From 584fb7cd7b67d0e2ba8291bc06143f9db9a0c400 Mon Sep 17 00:00:00 2001 From: Andrew Tridgell Date: Mon, 30 Aug 2021 16:57:48 +1000 Subject: [PATCH] HAL_ChibiOS: use more USB buffers on higher end F7 chips --- libraries/AP_HAL_ChibiOS/hwdef/common/halconf.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libraries/AP_HAL_ChibiOS/hwdef/common/halconf.h b/libraries/AP_HAL_ChibiOS/hwdef/common/halconf.h index 1867345df7..f84b7fcdc8 100644 --- a/libraries/AP_HAL_ChibiOS/hwdef/common/halconf.h +++ b/libraries/AP_HAL_ChibiOS/hwdef/common/halconf.h @@ -458,7 +458,8 @@ * @note The default is 2 buffers. */ #if !defined(SERIAL_USB_BUFFERS_NUMBER) || defined(__DOXYGEN__) -#if defined(STM32H7) +// more USB buffers works well on H7 and higher end F7 +#if defined(STM32H7) || (defined(STM32F7) && HAL_MEMORY_TOTAL_KB>=512) #define SERIAL_USB_BUFFERS_NUMBER 4 #else #define SERIAL_USB_BUFFERS_NUMBER 2