Support inverted status LED

Author: tannewt

ports/zephyr-cp/cptools/zephyr2cp.py

@@ -8,6 +8,9 @@
 
 logger = logging.getLogger(__name__)
 
+# GPIO flags defined here: include/zephyr/dt-bindings/gpio/gpio.h
+GPIO_ACTIVE_LOW = 1 << 0
+
 MANUAL_COMPAT_TO_DRIVER = {
     "renesas_ra_nv_flash": "flash",
 }
@@ -212,6 +215,7 @@ def zephyr_dts_to_cp_board(builddir, zephyrbuilddir):  # noqa: C901
     flashes = []
     rams = []
     status_led = None
+    status_led_inverted = False
     path2chosen = {}
     chosen2path = {}
     usb_num_endpoint_pairs = 0
@@ -320,6 +324,7 @@ def zephyr_dts_to_cp_board(builddir, zephyrbuilddir):  # noqa: C901
                 props = led.props
                 ioport = props["gpios"]._markers[1][2]
                 num = int.from_bytes(props["gpios"].value[4:8], "big")
+                flags = int.from_bytes(props["gpios"].value[8:12], "big")
                 if "label" in props:
                     if (ioport, num) not in board_names:
                         board_names[(ioport, num)] = []
@@ -330,6 +335,7 @@ def zephyr_dts_to_cp_board(builddir, zephyrbuilddir):  # noqa: C901
                     if "led0" in node2alias[led]:
                         board_names[(ioport, num)].append("LED")
                         status_led = (ioport, num)
+                        status_led_inverted = flags & GPIO_ACTIVE_LOW
                     board_names[(ioport, num)].extend(node2alias[led])
 
         if "gpio-keys" in compatible:
@@ -389,8 +395,12 @@ def zephyr_dts_to_cp_board(builddir, zephyrbuilddir):  # noqa: C901
     header = board_dir / "mpconfigboard.h"
     if status_led:
         status_led = f"#define MICROPY_HW_LED_STATUS (&pin_{status_led})\n"
+        status_led_inverted = (
+            f"#define MICROPY_HW_LED_STATUS_INVERTED ({'1' if status_led_inverted else '0'})\n"
+        )
     else:
         status_led = ""
+        status_led_inverted = ""
     ram_list = []
     ram_externs = []
     max_size = 0
@@ -412,6 +422,7 @@ def zephyr_dts_to_cp_board(builddir, zephyrbuilddir):  # noqa: C901
 #define MICROPY_HW_MCU_NAME         "{soc_name}"
 #define CIRCUITPY_RAM_DEVICE_COUNT  {len(rams)}
 {status_led}
+{status_led_inverted}
         """
     if not header.exists() or header.read_text() != new_header_content:
         header.write_text(new_header_content)