Merge pull request #15446 from mak22223/master

0xc0170 · web-flow · commit dba734fb70de · 2023-08-16T15:33:43.000+01:00
Add fix for STM32G4 hardfault in sleep mode
diff --git a/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/STM32G4xx_HAL_Driver/stm32g4xx_hal_pwr.c b/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/STM32G4xx_HAL_Driver/stm32g4xx_hal_pwr.c
@@ -473,6 +473,9 @@ void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)
   {
     /* Request Wait For Interrupt */
     __WFI();
+    __ISB(); // Workaround for STM32G4 errata
+             // see chapter 2.2.8 - Wrong instruction fetches from flash memory upon wakeup from Sleep or Stop mode when debug in low-power mode is enabled
+             // https://www.st.com/resource/en/errata_sheet/es0430-stm32g471xx473xx474xx483xx484xx-device-errata-stmicroelectronics.pdf
   }
   else
   {

Original file line number	Diff line number	Diff line change
`@@ -473,6 +473,9 @@ void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)`
`473`	`473`	`{`
`474`	`474`	`/* Request Wait For Interrupt */`
`475`	`475`	`__WFI();`
	`476`	`+ __ISB(); // Workaround for STM32G4 errata`
	`477`	`+ // see chapter 2.2.8 - Wrong instruction fetches from flash memory upon wakeup from Sleep or Stop mode when debug in low-power mode is enabled`
	`478`	`+ // https://www.st.com/resource/en/errata_sheet/es0430-stm32g471xx473xx474xx483xx484xx-device-errata-stmicroelectronics.pdf`
`476`	`479`	`}`
`477`	`480`	`else`
`478`	`481`	`{`