Tedd OKANO / SC18IS606

test version 0.2

Dependents:   SC18IS606_Hello SC18IS606_EEPROM_access_test SC18IS606_OS6_Hello

SC18IS606.cpp@7:9fee975998c1, 2021-07-29 (annotated)

Committer:
okano
Date:
Thu Jul 29 01:35:53 2021 +0000
Revision:
7:9fee975998c1
Parent:
6:cfe7ec4f2b59 
added read version, GPIO read

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okano 1:b44f801ac9f2 1 /*
okano 1:b44f801ac9f2 2 * SC18IS606 library
okano 1:b44f801ac9f2 3 *
okano 1:b44f801ac9f2 4 * @author Akifumi (Tedd) OKANO, NXP Semiconductors
okano 1:b44f801ac9f2 5 * @version 0.1
okano 1:b44f801ac9f2 6 * @date 13-July-2021
okano 1:b44f801ac9f2 7 *
okano 1:b44f801ac9f2 8 * SC18IS606 is an "I2C-bus to SPI bridge"
okano 1:b44f801ac9f2 9 * http://www.nxp.com/ (product infomation page will be updated later)
okano 1:b44f801ac9f2 10 */
okano 1:b44f801ac9f2 11
okano 1:b44f801ac9f2 12 #include "mbed.h"
okano 1:b44f801ac9f2 13 #include "SC18IS606.h"
okano 1:b44f801ac9f2 14
okano 1:b44f801ac9f2 15 SC18IS606::SC18IS606( PinName sda, PinName scl, char i2c_address )
okano 1:b44f801ac9f2 16 : i2c_p( new I2C( sda, scl ) ), i2c( *i2c_p ), device_address( i2c_address )
okano 1:b44f801ac9f2 17 {
okano 1:b44f801ac9f2 18 init();
okano 1:b44f801ac9f2 19 }
okano 1:b44f801ac9f2 20
okano 1:b44f801ac9f2 21 SC18IS606::SC18IS606( I2C &i2c_, char i2c_address )
okano 1:b44f801ac9f2 22 : i2c_p( NULL ), i2c( i2c_ ), device_address( i2c_address )
okano 1:b44f801ac9f2 23 {
okano 1:b44f801ac9f2 24 init();
okano 1:b44f801ac9f2 25 }
okano 1:b44f801ac9f2 26
okano 1:b44f801ac9f2 27 SC18IS606::~SC18IS606()
okano 1:b44f801ac9f2 28 {
okano 1:b44f801ac9f2 29 if ( NULL != i2c_p )
okano 1:b44f801ac9f2 30 delete i2c_p;
okano 1:b44f801ac9f2 31 }
okano 1:b44f801ac9f2 32
okano 1:b44f801ac9f2 33 int SC18IS606::init( void )
okano 1:b44f801ac9f2 34 {
okano 5:436b2c7854e8 35 int err;
okano 5:436b2c7854e8 36
okano 4:ac0aef91fd94 37 wait_transfer_completion = NULL;
okano 5:436b2c7854e8 38 err = clear_interrupt();
okano 4:ac0aef91fd94 39
okano 5:436b2c7854e8 40 return err;
okano 1:b44f801ac9f2 41 }
okano 1:b44f801ac9f2 42
okano 2:4e64923032ad 43 int SC18IS606::transfer( int slave_select_num, char *send_data_ptr, int length )
okano 1:b44f801ac9f2 44 {
okano 1:b44f801ac9f2 45 char *p;
okano 5:436b2c7854e8 46 int err;
okano 5:436b2c7854e8 47
okano 1:b44f801ac9f2 48 p = new char[ length + 1 ];
okano 1:b44f801ac9f2 49
okano 2:4e64923032ad 50 *p = SPI_read_and_write | (0x1 << slave_select_num);
okano 1:b44f801ac9f2 51 memcpy( p + 1, send_data_ptr, length );
