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junk in the Trunk (#6149)

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Austin
2025-02-25 16:41:45 +08:00
committed by GitHub
co-authored by GitHub
parent bf958ed01d
commit 4e575872da
17 changed files with 81 additions and 54 deletions
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variants/xiao_ble/README.md
+27 -24
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@@ -116,24 +116,26 @@ The default pin mapping in `variant.h` uses 'automatic Tx/Rx switching' mode. If
 
<strong>MCU -> E22 connections</strong>
| Xiao BLE pin | variant.h definition | E22 pin | Notes |
| :------------ | :---------------------------- | :-----------------| :------------------------------------------------------------------------------------------------------------------- |
| D0 | SX126X_CS | 19 (NSS) | |
| D1 | SX126X_DIO1 | 13 (DIO1) | |
| D2 | SX126X_BUSY | 14 (BUSY) | |
| D3 | SX126X_RESET | 15 (NRST) | |
| D7 | SX126X_RXEN | 6 (RXEN) | These pins must still be connected, and `SX126X_RXEN` defined in `variant.h`, otherwise Rx sensitivity will be poor. |
| D8 | PIN_SPI_SCK | 18 (SCK) | |
| D9 | PIN_SPI_MISO | 16 (MISO) | |
| D10 | PIN_SPI_MOSI | 17 (MOSI) | |
| Xiao BLE pin | variant.h definition | E22 pin | Notes |
| :----------- | :------------------- | :-------- | :------------------------------------------------------------------------------------------------------------------- |
| D0 | SX126X_CS | 19 (NSS) | |
| D1 | SX126X_DIO1 | 13 (DIO1) | |
| D2 | SX126X_BUSY | 14 (BUSY) | |
| D3 | SX126X_RESET | 15 (NRST) | |
| D7 | SX126X_RXEN | 6 (RXEN) | These pins must still be connected, and `SX126X_RXEN` defined in `variant.h`, otherwise Rx sensitivity will be poor. |
| D8 | PIN_SPI_SCK | 18 (SCK) | |
| D9 | PIN_SPI_MISO | 16 (MISO) | |
| D10 | PIN_SPI_MOSI | 17 (MOSI) | |
&nbsp;
&nbsp;
<strong>E22 -> E22 connections:</strong>
| E22 pin | E22 pin | Notes |
| :------------ | :---------------------------- | :------------------------------------------------------------------------ |
| TXEN | DIO2 | These must be physically connected for automatic Tx/Rx switching to work. |
| E22 pin | E22 pin | Notes |
| :------ | :------ | :------------------------------------------------------------------------ |
| TXEN | DIO2 | These must be physically connected for automatic Tx/Rx switching to work. |
<h3>Note</h3>
@@ -148,17 +150,18 @@ The schematic (`xiao-ble-e22-schematic.png`) in the `eagle-project` directory us
<h3>Example wiring for "Manual Tx/Rx switching" mode:</h3>
<strong>MCU -> E22 connections</strong>
| Xiao BLE pin | variant.h definition | E22 pin | Notes |
| :------------ | :---------------------------- | :-----------------| :--------------------------- |
| D0 | SX126X_CS | 19 (NSS) | |
| D1 | SX126X_DIO1 | 13 (DIO1) | |
| D2 | SX126X_BUSY | 14 (BUSY) | |
| D3 | SX126X_RESET | 15 (NRST) | |
| D6 | SX126X_TXEN | 7 (TXEN) | |
| D7 | SX126X_RXEN | 6 (RXEN) | |
| D8 | PIN_SPI_SCK | 18 (SCK) | |
| D9 | PIN_SPI_MISO | 16 (MISO) | |
| D10 | PIN_SPI_MOSI | 17 (MOSI) | |
| Xiao BLE pin | variant.h definition | E22 pin | Notes |
| :----------- | :------------------- | :-------- | :---- |
| D0 | SX126X_CS | 19 (NSS) | |
| D1 | SX126X_DIO1 | 13 (DIO1) | |
| D2 | SX126X_BUSY | 14 (BUSY) | |
| D3 | SX126X_RESET | 15 (NRST) | |
| D6 | SX126X_TXEN | 7 (TXEN) | |
| D7 | SX126X_RXEN | 6 (RXEN) | |
| D8 | PIN_SPI_SCK | 18 (SCK) | |
| D9 | PIN_SPI_MISO | 16 (MISO) | |
| D10 | PIN_SPI_MOSI | 17 (MOSI) | |
<strong>E22 -> E22 connections:</strong> (none)