[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