CALIBRE
3.3.18.BlockSlaveReceiverStatus
Function specification | int BlockSlaveReceiverStatus (void)) | |
Parameters are: | None |
|
Parameters returned | int TransferStatus. | |
| Returns 0 if the no data has been received. | |
| Returns the a status if the transfer is completed (see below). | |
| Bit 0 | Not Used |
| Bit 1 | Not Used |
| Bit 2 | Not Used |
| Bit 3 | Not Used |
| Bit 4 | Stop detected |
| Bit 5 Set if the transfer timeout (Value in Setup function) occurred | |
| Returns 900DH if the expected number of bytes is exceeded | |
| Returns 900CH if the transfer time out. | |
Prerequisites | Adapter must be configured using Setup. The transfer must be started using | |
| the BlockSlaveReceiver function. | |
Functional description | Returns the current status of the BlockSlaveReceiver transfer NOTE this | |
| function will time out the BlockSlaveReceiver function. | |
Read two bytes of data from the Adapter using GetBlockData to determine how many bytes of data the master read from the slave.
Read the first two bytes to determine how many bytes of data the master read from the slave (high byte first), read 1 byte to determine the status.
3.3.19.CheckBusVoltage
Function specification | int CheckBusVoltage (void)) |
Parameters are: | None |
Parameters returned | int BusVoltage |
| Returns the I2C bus output voltage multiplied by 100. |
| Returns 0x800C if the transfer timed out. |
Prerequisites | Adapter should be configured using Setup. If this is not done the I2C bus |
| voltage will default to 3.3V. |
Functional description | Returns the current bus voltage multiplied by 100 as measured on pin 7 of the |
| output socket. For example, will return 330 for a 3.3V bus voltage , 500 for a |
| 5.0V bus voltage and 200 for a 2.0V bus voltage. |
3.3.20.CheckPullupVoltage
Function specification | int CheckPullupVoltage (void)) |
Parameters are: | None |
Parameters returned | int PullupVoltage |
| Returns the I2C pullup voltage multiplied by 100 measured upstream of the |
| output overcurrent protection device. |
| Returns 0x800C if the transfer timed out. |
Prerequisites | Adapter should be configured using Setup. If this is not done the I2C bus |
| voltage will default to 3.3V. |
Functional description | The pullup voltage is the same as the I2C output voltage but measured |
| upstream of the resettable polyfuse protection device. Returns the current |
| pullup voltage multiplied by 100. For example, will return 330 for a 3.3V pullup |
| voltage , 500 for a 5.0V pullup voltage and 200 for a 2.0V pullup voltage. If the |
| pullup voltage differs from the bus voltage (measured by the previous function) |
| by more than a few tens of millivolts then too much current is being drawn from |
| the Adapter. No more than 250mA should be drawn from the Adapter. |
Issue 1.0 | Page 13 |
01/07/03 |
|