Portenta: set r4.3 as the first version with working LSE

facchinm · facchinm · commit 59e1b11b5261 · 2022-09-28T18:02:41.000+02:00
In 4.3, neither LSI nor LSE can keep counting in VBAT mode, so keep LSE to be at least precise
diff --git a/variants/PORTENTA_H7_M7/variant.cpp b/variants/PORTENTA_H7_M7/variant.cpp
@@ -288,7 +288,7 @@ uint32_t lowSpeedClockInUse() {
 #define BOARD_REVISION(x,y)   (x << 8 | y)
 
 extern "C" bool isLSEAvailableAndPrecise() {
-  if (has_otp_info && (boardRevision() >= BOARD_REVISION(4,10))) {
+  if (has_otp_info && (boardRevision() >= BOARD_REVISION(4,3))) {
     return true;
   }
   if (__HAL_RCC_GET_LPTIM4_SOURCE() == RCC_LPTIM4CLKSOURCE_LSI || bootloaderVersion() < 24) {

Original file line number	Diff line number	Diff line change
`@@ -288,7 +288,7 @@ uint32_t lowSpeedClockInUse() {`
`288`	`288`	`#define BOARD_REVISION(x,y) (x << 8 \| y)`
`289`	`289`
`290`	`290`	`extern "C" bool isLSEAvailableAndPrecise() {`
`291`		`- if (has_otp_info && (boardRevision() >= BOARD_REVISION(4,10))) {`
	`291`	`+ if (has_otp_info && (boardRevision() >= BOARD_REVISION(4,3))) {`
`292`	`292`	`return true;`
`293`	`293`	`}`
`294`	`294`	`if (__HAL_RCC_GET_LPTIM4_SOURCE() == RCC_LPTIM4CLKSOURCE_LSI \|\| bootloaderVersion() < 24) {`