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Portenta: use LSE as LPTIMER if possible #540
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Memory usage change @ 2a2a278
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pennam
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Memory usage change @ e2c0791
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Tested on a board with LSE.
- LSE detection 👍
- manual LSI / LSE reconfiguration from sketch 👍
dtcm section added too; can be used with int testdtcm __attribute__((section (".dtcm"))) = 42; /* copy *dtcm from flash to DTCM */ extern uintptr_t _dtcm_lma; extern uintptr_t _sdtcm; extern uintptr_t _edtcm; volatile uint8_t *dst = (volatile uint8_t *)&_sdtcm; volatile uint8_t *src = (volatile uint8_t *)&_dtcm_lma; while ((uintptr_t)dst < (uintptr_t)&_edtcm) { *dst++ = *src++; } Serial.println(testdtcm); // will print 42 Serial.println((uintptr_t)&testdtcm, HEX); // will print somethin in rang 0x20000000
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Otherwise, fallback to LSI