flipperzero-firmware/applications/examples/uart_write.c

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#include "flipper.h"
#include <string.h>
#include "log.h"
void application_uart_write(void* p) {
// Red led for showing progress
GpioPin led = {.pin = GPIO_PIN_8, .port = GPIOA};
pinMode(led, GpioModeOpenDrain);
// get_default_log open "tty" record
FuriRecordSubscriber* log = get_default_log();
// create buffer
const char test_string[] = "test\n";
furi_write(log, test_string, strlen(test_string));
// for example, create counter and show its value
uint8_t counter = 0;
while(1) {
// continously write it to UART
fuprintf(log, "counter: %d\n", counter);
counter++;
// flash at every send
digitalWrite(led, LOW);
delay(50);
digitalWrite(led, HIGH);
// delay with overall perion of 1s
delay(950);
}
}