// Minimal headless serial self-test -- NO jlInit (no video/graphics), so it
// runs even where the graphics HAL can't (e.g. AROS on the Amiga). Opens the
// DEFAULT port at 9600 8N1, sends a banner (TX heartbeat), then echoes every
// received byte forever. A host serial peer verifies banner (TX) + echo (RX).
#include <joey/serial.h>

int main(void) {
    jlSerialConfigT  cfg;
    static const char banner[] = "JLSERTEST-READY\r\n";

    cfg.baud     = 9600u;
    cfg.dataBits = 8u;
    cfg.stopBits = 1u;
    cfg.parity   = JL_SERIAL_PARITY_NONE;
    cfg.flow     = JL_SERIAL_FLOW_NONE;
    cfg.unit     = 0u;
    if (!jlSerialOpen(JL_SERIAL_DEFAULT, &cfg)) {
        return 1;
    }
    jlSerialWrite((const uint8_t *)banner, (uint16_t)(sizeof(banner) - 1u));

    for (;;) {
        uint8_t   buf[64];
        uint16_t  n;

        jlSerialPoll();
        n = jlSerialRead(buf, (uint16_t)sizeof(buf));
        if (n > 0u) {
            jlSerialWrite(buf, n);
        }
    }
    /* not reached */
}