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/* SPDX-License-Identifier: copyleft-next-0.3.1 */
#include <triscv/uart.h>
#include <utf9.h>
struct uart {
/* guess this doesn't need much for now, at least until I add some state
* stuff to it */
};
struct uart *uart_create()
{
return calloc(1, sizeof(struct uart));
}
void uart_destroy(struct uart *uart)
{
free(uart);
}
static void uart_write1(struct cpu *cpu, struct uart *uart, pm_t addr, tri_t t)
{
(void)cpu;
(void)uart;
(void)addr;
#define U8_LEN 16
uint8_t u8[U8_LEN] = {0};
size_t u9_read = 0;
size_t l = utf9_to_utf8(u8, U8_LEN, &t, 1, &u9_read);
for (size_t i = 0; i < l; ++i)
putchar(u8[i]);
}
struct dev uart_dev(struct uart *uart)
{
return (struct dev){
.dev = uart,
.size = 1,
.write1 = (dev_write1_t)uart_write1,
.write3 = NULL, /* illegal */
.read1 = NULL, /* not supported for now */
.read3 = NULL
};
}
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