HAL_IICSetLines
Hardware Abstraction Layer
HAL entry points from RISC OS
» HAL_IICSetLines
HAL_IICSetLines
(HAL entry #33)
__value_in_regs IICLines HAL_IICSetLines(int bus, IICLines lines)
| Entry | |
|---|---|
| bus | Bus number to modify |
| lines | IICLines structure containing settings to apply |
| Exit | |
|---|---|
| a1-a2 | IICLines structure containing the values as read back from the bus |
Use
This is an internal call for OS use only and should not be used by user software.
Sets the SDA and SCL lines on the specified bus. A 0 value represents logic LOW, 1 logic HIGH. The function then reads back and returns the values present on the bus, to permit arbitration.
Note the “__value_in_regs” keyword, which signifies that the binary ABI expects SDA and SCL to be returned in registers a1 and a2.
See also
Information sources: Kernel.Docs.HAL.HAL_API, Kernel.Docs.HAL.MoreEnts in CVS
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.