[CMSIS] Add new atomic register access services
diff --git a/Include/stm32l5xx.h b/Include/stm32l5xx.h
index 62b102c..66cfe20 100644
--- a/Include/stm32l5xx.h
+++ b/Include/stm32l5xx.h
@@ -150,6 +150,61 @@
#define MODIFY_REG(REG, CLEARMASK, SETMASK) WRITE_REG((REG), (((READ_REG(REG)) & (~(CLEARMASK))) | (SETMASK)))
+/* Use of CMSIS compiler intrinsics for register exclusive access */
+/* Atomic 32-bit register access macro to set one or several bits */
+#define ATOMIC_SET_BIT(REG, BIT) \
+ do { \
+ uint32_t val; \
+ do { \
+ val = __LDREXW((__IO uint32_t *)&(REG)) | (BIT); \
+ } while ((__STREXW(val,(__IO uint32_t *)&(REG))) != 0U); \
+ } while(0)
+
+/* Atomic 32-bit register access macro to clear one or several bits */
+#define ATOMIC_CLEAR_BIT(REG, BIT) \
+ do { \
+ uint32_t val; \
+ do { \
+ val = __LDREXW((__IO uint32_t *)&(REG)) & ~(BIT); \
+ } while ((__STREXW(val,(__IO uint32_t *)&(REG))) != 0U); \
+ } while(0)
+
+/* Atomic 32-bit register access macro to clear and set one or several bits */
+#define ATOMIC_MODIFY_REG(REG, CLEARMSK, SETMASK) \
+ do { \
+ uint32_t val; \
+ do { \
+ val = (__LDREXW((__IO uint32_t *)&(REG)) & ~(CLEARMSK)) | (SETMASK); \
+ } while ((__STREXW(val,(__IO uint32_t *)&(REG))) != 0U); \
+ } while(0)
+
+/* Atomic 16-bit register access macro to set one or several bits */
+#define ATOMIC_SETH_BIT(REG, BIT) \
+ do { \
+ uint16_t val; \
+ do { \
+ val = __LDREXH((__IO uint16_t *)&(REG)) | (BIT); \
+ } while ((__STREXH(val,(__IO uint16_t *)&(REG))) != 0U); \
+ } while(0)
+
+/* Atomic 16-bit register access macro to clear one or several bits */
+#define ATOMIC_CLEARH_BIT(REG, BIT) \
+ do { \
+ uint16_t val; \
+ do { \
+ val = __LDREXH((__IO uint16_t *)&(REG)) & ~(BIT); \
+ } while ((__STREXH(val,(__IO uint16_t *)&(REG))) != 0U); \
+ } while(0)
+
+/* Atomic 16-bit register access macro to clear and set one or several bits */
+#define ATOMIC_MODIFYH_REG(REG, CLEARMSK, SETMASK) \
+ do { \
+ uint16_t val; \
+ do { \
+ val = (__LDREXH((__IO uint16_t *)&(REG)) & ~(CLEARMSK)) | (SETMASK); \
+ } while ((__STREXH(val,(__IO uint16_t *)&(REG))) != 0U); \
+ } while(0)
+
#define POSITION_VAL(VAL) (__CLZ(__RBIT(VAL)))
diff --git a/README.md b/README.md
index 6885106..21ba891 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,7 @@
Tag v1.0.2 | Tag v5.4.0_cm33 | Tag v1.2.0 (and following, if any, till next CMSIS tag)
Tag v1.0.3 | Tag v5.6.0_cm33 | Tag v1.3.0 (and following, if any, till next CMSIS tag)
Tag v1.0.4 | Tag v5.6.0_cm33 | Tag v1.4.0 (and following, if any, till next CMSIS tag)
+
The full **STM32CubeL5** MCU package is available [here](https://github.com/STMicroelectronics/STM32CubeL5).
## Troubleshooting
