Tedd OKANO / SC18IS606

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Dependents:   SC18IS606_Hello SC18IS606_EEPROM_access_test SC18IS606_OS6_Hello

SC18IS606.cpp@2:4e64923032ad, 2021-07-14 (annotated)

Committer:
okano
Date:
Wed Jul 14 03:00:18 2021 +0000
Revision:
2:4e64923032ad
Parent:
1:b44f801ac9f2
Child:
3:47f1f22747cc
buffer write/read splitted

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 1:b44f801ac9f2 35 return 0; // dummy
okano 1:b44f801ac9f2 36 }
okano 1:b44f801ac9f2 37
okano 2:4e64923032ad 38 int SC18IS606::transfer( int slave_select_num, char *send_data_ptr, int length )
okano 1:b44f801ac9f2 39 {
okano 1:b44f801ac9f2 40 char *p;
okano 1:b44f801ac9f2 41 p = new char[ length + 1 ];
okano 1:b44f801ac9f2 42
okano 2:4e64923032ad 43 *p = SPI_read_and_write | (0x1 << slave_select_num);
okano 1:b44f801ac9f2 44 memcpy( p + 1, send_data_ptr, length );
okano 1:b44f801ac9f2 45 i2c.write( device_address, p, length + 1 );
okano 1:b44f801ac9f2 46 delete[] p;
okano 2:4e64923032ad 47
okano 2:4e64923032ad 48 return 0; // dummy
okano 2:4e64923032ad 49 }
okano 2:4e64923032ad 50
okano 2:4e64923032ad 51 int SC18IS606::read_buffer( char *receive_data_ptr, int length )
okano 2:4e64923032ad 52 {
okano 1:b44f801ac9f2 53 if ( receive_data_ptr )
okano 1:b44f801ac9f2 54 i2c.read( device_address, receive_data_ptr, length );
okano 1:b44f801ac9f2 55
okano 1:b44f801ac9f2 56 return 0; // dummy
okano 1:b44f801ac9f2 57 }
okano 1:b44f801ac9f2 58
okano 1:b44f801ac9f2 59 int SC18IS606::config( FunctionID fid, char data )
okano 1:b44f801ac9f2 60 {
okano 1:b44f801ac9f2 61 char s[ 2 ];
okano 1:b44f801ac9f2 62 s[ 0 ] = fid;
okano 1:b44f801ac9f2 63 s[ 1 ] = data;
okano 1:b44f801ac9f2 64 i2c.write( device_address, s, sizeof( s ) );
okano 1:b44f801ac9f2 65
okano 1:b44f801ac9f2 66 return 0; // dummy
okano 1:b44f801ac9f2 67 }
okano 1:b44f801ac9f2 68
okano 1:b44f801ac9f2 69 int SC18IS606::clear_interrupt( void )
okano 1:b44f801ac9f2 70 {
okano 1:b44f801ac9f2 71 char c = Clear_Interrupt;
okano 1:b44f801ac9f2 72 i2c.write( device_address, &c, sizeof( c ) );
okano 1:b44f801ac9f2 73
okano 1:b44f801ac9f2 74 return 0; // dummy
okano 1:b44f801ac9f2 75 }
okano 2:4e64923032ad 76
okano 2:4e64923032ad 77 #if 0
okano 2:4e64923032ad 78 void SC18IS606::wait_transfer_done( void )
okano 2:4e64923032ad 79 {
okano 2:4e64923032ad 80 char func_id = 0x01;
okano 2:4e64923032ad 81 while ( i2c.write( device_address, &func_id, 1 ) )
okano 2:4e64923032ad 82 ;
okano 2:4e64923032ad 83 }
okano 2:4e64923032ad 84 #endif