okano 5:436b2c7854e8 52 err = i2c.write( device_address, p, length + 1 );
okano 1:b44f801ac9f2 53 delete[] p;
okano 4:ac0aef91fd94 54
okano 5:436b2c7854e8 55 if ( err )
okano 5:436b2c7854e8 56 return err;
okano 5:436b2c7854e8 57
okano 4:ac0aef91fd94 58 if ( NULL != wait_transfer_completion )
okano 4:ac0aef91fd94 59 (*wait_transfer_completion)();
okano 2:4e64923032ad 60
okano 5:436b2c7854e8 61 return err;
okano 2:4e64923032ad 62 }
okano 2:4e64923032ad 63
okano 2:4e64923032ad 64 int SC18IS606::read_buffer( char *receive_data_ptr, int length )
okano 2:4e64923032ad 65 {
okano 5:436b2c7854e8 66 int err;
okano 5:436b2c7854e8 67
okano 1:b44f801ac9f2 68 if ( receive_data_ptr )
okano 5:436b2c7854e8 69 err = i2c.read( device_address, receive_data_ptr, length );
okano 1:b44f801ac9f2 70
okano 5:436b2c7854e8 71 return err;
okano 1:b44f801ac9f2 72 }
okano 1:b44f801ac9f2 73
okano 1:b44f801ac9f2 74 int SC18IS606::config( FunctionID fid, char data )
okano 1:b44f801ac9f2 75 {
okano 1:b44f801ac9f2 76 char s[ 2 ];
okano 5:436b2c7854e8 77 int err;
okano 5:436b2c7854e8 78
okano 1:b44f801ac9f2 79 s[ 0 ] = fid;
okano 1:b44f801ac9f2 80 s[ 1 ] = data;
okano 5:436b2c7854e8 81 err = i2c.write( device_address, s, sizeof( s ) );
okano 1:b44f801ac9f2 82
okano 5:436b2c7854e8 83 return err;
okano 1:b44f801ac9f2 84 }
okano 1:b44f801ac9f2 85
okano 1:b44f801ac9f2 86 int SC18IS606::clear_interrupt( void )
okano 1:b44f801ac9f2 87 {
okano 1:b44f801ac9f2 88 char c = Clear_Interrupt;
okano 5:436b2c7854e8 89 int err;
okano 5:436b2c7854e8 90
okano 5:436b2c7854e8 91 err = i2c.write( device_address, &c, sizeof( c ) );
okano 1:b44f801ac9f2 92
okano 5:436b2c7854e8 93 return err;
okano 1:b44f801ac9f2 94 }
okano 6:cfe7ec4f2b59 95
okano 6:cfe7ec4f2b59 96 char* SC18IS606::read_version( void )
okano 6:cfe7ec4f2b59 97 {
okano 6:cfe7ec4f2b59 98 static char s[ 16 ];
okano 7:9fee975998c1 99 char func_id = Read_Version;
okano 6:cfe7ec4f2b59 100 int err;
okano 6:cfe7ec4f2b59 101
okano 6:cfe7ec4f2b59 102 err = i2c.write( device_address, &func_id, sizeof( func_id ) );
okano 6:cfe7ec4f2b59 103
okano 6:cfe7ec4f2b59 104 if ( NULL != wait_transfer_completion )
okano 6:cfe7ec4f2b59 105 (*wait_transfer_completion)();
okano 6:cfe7ec4f2b59 106
okano 6:cfe7ec4f2b59 107 err |= read_buffer( s, sizeof( s ) );
okano 6:cfe7ec4f2b59 108
okano 6:cfe7ec4f2b59 109 if ( err )
okano 6:cfe7ec4f2b59 110 s[ 0 ] = 0;
okano 6:cfe7ec4f2b59 111
okano 6:cfe7ec4f2b59 112 return s;
okano 6:cfe7ec4f2b59 113 }
okano 6:cfe7ec4f2b59 114