30 lines
562 B
C
30 lines
562 B
C
#include "uart.h"
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int uart_rx_available(struct uart* uart) {
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return uart->flags & UART_STATUS_RXNE_msk != 0;
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}
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int uart_tx_available(struct uart* uart) {
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return uart->flags & UART_STATUS_TXE_msk != 0;
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}
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void uart_write(struct uart* uart, const char c) {
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while (!uart_tx_available(uart)) {
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}
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uart->data = c;
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}
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char uart_read(struct uart* uart) {
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while (!uart_rx_available(uart)) {
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}
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return uart->data;
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}
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void uart_writen(struct uart* uart, const char* data, int len) {
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for (int i = 0; i < len; ++i) {
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uart_write(uart, data[i]);
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}
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}
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