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boards/wemos-zero: fix Arduio I/O Map #21004

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merged 2 commits into from
Nov 19, 2024
Merged

boards/wemos-zero: fix Arduio I/O Map #21004

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boards/wemos-zero: fix Arduio I/O Map
maribu Nov 18, 2024
fd233fe
boards/wemos-zero: add note for identification
maribu Nov 18, 2024
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15 changes: 13 additions & 2 deletions boards/common/arduino-zero/include/arduino_iomap.h
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Original file line number Diff line number Diff line change
Expand Up @@ -64,11 +64,22 @@ extern "C" {
* @name Mapping of MCU pins to Arduino pins
* @{
*/

/* The WeMos Zero / HW-819 has D2 and D4 swapped compared to official Arduino
* Zero, so we have to handle D2 and D4 differently depending on board */
#ifdef BOARD_WEMOS_ZERO
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# define ARDUINO_PIN_2 GPIO_PIN(PA, 8)
# define ARDUINO_PIN_4 GPIO_PIN(PA, 14)
#else /* Official Arduino Zero or fully compatible: */
# define ARDUINO_PIN_2 GPIO_PIN(PA, 14)
# define ARDUINO_PIN_4 GPIO_PIN(PA, 8)
#endif

/* all other pins are identical for all currently supported Arduino Zero
* compatible boards */
#define ARDUINO_PIN_0 GPIO_PIN(PA, 11)
#define ARDUINO_PIN_1 GPIO_PIN(PA, 10)
#define ARDUINO_PIN_2 GPIO_PIN(PA, 14)
#define ARDUINO_PIN_3 GPIO_PIN(PA, 9)
#define ARDUINO_PIN_4 GPIO_PIN(PA, 8)
#define ARDUINO_PIN_5 GPIO_PIN(PA, 15)
#define ARDUINO_PIN_6 GPIO_PIN(PA, 20)
#define ARDUINO_PIN_7 GPIO_PIN(PA, 21)
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5 changes: 3 additions & 2 deletions boards/wemos-zero/doc.txt
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Expand Up @@ -6,13 +6,14 @@
## Overview

The WeMos Zero is a cheap clone of Arduino Zero featuring a ATSAMD21G18A.
These boards either have a silkscreen "WeMos" or "HW-910" label on their back.
Unlike the original Zero, it does not include an embedded debugger/programmer.
Instead, the [UF2 Bootloader](https://github.com/microsoft/uf2-samdx1) is
used to program this board. The SAMD21 is a ARM Cortex-M0+ micro-controller.
It has 256KiB of flash memory and 32KiB of RAM.

Note: The official Arduino Zero using the native USB port and the Adafruit
Metro M0 Express should also work with board definition.
@note The official Arduino Zero using the native USB port and the Adafruit
Metro M0 Express should also work with this board definition.

## Hardware

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