89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
// main.cpp
|
|
|
|
#include "mbed.h"
|
|
|
|
#define TARGET_TX_PIN USBTX
|
|
#define TARGET_RX_PIN USBRX
|
|
#define BAUD_RATE 115200
|
|
|
|
static BufferedSerial serial_port(TARGET_TX_PIN, TARGET_RX_PIN, BAUD_RATE);
|
|
|
|
FileHandle *mbed::mbed_override_console(int fd)
|
|
{
|
|
return &serial_port;
|
|
}
|
|
|
|
DigitalOut led(LED1);
|
|
|
|
#define BUFFER_SIZE 64
|
|
static char rx_buffer[BUFFER_SIZE];
|
|
|
|
// Draw shifting mask with optional centered text
|
|
void draw_mask(uint32_t mask, int shift, const char *text = nullptr)
|
|
{
|
|
printf("\033[2J\033[H"); // clear + home
|
|
|
|
for (int byte = 3; byte >= 0; byte--) {
|
|
uint8_t b = ((mask >> (byte * 8)) & 0xFF);
|
|
// Circular shift for movement illusion
|
|
uint8_t rotated = (b << shift) | (b >> (8 - shift));
|
|
for (int i = 7; i >= 0; i--) {
|
|
printf("%c", (rotated & (1 << i)) ? '#' : '.');
|
|
}
|
|
printf("\r\n");
|
|
}
|
|
|
|
// Message under the mask
|
|
if (text && text[0] != '\0') {
|
|
printf("\r\n[RX] %s\r\n", text);
|
|
}
|
|
|
|
fflush(stdout);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
serial_port.set_format(8, BufferedSerial::None, 1);
|
|
printf("Baud: %d, Format: 8-N-1\r\n", BAUD_RATE);
|
|
|
|
uint32_t mask = 0xF0F0A55A;
|
|
int shift = 0;
|
|
char message[BUFFER_SIZE] = {0};
|
|
bool message_active = false;
|
|
Timer msg_timer;
|
|
Timer anim_timer;
|
|
msg_timer.start();
|
|
anim_timer.start();
|
|
|
|
while (true) {
|
|
if (serial_port.readable()) {
|
|
memset(rx_buffer, 0, sizeof(rx_buffer));
|
|
ssize_t num = serial_port.read(rx_buffer, sizeof(rx_buffer) - 1);
|
|
if (num > 0) {
|
|
led = !led;
|
|
|
|
strncpy(message, rx_buffer, sizeof(message) - 1);
|
|
message_active = true;
|
|
msg_timer.reset();
|
|
}
|
|
}
|
|
|
|
if (message_active && msg_timer.elapsed_time() > 1s) {
|
|
message_active = false;
|
|
memset(message, 0, sizeof(message));
|
|
}
|
|
|
|
// if (message_active && msg_timer.elapsed_time() > 100ms) {
|
|
// shift = (shift + 1) % 8;
|
|
|
|
// }
|
|
if (anim_timer.elapsed_time() >= 100ms) {
|
|
shift = (shift + 1) % 8;
|
|
anim_timer.reset();
|
|
|
|
draw_mask(mask, shift, message_active ? message : nullptr);
|
|
}
|
|
ThisThread::sleep_for(20ms);
|
|
}
|
|
}
|