chore(wl3): add I2C support

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

libraries/Wire/src/utility/twi.c

@@ -193,9 +193,9 @@ static I2C_HandleTypeDef *i2c_handles[I2C_NUM];
 static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
 {
   uint32_t clkSrcFreq = 0;
-#if defined(STM32WB0x)
+#if defined(STM32WB0x) || defined(STM32WL3x)
   (void)i2c; // Avoid unused parameter warning
-  clkSrcFreq = SystemCoreClock;
+  clkSrcFreq = SystemCoreClock / 4;
 #else
 #ifdef STM32H7xx
   PLL3_ClocksTypeDef PLL3_Clocks;
@@ -515,7 +515,7 @@ static uint32_t i2c_getClkFreq(I2C_TypeDef *i2c)
     }
   }
 #endif // I2C6_BASE
-#endif /* STM32WB0x */
+#endif /* STM32WB0x || STM32WL3x */
   return clkSrcFreq;
 }
 
@@ -759,7 +759,8 @@ void i2c_init(i2c_t *obj, uint32_t timing, uint32_t ownAddress)
 
           obj->irq = I2C1_EV_IRQn;
 #if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
-    !defined(STM32L0xx) && !defined(STM32U0xx) && !defined(STM32WB0x)
+    !defined(STM32L0xx) && !defined(STM32U0xx) && !defined(STM32WB0x) && \
+    !defined(STM32WL3x)
           obj->irqER = I2C1_ER_IRQn;
 #endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
           i2c_handles[I2C1_INDEX] = handle;
@@ -773,7 +774,8 @@ void i2c_init(i2c_t *obj, uint32_t timing, uint32_t ownAddress)
           __HAL_RCC_I2C2_RELEASE_RESET();
           obj->irq = I2C2_EV_IRQn;
 #if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
-    !defined(STM32L0xx) && !defined(STM32U0xx)
+    !defined(STM32L0xx) && !defined(STM32U0xx) && !defined(STM32WB0x) && \
+    !defined(STM32WL3x)
           obj->irqER = I2C2_ER_IRQn;
 #endif /* !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
           i2c_handles[I2C2_INDEX] = handle;

libraries/Wire/src/utility/twi.h

@@ -69,7 +69,8 @@ extern "C" {
 
 /* Redefinition of IRQ for C0/F0/G0/L0/U0 families */
 #if defined(STM32C0xx) || defined(STM32F0xx) || defined(STM32G0xx) ||\
-    defined(STM32L0xx) || defined(STM32U0xx) || defined(STM32WB0x)
+    defined(STM32L0xx) || defined(STM32U0xx) || defined(STM32WB0x) || \
+    defined(STM32WL3x)
 #if defined(I2C1_BASE)
 #define I2C1_EV_IRQn        I2C1_IRQn
 #define I2C1_EV_IRQHandler  I2C1_IRQHandler