HAL_DebugRX
Hardware Abstraction Layer
HAL entry points from RISC OS
» HAL_DebugRX
HAL_DebugRX
(HAL entry #85)
int HAL_DebugRX(void)
| Entry | |
|---|---|
| - |
| Exit | |
|---|---|
| - | Returns character read, or -1 if none available |
Use
Attempts to read a byte from the HAL’s debug terminal (e.g. serial port). If no byte is immediately available, -1 should be returned. If the HAL has been compiled with debugging disabled, -1 should be returned.
This is an internal call for OS use only, and its specifications are subject to change without warning. User software requiring the use of low-level debug input/output should prefer to use the function pointers returned by OS_ReadSysInfo 11, as their specification is fixed.
Information source: HAL.Tungsten.s.Debug in CVS
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