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Pass data to a lower-layer module
static int output( input_module_t *pModule,
void *ptr,
int num );
This function is used to pass data to a lower-layer module.
It's called by an
output module at arbitrary points in execution.
This function should:
- Read num elements of data from ptr and
send it to an external device.
Or
- Call the next lower layer's output() callback.
EOK
See device/uart.c.
Your code
Safety: | |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
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