unleashed-firmware/core/tty_uart.c

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#define _GNU_SOURCE
#include <stdio.h>
#include "furi.h"
#include "main.h"
extern UART_HandleTypeDef DEBUG_UART;
void handle_uart_write(const void* data, size_t size, void* ctx) {
HAL_UART_Transmit(&DEBUG_UART, (uint8_t*)data, (uint16_t)size, HAL_MAX_DELAY);
}
static ssize_t stdout_write(void* _cookie, const char* buf, size_t n) {
FuriRecordSubscriber* log = pvTaskGetThreadLocalStoragePointer(NULL, 0);
if(log == NULL) {
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log = furi_open("tty", false, false, NULL, NULL, NULL);
if(log == NULL) {
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return -1;
}
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vTaskSetThreadLocalStoragePointer(NULL, 0, log);
}
if(buf == 0) {
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/*
* This means that we should flush internal buffers. Since we
* don't we just return. (Remember, "handle" == -1 means that all
* handles should be flushed.)
*/
return 0;
}
furi_write(log, buf, n);
return n;
}
bool register_tty_uart() {
if(!furi_create("tty", NULL, 0)) {
return false;
}
if(furi_open("tty", false, false, handle_uart_write, NULL, NULL) == NULL) {
return false;
}
FILE* fp = fopencookie(NULL,
"w",
(cookie_io_functions_t){
.read = NULL,
.write = stdout_write,
.seek = NULL,
.close = NULL,
});
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setvbuf(fp, NULL, _IONBF, 0);
stdout = fp;
return true;
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}