diff options
| author | Sergey Vlasov <sigprof@gmail.com> | 2022-01-30 22:06:19 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-01-30 11:06:19 -0800 |
| commit | 03b1d9ef1f7f472f83c929c15044e71453823737 (patch) | |
| tree | 8f32ff6803a1f93a36a1ed0d32be3aa277c71c7a | |
| parent | b20bbc715216246ac7a93176eac2c5b428b272bf (diff) | |
Add a warning about USBtinyISP limitations to the ISP flashing guide (#15898)
| -rw-r--r-- | docs/isp_flashing_guide.md | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/docs/isp_flashing_guide.md b/docs/isp_flashing_guide.md index 384aaf7229..febb34c574 100644 --- a/docs/isp_flashing_guide.md +++ b/docs/isp_flashing_guide.md @@ -57,13 +57,33 @@ To use a Teensy 2.0 as an ISP flashing tool, you will first need to load a [spec !> Note that the `B0` pin on the Teensy should be wired to the `RESET` pin on the keyboard's controller. ***DO NOT*** connect the `RESET` pin on the Teensy to the `RESET` on the keyboard. -### SparkFun PocketAVR / USBtinyISP / USBasp +### SparkFun PocketAVR / USBtinyISP [SparkFun PocketAVR](https://www.sparkfun.com/products/9825) [Adafruit USBtinyISP](https://www.adafruit.com/product/46) + +!> SparkFun PocketAVR and USBtinyISP **DO NOT support** AVR chips with more than 64 KiB of flash (e.g., the AT90USB128 series). This limitation is mentioned on the [shop page for SparkFun PocketAVR](https://www.sparkfun.com/products/9825) and in the [FAQ for USBtinyISP](https://learn.adafruit.com/usbtinyisp/f-a-q#faq-2270879). If you try to use one of these programmers with AT90USB128 chips, you will get verification errors from `avrdude`, and the bootloader won't be flashed properly (e.g., see the [issue #3286](https://github.com/qmk/qmk_firmware/issues/3286)). + +**AVRDUDE Programmer**: `usbtiny` +**AVRDUDE Port**: `usb` + +#### Wiring + +|ISP |Keyboard| +|---------|--------| +|`VCC` |`VCC` | +|`GND` |`GND` | +|`RST` |`RESET` | +|`SCLK` |`SCLK` | +|`MOSI` |`MOSI` | +|`MISO` |`MISO` | + + +### USBasp + [Thomas Fischl's USBasp](https://www.fischl.de/usbasp/) -**AVRDUDE Programmer**: `usbtiny` / `usbasp` +**AVRDUDE Programmer**: `usbasp` **AVRDUDE Port**: `usb` #### Wiring |