RISCV_picorv32_fpga/sw/firmware/inch.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);
}