From 6572616a6b4bded686a22377d839cef7506de24d Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Tue, 19 Mar 2019 12:56:52 +0100
Subject: Added STM32F042 support.

---
 rcc/rcc.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'rcc/rcc.cpp')

diff --git a/rcc/rcc.cpp b/rcc/rcc.cpp
index aa9147a..65faf33 100644
--- a/rcc/rcc.cpp
+++ b/rcc/rcc.cpp
@@ -48,6 +48,16 @@ void rcc_init() {
 	// Set APB2 prescaler to /2.
 	RCC.CFGR |= 4 << 13;
 	
+	#elif defined(STM32F0)
+
+	// Enable HSI48.
+	RCC.CR2 |= 1 << 16; // HSI48ON
+	while(!(RCC.CR2 & (1 << 17))); // HSI48RDY
+
+	// Switch to HSI48.
+	RCC.CFGR |= 3 << 0; // SW = HSI48
+	while((RCC.CFGR & (3 << 2)) != (3 << 2)); // SWS = HSI48
+
 	#elif defined(STM32L0)
 	
 	// Enable HSI16.
-- 
cgit v1.2.3