115 lines
2.8 KiB
C++
115 lines
2.8 KiB
C++
// main.cpp
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#include "mbed.h"
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#include "background_dark_inverted.h"
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#include <vector>
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#include <string>
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#define TARGET_TX_PIN USBTX
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#define TARGET_RX_PIN USBRX
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// #define BAUD_RATE 1843200
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// #define BAUD_RATE 921600
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// #define BAUD_RATE 460800
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#define BAUD_RATE 115200
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static BufferedSerial serial_port(TARGET_TX_PIN, TARGET_RX_PIN, BAUD_RATE);
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FileHandle *mbed::mbed_override_console(int fd)
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{
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return &serial_port;
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}
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DigitalOut led(LED1);
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#define BUFFER_SIZE 64
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static char rx_buffer[BUFFER_SIZE];
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// ASCII fart background
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void draw_mask(const char *unused_filename, int shift, const char *text = nullptr) {
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const int view_width = 50; // visible width
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const int view_height = 24;
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// Terminal clear + home
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printf("\033[2J\033[H");
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for (int i = 0; i < view_height && i < BACKGROUND_DARK_INVERTED_LINES; i++) {
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const char *row = BACKGROUND_DARK_INVERTED[i];
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int width = strlen(row);
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if (width == 0) {
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printf("\r\n");
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continue;
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}
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int start = shift % width;
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// Print visible window (wrap around)
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for (int j = 0; j < view_width; j++) {
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char c = row[(start + j) % width];
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printf("%c", c);
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}
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printf("\r\n");
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}
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if (text && text[0] != '\0')
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printf("\r\n[RX] %s\r\n", text);
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fflush(stdout);
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}
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int main(void) {
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serial_port.set_format(8, BufferedSerial::None, 1);
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printf("Baud: %d, Format: 8-N-1\r\n", BAUD_RATE);
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int shift = 0;
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char message[BUFFER_SIZE] = {0};
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bool message_active = false;
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Timer msg_timer;
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Timer anim_timer;
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msg_timer.start();
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anim_timer.start();
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const char *bg_file = "background_dark_inverted.txt";
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bool need_redraw = false;
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while (true) {
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if (serial_port.readable()) {
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memset(rx_buffer, 0, sizeof(rx_buffer));
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ssize_t num = serial_port.read(rx_buffer, sizeof(rx_buffer) - 1);
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if (num > 0) {
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led = !led;
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strncpy(message, rx_buffer, sizeof(message) - 1);
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message_active = true;
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msg_timer.reset();
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need_redraw = true;
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}
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}
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if (message_active && msg_timer.elapsed_time() > 1s) {
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message_active = false;
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memset(message, 0, sizeof(message));
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need_redraw = true;
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}
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// if (message_active && msg_timer.elapsed_time() > 100ms) {
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// shift = (shift + 1) % 8;
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// }
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if (anim_timer.elapsed_time() >= 900ms) {
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shift++;
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anim_timer.reset();
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need_redraw = true;
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}
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if (need_redraw) {
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draw_mask(bg_file, shift, message_active ? message : nullptr);
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need_redraw = false;
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ThisThread::sleep_for(150ms);
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}
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ThisThread::sleep_for(20ms);
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}
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}
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