccac 58 char data[ n_of_ports + 1 ];
nxp_ip 0:a624e2eeccac 59
nxp_ip 0:a624e2eeccac 60 *data = pwm_register_access( 0 );
nxp_ip 0:a624e2eeccac 61
nxp_ip 0:a624e2eeccac 62 for ( int i = 1; i <= n_of_ports; i++ )
nxp_ip 0:a624e2eeccac 63 data[ i ] = (char)(*vp++ * 255.0);
nxp_ip 0:a624e2eeccac 64
nxp_ip 0:a624e2eeccac 65 write( data, sizeof( data ) );
nxp_ip 0:a624e2eeccac 66 }
nxp_ip 0:a624e2eeccac 67
nxp_ip 0:a624e2eeccac 68 void PCA995xA::write( char *data, int length )
nxp_ip 0:a624e2eeccac 69 {
nxp_ip 0:a624e2eeccac 70 *data |= AUTO_INCREMENT;
nxp_ip 0:a624e2eeccac 71 i2c.write( address, data, length );
nxp_ip 0:a624e2eeccac 72 }
nxp_ip 0:a624e2eeccac 73
nxp_ip 0:a624e2eeccac 74 void PCA995xA::write( char reg_addr, char data )
nxp_ip 0:a624e2eeccac 75 {
nxp_ip 0:a624e2eeccac 76 char c[2];
nxp_ip 0:a624e2eeccac 77
nxp_ip 0:a624e2eeccac 78 c[0] = reg_addr;
nxp_ip 0:a624e2eeccac 79 c[1] = data;
nxp_ip 0:a624e2eeccac 80
nxp_ip 0:a624e2eeccac 81 i2c.write( address, c, 2 );
nxp_ip 0:a624e2eeccac 82 }
nxp_ip 0:a624e2eeccac 83
nxp_ip 0:a624e2eeccac 84 void PCA995xA::read( char reg_addr, char *data, int length )
nxp_ip 0:a624e2eeccac 85 {
nxp_ip 0:a624e2eeccac 86 reg_addr |= 0x80;
nxp_ip 0:a624e2eeccac 87 i2c.write( address, (char *)(&reg_addr), 1, true );
nxp_ip 0:a624e2eeccac 88 i2c.read( address, data, length );
nxp_ip 0:a624e2eeccac 89 }
nxp_ip 0:a624e2eeccac 90
nxp_ip 0:a624e2eeccac 91 char PCA995xA::read( char reg_addr )
nxp_ip 0:a624e2eeccac 92 {
nxp_ip 0:a624e2eeccac 93 i2c.write( address, (char *)(&reg_addr), 1, true );
nxp_ip 0:a624e2eeccac 94 i2c.read( address, (char *)(&reg_addr), 1 );
nxp_ip 0:a624e2eeccac 95
nxp_ip 0:a624e2eeccac 96 return ( reg_addr );
nxp_ip 0:a624e2eeccac 97 }