diff options
Diffstat (limited to 'tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.cpp')
-rw-r--r-- | tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.cpp b/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.cpp new file mode 100644 index 0000000000..5fc6e8568e --- /dev/null +++ b/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.cpp @@ -0,0 +1,43 @@ +/* mbed Microcontroller Library - SPIHalfDuplex + * Copyright (c) 2010-2011 ARM Limited. All rights reserved. + */ +#include "SPIHalfDuplex.h" + +#if DEVICE_SPI + +#include "spi_api.h" +#include "pinmap.h" + +#define GPIO_MODE 0 +#define SPI_MODE 2 + +namespace mbed { + +SPIHalfDuplex::SPIHalfDuplex(PinName mosi, PinName miso, PinName sclk) : SPI(mosi, miso, sclk) { + _mosi = mosi; + _miso = miso; + _sbits = _bits; +} + +void SPIHalfDuplex::slave_format(int sbits) { + _sbits = sbits; +} + +int SPIHalfDuplex::write(int value) { + int t_bits = _bits; + pin_function(_mosi, SPI_MODE); + int ret_val = SPI::write(value); + if (ret_val != value) { + return -1; + } + format(_sbits, _mode); + pin_function(_mosi, GPIO_MODE); + ret_val = SPI::write(0x55); + format(t_bits, _mode); + pin_function(_mosi, SPI_MODE); + return ret_val; +} + +} // end namespace mbed + +#endif |