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Update README.md

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...@@ -70,9 +70,9 @@ If the C/C++ language server clangd is unable to find `ch32v003fun.h`, the examp ...@@ -70,9 +70,9 @@ If the C/C++ language server clangd is unable to find `ch32v003fun.h`, the examp
`build_all_clangd.sh` does in `build scripts` does this for all examples. `build_all_clangd.sh` does in `build scripts` does this for all examples.
## Quick Reference ## Quick Reference
* Needed for programming/debugging: `SWIO` is on `PD1` * **REQUIRED** for programming/debugging: `SWIO` is on `PD1`. Do not re-use PD1 for multiple functions.
* Optional (not needed, can be configured as output if fuse set): `NRST` is on `PD7` * Optional (not needed, can be configured as output if fuse set): `NRST` is on `PD7`. By default from factor, is GPIO.
* UART TX (optional) is on: `PD5` * UART TX (optional) is on: `PD5`. We recommend using SWIO for `printf` debugging.
![ch32v003a4m6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003a4m6.svg) ![ch32v003a4m6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003a4m6.svg)
![ch32v003f4p6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003f4p6.svg) ![ch32v003f4p6](https://raw.githubusercontent.com/Tengo10/pinout-overview/main/pinouts/CH32v003/ch32v003f4p6.svg)
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