31 lines
632 B
C
31 lines
632 B
C
#include <stdint.h>
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#include "../include/uart.h"
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#include "../include/xprintf.h"
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// send one char to uart
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void uart0_putc(uint8_t c)
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{
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while (UART0_REG(UART_STATUS_REG_OFFSET) & (1 << UART_STATUS_TXFULL_BIT));
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UART0_REG(UART_TXDATA_REG_OFFSET) = c;
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}
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// Block, get one char from uart.
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uint8_t uart0_getc()
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{
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while ((UART0_REG(UART_STATUS_REG_OFFSET) & (1 << UART_STATUS_RXEMPTY_BIT)));
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return (UART0_REG(UART_RXDATA_REG_OFFSET) & 0xff);
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}
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// 115200bps, 8 N 1
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void uart0_init(myputc put)
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{
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// enable tx and rx
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UART0_REG(UART_CTRL_REG_OFFSET) |= 0x3;
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xdev_out(put);
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}
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