Marc Bax / Mbed 2 deprecated Flexbook180111a

Error as described in MBs email to MS

Dependencies:   SDFileSystem app epson mbed msp430 pl tests

mcp23s17.cpp@1:5874c1a074a7, 2018-01-11 (annotated)

Committer:
marcbax
Date:
Thu Jan 11 14:12:00 2018 +0000
Revision:
1:5874c1a074a7
Parent:
0:c643d398cdb6 
Version 180111a with error as reported to Mark Symonds

Who changed what in which revision?

UserRevisionLine numberNew contents of line
marcbax 0:c643d398cdb6 1 //
marcbax 0:c643d398cdb6 2 // Filename: mcp23s17.cpp
marcbax 0:c643d398cdb6 3 //
marcbax 0:c643d398cdb6 4 // Flexbook Hardware Abstraction Layer.
marcbax 0:c643d398cdb6 5 //
marcbax 0:c643d398cdb6 6
marcbax 0:c643d398cdb6 7 #include "mcp23s17.h"
marcbax 0:c643d398cdb6 8
marcbax 0:c643d398cdb6 9 namespace HAL {
marcbax 0:c643d398cdb6 10
marcbax 0:c643d398cdb6 11 MCP23S17::MCP23S17(int addressin, SPI &spiin, DigitalOut &csin)
marcbax 0:c643d398cdb6 12 : address(addressin), spi(spiin), cs(csin)
marcbax 0:c643d398cdb6 13 {
marcbax 0:c643d398cdb6 14 spi.format(8, 1);
marcbax 0:c643d398cdb6 15 }
marcbax 0:c643d398cdb6 16
marcbax 0:c643d398cdb6 17 int MCP23S17::Read(REG_MCP23S17 reg)
marcbax 0:c643d398cdb6 18 {
marcbax 0:c643d398cdb6 19 cs = 0;
marcbax 0:c643d398cdb6 20 spi.write(address | 0x41);
marcbax 0:c643d398cdb6 21 spi.write(reg);
marcbax 0:c643d398cdb6 22 int data = spi.write(0x00); // Write dummy value to read.
marcbax 0:c643d398cdb6 23 cs = 1;
marcbax 0:c643d398cdb6 24
marcbax 0:c643d398cdb6 25 return data;
marcbax 0:c643d398cdb6 26 }
marcbax 0:c643d398cdb6 27
marcbax 0:c643d398cdb6 28 void MCP23S17::Write(REG_MCP23S17 reg, int value)
marcbax 0:c643d398cdb6 29 {
marcbax 0:c643d398cdb6 30 cs = 0;
marcbax 0:c643d398cdb6 31 spi.write(address | 0x40);
marcbax 0:c643d398cdb6 32 spi.write(reg);
marcbax 0:c643d398cdb6 33 spi.write(value);
marcbax 0:c643d398cdb6 34 cs = 1;
marcbax 0:c643d398cdb6 35 }
marcbax 0:c643d398cdb6 36
marcbax 0:c643d398cdb6 37 } // End HAL namespace.
marcbax 0:c643d398cdb6 38