cpu/stm32: add ADC support for WB55

cpu/stm32/Makefile.dep

@@ -79,7 +79,7 @@ ifneq (,$(filter periph_rtc_mem,$(USEMODULE)))
 endif
 
 ifneq (,$(filter periph_adc,$(FEATURES_USED)))
-  ifneq (,$(filter f3 l4 wl, $(CPU_FAM)))
+  ifneq (,$(filter f3 l4 wb wl, $(CPU_FAM)))
     USEMODULE += ztimer
     USEMODULE += ztimer_msec
   endif

cpu/stm32/include/periph/wb/periph_cpu.h

@@ -24,6 +24,26 @@
 extern "C" {
 #endif
 
+/**
+ * @brief   Available number of ADC devices
+ */
+#if defined(ADC3)
+#define ADC_DEVS            (3U)
+#elif defined(ADC2)
+#define ADC_DEVS            (2U)
+#elif defined(ADC1)
+#define ADC_DEVS            (1U)
+#else
+#error "Can't determine the number of ADC devices"
+#endif
+
+#if defined(CPU_MODEL_STM32WB55RG)
+/**
+ * @brief   ADC voltage regulator start-up time [us]
+ */
+#define ADC_T_ADCVREG_STUP_US (20)
+#endif
+
 #ifndef DOXYGEN
 
 /**
@@ -32,6 +52,21 @@ extern "C" {
  */
 #define STM32_BOOTLOADER_ADDR   (0x1FFF0000)
 
+/**
+ * @brief   Override ADC resolution values
+ * @{
+ */
+#define HAVE_ADC_RES_T
+typedef enum {
+    ADC_RES_6BIT  = (ADC_CFGR_RES),   /**< ADC resolution: 6 bit */
+    ADC_RES_8BIT  = (ADC_CFGR_RES_1), /**< ADC resolution: 8 bit */
+    ADC_RES_10BIT = (ADC_CFGR_RES_0), /**< ADC resolution: 10 bit */
+    ADC_RES_12BIT = (0x0),            /**< ADC resolution: 12 bit */
+    ADC_RES_14BIT = (0x1),            /**< not applicable */
+    ADC_RES_16BIT = (0x2)             /**< not applicable */
+} adc_res_t;
+/** @} */
+
 /**
  * @name   Constants for internal VBAT ADC line
  * @{

cpu/stm32/periph/Makefile

@@ -17,6 +17,8 @@ ifneq (,$(filter periph_adc,$(USEMODULE)))
     SRC += adc_f4_f7.c
   else ifneq (,$(filter $(CPU_FAM),f0 g0 c0))
     SRC += adc_f0_g0_c0.c
+  else ifneq (,$(filter $(CPU_FAM),l4 wb))
+    SRC += adc_l4_wb.c
   else
     SRC += adc_$(CPU_FAM).c
   endif