#!/usr/bin/env python3
"""
Serial send test – single file. Run on ESP32 (TX side).
Wire: ESP32 TX (GPIO17) → Pico RX (GPIO1); GND ↔ GND. Run receive test on Pico.
  mpremote run pico/test/test_serial_send.py
"""
import time
import sys
from machine import UART, Pin

if "esp32" in sys.platform:
    UART_ID, TX_PIN, BAUD = 1, 17, 115200
else:
    UART_ID, TX_PIN, BAUD = 0, 0, 115200

print("UART send: %s UART%d TX=%s %d baud" % (sys.platform, UART_ID, TX_PIN, BAUD))
uart = UART(UART_ID, baudrate=BAUD, tx=Pin(TX_PIN, Pin.OUT))
for line in [b"serial send test 1", b"serial send test 2", b"{\"v\":\"1\",\"b\":128}"]:
    uart.write(line + b"\n")
    print("sent:", line.decode("utf-8"))
    time.sleep_ms(50)
uart.deinit()
print("Send test done.")