rpi-open-firmware/arm_chainloader/drivers/uart.c
2016-05-16 03:01:46 +01:00

11 lines
170 B
C
Executable File

#include <hardware.h>
void uart_putc(unsigned int ch)
{
while(1) {
if (mmio_read32(AUX_MU_LSR_REG) & 0x20)
break;
}
mmio_write32(AUX_MU_IO_REG, ch);
}