InetrfaceProducts NXP / PCA962x

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Dependencies:   CompLedDvr

Dependents:   PCA9626_Hello PCA9624_Hello PCA9622_Hello

base_class/PCA962x.cpp@0:7a206e6db594, 2015-02-26 (annotated)

Committer:
nxp_ip
Date:
Thu Feb 26 09:16:41 2015 +0000
Revision:
0:7a206e6db594
Initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxp_ip 0:7a206e6db594 1 #include "mbed.h"
nxp_ip 0:7a206e6db594 2 #include "PCA962x.h"
nxp_ip 0:7a206e6db594 3
nxp_ip 0:7a206e6db594 4 PCA962x::PCA962x( PinName i2c_sda, PinName i2c_scl, char i2c_address )
nxp_ip 0:7a206e6db594 5 : i2c_p( new I2C( i2c_sda, i2c_scl ) ), i2c( *i2c_p ), address( i2c_address )
nxp_ip 0:7a206e6db594 6 {
nxp_ip 0:7a206e6db594 7 }
nxp_ip 0:7a206e6db594 8
nxp_ip 0:7a206e6db594 9 PCA962x::PCA962x( I2C &i2c_, char i2c_address )
nxp_ip 0:7a206e6db594 10 : i2c_p( NULL ), i2c( i2c_ ), address( i2c_address )
nxp_ip 0:7a206e6db594 11 {
nxp_ip 0:7a206e6db594 12 }
nxp_ip 0:7a206e6db594 13
nxp_ip 0:7a206e6db594 14 PCA962x::~PCA962x()
nxp_ip 0:7a206e6db594 15 {
nxp_ip 0:7a206e6db594 16 if ( NULL != i2c_p )
nxp_ip 0:7a206e6db594 17 delete i2c_p;
nxp_ip 0:7a206e6db594 18 }
nxp_ip 0:7a206e6db594 19
nxp_ip 0:7a206e6db594 20 void PCA962x::reset( void )
nxp_ip 0:7a206e6db594 21 {
nxp_ip 0:7a206e6db594 22 char va[] = { 0xA5, 0x5A };
nxp_ip 0:7a206e6db594 23 i2c.write( 0x06, va, sizeof( va ) );
nxp_ip 0:7a206e6db594 24 }
nxp_ip 0:7a206e6db594 25
nxp_ip 0:7a206e6db594 26 void PCA962x::pwm( int port, float v )
nxp_ip 0:7a206e6db594 27 {
nxp_ip 0:7a206e6db594 28 char reg_addr;
nxp_ip 0:7a206e6db594 29
nxp_ip 0:7a206e6db594 30 reg_addr = pwm_register_access( port );
nxp_ip 0:7a206e6db594 31
nxp_ip 0:7a206e6db594 32 if ( PWMALL == reg_addr ) {
nxp_ip 0:7a206e6db594 33 int np = number_of_ports();
nxp_ip 0:7a206e6db594 34 float va[ np ];
nxp_ip 0:7a206e6db594 35
nxp_ip 0:7a206e6db594 36 for ( int i = 0; i < np; i++ )
nxp_ip 0:7a206e6db594 37 va[ i ] = v;
nxp_ip 0:7a206e6db594 38
nxp_ip 0:7a206e6db594 39 pwm( va );
nxp_ip 0:7a206e6db594 40
nxp_ip 0:7a206e6db594 41 } else {
nxp_ip 0:7a206e6db594 42 write( reg_addr, (char)(v * 255.0) );
nxp_ip 0:7a206e6db594 43 }
nxp_ip 0:7a206e6db594 44 }
nxp_ip 0:7a206e6db594 45
nxp_ip 0:7a206e6db594 46 void PCA962x::pwm( float *vp )
nxp_ip 0:7a206e6db594 47 {
nxp_ip 0:7a206e6db594 48 int n_of_ports = number_of_ports();
nxp_ip 0:7a206e6db594 49 char data[ n_of_ports + 1 ];
nxp_ip 0:7a206e6db594 50
nxp_ip 0:7a206e6db594 51 *data = pwm_register_access( 0 );
nxp_ip 0:7a206e6db594 52
nxp_ip 0:7a206e6db594 53 for ( int i = 1; i <= n_of_ports; i++ )
nxp_ip 0:7a206e6db594 54 data[ i ] = (char)(*vp++ * 255.0);
nxp_ip 0:7a206e6db594 55
nxp_ip 0:7a206e6db594 56 write( data, sizeof( data ) );
nxp_ip 0:7a206e6db594 57 }
nxp_ip 0:7a206e6db594 58
nxp_ip 0:7a206e6db594 59 void PCA962x::write( char *data, int length )
nxp_ip 0:7a206e6db594 60 {
nxp_ip 0:7a206e6db594 61 *data |= AUTO_INCREMENT;
nxp_ip 0:7a206e6db594 62 i2c.write( address, data, length );
nxp_ip 0:7a206e6db594 63 }
nxp_ip 0:7a206e6db594 64
nxp_ip 0:7a206e6db594 65 void PCA962x::write( char reg_addr, char data )
nxp_ip 0:7a206e6db594 66 {
nxp_ip 0:7a206e6db594 67 char c[2];
nxp_ip 0:7a206e6db594 68
nxp_ip 0:7a206e6db594 69 c[0] = reg_addr;
nxp_ip 0:7a206e6db594 70 c[1] = data;
nxp_ip 0:7a206e6db594 71
nxp_ip 0:7a206e6db594 72 i2c.write( address, c, 2 );
nxp_ip 0:7a206e6db594 73 }
nxp_ip 0:7a206e6db594 74
nxp_ip 0:7a206e6db594 75 void PCA962x::read( char reg_addr, char *data, int length )
nxp_ip 0:7a206e6db594 76 {
nxp_ip 0:7a206e6db594 77 reg_addr |= 0x80;
nxp_ip 0:7a206e6db594 78 i2c.write( address, (char *)(&reg_addr), 1, true );
nxp_ip 0:7a206e6db594 79 i2c.read( address, data, length );
nxp_ip 0:7a206e6db594 80 }
nxp_ip 0:7a206e6db594 81
nxp_ip 0:7a206e6db594 82 char PCA962x::read( char reg_addr )
nxp_ip 0:7a206e6db594 83 {
nxp_ip 0:7a206e6db594 84 i2c.write( address, (char *)(&reg_addr), 1, true );
nxp_ip 0:7a206e6db594 85 i2c.read( address, (char *)(&reg_addr), 1 );
nxp_ip 0:7a206e6db594 86
nxp_ip 0:7a206e6db594 87 return ( reg_addr );
nxp_ip 0:7a206e6db594 88 }