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author | Jun Wako <wakojun@gmail.com> | 2015-04-24 16:26:14 +0900 |
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committer | Jun Wako <wakojun@gmail.com> | 2015-04-24 16:26:14 +0900 |
commit | a3d96d3aa96318d339a67de1085e0ae495d57c84 (patch) | |
tree | db85c16d03b52399d6c109eda7ea0341a0de0b1d /tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h | |
parent | 1d5bac21dc6f1425b8ef4bbe7935330c37c3a93e (diff) | |
parent | 1fe4406f374291ab2e86e95a97341fd9c475fcb8 (diff) |
Merge commit '1fe4406f374291ab2e86e95a97341fd9c475fcb8'
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h')
-rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h new file mode 100644 index 0000000000..14633b8555 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/libs/SPIHalfDuplex/SPIHalfDuplex.h @@ -0,0 +1,85 @@ +/* mbed Microcontroller Library - SPIHalfDuplex + * Copyright (c) 2010-2011 ARM Limited. All rights reserved. + */ +#ifndef MBED_SPIHALFDUPLEX_H +#define MBED_SPIHALFDUPLEX_H + +#include "platform.h" + +#if DEVICE_SPI + +#include "SPI.h" + +namespace mbed { + +/** A SPI half-duplex master, used for communicating with SPI slave devices + * over a shared data line. + * + * The default format is set to 8-bits for both master and slave, and a + * clock frequency of 1MHz + * + * Most SPI devies will also require Chip Select and Reset signals. These + * can be controlled using <DigitalOut> pins. + * + * Although this is for a shared data line, both MISO and MOSI are defined, + * and should be tied together externally to the mbed. This class handles + * the tri-stating of the MOSI pin. + * + * Example: + * @code + * // Send a byte to a SPI half-duplex slave, and record the response + * + * #include "mbed.h" + * + * SPIHalfDuplex device(p5, p6, p7) // mosi, miso, sclk + * + * int main() { + * int respone = device.write(0xAA); + * } + * @endcode + */ + +class SPIHalfDuplex : public SPI { + +public: + + /** Create a SPI half-duplex master connected to the specified pins + * + * Pin Options: + * (5, 6, 7) or (11, 12, 13) + * + * mosi or miso can be specfied as NC if not used + * + * @param mosi SPI Master Out, Slave In pin + * @param miso SPI Master In, Slave Out pin + * @param sclk SPI Clock pin + * @param name (optional) A string to identify the object + */ + SPIHalfDuplex(PinName mosi, PinName miso, PinName sclk); + + /** Write to the SPI Slave and return the response + * + * @param value Data to be sent to the SPI slave + * + * @returns + * Response from the SPI slave + */ + virtual int write(int value); + + /** Set the number of databits expected from the slave, from 4-16 + * + * @param sbits Number of expected bits in the slave response + */ + void slave_format(int sbits); + +protected: + PinName _mosi; + PinName _miso; + int _sbits; +}; // End of class + +} // End of namespace mbed + +#endif + +#endif |