1 files changed, 17 insertions, 0 deletions
diff --git a/stm32.h b/stm32.h
index 9b8ec59..455f130 100644
--- a/stm32.h
+++ b/stm32.h
@@ -43,5 +43,22 @@ struct GPIO_t {
 };
 
 static GPIO_t& GPIOA = *(GPIO_t*)0x40010800;
+static GPIO_t& GPIOB = *(GPIO_t*)0x40010c00;
+static GPIO_t& GPIOC = *(GPIO_t*)0x40011000;
+
+struct I2C_t {
+	volatile uint32_t CR1;
+	volatile uint32_t CR2;
+	volatile uint32_t OAR1;
+	volatile uint32_t OAR2;
+	volatile uint32_t DR;
+	volatile uint32_t SR1;
+	volatile uint32_t SR2;
+	volatile uint32_t CCR;
+	volatile uint32_t TRISE;
+};
+
+static I2C_t& I2C1 = *(I2C_t*)0x40005400;
+static I2C_t& I2C2 = *(I2C_t*)0x40005800;
 
 #endif