Sets a DMA region to be read at lock.
a0tError | a0SetLockRead( | | | |
| | a0tLock | *lock, | |
| | int | index, | |
| | a0tFormat | *format, | |
| | void | *address, | |
| | int | count );
| |
| Name | rd/wr | Description |
| lock | write | Lock descriptor table to be set. |
| index | read | Index in the table. |
| address | write | Address of the data to receive. |
| count | read | Number of elements of the data to receive. |
This function sets the lock lock[index] to read the locked DMA region at the moment of the lock. The data received locally will be treated as count elements of the format and will be stored starting at address. This function allows the system to use the same message to set the lock and to read its related data.
This function must be called after a0SetLockDMARegionPart() or a0SetLockDMARegion() and before a0Lock() or a0ILock().
On return of this function, the variable pointed by lock contains a lock descriptor to read the given data.
| Error Code | Description |
A0ErrOk| Successful completion. | |
a0SetLockDMARegion() a0SetLockDMARegionPart() a0SetUnlockWrite() a0Lock() a0Unlock()