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Linux: Added device simulator to simulate an I2C or SPI device

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The simulated device satisfies the factory pattern used by
MS5611 to create a specific I2C or SPI device instance.

For now the functions just return true, but should/could
return simulated data.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>
This commit is contained in:
Mark Charlebois
2015-04-20 11:35:47 -07:00
parent 4780353cd8
commit 76a6f19476
9 changed files with 457 additions and 22 deletions
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src/drivers/device/vdev.h
+7 -7
View File
@@ -71,10 +71,9 @@ struct px4_dev_handle_t {
};
/**
* Fundamental base class for all device drivers.
* Fundamental base class for all physical drivers (I2C, SPI).
*
* This class handles the basic "being a driver" things, including
* interrupt registration and dispatch.
* This class provides the basic driver template for I2C and SPI devices
*/
class __EXPORT Device
{
@@ -107,7 +106,7 @@ public:
* @param count The number of items to read.
* @return The number of items read on success, negative errno otherwise.
*/
int dev_read(unsigned address, void *data, unsigned count);
virtual int dev_read(unsigned address, void *data, unsigned count);
/**
* Write directly to the device.
@@ -119,7 +118,7 @@ public:
* @param count The number of items to write.
* @return The number of items written on success, negative errno otherwise.
*/
int dev_write(unsigned address, void *data, unsigned count);
virtual int dev_write(unsigned address, void *data, unsigned count);
/**
* Perform a device-specific operation.
@@ -128,7 +127,7 @@ public:
* @param arg An argument to the operation.
* @return Negative errno on error, OK or positive value on success.
*/
int dev_ioctl(unsigned operation, unsigned &arg);
virtual int dev_ioctl(unsigned operation, unsigned &arg);
/*
device bus types for DEVID
@@ -138,6 +137,7 @@ public:
DeviceBusType_I2C = 1,
DeviceBusType_SPI = 2,
DeviceBusType_UAVCAN = 3,
DeviceBusType_SIM = 4,
};
/*
@@ -452,7 +452,7 @@ private:
/* do not allow copying this class */
VDev(const VDev&);
VDev operator=(const VDev&);
//VDev operator=(const VDev&);
};
#if 0