diff options
| author | Jeremy Herbert <[email protected]> | 2019-12-12 09:40:06 +1000 |
|---|---|---|
| committer | GitHub <[email protected]> | 2019-12-12 09:40:06 +1000 |
| commit | 9d96b6d66eab8a8dea44db1a2c346f667d22ce21 (patch) | |
| tree | bd9999f74aa266b0fd169526d8dca2694cfffeda /src | |
| parent | fc7f6f0e1ebbf7eaca2f0a5a1b88a1b43b2f41fa (diff) | |
Update dcd_stm32_fsdev.c
Add a note about pin remapping for the STM32F042Fx
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c index ec182960e..9e99ea1de 100644 --- a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c +++ b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c @@ -30,7 +30,7 @@ /********************************************** * This driver has been tested with the following MCUs: - * - F070, F072, L053 + * - F070, F072, L053, F042F6 * * It also should work with minimal changes for any ST MCU with an "USB A"/"PCD"/"HCD" peripheral. This * covers: @@ -44,6 +44,9 @@ * L4x2, L4x3 1024 byte buffer * * To use this driver, you must: + * - If you are using a device with crystal-less USB, set up the clock recovery system (CRS) + * - Remap pins to be D+/D- on devices that they are shared (for example: F042Fx) + * - This is different to the normal "alternate function" GPIO interface, needs to go through SYSCFG->CFGRx register * - Enable USB clock; Perhaps use __HAL_RCC_USB_CLK_ENABLE(); * - (Optionally configure GPIO HAL to tell it the USB driver is using the USB pins) * - call tusb_init(); |