Detailed description
This pull request changes the pinout of the blackpillv2 platform.
The changes are done as described in the comments of #1418.
Table 1: comparing current pinout to proposed pinout
| function | current (e490465) |
proposal |
|---|---|---|
| nRst | PB4 | PA5 |
| nTRST | PB5 (optional) | PA6 (optional) |
| TDI | PA1 (also used by LED UART) | PB6 |
| TDO | PB3 | PB7 |
| TCK | PA14 | PB8 |
| TMS | PA13 | PB9 |
| PWR | PB8 | PA1 |
| UART TX | PB6 | PA2 |
| UART RX | PB7 | PA3 |
| LED UART | PA1 (also used by TDI) | PA4 |
| LED idle run | PC13 | PC13 |
| LED error | PC14 | PC14 |
| LED boot loader | PC15 | PC15 |
| USER KEY | PA0 | PA0 |
| USB VBUS | PA9 | PA9 |
| USB ID | PA10 | PA10 |
| USB D- | PA11 | PA11 |
| USB D+ | PA12 | PA12 |
| JTAG TMS | - | PA13 |
| JTAG TCK | - | PA14 |
| JTAG TDI | PA15 | PA15 |
| JTAG TDO | - | PB3 |
| JTAG TRST | - | PB4 |
Blackpillv2_pinout_proposal2
Figure 1: proposed pinout
Benefits:
- This pull request fixes the issue described in #1418. Therefore the is no pin conflict anymore between LED UART and TDI.
- JTAG pins (PA13, PA14, PA15, PB3, PB4) are not used, such that these pins stay available to program and debug the board.
- Pins of the STM32F411Cx that are 5V-intolerant (PB5) are not used, to reduce susceptibility to damage.
- Pins of similar type are located closer to each other on the board.
Your checklist for this pull request
- I've read the Code of Conduct
- I've read the guidelines for contributing to this repository
- It builds for hardware native (
make PROBE_HOST=native) - It builds for hardware blackpillv2 (
make PROBE_HOST=blackpillv2) - It builds as BMDA (
make PROBE_HOST=hosted) - I've tested it to the best of my ability: the code compiles, can be flashed and runs on a board with STM32F401CC microcontroller.
- My commit messages provide a useful short description of what the commits do
Closing issues
- fixes #1418
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## Detailed description
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This pull request changes the pinout of the blackpillv2 platform.
The changes are done as described in the comments of #1418.
Table 1: comparing current pinout to proposed pinout
| function | current (e490465) | proposal |
| -------- | ----------------- | -------- |
| nRst | PB4 | PA5 |
| nTRST | PB5 (optional) | PA6 (optional) |
| TDI | PA1 (also used by LED UART) | PB6 |
| TDO | PB3 | PB7 |
| TCK | PA14 | PB8 |
| TMS | PA13 | PB9 |
| PWR | PB8 | PA1 |
| UART TX | PB6 | PA2 |
| UART RX | PB7 | PA3 |
| LED UART | PA1 (also used by TDI) | PA4 |
| LED idle run | PC13 | PC13 |
| LED error | PC14 | PC14 |
| LED boot loader | PC15 | PC15 |
| USER KEY | PA0 | PA0 |
| USB VBUS | PA9 | PA9 |
| USB ID | PA10 | PA10 |
| USB D- | PA11 | PA11 |
| USB D+ | PA12 | PA12 |
| JTAG TMS | - | PA13 |
| JTAG TCK | - | PA14 |
| JTAG TDI | PA15 | PA15 |
| JTAG TDO | - | PB3 |
| JTAG TRST | - | PB4 |
Figure 1: proposed pinout
Benefits:
- This pull request fixes the issue described in #1418. Therefore the is no pin conflict anymore between LED UART and TDI.
- JTAG pins (PA13, PA14, PA15, PB3, PB4) are not used, such that these pins stay available to program and debug the board.
- Pins of the STM32F411Cx that are 5V-intolerant (PB5) are not used, to reduce susceptibility to damage.
- Pins of similar type are located closer to each other on the board.
## Your checklist for this pull request
* [x] I've read the [Code of Conduct](https://github.com/blackmagic-debug/blackmagic/blob/main/CODE_OF_CONDUCT.md)
* [x] I've read the [guidelines for contributing](https://github.com/blackmagic-debug/blackmagic/blob/main/CONTRIBUTING.md) to this repository
* [x] It builds for hardware native (`make PROBE_HOST=native`)
* [x] It builds for hardware blackpillv2 (`make PROBE_HOST=blackpillv2`)
* [x] It builds as BMDA (`make PROBE_HOST=hosted`)
* [x] I've tested it to the best of my ability: the code compiles, can be flashed and runs on a board with STM32F401CC microcontroller.
* [x] My commit messages provide a useful short description of what the commits do
## Closing issues
- fixes #1418
<!-- put "fixes #XXXX" here to auto-close the issue(s) that your PR fixes (if any). -->