diff options
| -rw-r--r-- | tests/extmod/machine_uart_tx.py | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/tests/extmod/machine_uart_tx.py b/tests/extmod/machine_uart_tx.py index 25bb83492..e9652f3c7 100644 --- a/tests/extmod/machine_uart_tx.py +++ b/tests/extmod/machine_uart_tx.py @@ -9,12 +9,34 @@ except ImportError: import time, sys +initial_delay_ms = 0 +bit_margin = 0 +timing_margin_us = 100 + # Configure pins based on the target. -if "rp2" in sys.platform: +if "esp32" in sys.platform: + uart_id = 1 + pins = {} + timing_margin_us = 400 +elif "mimxrt" in sys.platform: + uart_id = 1 + pins = {} + initial_delay_ms = 20 # UART sends idle frame after init, so wait for that + bit_margin = 1 +elif "pyboard" in sys.platform: + uart_id = 4 + pins = {} + initial_delay_ms = 50 # UART sends idle frame after init, so wait for that + bit_margin = 1 # first start-bit must wait to sync with the UART clock +elif "rp2" in sys.platform: uart_id = 0 - tx_pin = "GPIO0" - rx_pin = "GPIO1" + pins = {"tx": "GPIO0", "rx": "GPIO1"} timing_margin_us = 180 +elif "samd" in sys.platform: + uart_id = 2 + pins = {"tx": "D1", "rx": "D0"} + timing_margin_us = 300 + bit_margin = 1 else: print("SKIP") raise SystemExit @@ -22,7 +44,8 @@ else: # Test that write+flush takes the expected amount of time to execute. for bits_per_s in (2400, 9600, 115200): text = "Hello World" - uart = UART(uart_id, bits_per_s, bits=8, parity=None, stop=1, tx=tx_pin, rx=rx_pin) + uart = UART(uart_id, bits_per_s, bits=8, parity=None, stop=1, **pins) + time.sleep_ms(initial_delay_ms) start_us = time.ticks_us() uart.write(text) @@ -33,4 +56,5 @@ for bits_per_s in (2400, 9600, 115200): bits_per_char = 10 expect_us = (len(text)) * bits_per_char * 1_000_000 // bits_per_s delta_us = abs(duration_us - expect_us) - print(bits_per_s, delta_us <= timing_margin_us or delta_us) + margin_us = timing_margin_us + bit_margin * 1_000_000 // bits_per_s + print(bits_per_s, delta_us <= margin_us or delta_us) |