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Add some sanity checking to Aura device detection. Aura devices appear to read incrementing values at 0xA0 if no register written

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This commit is contained in:
Adam Honse 2019-02-25 22:06:46 -06:00
parent 0941f25a8d
commit dc3009bcaf
1 changed files with 38 additions and 6 deletions
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44
OpenAuraSDK/OpenAuraSDK.cpp
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@ -197,6 +197,42 @@ void DetectI2CBusses()
#endif /* WIN32 */
/******************************************************************************************\
* *
* TestForAuraController *
* *
* Tests the given address to see if an Aura controller exists there. First does a *
* quick write to test for a response, and if so does a simple read at 0xA0 to test *
* for incrementing values 0...F which was observed at this location during data dump *
* *
\******************************************************************************************/
bool TestForAuraController(i2c_smbus_interface* bus, unsigned char address)
{
bool pass = false;
int res = bus->i2c_smbus_write_quick(address, I2C_SMBUS_WRITE);
if (res >= 0)
{
pass = true;
for (int i = 0xA0; i < 0xB0; i++)
{
res = bus->i2c_smbus_read_byte_data(address, i);
if (res != (i - 0xA0))
{
pass = false;
}
}
}
return(pass);
} /* TestForAuraController() */
/******************************************************************************************\
* *
* DetectAuraControllers *
@ -236,9 +272,7 @@ void DetectAuraControllers()
// Add Aura-enabled controllers at their remapped addresses
for (unsigned int slot = 0; slot < 8; slot++)
{
int res = busses[bus]->i2c_smbus_write_quick(0x70 + slot, I2C_SMBUS_WRITE);
if (res >= 0)
if (TestForAuraController(busses[bus], 0x70 + slot))
{
new_controller = new AuraController(busses[bus], 0x70 + slot);
controllers.push_back(new_controller);
@ -246,9 +280,7 @@ void DetectAuraControllers()
}
// Check for Aura controller at 0x4E
int res = busses[bus]->i2c_smbus_write_quick(0x4E, I2C_SMBUS_WRITE);
if (res >= 0)
if (TestForAuraController(busses[bus], 0x4E))
{
new_controller = new AuraController(busses[bus], 0x4E);
controllers.push_back(new_controller);