diff options
Diffstat (limited to 'docs/stm32f1.md')
| -rw-r--r-- | docs/stm32f1.md | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/docs/stm32f1.md b/docs/stm32f1.md index c75dd304..04868ec6 100644 --- a/docs/stm32f1.md +++ b/docs/stm32f1.md @@ -22,7 +22,8 @@ Fixed pins The UART used for communication with the host is fixed to pins PA9 (TX) and PA10 (RX). SWD pins (PA13/PA14) are enabled for debugging and cannot be used for any -I/O. +I/O. SPI uses pins PB13/PB14/PB15, but the pins can be used as general I/O if +SPI is not used. Digital I/O =========== @@ -44,4 +45,5 @@ PC0-PC5). SPI === -SPI support is currently unimplemented. +SPI uses pin PB13 (SCK), PB14 (MISO) and PB15 (MOSI). The clock speed range is +0.15..18 MHz. Chip select pins do not have any restrictions. |