15 lines
257 B
C
15 lines
257 B
C
|
#include "firmware.h"
|
||
|
|
|
||
|
|
#define DATA_PORT 0xffff0020
|
||
|
|
#define STATUS_PORT 0xffff0024
|
||
|
|
|
||
|
|
char inch(void)
|
||
|
|
{
|
||
|
|
while (*((volatile uint32_t*)STATUS_PORT) == 0 )
|
||
|
|
{
|
||
|
|
// Spin waiting for UART Rx full.
|
||
|
|
}
|
||
|
|
return *((volatile uint32_t*)DATA_PORT);
|
||
|
|
}
|
||
|
|
|