From aefb1b93d99d49341bee74a9611eb07278af32cf Mon Sep 17 00:00:00 2001
From: Pasi Kemppainen <48950874+pazi88@users.noreply.github.com>
Date: Tue, 26 Mar 2024 15:21:40 +0200
Subject: [PATCH] Fix building on F072RB

---
 STM32_CAN.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/STM32_CAN.cpp b/STM32_CAN.cpp
index d05f8dd..1ea9ebb 100644
--- a/STM32_CAN.cpp
+++ b/STM32_CAN.cpp
@@ -136,9 +136,17 @@ void STM32_CAN::begin( bool retransmission ) {
       HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
       GPIO_InitStruct.Pin = GPIO_PIN_1;
       #else
+      #if defined(GPIO_AF4_CAN)
+      GPIO_InitStruct.Alternate = GPIO_AF4_CAN;
+      #else
       GPIO_InitStruct.Alternate = GPIO_AF9_CAN1;
+      #endif
       GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
+      #if defined(GPIO_SPEED_FREQ_VERY_HIGH)
       GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+      #else
+      GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+      #endif
       #endif
       GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
       HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);